Arquivo da tag: Animais

You’re powered by quantum mechanics. No, really… (The Guardian)

For years biologists have been wary of applying the strange world of quantum mechanics, where particles can be in two places at once or connected over huge distances, to their own field. But it can help to explain some amazing natural phenomena we take for granted

and

The Observer, Sunday 26 October 2014

A European robin in flight

According to quantum biology, the European robin has a ‘sixth sense’ in the form of a protein in its eye sensitive to the orientation of the Earth’s magnetic field, allowing it to ‘see’ which way to migrate. Photograph: Helmut Heintges/ Helmut Heintges/Corbis

Every year, around about this time, thousands of European robins escape the oncoming harsh Scandinavian winter and head south to the warmer Mediterranean coasts. How they find their way unerringly on this 2,000-mile journey is one of the true wonders of the natural world. For unlike many other species of migratory birds, marine animals and even insects, they do not rely on landmarks, ocean currents, the position of the sun or a built-in star map. Instead, they are among a select group of animals that use a remarkable navigation sense – remarkable for two reasons. The first is that they are able to detect tiny variations in the direction of the Earth’s magnetic field – astonishing in itself, given that this magnetic field is 100 times weaker than even that of a measly fridge magnet. The second is that robins seem to be able to “see” the Earth’s magnetic field via a process that even Albert Einstein referred to as “spooky”. The birds’ in-built compass appears to make use of one of the strangest features of quantum mechanics.

Over the past few years, the European robin, and its quantum “sixth sense”, has emerged as the pin-up for a new field of research, one that brings together the wonderfully complex and messy living world and the counterintuitive, ethereal but strangely orderly world of atoms and elementary particles in a collision of disciplines that is as astonishing and unexpected as it is exciting. Welcome to the new science of quantum biology.

Most people have probably heard of quantum mechanics, even if they don’t really know what it is about. Certainly, the idea that it is a baffling and difficult scientific theory understood by just a tiny minority of smart physicists and chemists has become part of popular culture. Quantum mechanics describes a reality on the tiniest scales that is, famously, very weird indeed; a world in which particles can exist in two or more places at once, spread themselves out like ghostly waves, tunnel through impenetrable barriers and even possess instantaneous connections that stretch across vast distances.

But despite this bizarre description of the basic building blocks of the universe, quantum mechanics has been part of all our lives for a century. Its mathematical formulation was completed in the mid-1920s and has given us a remarkably complete account of the world of atoms and their even smaller constituents, the fundamental particles that make up our physical reality. For example, the ability of quantum mechanics to describe the way that electrons arrange themselves within atoms underpins the whole of chemistry, material science and electronics; and is at the very heart of most of the technological advances of the past half-century. Without the success of the equations of quantum mechanics in describing how electrons move through materials such as semiconductors we would not have developed the silicon transistor and, later, the microchip and the modern computer.

However, if quantum mechanics can so beautifully and accurately describe the behaviour of atoms with all their accompanying weirdness, then why aren’t all the objects we see around us, including us – which are after all only made up of these atoms – also able to be in two place at once, pass through impenetrable barriers or communicate instantaneously across space? One obvious difference is that the quantum rules apply to single particles or systems consisting of just a handful of atoms, whereas much larger objects consist of trillions of atoms bound together in mindboggling variety and complexity. Somehow, in ways we are only now beginning to understand, most of the quantum weirdness washes away ever more quickly the bigger the system is, until we end up with the everyday objects that obey the familiar rules of what physicists call the “classical world”. In fact, when we want to detect the delicate quantum effects in everyday-size objects we have to go to extraordinary lengths to do so – freezing them to within a whisker of absolute zero and performing experiments in near-perfect vacuums.

Quantum effects were certainly not expected to play any role inside the warm, wet and messy world of living cells, so most biologists have thus far ignored quantum mechanics completely, preferring their traditional ball-and-stick models of the molecular structures of life. Meanwhile, physicists have been reluctant to venture into the messy and complex world of the living cell; why should they when they can test their theories far more cleanly in the controlled environment of the lab where they at least feel they have a chance of understanding what is going on?

Erwin Schrödinger, whose book What is Life? suggested that the macroscopic order of life was based on order at its quantum level.

Erwin Schrödinger, whose book What is Life? suggested that the macroscopic order of life was based on order at its quantum level. Photograph: Bettmann/CORBIS

Yet, 70 years ago, the Austrian Nobel prize-winning physicist and quantum pioneer, Erwin Schrödinger, suggested in his famous book,What is Life?, that, deep down, some aspects of biology must be based on the rules and orderly world of quantum mechanics. His book inspired a generation of scientists, including the discoverers of the double-helix structure of DNA, Francis Crick and James Watson. Schrödinger proposed that there was something unique about life that distinguishes it from the rest of the non-living world. He suggested that, unlike inanimate matter, living organisms can somehow reach down to the quantum domain and utilise its strange properties in order to operate the extraordinary machinery within living cells.

Schrödinger’s argument was based on the paradoxical fact that the laws of classical physics, such as those of Newtonian mechanics and thermodynamics, are ultimately based on disorder. Consider a balloon. It is filled with trillions of molecules of air all moving entirely randomly, bumping into one another and the inside wall of the balloon. Each molecule is governed by orderly quantum laws, but when you add up the random motions of all the molecules and average them out, their individual quantum behaviour washes out and you are left with the gas laws that predict, for example, that the balloon will expand by a precise amount when heated. This is because heat energy makes the air molecules move a little bit faster, so that they bump into the walls of the balloon with a bit more force, pushing the walls outward a little bit further. Schrödinger called this kind of law “order from disorder” to reflect the fact that this apparent macroscopic regularity depends on random motion at the level of individual particles.

But what about life? Schrödinger pointed out that many of life’s properties, such as heredity, depend of molecules made of comparatively few particles – certainly too few to benefit from the order-from-disorder rules of thermodynamics. But life was clearly orderly. Where did this orderliness come from? Schrödinger suggested that life was based on a novel physical principle whereby its macroscopic order is a reflection of quantum-level order, rather than the molecular disorder that characterises the inanimate world. He called this new principle “order from order”. But was he right?

Up until a decade or so ago, most biologists would have said no. But as 21st-century biology probes the dynamics of ever-smaller systems – even individual atoms and molecules inside living cells – the signs of quantum mechanical behaviour in the building blocks of life are becoming increasingly apparent. Recent research indicates that some of life’s most fundamental processes do indeed depend on weirdness welling up from the quantum undercurrent of reality. Here are a few of the most exciting examples.

Enzymes are the workhorses of life. They speed up chemical reactions so that processes that would otherwise take thousands of years proceed in seconds inside living cells. Life would be impossible without them. But how they accelerate chemical reactions by such enormous factors, often more than a trillion-fold, has been an enigma. Experiments over the past few decades, however, have shown that enzymes make use of a remarkable trick called quantum tunnelling to accelerate biochemical reactions. Essentially, the enzyme encourages electrons and protons to vanish from one position in a biomolecule and instantly rematerialise in another, without passing through the gap in between – a kind of quantum teleportation.

And before you throw your hands up in incredulity, it should be stressed that quantum tunnelling is a very familiar process in the subatomic world and is responsible for such processes as radioactive decay of atoms and even the reason the sun shines (by turning hydrogen into helium through the process of nuclear fusion). Enzymes have made every single biomolecule in your cells and every cell of every living creature on the planet, so they are essential ingredients of life. And they dip into the quantum world to help keep us alive.

Another vital process in biology is of course photosynthesis. Indeed, many would argue that it is the most important biochemical reaction on the planet, responsible for turning light, air, water and a few minerals into grass, trees, grain, apples, forests and, ultimately, the rest of us who eat either the plants or the plant-eaters.

The initiating event is the capture of light energy by a chlorophyll molecule and its conversion into chemical energy that is harnessed to fix carbon dioxide and turn it into plant matter. The process whereby this light energy is transported through the cell has long been a puzzle because it can be so efficient – close to 100% and higher than any artificial energy transport process.

Sunlight shines through chestnut tree leaves. Quantum biology can explain why photosynthesis in plants is so efficient.

Sunlight shines through chestnut tree leaves. Quantum biology can explain why photosynthesis in plants is so efficient. Photograph: Getty Images/Visuals Unlimited

The first step in photosynthesis is the capture of a tiny packet of energy from sunlight that then has to hop through a forest of chlorophyll molecules to makes its way to a structure called the reaction centre where its energy is stored. The problem is understanding how the packet of energy appears to so unerringly find the quickest route through the forest. An ingenious experiment, first carried out in 2007 in Berkley, California, probed what was going on by firing short bursts of laser light at photosynthetic complexes. The research revealed that the energy packet was not hopping haphazardly about, but performing a neat quantum trick. Instead of behaving like a localised particle travelling along a single route, it behaves quantum mechanically, like a spread-out wave, and samples all possible routes at once to find the quickest way.

A third example of quantum trickery in biology – the one we introduced in our opening paragraph – is the mechanism by which birds and other animals make use of the Earth’s magnetic field for navigation. Studies of the European robin suggest that it has an internal chemical compass that utilises an astonishing quantum concept called entanglement, which Einstein dismissed as “spooky action at a distance”. This phenomenon describes how two separated particles can remain instantaneously connected via a weird quantum link. The current best guess is that this takes place inside a protein in the bird’s eye, where quantum entanglement makes a pair of electrons highly sensitive to the angle of orientation of the Earth’s magnetic field, allowing the bird to “see” which way it needs to fly.

All these quantum effects have come as a big surprise to most scientists who believed that the quantum laws only applied in the microscopic world. All delicate quantum behaviour was thought to be washed away very quickly in bigger objects, such as living cells, containing the turbulent motion of trillions of randomly moving particles. So how does life manage its quantum trickery? Recent research suggests that rather than avoiding molecular storms, life embraces them, rather like the captain of a ship who harnesses turbulent gusts and squalls to maintain his ship upright and on course.

Just as Schrödinger predicted, life seems to be balanced on the boundary between the sensible everyday world of the large and the weird and wonderful quantum world, a discovery that is opening up an exciting new field of 21st-century science.

Life on the Edge: The Coming of Age of Quantum Biology by Jim Al-Khalili and Johnjoe McFadden will be published by Bantam Press on 6 November.

Chimpanzees in Uganda forced to steal from maize plantations to survive – video (The Guardian)

Source: PLOS One/Wild Chimpanzees on the Edge: Nocturnal Activities in Croplands

Video

The great apes are facing new challenges to coexist with humans. Their home, the Kibale national park, is increasingly being encroached as agricultural fields keep getting closer to the forest. For chimpanzees inhabiting the patch next to the fields, borders are risky areas. But the animals have devised a way to avoid confrontation with humans – they conduct nocturnal raids. This footage shows chimpanzees taking maize from a plantation inside the park

Disponíveis em versão português diretrizes internacionais sobre uso de animais (Jornal da Ciência)

Uma das diretrizes é melhorar o relato da investigação feita com animais

O Conselho Nacional de Controle de Experimentação Animal (CONCEA) divulgou, versão em português, as diretrizes  elaboradas pelo Centro para Substituição, Aperfeiçoamento e Redução de Animais em Pesquisa (NC3Rs, na sigla em inglês) informando como relatar, em artigos científicos, dados relevantes sobre o uso animal para fins científicos, seguindo os parâmetros internacionais.

As diretrizes ARRIVE guidelines (Animal Research: Reporting of In Vivo Experiments) foram desenvolvidas como parte de uma iniciativa do NC3Rs para melhorar o desenho, a análise e o manuscrito de investigação com animais – maximizando a informação publicada e minimizando estudos desnecessários. As diretrizes foram publicadas na revista PLOS Biology em Junho 2010 e são atualmente endossadas por revistas científicas, agências de financiamento e sociedades científicas.

Uma das diretrizes é melhorar o relato da investigação feita com animais. Outra é melhorar a comunicação das observações científicas para toda comunidade científica.

Acesse as diretrizes ARRIVE em português.

(Jornal da Ciência)

Chimpanzees have favorite ‘tool set’ for hunting staple food of army ants (University of Cambridge)

15-Oct-2014

Fred Lewsey

This video shows a chimpanzee who has constructed a tool with which to investigate a camera (Nimba mountains, Guinea). 

West African chimpanzees will search far and wide to find Alchornea hirtella, a spindly shrub whose straight shoots provide the ideal tools to hunt aggressive army ants in an ingenious fashion, new research shows.

The plant provides the animals with two different types of tool, a thicker shoot for ‘digging’ and a more slender tool for ‘dipping’.

On locating an army ant colony, chimpanzees will dig into the nest with the first tool – aggravating the insects. They then dip the second tool into the nest, causing the angry ants to swarm up it. Once the slender shoot is covered in ants, the chimpanzees pull it out and wipe their fingers along it: scooping up the ants until they have a substantial handful that goes straight into the mouth in one deft motion.

This technique – ‘ant dipping’ – was previously believed to be a last resort for the hungry apes, only exploited when the animal’s preferred food of fruit couldn’t be found. But the latest study, based on over ten years of data, shows that, in fact, army ants are a staple in the chimpanzee diet – eaten all year round regardless of available sources of fruit. Ants may be an important source of essential nutrients not available in the typical diet, say researchers, as well as a potential source of protein and fats.

The new research, published today in the American Journal of Primatology, was led by Dr Kathelijne Koops from the University of Cambridge’s Division of Biological Anthropology and Junior Research Fellow of Homerton College.

This video shows a male chimpanzee looking on at a female who is using an ant-dipping tool (Kalinzu Forest, Uganda).

“Ant dipping is a remarkable feat of problem-solving on the part of chimpanzees,” said Koops. “If they tried to gather ants from the ground with their hands, they would end up horribly bitten with very little to show for it. But by using a tool set, preying on these social insects may prove as nutritionally lucrative as hunting a small mammal – a solid chunk of protein.”

Koops points out that if Alchornea hirtella is nowhere to be found, chimps will fashion tools from other plants – but seemingly only after an exhaustive search for their preferred tool provider.

Previous research has shown that chimpanzees will actually select longer tools for faster, more aggressive types of army ants. The average ‘dipping’ tool length across the study was 64 centimetres, but dipping tools got up to 76 cm.

The question for Koops is one of animal culture: how do chimpanzees acquire knowledge of such sophisticated techniques?

“Scientists have been working on ruling out simple environmental and genetic explanations for group differences in behaviours, such as tool use, and the evidence is pointing strongly towards it being cultural,” said Koops. “They probably learn tool use behaviours from their mother and others in the group when they are young.”

The research for the ant-dipping study – which took place in Guinea’s Nimba mountains – proved challenging, as the chimpanzees were not habituated to people – so the team acted almost as archaeologists, studying ‘exploited’ ants nests to measure abandoned tool sets and “sifting through faeces for ants heads”.

IMAGE: This image shows a chimpanzee using an ant-dipping tool.

To further study these illusive creatures, Koops set up cameras to take extensive video footage of the chimpanzees and their tool use. In doing so, she managed to capture a chimpanzee who has constructed a tool with which to investigate the camera itself – prodding it curiously and then sniffing the end of the tool (VIDEO 1).

“This study is part of a big ongoing research project. The next stages will involve looking at social opportunities to learn: how much time do youngsters spend within arm’s length of other individuals; how much time do they spend close to their mother; as well as innate predispositions to explore and engage with objects,” said Koops.

A video clip from the Kalinzu Forest in Uganda, where Koops is currently conducting comparative studies on East African chimpanzees, captures a male chimpanzee seemingly looking on enviously at a female who has managed to construct a much better dipping tool than his own and is feasting heartily as a consequence (VIDEO 2). Koops suggests this kind of observing of other individuals may lead to learning within a chimpanzee community.

“By studying our closest living relatives we gain a window into the evolutionary past which allows us to shed light on the origins of human technology and material culture,” added Koops.

A link to the paper can be found here: http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1098-2345/earlyview

Crocodiles are sophisticated hunters: Work as a team to hunt their prey (Science Daily)

Date: October 13, 2014

Source: University of Tennessee

Summary: Recent studies have found that crocodiles and their relatives are highly intelligent animals capable of sophisticated behavior such as advanced parental care, complex communication and use of tools for hunting. New research shows just how sophisticated their hunting techniques can be.

Crocodiles (stock image). Credit: © aarstudio / Fotolia

Recent studies have found that crocodiles and their relatives are highly intelligent animals capable of sophisticated behavior such as advanced parental care, complex communication and use of tools for hunting.

New University of Tennessee, Knoxville, research published in the journal Ethology Ecology and Evolution shows just how sophisticated their hunting techniques can be.

Vladimir Dinets, a research assistant professor in UT’s Department of Psychology, has found that crocodiles work as a team to hunt their prey. His research tapped into the power of social media to document such behavior.

Studying predatory behavior by crocodiles and their relatives such as alligators and caimans in the wild is notoriously difficult because they are ambush hunters, have slow metabolisms and eat much less frequently than warm-blooded animals. In addition, they are mostly nocturnal and often hunt in murky, overgrown waters of remote tropical rivers and swamps. Accidental observations of their hunting behavior are often made by non-specialists and remain unpublished or appear in obscure journals.

To overcome these difficulties, Dinets used Facebook and other social media sites to solicit eyewitness accounts from amateur naturalists, crocodile researchers and nonscientists working with crocodiles. He also looked through diaries of scientists and conducted more than 3,000 hours of observations himself.

All that work produced just a handful of observations, some dating back to the 19th century. Still, the observations had something in common — coordination and collaboration among the crocodiles in hunting their prey.

“Despite having been made independently by different people on different continents, these records showed striking similarities. This suggests that the observed phenomena are real, rather than just tall tales or misinterpretation,” said Dinets.

Crocodiles and alligators were observed conducting highly organized game drives. For example, crocodiles would swim in a circle around a shoal of fish, gradually making the circle tighter until the fish were forced into a tight “bait ball.” Then the crocodiles would take turns cutting across the center of the circle, snatching the fish.

Sometimes animals of different size would take up different roles. Larger alligators would drive a fish from the deeper part of a lake into the shallows, where smaller, more agile alligators would block its escape. In one case, a huge saltwater crocodile scared a pig into running off a trail and into a lagoon where two smaller crocodiles were waiting in ambush — the circumstances suggested that the three crocodiles had anticipated each other’s positions and actions without being able to see each other.

“All these observations indicate that crocodilians might belong to a very select club of hunters — just 20 or so species of animals, including humans — capable of coordinating their actions in sophisticated ways and assuming different roles according to each individual’s abilities. In fact, they might be second only to humans in their hunting prowess,” said Dinets.

Dinets said more observations are needed to better understand what exactly the animals are capable of. “And these observations don’t come easily,” he said.

Previous research by Dinets discovered that crocodiles are able to climb trees and use lures such as sticks to hunt prey. More of his crocodile research can be found in his book “Dragon Songs.”


Journal Reference:

  1. Vladimir Dinets. Apparent coordination and collaboration in cooperatively hunting crocodilians. Ethology Ecology & Evolution, 2014; 1 DOI:10.1080/03949370.2014.915432

In India, The World’s First Vegetarian City (World Crunch)

After monks went on a hunger strike to push for a citywide ban on animal slaughter, the local government declared Palitana a meat-free zone. But the city’s Muslims are not happy.

Article illustrative imageA cityscape of Palitana

PALITANA — Jainism is one of the oldest religions in the world and preaches a path of non-violence towards all living beings. In India, about 5 million people practice it.

“Everyone in this world — whether animal or human being or a very small creature — has all been given the right to live by God,” says Virat Sagar Maharaj, a Jain monk. “So who are we to take away that right from them? This has been written in the holy books of every religion, particularly in Jainism.”

The mountainous town of Palitana in the state of Gujarat is home to one of Jain’s holiest sites, and many residents don’t want any kind of killing happening here. Recently, 200 Jain monks began a hunger strike, threatening to fast until death until the town was declared an entirely vegetarian zone.

The Jain monks on hunger strike — Photo: Shuriah Niazi

“Meat has always been easily available in this city, but it’s against the teaching of our religion,” says Sadhar Sagar, a Jain believer. “We always wanted a complete ban on non-vegetarian food in this holy site.”

They have gotten their wish. On Aug. 14, the Gujarat government declared Palitana a “meat-free zone.” They instituted a complete ban on the sale of meat and eggs and have also outlawed the slaughter of animals within the town’s limits.

It’s a victory for vegetarians, but bad for business for others. Fishermen such as Nishit Mehru have had to stop working entirely. “We have been stopped from selling anything in Palitana,” he says. “They shouldn’t have taken this one-sided decision. How will we survive if we are not allowed to sell fish? The government should not make decisions under pressure.”

On behalf of other fishermen, Valjibhai Mithapura took the issue to the state’s high court, which has called on the state government to explain the ban put in place locally. It will then make a decision about whether this regulation is legal. Gujarat is ruled by the Hindu nationalist BJP party, whose leader is Prime Minister Narendra Modi.

The population of Palitana is 65,000 and about 25% of them are Muslim. Local Muslim religious scholar Syed Jehangir Miyan disagrees with the ban. “There are so many people living in this city, and the majority of them are non-vegetarian,” he says. “Stopping them from eating a non-vegetarian diet is a violation of their rights. We have been living in this city for decades. It is wrong to suddenly put a ban on the whole city now.”

Read the full article: In India, The World’s First Vegetarian City
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Killer whales learn to communicate like dolphins (Science Daily)

Date: October 7, 2014

Source: Acoustical Society of America (ASA)

Summary: The sounds that most animals use to communicate are innate, not learned. However, a few species, including humans, can imitate new sounds and use them in appropriate social contexts. This ability, known as vocal learning, is one of the underpinnings of language. Now, researchers have found that killer whales can engage in cross-species vocal learning: when socialized with bottlenose dolphins, they shifted the sounds they made to more closely match their social partners.

Killer whales (Orcinus orca) can engage in cross-species vocal learning: when socialized with bottlenose dolphins, they shifted the types of sounds they made to more closely match their social partners. Credit: © RKP / Fotolia

From barks to gobbles, the sounds that most animals use to communicate are innate, not learned. However, a few species, including humans, can imitate new sounds and use them in appropriate social contexts. This ability, known as vocal learning, is one of the underpinnings of language.

Vocal learning has also been observed in bats, some birds, and cetaceans, a group that includes whales and dolphins. But while avian researchers have characterized vocal learning in songbirds down to specific neural pathways, studying the trait in large marine animals has presented more of a challenge.

Now, University of San Diego graduate student Whitney Musser and Hubbs-SeaWorld Research Institute senior research scientist Dr. Ann Bowles have found that killer whales (Orcinus orca) can engage in cross-species vocal learning: when socialized with bottlenose dolphins, they shifted the types of sounds they made to more closely match their social partners. The results, published in The Journal of the Acoustical Society of America, suggest that vocal imitation may facilitate social interactions in cetaceans.

Killer whales have complex vocal repertoires made up of clicks, whistles and pulsed calls — repeated brief bursts of sound punctuated with silence. The acoustic features of these vocalizations, such as their duration, pitch and pulse pattern, vary across social groups. Whales that are closely related or live together produce similar pulsed calls that carry vocal characteristics distinct to the group, known as a dialect.

“There’s been an idea for a long time that killer whales learn their dialect, but it isn’t enough to say they all have different dialects so therefore they learn. There needs to be some experimental proof so you can say how well they learn and what context promotes learning,” said Bowles.

Testing vocal learning ability in social mammals usually requires observing the animal in a novel social situation, one that might stimulate them to communicate in new ways. Bottlenose dolphins provide a useful comparison species in this respect: they make generally similar sounds but produce them in different proportions, relying more on clicks and whistles than the pulsed calls that dominate killer whale communication.

“We had a perfect opportunity because historically, some killer whales have been held with bottlenose dolphins,” said Bowles. By comparing old recordings of vocalization patterns from the cross-socialized subjects with recordings of killer whales and bottlenose dolphins housed in same-species groups, Bowles and her team were able to evaluate the degree to which killer whales learned vocalization patterns from their cross-species social partners.

All three killer whales that had been housed with dolphins for several years shifted the proportions of different call types in their repertoire to more closely match the distribution found in dolphins — they produced more clicks and whistles and fewer pulsed calls. The researchers also found evidence that killer whales can learn completely new sounds: one killer whale that was living with dolphins at the time of the experiment learned to produce a chirp sequence that human caretakers had taught to her dolphin pool-mates before she was introduced to them.

Vocal learning skills alone don’t necessarily mean that killer whales have language in the same way that humans do. However, they do indicate a high level of neural plasticity, the ability to change circuits in the brain to incorporate new information. “Killer whales seem to be really motivated to match the features of their social partners,” said Bowles, though the adaptive significance of the behavior is not yet known.

There are immediate reasons to study the vocal patterns of cetaceans: these marine mammals are threatened by human activities through competition for fishery resources, entanglement in fishing gear, collisions with vessels, exposure to pollutants and oil spills and, ultimately, shrinking habitats due to anthropogenic climate change. If their social bonds are closely linked to their vocalizations, killer whales’ ability to survive amidst shifting territories and social groups may be tied to their ability to adapt their communication strategies.

“It’s important to understand how they acquire [their vocalization patterns], and lifelong, to what degree they can change it, because there are a number of different [cetacean] populations on the decline right now,” said Bowles. “And where killer whales go, we can expect other small whale species to go — it’s a broader question.”


Journal Reference:

  1. Whitney B. Musser, Ann E. Bowles, Dawn M. Grebner, and Jessica L. Crance.Differences in acoustic features of vocalizations produced by killer whales cross-socialized with bottlenose dolphins. The Journal of the Acoustical Society of America, 2014 DOI: 10.1121/1.4893906

Chimp social network shows how new ideas catch on (New Scientist)

19:00 30 September 2014 by Catherine Brahic

Three years ago, an adult chimpanzee called Nick dipped a piece of moss into a watering hole in Uganda’s Budongo Forest. Watched by a female, Nambi, he lifted the moss to his mouth and squeezed the water out. Nambi copied him and, over the next six days, moss sponging began to spread through the community. A chimp trend was born.

Until that day in November 2011, chimps had only been seen to copy actions in controlled experimentsMovie Camera, and social learning had never been directly observed in the wild.

To prove that Nambi and the seven other chimps who started using moss sponges didn’t just come up with the idea independently, Catherine Hobaiter of the University of St Andrews, UK, and her colleagues used their own innovation: a statistical analysis of the community’s social network. They were able to track how moss-sponging spread and calculated that once a chimp had seen another use a moss sponge, it was 15 times more likely to do so itself.

A decade ago it was believed that only humans have the capacity to imitate, says Frans de Waal of Emory University in Atlanta, Georgia. “The present study is the first on apes to show by means of networking analysis that habits travel along paths of close relationships,” he says, adding that a similar idea was shown not long ago for humpback whale hunting techniques.

Caught in the act

Copying may seem like the easiest thing to us, but not all animals are able. Chimps at the Gombe Stream reserve in Tanzania can copy each other using twigs to fish out termites, but the baboons that watch them haven’t picked up the trick. “They don’t get it,” says Andrew Whiten of the University of St Andrews.

Whiten previously listed 39 behaviours that were found only in some communities of chimps, suggesting these were picked up from other group members rather than being innate behaviours. Since then, more have been added, but they still number in the dozens, not the thousands.

Given how rarely chimps pick up trends, it’s exciting that someone was on hand to watch it happen in this latest study, says Whiten.

Ultimately, he says, our ability to both invent and copy meant our ancestors could exploit a cognitive niche. “They began hunting large game by doing it the brainy way.” Imitation, it turns out, is not just the sincerest form of flattery, it’s also a smart thing to do.

Journal reference: PLoS Biology, DOI: 10.1371/journal.pbio.1001960

Concea abre consulta pública para guia de uso de animais (MCTI)

Sociedade pode sugerir mudanças em propostas de manuais para pesquisa e ensino com primatas e estudos clínicos fora das instalações convencionais.

O Conselho Nacional de Controle de Experimentação Animal (Concea) abriu nesta quinta-feira (25), ao publicar  no Diário Oficial da União (DOU), uma consulta pública de 21 dias para dois capítulos do Guia Brasileiro de Produção e Utilização de Animais para Atividades de Ensino ou Pesquisa Científica.

Aprovado por etapas, o guia em elaboração contempla tópicos destinados a aves, cães, gatos, lagomorfos (como coelhos e lebres) e roedores, entre outros grupos taxonômicos.

Os capítulos sob consulta tratam de “primatas não humanos” e “estudos clínicos conduzidos a campo”. Sugestões de mudanças nos textos devem ser detalhadas e justificadas por meio do preenchimento de formulários disponíveis na página do conselho e, então, encaminhadas ao endereço eletrônico consultapubl.concea@mcti.gov.br.

“Essa participação da sociedade é importante porque o guia será a base para a definição dos requisitos necessários para a solicitação do licenciamento de atividades de pesquisa e ensino com animais, sem o qual o uso de determinada espécie não será permitido, conforme estabelecido na Lei Arouca”, destaca o coordenador do Concea, José Mauro Granjeiro.

Os dois capítulos devem incorporar considerações da sociedade antes da 26ª Reunião Ordinária do Concea, em 26 e 27 de novembro, quando a instância colegiada planeja apreciar o conteúdo e aprovar os documentos finais, a serem publicados no DOU. Nos meses seguintes, outros trechos do guia têm previsão de passar por consulta pública, abrangendo outros grupos taxonômicos como peixes, ruminantes, equinos, suínos, répteis e anfíbios.

Também nesta quinta, foi publicada uma lista com 17 métodos para substituir ou reduzir o uso de animais em testes toxicológicos. Divididos em sete grupos, as técnicas servem para medir o potencial de irritação e corrosão da pele e dos olhos, fototoxicidade, absorção e sensibilização cutânea, toxicidade aguda e genotoxicidade.

Primatas – Com 73 páginas, o capítulo acerca de primatas não humanos aborda a relevância desse conjunto de animais em análises sobre doenças virais e pesquisas biomédicas. O texto associa a “estreita relação filogenética com o homem” à utilização para estudos comparativos em enfermidades humanas.

O guia detalha requisitos mínimos para as instalações, da estrutura física dos alojamentos às áreas de criação e experimentação, passando por condições ambientais, além de procedimentos de manejo, como alimentação adequada, higienização de gaiolas e objetos, formas de contenção física, enriquecimento ambiental e medicina preventiva. Métodos experimentais, cuidados veterinários e princípios de bem-estar animal também compõem o capítulo sobre primatas.

“De uma forma geral, independentemente da finalidade da criação de primatas, o alojamento deve ser composto por um recinto complexo e estimulante, que promova a boa saúde e o bem-estar psicológico e que forneça plena oportunidade de interação social, exercício e manifestação a uma variedade de comportamentos e habilidades inerentes à espécie”, indica o texto. “O recinto satisfatório deve fornecer aos animais um espaço suficiente para que eles mantenham seus hábitos normais de locomoção e de comportamento”.

Estudos a campo – A intenção do outro documento sob consulta pública é orientar pesquisadores e definir requisitos mínimos necessários para a condução de “estudos clínicos conduzidos a campo” – aqueles realizados fora das instalações de uso animal –, quanto a aspectos éticos ligados ao manejo e ao bem-estar das espécies.

“Considerando que uma das missões do Concea é garantir que os animais utilizados em qualquer tipo de pesquisa científica tenham sua integridade e bem-estar preservados, a condução dos estudos fora dos ambientes controlados das instalações para utilização de animais em atividades de ensino ou pesquisa devem se adequar às regras aplicáveis”, afirma o guia.

Criado em 2008, o Concea é uma instância colegiada multidisciplinar de caráter normativo, consultivo, deliberativo e recursal. Dentre as suas competências destacam-se, além do credenciamento das instituições que desenvolvam atividades no setor, a formulação de normas relativas à utilização humanitária de animais com finalidade de ensino e pesquisa científica, bem como o estabelecimento de procedimentos para instalação e funcionamento de centros de criação, de biotérios e de laboratórios de experimentação animal.

(MCTI)

Dolphins are attracted to magnets: Add dolphins to the list of magnetosensitive animals, French researchers say (Science Daily)

Date: September 29, 2014

Source: Springer Science+Business Media

Summary: Add dolphins to the list of magnetosensitive animals, French researchers say. Dolphins are indeed sensitive to magnetic stimuli, as they behave differently when swimming near magnetized objects.

Bottlenose dolphins (stock image). Credit: © sanilda / Fotolia

Add dolphins to the list of magnetosensitive animals, French researchers say. Dolphins are indeed sensitive to magnetic stimuli, as they behave differently when swimming near magnetized objects. So says Dorothee Kremers and her colleagues at Ethos unit of the Université de Rennes in France, in a study in Springer’s journalNaturwissenschaften — The Science of Nature. Their research, conducted in the delphinarium of Planète Sauvage in France, provides experimental behavioral proof that these marine animals are magnetoreceptive.

Magnetoreception implies the ability to perceive a magnetic field. It is supposed to play an important role in how some land and aquatic species orientate and navigate themselves. Some observations of the migration routes of free-ranging cetaceans, such as whales, dolphins and porpoises, and their stranding sites suggested that they may also be sensitive to geomagnetic fields.

Because experimental evidence in this regard has been lacking, Kremers and her colleagues set out to study the behavior of six bottlenose dolphins in the delphinarium of Planète Sauvage in Port-Saint-Père. This outdoor facility consists of four pools, covering 2,000 m² of water surface. They watched the animals’ spontaneous reaction to a barrel containing a strongly magnetized block or a demagnetized one. Except from this characteristic, the blocks were identical in form and density. The barrels were therefore indistinguishable as far as echolocation was concerned, the method by which dolphins locate objects by bouncing sound waves off them.

During the experimental sessions, the animals were free to swim in and out of the pool where the barrel was installed. All six dolphins were studied simultaneously, while all group members were free to interact at any time with the barrel during a given session. The person who was assigned the job to place the barrels in the pools did not know whether it was magnetized or not. This was also true for the person who analyzed the videos showing how the various dolphins reacted to the barrels.

The analyses of Ethos team revealed that the dolphins approached the barrel much faster when it contained a strongly magnetized block than when it contained a similar not magnetized one. However, the dolphins did not interact with both types of barrels differently. They may therefore have been more intrigued than physically drawn to the barrel with the magnetized block.

“Dolphins are able to discriminate between objects based on their magnetic properties, which is a prerequisite for magnetoreception-based navigation,” says Kremers. “Our results provide new, experimentally obtained evidence that cetaceans have a magenetic sense, and should therefore be added to the list of magnetosensitive species.”

Journal Reference:

  1. Dorothee Kremers, Juliana López Marulanda, Martine Hausberger, Alban Lemasson. Behavioural evidence of magnetoreception in dolphins: detection of experimental magnetic fields. Naturwissenschaften, 2014 DOI:10.1007/s00114-014-1231-x

On the Cusp of Climate Change (New York Times)

U.S. Fish and Wildlife Service, via Associated Press

Walruses

Sea ice is critical for all parts of the walrus’s life cycle. Adults dive and eat on these frigid platforms, and females give birth and raise their pups there. But as sea ice retreats during Arctic summers, walruses are being driven ashore.

“In the summer we’ve seen the sea ice recede far to the north,” said Chadwick V. Jay, a research ecologist for the United States Geological Survey. That change is “making it very difficult for walruses to make a living.”

In five of the last seven summers, tens of thousands of female Pacific walruses and their pups have come ashore in Alaska, farther from their preferred prey: the clam, worm and snail beds in the deep waters of the Bering and Chukchi Seas.

An Animal Gamble in the Arctic (8:59) – The Arctic is changing — fast. Two experts who have spent decades working there believe that the marine mammals who call the high latitudes home are now locked into a human-forced ecological game of chance.

Sheng Li/Reuters

Tea

In China, the tea harvest depends on the monsoons: The best tea is harvested in springtime, when the weather is still dry. But climate change threatens to extend the monsoon season.

“Post monsoon season, farmers get much less from their harvest, and a lot of the chemicals that give tea its flavor drop,” said Colin M. Orians, a chemical ecologist at Tufts University. “If climate changes the onset of the monsoon season, farmers will have a shorter window in which to harvest their tea.”

Over the next four years, Dr. Orians and his team will investigate the effects of changing temperatures and rainfall on tea quality and on the livelihoods of farmers who depend on the harvest.

Todd W. Pierson/University of Georgia

Salamanders

Salamanders in the Appalachian Mountains are getting smaller, and species at lower altitudes, where the greatest drying and warming has occurred, are the most affected. One species became 18 percent smaller over 55 years.

“It could be that a change in body size is the first response to climate change,” said Karen Lips, an ecologist at the University of Maryland. “Their food may be affected, and they may be producing smaller babies.”

Dr. Lips partially relied on the data of Richard Highton, a retired ecologist from the University of Maryland who spent 50 years studying and collecting salamanders that are now preserved at the Smithsonian Institution. At the time of his retirement, he noted that salamanders were mysteriously disappearing.

“If they are not nearly as big, they may not be producing as many offspring,” Dr. Lips said.

To test the theory, Dr. Lips and her team plan to raise salamanders in incubators that mimic different climates.

Nikola Solic/Reuters

Bumblebees

Bumblebees and other pollinators are critical to global agriculture, but recent studies suggest that up to one-quarter of Europe’s bumblebee population may die out.

Researchers say that climate change is at least partly to blame, along with disease and loss of habitat.

Scientists estimate that pollinators indirectly contribute about $30 billion a year to the European economy.  “Pollinators are essential to our population,” said Jean-Christophe Vié, deputy director of the species program at the International Union for Conservation of Nature in Switzerland.

Felix Kaestle/European Pressphoto Agency

Roe Deer

Roe deer, a small, reddish-brown species that flourishes all over Europe, give birth when new plant growth provides ample nutritious food for the mother. But flowers are blooming earlier than they used to, and the deer are missing their meals.

Researchers tracked deer births from 1985 to 2011 in the Champagne region of northeastern France, where average spring temperatures have steadily increased and flowering time is coming gradually earlier. The study is online in PLOS Biology.

The deer time their fertility by light availability, not temperature. With earlier springs, they are now giving birth too late to take advantage of the best food.

Using data on 1,095 births, the scientists calculated that the mismatch between flowering time and birth over the period had grown by 36 days.

The researchers estimate that deer fitness declined by 6 percent over the period, and by 14 percent in 2007 and 2011, when flowering was particularly early.

“Roe deer are very dependent on large quantities of high quality food, and the critical stage is the first week’s supply,” said the lead author, Jean-Michel Gaillard, a director of research at the National Center for Scientific Research at the University of Lyon. “Unlike birds, for example, that can migrate and breed earlier, roe deer cannot.”

Marcelo Del Pozo/Reuters

Olives

In the Mediterranean Basin, small olive farms can support entire families. Olive trees are notoriously drought-resistant, and even in arid ecosystems they attract migratory birds and a host of insect species.

But as the region warms, some olive trees will not be as productive.

“In the south, you’re going to see a lower crop yield,” said Andrew Paul Gutierrez, an ecologist at the University of California, Berkeley. “In marginal areas, the farmers will just go out of business.”

Dr. Gutierrez and his colleagues predict that some local farmers ultimately will have to abandon their orchards, leaving barren swaths of desert where biodiversity once flourished.

Tom McHugh/Science Source

Lemmings

Contrary to myth, lemmings do not commit mass suicide. But populations do rise and fall in predictable cycles, to the benefit and detriment of predators like arctic foxes and migratory birds.

Recently, scientists noticed that some groups of lemmings have died off.

“The lemming cycle is the heartbeat of the terrestrial Arctic,” said Nicolas Lecomte, a biologist at the University of Moncton in Canada. “Now we’re seeing the collapse of the main prey of many terrestrial predators.”

Lemmings survive harsh winters by hiding in the snow. When warmer temperatures bring off-season rain, that snow turns to ice, and the lemmings cannot burrow.

Dr. Lecomte has found that as lemmings die off en masse, the fragile Arctic ecosystem is growing weaker.

Asit Kumar/Agence France-Presse – Getty Images

Wheat, Rice and Corn

If wheat, rice and corn are going to continue to feed the world, the crops will have to adapt to warmer temperatures. The latest report from the Intergovernmental Panel on Climate Change offers some predictions.

The analysis, published last spring in Nature Climate Change, concluded that a 3.6 degree Fahrenheit increase in temperature will bring a significant decline in crop yields.

Most projections see a decrease from 2030 onward, with greater decreases in the 2040s and 2050s.

Selective breeding and changes in irrigation methods, pest control, fertilization and planting dates may compensate, partially, for the temperature change. But most of these adaptations will work better in temperate regions, while tropical crop yields will continue to decline.

Extreme weather events — another consequence of climate change — will affect yields year-to-year in ways that are difficult to forecast.

“There are two pieces of bad news here,” said the lead author of the I.P.C.C report, Andy J. Challinor, a professor of climate impact at the University of Leeds in England. “One is that average yields are going down. The other is that yields in any given year will be less reliable.”

Patrick Kerwin

Sharks

Sharks pursue their prey partly by odor, but rising carbon dioxide levels may severely impair their sense of smell.

Scientists used the smooth dogfish, a small shark, as an experimental animal. They created tanks in which some jets of water held the odor of squid, a favorite food, or no odor at all. The water in the tanks also contained varying levels of carbon dioxide.

With carbon dioxide levels resembling today’s, the sharks spent 60 percent of their time nosing about the plume with the squid odor. But in water with carbon dioxide concentrations predicted for the year 2100, the animals actively avoided the jet with the food odor, spending only 15 percent of their time there.

Any change in shark feeding habits might affect other species as well.

“There might be a decrease in hunting behavior among sharks, and an increase in prey animals as a result,” said a co-author, Ashley R. Jennings, a researcher at Boston University. “That’s assuming the prey animals aren’t being affected by CO₂ as well.”

Sue-Ann Watson

Conch Snails

As the oceans gather carbon, a small sea snail that lives in the Great Barrier Reef risks losing its famous ability to leap.

The conch snail jumps to escape from a predator, also a sea snail, that tries to inject it with a poisonous dart.

In laboratory experiments in water with increased carbon dioxide levels, the snails were 50 percent less likely to jump. And snails that did jump took nearly twice as long to do so.

The carbon dioxide and acidity disrupt a neurotransmitter receptor in the snail’s nervous system, one that other marine animals also rely on.

“They are very widespread,” said Sue-Ann Watson, a biologist at James Cook University in Australia. “It could affect many marine animals and their behaviors.”

Oceans today are 30 percent more acidic than they were 250 years ago, when the Industrial Revolution started. And it is getting worse.

“By the end of the century, if we carry on with business as usual, they will be 150 percent more acidic than they were 250 years ago,” Dr. Watson said.

Gifford Miller

Moss

As Arctic temperatures rise every summer, some of the ice on Canada’s Baffin Island melts, revealing the moss trapped underneath. Now, using radiocarbon dating, researchers have determined that until recently some of that moss hadn’t seen daylight in 44,000 years.

The melting ice not only gives scientists the chance to study ancient moss, but adds to evidence that climate change is caused by human activities, not Earth’s natural warming and cooling cycle, said Gifford H. Miller, a geologist at the University of Colorado.

“Cyclical warming is mostly related to the Earth’s irregular orbit around the sun,” he said. The Earth warms when it’s nearer the sun and cools when it’s farther away.

“For the past 10,000 years, we’ve been getting farther away,” he said. The exposure of such ancient moss suggests “the Arctic is now experiencing warmer summers than at any time since the end of the Ice Age.”

Science/Associated Press

Chickadees

Black-capped chickadees are commonly found in the Northeastern United States. Carolina chickadees make their home in the Southeast. Between them is a narrow zone in which both breeds reproduce in the spring.

As winter temperatures have risen over the past decade, the birds’ social scene has moved steadily northward. Today, it is about seven miles farther north than it was in 2004.

The reason? Carolina chickadees are trying to move north — like many other species dealing with climate change — and are running into the black-caps.

“As they start interacting with the black-caps, they try to hybridize,” said Robert L. Curry, a biologist at Villanova University who has studied the birds. But a high percentage of the hybrid eggs don’t hatch, he has found, and hybrid chickadees are probably less fertile.

This is unfortunate for both species in the short term, but it would be even worse for two species not accustomed to mixing.

“This is a model for what could happen if you had an introduced species moving into a new area because of climate change, then come in contact with a species it’s never met before,” Dr. Curry said.

David Inouye

Wildflowers

To everything there is a season — including, of course, the flowering of plants. But a warming climate is changing the timing in complicated ways.

Scientists reviewed 39 years of records of flowering plants in the Rocky Mountains in Colorado, a period in which each decade saw a 0.72 degree Fahrenheit increase in average summer temperatures and a 3.5-day earlier spring snow melt.

The resulting study, published in Proceedings of the National Academy of Sciences last spring, found considerable variation in the changes in flowering, and a much larger number of species affected than previously believed.

Some form of flowering change occurred in 41 of 60 species examined. On average, first flowering advanced by 3.3 days per decade, peak flowering by 2.5 days, and final flowering by 1.5 days.

“The changes in the flower community are potentially reshuffling what’s available for the pollinators,” said a co-author, Amy M. Iler, a postdoctoral researcher at the Rocky Mountain Biological Laboratory. “We don’t know what all the consequences will be. It’s likely it will be good for some and bad for others.”

Dr. Andrew Weeks

Fruit Flies

As temperatures rise, insect populations may relocate around the globe in search of more hospitable environments. But it is the extreme highs, not just the average rise in temperatures, that may determine where they end up.

Scientists studied 10 different fruit fly species in Australia (both temperate and tropical), noting the temperature ranges each preferred for mating and everyday life, and their thresholds for extreme hot and cold.

All the species lived in environments where temperatures were sometimes less than optimal, the researchers found, but none chose places that forced them to endure extreme heat.

“Many species might undergo seasons where conditions are not optimal for growth and reproduction,” said Johannes Overgaard, a biologist at Aarhus University in Denmark and an author of the study. “They just survive the season. But what they can’t survive is temperatures beyond their threshold.”

This is bad news for the insects in Australia, who might find themselves with fewer habitable lands as extreme conditions dominate the continent. Whether this will also hold true for other continents is not yet known, Dr. Overgaard said.

Kelly Shimoda for The New York Times

Rock Snot

An unsightly algae known as “rock snot” has been surfacing in lake waters in Eastern Canada.

“It looks like torn-up toilet paper that is attached to rocks,” said John Smol, a biologist at Queen’s University in Ontario who is studying the algae’s growth. “It’s an aesthetic issue, and as it decomposes it becomes a smell issue.”

Rock snot, or didymo, was thought of as an invasive species introduced by humans. But an analysis of fossilized algae in the lakes indicates that it is native.

The algae was present in one lake in Quebec since at least 1970, 36 years before it was first noticed, Dr. Smol’s team found.

Didymo tends to grow in flowing waters. Warmer winters may be producing less ice and snow that disrupt the flow.

Over time, the rock snot will become much more than an eyesore, Dr. Smol said. It will displace other organisms and destroy fish habitats.

F. Stuart Westmorland/Science Source

Coral Reefs

Ocean acidification endangers coral in every ocean. But researchers haverecently discovered unusual reefs in Palau that are thriving in increasingly acidicified waters.

Ocean acidification occurs when carbon emitted by human activities mixeswith ocean waters. This decreases carbonate ions in the water, which coral andother organisms need to form their protective shells.

Yet in 2012, researchers working in the waters off Palau identified coralreefs that were both extremely acidified and very healthy. What’s differentabout these reefs, said Kathryn Shamberger, anoceanographer at Texas A&M University, is that the waters became acidifiedthrough natural means.

“The growth of the reef itself and the breathing of the organisms onthe reef,” not man-made emissions, added carbon to the water, she said.

In a typical reef these products would be flushed out before they could havemuch effect. But the waters in Palau pool around its many small islands.

Might reefs suffering from man-made acidification survive as well as these?Dr. Shamberger and others are trying to figure thatout.

Eric Sanford

Shellfish

Increasing ocean acidity makes it difficult for marine species to build their shells and, by softening calcium carbonate, makes shells weaker. That’s bad news not only for clams, oysters and scallops, but for tens of thousands of lesser known species — echinoderms like star fish and sea urchins, colonies of tiny invertebrates, reef corals and many others.

In June, The Biological Bulletin devoted an issue to research on ocean calcification with papers and reviews on a large variety of organisms.

“Climate change and ocean acidification are going to manifest themselves in the ways species interact — eating each other, facilitating each other’s growth,” said an editor of the issue, Gretchen Hofmann, a marine biologist at the University of California, Santa Barbara.

And yet, she added, there is some hope. “In coastal areas there are plants that actually change the pH of the water — in a good way. Eel grass and surf grasses can provide refuge from future acidification.”

Sophie McCoy

Coral Algae

Coralline algae are the cement that binds many reefs together. By filling the gaps between corals with a hard outer shell, these algae fortify the reef and provide shelter for growing organisms.

To produce that shell, this special algae — much like oysters and snails — require a steady supply of carbonate. But as carbonate becomes harder and harder to come by in increasingly acid oceans, the once-dominant species of coralline algae can no longer grow shells as thick as they once were. Other species are moving in to claim more territory.

For now, it might not be so bad to give these competitors a chance, said Sophie McCoy, an ecologist with the Plymouth Marine Laboratory in England, who lead a study on the phenomenon when she was at the University of Chicago earlier this year.

“In the short term, I think it might be a good thing in terms of local biodiversity,” she said. In the long run, however, “all the species of this algae will start to be affected.”

That could mean less coral overall, and less habitat for the organisms that call it home.

Michael Francis McElroy for the New York Times

Invasive Species

Biological intruders, from California’s medflies to Florida’s Burmese pythons, cost the United States billions of dollars every year. Rising temperatures and changing weather patterns may make them even harder to control.

“Biology can be very complicated, especially when climate change comes in,” said Andrew Paul Gutierrez, an ecologist at the University of California, Berkeley. “That’s going to affect these species in unknown ways.”

In a book on the subject, Dr. Gutierrez notes one jarring possibility: that higher temperatures may invite still more invasive species into fragile ecosystems.

Jim Gathany/Center for Disease Control

Malaria

Historically, the highlands of Ethiopia offered protection from deadly, mosquito-borne malaria. But perhaps not for much longer.

The disease was mitigated at higher altitudes, where cooler temperatures kept mosquitoes in check. Now, malaria is spreading into higher elevations during warmer years, then back into lower altitudes when temperatures cool.

Looking at temperature records from the two regions, there is a clear link between the changing climate and higher rates of the disease, said Mercedes Pascual, an ecologist at the University of Michigan.

“The disease is seasonal,” she said. “But climate change here could make the problem much bigger.”

She and her colleagues found that a 1.8 degree Fahrenheit temperature increase could result in an additional three million malaria cases annually in Ethiopia among those under age 15.

Força-tarefa internacional fará diagnóstico sobre polinização no mundo (Fapesp)

23 de setembro de 2014

Por Elton Alisson

Primeira avaliação da Plataforma Intergovernamental de Biodiversidade e Serviços Ecossistêmicos será sobre polinizadores, polinização e produção de alimentos. Trabalho é coordenado por pesquisador inglês e por brasileira (foto: Wikimedia)

Agência FAPESP – Um grupo de 75 pesquisadores de diversos países-membros da Plataforma Intergovernamental de Biodiversidade e Serviços Ecossistêmicos (IPBES, na sigla em inglês), que reúne 119 nações de todas as regiões do mundo, fará uma avaliação global sobre polinizadores, polinização e produção de alimentos.

O escopo do projeto foi apresentado na última quarta-feira (17/09) em São Paulo, no auditório da FAPESP, em um encontro de integrantes do organismo intergovernamental independente, voltado a organizar o conhecimento sobre a biodiversidade no mundo e os serviços ecossistêmicos.

“A ideia do trabalho é avaliar todo o conhecimento existente sobre polinização no mundo e identificar estudos necessários na área para auxiliar os tomadores de decisão dos países a formular políticas públicas para a preservação desse e de outros serviços ecossistêmicos prestados pelos animais polinizadores”, disse Vera Imperatriz Fonseca, do Instituto de Biociências da Universidade de São Paulo (USP) e do Instituto Tecnológico Vale Desenvolvimento Sustentável (ITVDS), à Agência FAPESP.

“Já estamos conhecendo melhor o problema [da crise da polinização no mundo]. Agora, precisamos identificar soluções”, disse a pesquisadora, que coordena a avaliação ao lado de Simon Potts, professor da University of Reading, do Reino Unido.

De acordo com Fonseca, há mais de 100 mil espécies de animais invertebrados polinizadores no mundo, dos quais 20 mil são abelhas. Além de insetos polinizadores – que serão o foco do relatório –, há também cerca de 1,2 mil espécies de animais vertebrados, tais como pássaros, morcegos e outros mamíferos, além de répteis, que atuam como polinizadores.

Estima-se que 75% dos cultivos mundiais e entre 78% e 94% das flores silvestres do planeta dependam da polinização por animais, apontou a pesquisadora.

“Há cerca de 300 mil espécies de flores silvestres que dependem da polinização por insetos”, disse Fonseca. “O valor anual estimado desse serviço ecossistêmico prestado por insetos na agricultura é de US$ 361 bilhões. Mas, para a manutenção da biodiversidade, é incalculável”, afirmou.

Nos últimos anos registrou-se uma perda de espécies nativas de insetos polinizadores no mundo, causada por, entre outros fatores, desmatamento de áreas naturais próximas às lavouras, uso de pesticidas e surgimento de patógenos.

Se o declínio de espécies de insetos polinizadores se tornar tendência, pode colocar em risco a produtividade agrícola e, consequentemente, a segurança alimentar nas próximas décadas, disse a pesquisadora.

“A população mundial aumentará muito até 2050 e será preciso produzir uma grande quantidade de alimentos com maior rendimento agrícola, em um cenário agravado pelas mudanças climáticas. A polinização por insetos pode contribuir para solucionar esse problema”, afirmou Fonseca.

Segundo um estudo internacional, publicado na revista Current Biology, estima-se que o manejo de colmeias de abelhas utilizadas pelos agricultores para polinização – como as abelhas domésticas Apis mellifera L, amplamente criadas no mundo todo – tenha aumentado em cerca de 45% entre 1950 e 2000.

As áreas agrícolas dependentes de polinização, no entanto, também cresceram em mais de 300% no mesmo período, apontam os autores da pesquisa.

“Apesar de ter aumentado o manejo de espécies de abelhas polinizadoras, precisamos muito mais do que o que temos no momento para atender às necessidades da agricultura”, avaliou Fonseca.

O declínio das espécies de polinizadores no mundo estimula a polinização manual em muitos países. Na China, por exemplo, é comum o comércio de pólen para essa finalidade, afirmou a pesquisadora.

“Na ausência de animais para fazer a polinização, tem sido feita a polinização manual de lavouras de culturas importantes, como o dendê e a maçã. No Brasil se faz a polinização manual de maracujá , tomate e de outras culturas”, disse.

Falta de dados

Segundo Fonseca, já há dados sobre o declínio de espécies de abelhas, moscas-das-flores (sirfídeos) e de borboletas na Europa, nos Estados Unidos, no Oriente Médio e no Japão.

Um estudo internacional, publicado no Journal of Apicultural Research, apontou perdas de aproximadamente 30% de colônias de Apis mellifera L em decorrência da infestação pelo ácaro Varroa destructor, que diminui a vida das abelhas e, consequentemente, sua atividade de polinização nas flores, em especial nos países do hemisfério Norte.

Na Europa, as perdas de colônias de abelhas em decorrência do ácaro podem chegar a 53% e, no Oriente Médio, a 85%, indicam os autores do estudo. No entanto, ainda não há estimativas sobre a perda de colônias e de espécies em continentes como a América do Sul, África e Oceania.

“Não temos dados sobre esses continentes. Precisamos de informações objetivas para preenchermos uma base de dados sobre polinização em nível mundial a fim de definir estratégias de conservação em cada país”, avaliou Fonseca. “Também é preciso avaliar os efeitos de pesticidas no desaparecimento das abelhas em áreas agrícolas, que têm sido objeto de estudos e atuação dos órgãos regulatórios no Brasil.”

Outra grande lacuna a ser preenchida é a de estudos sobre interações entre espécies de abelhas polinizadoras nativas com as espécies criadas para polinização, como as Apis mellifera L.

Um estudo internacional publicado em 2013 indicou que, quando as Apis mellifera L e as abelhas solitárias atuam em uma mesma cultura, a taxa de polinização aumenta significativamente, pois elas se evitam nas flores e mudam mais frequentemente de local de coleta de alimento, explicou Fonseca.

De acordo com a pesquisadora, uma solução para a polinização em áreas agrícolas extensas tem sido o uso de colônias de polinizadores provenientes da produção de colônias em massa, como de abelhas Bombus terrestris, criadas em larga escala e inclusive exportadas.

Em 2004, foi produzido 1 milhão de colônias dessa abelha para uso na agricultura.

Na América do Sul, o Chile foi o primeiro país a introduzir essas abelhas para polinização de frutas e verduras. Em algumas áreas onde foi introduzida, entretanto, essa espécie exótica de abelha mostrou ser invasora e ter grande capacidade de ocupar novos territórios.

“É preciso estudar mais a interação entre as espécies para identificar onde elas convivem, qual a contribuição de cada uma delas na polinização e se essa interação é positiva ou negativa”, indicou Fonseca.

“Além disso, a propagação de doenças para as espécies nativas de abelhas causa preocupação e deve ser um foco da pesquisa nos próximos anos”, indicou.

Problema global

De acordo com Fonseca, a avaliação intitulada Polinizadores, polinização e produção de alimentos, do IPBES, está em fase de redação e deverá ser concluída no fim de 2015.

Além de um relatório técnico, com seis capítulos de 30 páginas cada, a avaliação também deverá apresentar um texto destinado aos formuladores de políticas públicas sobre o tema, contou.

“A avaliação sobre polinização deverá contribuir para aumentar os esforços de combate ao problema do desaparecimento de espécies de polinizadores no mundo, que é urgente e tem uma relevância política e econômica muito grande, porque afeta a produção de alimentos”, afirmou.

A avaliação será o primeiro diagnóstico temático realizado pelo IPBES e deverá ser disponibilizada para o público em geral em dezembro de 2015. O painel planeja produzir nos próximos anos outros levantamentos semelhantes sobre outros temas como espécies invasoras, restauração de habitats e cenários de biodiversidade no futuro.

Uma estratégia adotada para tornar os diagnósticos temáticos mais integrados foi a criação de forças-tarefa – voltadas à promoção da capacitação profissional e institucional, ao aprimoramento do processo de gerenciamento de dados e informações científicas e à integração do conhecimento tradicional indígena e das pesquisas locais aos processos científicos –, que deverão auxiliar na produção do texto final.

“O IPBES trabalha em parceria com a FAO [Organização das Nações Unidas para a Alimentação e a Agricultura], Unep [Programa das Nações Unidas para o Meio Ambiente], CBD [Convention on Biological Diversity], Unesco [Organização das Nações Unidas para a Educação, a Ciência e a Cultura] e todos os esforços anteriores que trataram do tema de polinização”, afirmou Fonseca.

A polinização foi o primeiro tópico a ser escolhido pelos países-membros da plataforma intergovernamental, entre outras razões, por ser um problema global e já existir um grande número de estudos sobre o assunto, contou Carlos Joly, coordenador do Programa FAPESP de Pesquisas em Caracterização, Conservação, Restauração e Uso Sustentável da Biodiversidade (BIOTA-FAPESP) e membro do Painel Multidisciplinar de Especialistas do IPBES.

“Como já há um arcabouço muito grande de dados sobre esse tema, achamos que seria possível elaborar rapidamente uma síntese. Além disso, o tema tem um impacto global muito grande, principalmente por estar associado à produção de alimentos”, avaliou Joly.

Os 75 pesquisadores participantes do projeto foram indicados pelo Painel Multidisciplinar de Especialistas do IPBES, que se baseou nas indicações recebidas dos países-membros e observadores da plataforma intergovernamental.

Dois do grupo são escolhidos para coordenar o trabalho, sendo um de um país desenvolvido e outro de uma nação em desenvolvimento.

“O convite e a seleção da professora Vera Imperatriz Fonseca como coordenadora da avaliação é reflexo da qualidade da ciência desenvolvida nessa área no Brasil e da experiência dela em trabalhar com diagnósticos nacionais”, avaliou Joly. “Gostaríamos de ter mais pesquisadores brasileiros envolvidos na elaboração dos diagnósticos do IPBES.”

Leia mais sobre a reunião do IPBES na sede da FAPESP em  http://agencia.fapesp.br/painel_intergovernamental_discute_capacitacao_para_pesquisas_em_biodiversidade/19840/

Vira-latas sob controle (Fapesp)

22 de setembro de 2014

Por Yuri Vasconcelos

Software estima a população de cães e gatos abandonados e simula estratégias que beneficiam a saúde animal e humana (foto: Wikimedia)

Revista Pesquisa FAPESP – Ninguém conhece ao certo o tamanho das populações canina ou felina no Brasil, sejam elas de animais supervisionados – que têm dono e vivem em domicílios – ou de rua.

A caracterização demográfica de cães e gatos é um passo importante para definir estratégias de manejo populacional desses animais, além de contribuir para o controle de zoonoses como a raiva e a leishmaniose visceral, que causam 55 mil mortes e 500 mil casos no mundo, respectivamente.

Para lidar melhor com esse problema, um grupo de pesquisadores da Faculdade de Medicina Veterinária (FMVZ) da Universidade de São Paulo (USP), na capital paulista, criou um software capaz de estimar com elevado índice de precisão quantos cães e gatos domiciliados vivem nas cidades brasileiras. Em breve, esse programa poderá ser acessado livremente por órgãos do Ministério da Saúde e prefeituras.

“Conhecer a população de rua é essencial. Ela é resultado do abandono de animais”, diz o médico veterinário Fernando Ferreira, professor e coordenador do programa de pós-graduação da FMVZ.

O Brasil lidera a incidência de leishmaniose visceral na América Latina com cerca de 3 mil infectados por ano, o que representa 90% do total do continente. A raiva, apesar de poder ser controlada com vacinação, ainda tem casos no país. Em 1990, foram 50 casos em humanos, situação que variou de zero a dois casos entre 2007 e 2013.

Animais abandonados representam um problema de saúde pública, porque são os principais reservatórios e transmissores dessas enfermidades. Ao mesmo tempo, esses animais são vítimas de atropelamentos, abusos e crueldade.

A técnica mais confiável para dimensionar e classificar a população canina de rua foi criada pelo Instituto Pasteur em 2002 e indica que esses animais representam cerca de 5% dos indivíduos que têm dono.

“Assim, sabendo quantos cães supervisionados vivem numa determinada região, é possível estimar quantos existem nas ruas desse mesmo lugar”, diz Ferreira. “Já que existe uma relação direta entre essas duas populações, as estratégias de controle de cães abandonados passam pelo controle reprodutivo dos animais domiciliados”, explica o pesquisador, que contou no projeto com a colaboração do professor Marcos Amaku, também da FMVZ.

Batizado com a sigla capm – iniciais em inglês de companion animal population management ou manejo populacional de cães e gatos –, o software foi desenvolvido pelo doutorando Oswaldo Santos Baquero, bolsista da FAPESP.

“No meu estudo, avalio a validade de um desenho amostral complexo para estimar o tamanho populacional de cães domiciliados em municípios brasileiros. Também elaborei um modelo matemático de dinâmica populacional para simular cenários e definir prioridades de intervenção”, conta Baquero.

Para ele, a partir da modelagem matemática é possível, por exemplo, compreender com mais facilidade que o principal efeito esperado da esterilização é o aumento da população infértil e não a diminuição do tamanho de uma população inteira.

“Modelos matemáticos da transmissão da raiva na China sugerem que a melhor forma de controlar a doença é reduzir a taxa de natalidade canina e aumentar a imunização. Essas duas ações combinadas mostraram-se mais efetivas do que o sacrifício de animais.”

Leia a reportagem completa em: http://revistapesquisa.fapesp.br/2014/09/16/vira-latas-sob-controle

Dogs can be pessimists, too (Science Daily)

Date: September 18, 2014

Source: University of Sydney

Summary: Dogs generally seem to be cheerful, happy-go-lucky characters, so you might expect that most would have an optimistic outlook on life. In fact some dogs are distinctly more pessimistic than others, new research shows.

English bulldog puppies. Some dogs are distinctly more pessimistic than others. In fact some dogs are distinctly more pessimistic than others, research from the University of Sydney shows. Credit: © B.Stefanov / Fotolia

Dogs generally seem to be cheerful, happy-go-lucky characters, so you might expect that most would have an optimistic outlook on life.

In fact some dogs are distinctly more pessimistic than others, research from the University of Sydney shows.

“This research is exciting because it measures positive and negative emotional states in dogs objectively and non-invasively. It offers researchers and dog owners an insight into the outlook of dogs and how that changes,” said Dr Melissa Starling, from the Faculty of Veterinary Science. Her PhD research findings are published in PLOS One today.

“Finding out as accurately as possible whether a particular dog is optimistic or pessimistic is particularly helpful in the context of working and service dogs and has important implications for animal welfare.”

Dogs were taught to associate two different sounds (two octaves apart) with whether they would get the preferred reward of milk or instead get the same amount of water. Once the dogs have learnt the discrimination task, they are presented with ‘ambiguous’ tones.

If dogs respond after ambiguous tones, it shows that they expect good things will happen to them, and they are called optimistic. They can show how optimistic they are by which tones they respond to. A very optimistic dog may even respond to tones that sound more like those played before water is offered.

“Of the dogs we tested we found more were optimistic than pessimistic but it is too early to say if that is true of the general dog population,” said Dr Starling.

However it does mean that both individuals and institutions (kennels, dog minders) can have a much more accurate insight into the emotional make-up of their dogs.

According to the research a dog with an optimistic personality expects more good things to happen, and less bad things. She will take risks and gain access to rewards. She is a dog that picks herself up when things don’t go her way, and tries again. Minor setbacks don’t bother her.

If your dog has a pessimistic personality, he expects less good things to happen and more bad things. This may make him cautious and risk averse. He may readily give up when things don’t go his way, because minor setbacks distress him. He may not be unhappy per se, but he is likely to be most content with the status quo and need some encouragement to try new things.

“Pessimistic dogs appeared to be much more stressed by failing a task than optimistic dogs. They would whine and pace and avoid repeating the task while the optimistic dogs would appear unfazed and continue,” said Dr Starling.

“This research could help working dog trainers select dogs best suited to working roles. If we knew how optimistic or pessimistic the best candidates for a working role are, we could test dogs’ optimism early and identify good candidates for training for that role. A pessimistic dog that avoids risks would be better as a guide dog while an optimistic, persistent dog would be more suited to detecting drugs or explosives.”

Dr Starling has been working with Assistance Dogs Australia, a charity organisation that provides service and companion dogs to people with disabilities, to investigate whether an optimism measure could aid in selecting suitable candidates for training.

The research not only suggests how personality may affect the way dogs see the world and how they behave but how positive or negative their current mood is.

“This research has the potential to completely remodel how animal welfare is assessed. If we know how optimistic or pessimistic an animal usually is, it’s possible to track changes in that optimism that will indicate when it is in a more positive or negative emotional state than usual,” said Dr Starling.

“The remarkable power of this is the opportunity to essentially ask a dog ‘How are you feeling?’ and get an answer. It could be used to monitor their welfare in any environment, to assess how effective enrichment activities might be in improving welfare, and pinpoint exactly what a dog finds emotionally distressing.”

Journal Reference:
  1. Melissa J. Starling, Nicholas Branson, Denis Cody, Timothy R. Starling, Paul D. McGreevy. Canine Sense and Sensibility: Tipping Points and Response Latency Variability as an Optimism Index in a Canine Judgement Bias Assessment. PLoS ONE, 2014; 9 (9): e107794 DOI:10.1371/journal.pone.0107794

Nature of war: Chimps inherently violent; Study disproves theory that ‘chimpanzee wars’ are sparked by human influence (Science Daily)

Date: September 17, 2014

Source: Lincoln Park Zoo

Summary: Of all of the world’s species, humans and chimpanzees are some of the only species to coordinate attacks on their own members. Since Jane Goodall introduced lethal inter-community killings, primatologists have debated the concept of warfare in this genus. New research from an international coalition of ape researchers has shed new light on the subject, suggesting that human encroachment and interference is not, as previous researchers have claimed, an influential predictor of chimp-on-chimp aggression.


The Ngogo males have just killed a male from a neighboring group. After the male is dead, one of the Ngogo males leaps on the body of the dead animal. Credit: Image courtesy of John Mitani 

Of all of the world’s species, humans and chimpanzees are some of the only to engage in coordinated attacks on other members of their same species. Jane Goodall was among the first to introduce the occurrence of lethal inter-community killings and since then primatologists and anthropologists have long debated the concept of warfare in this genus. Research theories have pointed to increased gains and benefits of killing off competitors and opening up increased access to key resources such as food or mates. In contrast, others have argued that warfare is a result of human impact on chimpanzees, such as habitat destruction or food provisioning, rather than adaptive strategies.

New research from an international coalition of ape researchers, published September 18 in the journalNature, has shed new light on the subject, suggesting that human encroachment and interference is not, as previous researchers have claimed, an influential predictor of chimp-on-chimp aggression.

The study began as a response to a growing number of commentators claiming that chimpanzee violence was caused by human impacts. “This is an important question to get right. If we are using chimpanzees as a model for understanding human violence, we need to know what really causes chimpanzees to be violent,” said University of Minnesota researcher Michael L. Wilson, lead author on the study.

“Humans have long impacted African tropical forests and chimpanzees, and one of the long-standing questions is if human disturbance is an underlying factor causing the lethal aggression observed,” explained co-author David Morgan, PhD, research fellow with the Lester E Fisher Center for the Study and Conservation of Apes at Lincoln Park Zoo in Chicago. Morgan has studied chimpanzees deep in the forests of Republic of Congo for 14 years. “A key take-away from this research is that human influence does not spur increased aggression within or between chimpanzee communities.”

A team of 30 ape researchers assembled extensive data sets spanning five decades of research gathered from 18 chimpanzee communities experiencing varying degrees of human influence. In all, data included pattern analysis of 152 killings by chimpanzees. The key findings indicate that a majority of violent attackers and victims of attack are male chimpanzees, and the information is consistent with the theory that these acts of violence are driven by adaptive fitness benefits rather than human impacts.

“Wild chimpanzee communities are often divided into two broad categories depending on whether they exist in pristine or human disturbed environments,” explained Morgan. “In reality, however, human disturbance can occur along a continuum and study sites included in this investigation spanned the spectrum. We found human impact did not predict the rate of killing among communities.

“The more we learn about chimpanzee aggression and factors that trigger lethal attacks among chimpanzees, the more prepared park managers and government officials will be in addressing and mitigating risks to populations particularly with changing land use by humans in chimpanzee habitat,” explained Morgan.

Journal Reference:

  1. Michael L. Wilson, Christophe Boesch, Barbara Fruth, Takeshi Furuichi, Ian C. Gilby, Chie Hashimoto, Catherine L. Hobaiter, Gottfried Hohmann, Noriko Itoh, Kathelijne Koops, Julia N. Lloyd, Tetsuro Matsuzawa, John C. Mitani, Deus C. Mjungu, David Morgan, Martin N. Muller, Roger Mundry, Michio Nakamura, Jill Pruetz, Anne E. Pusey, Julia Riedel, Crickette Sanz, Anne M. Schel, Nicole Simmons, Michel Waller, David P. Watts, Frances White, Roman M. Wittig, Klaus Zuberbühler, Richard W. Wrangham. Lethal aggression in Pan is better explained by adaptive strategies than human impacts. Nature, 2014; 513 (7518): 414 DOI: 10.1038/nature13727

What’s the Beef? (Slate)

No, “Meatless Monday” is not an evil vegetarian plot to deprive our children of precious steak, pork, and chicken.

Photo by Debbi Morello/Getty Images

First-grader Christina Muse, pictured on Oct. 15, 2002, at North Hampton School in New Hampshire, taunts the meat industry by eating cheese pizza. Photo by Debbi Morello/Getty Images

The meat industry has a serious case of the Mondays. A growing number of school districts, including ones in Los Angeles, San Diego, and Miami, are committing to keep meat off the menu for one day a week to combat childhood obesity. These “Meatless Monday” initiatives have drawn the ire of America’s beef, poultry, and pork interests, which see them as the first, flesh-free volley in a war against America’s meat peddlers. The less-meat movement has also proved to be a flashpoint for elected officials, namely those from farm states, who seem to be placing the economic interests of their home-state industries above the health and wellbeing of their states’ populaces.

This story played out somewhat quietly on the national stage several years ago, when a few grandstanding politicians caught wind of an interoffice newsletter at the U.S. Department of Agriculture suggesting employees consider eating less meat. Now, it’s getting more attention at the local level. This week Todd Staples, the head of Texas’ Agriculture Department, unleashed a blistering—if largely fact-free—jeremiad against the Meatless Monday movement after learning that it had been enacted by elementary schools in Dripping Springs, an Austin suburb. (He was apparently unaware that several schools in Houston have been experimenting with the idea for some time.) “Restricting children’s meal choice to not include meat is irresponsible and has no place in our schools,” Staples wrote inan op-ed published by the Austin American-Statesman. “This activist movement called ‘Meatless Monday’ is a carefully orchestrated campaign that seeks to eliminate meat from Americans’ diets seven days a week—starting with Mondays.” Dun dun DUN!

An elected official like Staples can, of course, stake out a position that aligns with a particular industry without simply being a mouthpiece for it. But the agriculture commissioner’s overblown rhetoric echoes the official company line of the meat industry, which has filled his campaign coffers with at least $116,000 since 2010, according to public records. It’s hard to fault meat producers for wanting people to eat more meat. It’s a different story, though, when someone like Staples spouts such talking points at a time when the nation is battling both an obesity epidemic and a global climate crisis—two problems driven, at least in part, by resource-intensive meat production.

In some corners of the country, neither of those concerns is seen as much of a reason to impose mandates from above. The irony here is that the Dripping Springs initiative is a local one—the very type of decision that small-government advocates say is under attack from the national school-lunch standards championed by Michelle Obama. “Are we having a war on meat in Dripping Springs? Definitely not,” John Crowley, the head of nutrition services for the school district, told a local CBS affiliate this week. “We’re trying to think outside the box, and we serve a lot of Texas beef on our menus. We’ve had requests for more vegetarian options, and I thought, ‘Why don’t I give it a try and see how it’s received by kids?’ ”

This is a message that kids should be receiving. According to the 2011 National Survey of Children’s Health, nearly one-third of American kids are either overweight or obese, a classification linked to Type 2 diabetes and myriad other health problems. The meat industry, meanwhile, is one of the top contributors to climate change, with the United Nations estimating that it directly or indirectly produces about 14.5 percent of the world’s anthropogenic greenhouse gas emissions. Everyone from the American Heart Association to the Norwegian military has touted the health and environmental benefits of eating less meat.

Such endorsements mean little to Staples and his meat-minded allies, who either downplay or downright deny the benefits of curbing meat consumption. But their dire warnings of The End of Meat aside, their argument also fails on a smaller scale. Opponents routinely overlook the fact that meatless meals are not by definition protein-free, a claim at the heart of Staples’ op-ed. “It is important to remember that for many underprivileged children the meals they eat at school often represents their best meals of the day,” the Republican commissioner wrote. “To deprive them of a meat-based protein during school lunch is most likely depriving them of their only source of protein for the day.”

That makes no sense given that Meatless Monday menus include items like bean-and-cheese burritos and cheese pizza, meals that come with a hefty serving of protein—and, thanks to dairy, animal protein at that. Meanwhile, the national school lunch program requires schools to offer a weekly menu that meets a minimum threshold for protein, so a Dripping Springs student who goes meatless on Monday is in little danger of being protein-deprived come Friday. Kids who want a ham sandwich, meanwhile, are still welcome to bring one from home—and there are obviously no restrictions on what a child can eat outside school. The participating cafeterias, meanwhile, continue to serve up a variety of meats the rest of the week.

Following Staples’ logic will take you to an absurd place. If a lunch menu is an edict from on high as he suggests, then when a cafeteria serves a hamburger but not a hot dog, it is “forcing” kids to eat beef while “denying” them pork—or any number of food items not on that particular day’s menu, for that matter, be it chicken, fish, or atarragon shallot egg salad sandwich with a side of butternut squash soup with chestnuts.

As commissioner, Staples oversees the agency that administers the school lunch programs in his state. There appears to be little he can do, at least formally, to stop the cafeterias’ Meatless Mondays from spreading their steak-free sentiments across the rest of Texas. “As long as [the schools] follow the requirements of the National School Lunch Program, they can serve anything they want,” says Humane Society of the United States food policy director Eddie Garza, who worked with the Dripping Springs cafeterias to implement the program. “Staples doesn’t have any real weight on this other than writing op-eds.”

While Staples’ formal power may be limited, his industry allies have managed to score meaty victories in the past. Last summer they managed to squash a small-scale Meatless Monday program in Capitol Hill cafeterias in a matter of days by branding it “an acknowledged tool of animal rights and environmental organizations who seek to publicly denigrate U.S. livestock and poultry production.”

One of their more notable wins came in 2012, after the U.S. Department of Agriculture published that interoffice newsletter. It read, in part: “One simple way to reduce your environmental impact while dining at our cafeterias is to participate in the ‘Meatless Monday’ initiative.” The backlash from the industry—and the backtracking from the agency that followed—was strong and instantaneous. Almost immediately after the National Cattlemen’s Beef Association publicly voiced its anger, farm-state lawmakers like Iowa Republicans Chuck Grassley and Steve King scrambled to fall in line. Sen. Grassley tweeted, “I will eat more meat on Monday to compensate for stupid USDA recommendation [about] a meatless Monday.” Rep. King was even more specific with his plan, promising to stage his own “double rib-eye Mondays” in protest. “With extreme drought conditions plaguing much of the United States, the USDA should be more concerned about helping drought-stricken producers rather than demonizing an industry reeling from the lack of rain,” Kansas Republican Sen. Jerry Moran told Agriculture Secretary Tom Vilsack in a statementthat appeared all the more short-sighted given the realities of climate change.

Before the day was out, the newsletter was taken offline, and the USDA issued a statement saying that it “does not endorse Meatless Monday.” The newsletter—which also offered a variety of other small-scale energy-efficiency tips for agency employees—“was posted without proper clearance,” according to the department.

Unwilling to forgive and forget, Staples chimed in by calling for the employee who wrote the newsletter to be fired, calling the very suggestion that people eat less meat “treasonous.” “Last I checked,” Staples said then, “USDA had a very specific duty to promote and champion American agriculture. Imagine Ford or Chevy discouraging the purchase of their pickup trucks. Anyone else see the absurdity? How about the betrayal?”

That type of twisted logic only works in a world where agriculture officials serve the food industry and not the American public. Unfortunately, that feels like it’s the case all too often.

Josh Voorhees is a Slate senior writer. He lives in Iowa City.

Study traces ecological collapse over 6,000 years of Egyptian history (Science Daily)

Date: September 8, 2014

Source: University of California – Santa Cruz

Summary: Depictions of animals in ancient Egyptian artifacts have helped scientists assemble a detailed record of the large mammals that lived in the Nile Valley over the past 6,000 years. A new analysis of this record shows that species extinctions, probably caused by a drying climate and growing human population in the region, have made the ecosystem progressively less stable. 

Carved rows of animals, including elephants, lions, a giraffe, and sheep, cover both sides of the ivory handle of a ritual knife from the Predynastic Period in Egypt. Credit: Charles Edwin Wilbour Fund, Brooklyn Museum

Depictions of animals in ancient Egyptian artifacts have helped scientists assemble a detailed record of the large mammals that lived in the Nile Valley over the past 6,000 years. A new analysis of this record shows that species extinctions, probably caused by a drying climate and growing human population in the region, have made the ecosystem progressively less stable.

The study, published September 8 in Proceedings of the National Academy of Sciences (PNAS), found that local extinctions of mammal species led to a steady decline in the stability of the animal communities in the Nile Valley. When there were many species in the community, the loss of any one species had relatively little impact on the functioning of the ecosystem, whereas it is now much more sensitive to perturbations, according to first author Justin Yeakel, who worked on the study as a graduate student at the University of California, Santa Cruz, and is now a postdoctoral fellow at the Santa Fe Institute.

Around six millennia ago, there were 37 species of large-bodied mammals in Egypt, but only eight species remain today. Among the species recorded in artwork from the late Predynastic Period (before 3100 BC) but no longer found in Egypt are lions, wild dogs, elephants, oryx, hartebeest, and giraffe.

“What was once a rich and diverse mammalian community is very different now,” Yeakel said. “As the number of species declined, one of the primary things that was lost was the ecological redundancy of the system. There were multiple species of gazelles and other small herbivores, which are important because so many different predators prey on them. When there are fewer of those small herbivores, the loss of any one species has a much greater effect on the stability of the system and can lead to additional extinctions.”

The new study is based on records compiled by zoologist Dale Osborne, whose 1998 book The Mammals of Ancient Egypt provides a detailed picture of the region’s historical animal communities based on archaeological and paleontological evidence as well as historical records. “Dale Osborne compiled an incredible database of when species were represented in artwork and how that changed over time. His work allowed us to use ecological modeling techniques to look at the ramifications of those changes,” Yeakel said.

The study had its origins in 2010, when Yeakel visited a Tutankhamun exhibition in San Francisco with coauthor Nathaniel Dominy, then an anthropology professor at UC Santa Cruz and now at Dartmouth. “We were amazed at the artwork and the depictions of animals, and we realized they were recording observations of the natural world. Nate was aware of Dale Osborne’s book, and we started thinking about how we could take advantage of those records,” Yeakel said.

Coauthor Paul Koch, a UCSC paleontologist who studies ancient ecosystems, helped formulate the team’s approach to using the records to look at the ecological ramifications of the changes in species occurrences. Yeakel teamed up with ecological modelers Mathias Pires of the University of Sao Paolo, Brazil, and Lars Rudolf of the University of Bristol, U.K., to do a computational analysis of the dynamics of predator-prey networks in the ancient Egyptian animal communities.

The researchers identified five episodes over the past 6,000 years when dramatic changes occurred in Egypt’s mammalian community, three of which coincided with extreme environmental changes as the climate shifted to more arid conditions. These drying periods also coincided with upheaval in human societies, such as the collapse of the Old Kingdom around 4,000 years ago and the fall of the New Kingdom about 3,000 years ago.

“There were three large pulses of aridification as Egypt went from a wetter to a drier climate, starting with the end of the African Humid Period 5,500 years ago when the monsoons shifted to the south,” Yeakel said. “At the same time, human population densities were increasing, and competition for space along the Nile Valley would have had a large impact on animal populations.”

The most recent major shift in mammalian communities occurred about 100 years ago. The analysis of predator-prey networks showed that species extinctions in the past 150 years had a disproportionately large impact on ecosystem stability. These findings have implications for understanding modern ecosystems, Yeakel said.

“This may be just one example of a larger pattern,” he said. “We see a lot of ecosystems today in which a change in one species produces a big shift in how the ecosystem functions, and that might be a modern phenomenon. We don’t tend to think about what the system was like 10,000 years ago, when there might have been greater redundancy in the community.”

 

Journal Reference:

  1. Justin D. Yeakel, Mathias M. Pires, Lars Rudolf, Nathaniel J. Dominy, Paul L. Koch, Paulo R. Guimarães, Jr., and Thilo Gross. Collapse of an ecological network in Ancient Egypt. PNAS, September 8, 2014 DOI: 10.1073/pnas.1408471111

Proposta proíbe uso de animais em pesquisa de produtos cosméticos (Agência Senado)

Segunda-feira, 8 de setembro de 2014

Projeto de lei do Senado aguarda a designação de relator na Comissão de Ciência, Tecnologia, Inovação, Comunicação e Informática

Pode ser aprovado ainda este ano o projeto de lei do Senado (PLS 45/2014) que proíbe o uso de animais na pesquisa e no desenvolvimento de produtos cosméticos e de higiene pessoal. A proposta, de autoria do senador licenciado Alvaro Dias (PSDB-PR), aguarda a designação de relator na Comissão de Ciência, Tecnologia, Inovação, Comunicação e Informática (CCT), onde será apreciada em decisão terminativa.

O objetivo de Alvaro Dias altera a lei que estabeleceu procedimentos para o uso científico de animais (Lei 11.794/2008) para vedar “a utilização de animais na pesquisa e no desenvolvimento de produtos cosméticos e de higiene pessoal”.

De acordo com Alvaro Dias, esse tipo de proibição é “uma tendência mundial”, visto que a União Europeia já proibiu essa prática.

“Já existem diversas alternativas para avaliações de segurança nessas pesquisas, a exemplo da modelagem biológica, da modelagem computadorizada e de métodos ‘in vitro’ baseados no cultivo de células, sem a necessidade de submeter animais a procedimentos cruéis”, afirma o senador paranaense na justificação do PLS.

O PLS 45/2014 está sendo analisado em conjunto com o PLS 438/2013, do senador Valdir Raupp (PMDB-RO), que também trata do assunto. A proposta de Raupp muda a mesma lei para determinar que os testes com animais para a produção de cosméticos não são considerados como atividades de pesquisa científica.

Ao justificar seu projeto, Raupp acrescenta que também Índia, Israel e Canadá não aceitam mais testes em cobaias animais para fins cosméticos. No Brasil, informa o senador, a empresa Natura segue as diretrizes da União Europeia e não realiza testes em animais desde 2003.

“Os cosméticos apresentam uma gama maior de métodos que torna possível, em muitos casos, evitar o uso de animais. Nesse sentido, entendemos que os testes de cosméticos em animais é uma prática desnecessária, ultrapassada e notoriamente duvidosa, já que causa sofrimento considerável nos animais”, opina o senador por Rondônia.

(Agência Senado)

Brain circuit differences reflect divisions in social status (Science Daily)

Date: September 2, 2014

Source: University of Oxford

Summary: Life at opposite ends of primate social hierarchies is linked to specific brain networks, research has shown. The more dominant you are, the bigger some brain regions are. If your social position is more subordinate, other brain regions are bigger.

 

Group of young barbary macaques (stock image). The research determined the position of 25 macaque monkeys in their social hierarchy and then analyzed non-invasive scans of their brains that had been collected as part of other ongoing University research programs. The findings show that brain regions in one neural circuit are larger in more dominant animals. The regions composing this circuit are the amygdala, raphe nucleus and hypothalamus. Credit: © scphoto48 / Fotolia

Life at opposite ends of primate social hierarchies is linked to specific brain networks, a new Oxford University study has shown.

The importance of social rank is something we all learn at an early age. In non-human primates, social dominance influences access to food and mates. In humans, social hierarchies influence our performance everywhere from school to the workplace and have a direct influence on our well-being and mental health. Life on the lowest rung can be stressful, but life at the top also requires careful acts of balancing and coalition forming. However, we know very little about the relationship between these social ranks and brain function.

The new research, conducted at the University of Oxford, reveals differences between individual primate’s brains which depend on the their social status. The more dominant you are, the bigger some brain regions are. If your social position is more subordinate, other brain regions are bigger. Additionally, the way the brain regions interact with each other is also associated with social status. The pattern of results suggests that successful behaviour at each end of the social scale makes specialised demands of the brain.

The research, led by Dr MaryAnn Noonan of the Decision and Action Laboratory at the University of Oxford, determined the position of 25 macaque monkeys in their social hierarchy and then analysed non-invasive scans of their brains that had been collected as part of other ongoing University research programs. The findings, publishing September 2 in the open access journal PLOS Biology, show that brain regions in one neural circuit are larger in more dominant animals. The regions composing this circuit are the amygdala, raphe nucleus and hypothalamus. Previous research has shown that the amygdala is involved in learning, and processing social and emotional information. The raphe nucleus and hypothalamus are involved in controlling neurotransmitters and neurohormones, such as serotonin and oxytocin. The MRI scans also revealed that another circuit of brain regions, which collectively can be called the striatum, were found to be larger in more subordinate animals. The striatum is known to play a complex but important role in learning the value of our choices and actions.

The study also reports that the brain’s activity, not just its structure, varies with position in the social hierarchy. The researchers found that the strength with which activity in some of these areas was coupled together was also related to social status. Collectively, these results mean that social status is not only reflected in the brain’s hardware, it is also related to differences in the brain’s software, or communication patterns.

Finally, the size of another set of brain regions correlated not only with social status but also with the size of the animal’s social group. The macaque groups ranged in size between one and seven. The research showed that grey matter in regions involved in social cognition, such as the mid-superior temporal sulcus and rostral prefrontal cortex, correlated with both group size and social status. Previous research has shown that these regions are important for a variety of social behaviours, such as interpreting facial expressions or physical gestures, understanding the intentions of others and predicting their behaviour.

“This finding may reflect the fact that social status in macaques depends not only on the outcome of competitive social interactions but on social bonds formed that promote coalitions,” says Matthew Rushworth, the head of the Decision and Action Laboratory in Oxford. “The correlation with social group size and social status suggests this set of brain regions may coordinate behaviour that bridges these two social variables.”

The results suggest that just as animals assign value to environmental stimuli they may also assign values to themselves — ‘self-values’. Social rank is likely to be an important determinant of such self-values. We already know that some of the brain regions identified in the current study track the value of objects in our environment and so may also play a key role in monitoring longer-term values associated with an individual’s status.

The reasons behind the identified brain differences remain unclear, particularly whether they are present at birth or result from social differences. Dr Noonan said: “One possibility is that the demands of a life in a particular social position use certain brain regions more frequently and as a result those areas expand to step up to the task. Alternatively, it is possible that people born with brains organised in a particular way tend towards certain social positions. In all likelihood, both of these mechanisms will work together to produce behaviour appropriate for the social context.”

Social status also changes over time and in different contexts. Dr Noonan added: “While we might be top-dog in one circle of friends, at work we might be more of a social climber. The fluidity of our social position and how our brains adapt our behavior to succeed in each context is the next exciting direction for this area of research.”

 

Journal Reference:

  1. MaryAnn P. Noonan, Jerome Sallet, Rogier B. Mars, Franz X. Neubert, Jill X. O’Reilly, Jesper L. Andersson, Anna S. Mitchell, Andrew H. Bell, Karla L. Miller, Matthew F. S. Rushworth. A Neural Circuit Covarying with Social Hierarchy in Macaques. PLoS Biology, 2014; 12 (9): e1001940 DOI:10.1371/journal.pbio.1001940

Time flies: Breakthrough study identifies genetic link between circadian clock and seasonal timing (Science Daily)

Date: September 4, 2014

Source: University of Leicester

Summary: New insights into day-length measurement in flies have been uncovered by researchers. The study has corroborated previous observations that flies developed under short days become significantly more cold-resistant compared with flies raised in long-days, suggesting that this response can be used to study seasonal photoperiodic timing. Photoperiodism is the physiological reaction of organisms to the length of day or night, occurring in both plants and animals.

Sunrise. Photoperiodism is the physiological reaction of organisms to the length of day or night, occurring in both plants and animals. Credit: © tomaspic / Fotolia

Researchers from the University of Leicester have for the first time provided experimental evidence for a genetic link between two major timing mechanisms, the circadian clock and the seasonal timer.

New research from the Tauber laboratory at the University of Leicester, which will be published in the academic journal PLOS Genetics on 4 September, has corroborated previous observations that flies developed under short days become significantly more cold-resistant compared with flies raised in long-days, suggesting that this response can be used to study seasonal photoperiodic timing.

Photoperiodism is the physiological reaction of organisms to the length of day or night, occurring in both plants and animals.

Dr Mirko Pegoraro, a member of the team, explained: “The ability to tell the difference between a long and short day is essential for accurate seasonal timing, as the photoperiod changes regularly and predictably along the year.”

The difference in cold response can be easily seen using the chill-coma recovery assay — in which flies exposed to freezing temperatures enter a reversible narcosis. The recovery time from this narcosis reflects how cold-adaptive the flies are.

The team has demonstrated that this response is largely regulated by the photoperiod — for example, flies exposed to short days (winter-like) during development exhibit shorter recovery times (more cold adapted) during the narcosis test.

Dr Eran Tauber from the University of Leicester’s Department of Genetics explained: “Seasonal timing is a key process for survival for most organisms, especially in regions with a mild climate. In a broad range of species, from plants to mammals, the annual change in day-length is monitored by the so-called ‘photoperiodic clock’.

“Many insects for example, including numerous agricultural pests, detect the shortening of the day during the autumn and switch to diapause — a developmental arrest — which allows them to survive the winter.

“Despite intensive study of the photoperiodic clock for the last 80 years, however, the underlying molecular mechanism is still largely unknown. This is in marked contrast to our understanding of the circadian clock that regulates daily rhythms.”

The team has tested mutant strains in which the circadian clock is disrupted and has found that the photoperiodic clock was also disrupted, providing the first experimental evidence for the role of the circadian clock in seasonal photoperiodic timing in flies.

The new research is based on an automated system, allowing the monitoring of hundreds of flies, which paves the way for new insights into our understanding of the genes involved in the photoperiodic response and seasonal timing.

Professor Melanie Welham, Executive Director for Science, at the Biotechnology and Biological Sciences Research Council (BBSRC), said: “This study shows an interesting genetic link between the circadian clock and the seasonal timer. The ubiquity of these clocks across so many species makes this an important discovery which will lead to a better understanding of these essential processes.”

 

Journal Reference:

  1. Mirko Pegoraro, Joao S. Gesto, Charalambos P. Kyriacou, Eran Tauber. Role for Circadian Clock Genes in Seasonal Timing: Testing the Bünning Hypothesis.PLOS Genetics, September 2014 DOI: 10.1371/journal.pgen.1004603

Working Undercover in a Slaughterhouse: an interview with Timothy Pachirat (Medium)

Timothy Pachirat, is Assistant Professor of Political Science at the University of Massachusetts Amherst and the author of Every Twelve Seconds: Industrialized Slaughter and the Politics of Sight, an ethnographic account of his undercover job in a cattle slaughterhouse. Pachirat’s book reveals the timeless human pattern of hidden violence and reluctance to awaken to unpleasant realities that we are all implicated in by the very fact of living together in society. I interviewed him in 2012 as part of my MetaHack interview series .

 

Avi Solomon: Tell us a bit about yourself.

Timothy Pachirat: I was born and raised in northeastern Thailand in a Thai-American family. In high school, I spent a year in the high desert of rural Oregon as an exchange student where I worked on a cattle ranch, farmed alfalfa, and—improbably—became a running back for the school’s football team. Since then, I’ve lived in Illinois, Indiana, Connecticut, Alabama, Nebraska, and New York City working as a builder of housing trusses, a pizza deliverer, a behavioral therapist for children diagnosed with autism, a stay-at-home-dad, a graduate student, a slaughterhouse worker, and as an assistant professor of politics.

 

Timothy Pachirat

Avi: What alerted you to the importance of doing ethnographic fieldwork?

Timothy: Like many mixed-race, mixed-culture, and mixed-language kids, I developed something of an innate ethnographic sensibility by virtue of the complex cultural terrain I grew up in. Long before I’d ever heard the word ‘ethnography,’ for example, I spent my undergraduate fall and spring breaks sleeping alongside and getting to know unhoused men and women on Lower Wacker Drive in Chicago as a way of making some sense of the vast inequalities I perceived in American society and in the world. While pursuing a Ph.D. in political science at Yale University, it seemed natural to gravitate to a research orientation that would allow me to engage bodily—as participant and as observer—with the lived experiences of people I might not otherwise ever come into contact with. I was learning a lot of fancy theories that were thrilling on paper, and I was learning some powerful techniques of statistical analysis, but only ethnography allowed me to weigh those made-in-the-academy concepts and techniques against the situated, specific, and beautifully complex lived experiences of the actual social worlds those concepts and techniques purported to describe and explain.

 

Avi: Why did you choose to go undercover in a slaughterhouse?

Timothy: I wanted to understand how massive processes of violence become normalized in modern society, and I wanted to do so from the perspective of those who work in the slaughterhouse. My hunch was that close attention to how the work of industrialized killing is performed might illuminate not only how the realities of industrialized animal slaughter are made tolerable, but also the way distance and concealment operate in analogous social processes: war executed by volunteer armies; the subcontracting of organized terror to mercenaries; and the violence underlying the manufacturing of thousands of items and components we make contact with in our everyday lives. Like its more self-evidently political analogues—the prison, the hospital, the nursing home, the psychiatric ward, the refugee camp, the detention center, the interrogation room, and the execution chamber—the modern industrialized slaughterhouse is ‘zone of confinement,’ a ‘segregated and isolated territory,’ in the words of sociologist Zygmunt Bauman, ‘Invisible,’ and ‘on the whole inaccessible to ordinary members of society.’ I worked as an entry level worker on the kill floor of an industrialized slaughterhouse in order to understand, from the perspective of those who participate directly in them, how these zones of confinement operate.

Avi: Can you tell us about the slaughterhouse you worked in?

Timothy: Because my goal was not to write an expose of a particular place, I do not name the Nebraska slaughterhouse I worked in or use real names for the people I encountered there. The slaughterhouse employs nearly eight hundred nonunionized workers, the vast majority being immigrants from Central and South America, Southeast Asia, and East Africa. It generates over $820 million annually in sales to distributors within and outside of the United States and ranks among the top handful of cattle-slaughtering facilities worldwide in volume of production. The line speed on the kill floor is approximately three hundred cattle per hour, or one every twelve seconds. In a typical workday, between twenty-two and twenty-five hundred cattle are killed there, adding up to well over ten thousand cattle killed per five-day week, or more than half a million cattle slaughtered each year.

Avi: What jobs did you end up doing there?

Timothy: My first job was as a liver hanger in the cooler. For ten hours each day, I stood in 34 degrees cold and took freshly eviscerated livers off an overhead line and hung them on carts to be chilled for packing. I was then moved to the chutes, where I drove live cattle into the knocking box where they were shot in the head with a captive bolt gun. Finally, I was promoted to a quality-control position, a job that gave me access to every part of the kill floor and made me an intermediary between the USDA federal meat inspectors and the kill floor managers.

Avi: How did you acclimatize to the work?

Timothy: Slowly and painfully. Each job came with its own set of physical, psychological, and emotional challenges. Although it was physically demanding, my main battle hanging livers in the cooler was with the unbearable monotony. Pranks, jokes, and even physical pain became ways of negotiating that monotony. Working in the chutes took me out of the sterilized environment of the cooler and forced a confrontation with the pain and fear of each individual animal as they were driven up the serpentine line into the knocking box. Working as a quality control worker forced me to master a set of technical and bureaucratic requirements even as it made me complicit in surveillance and disciplining my former coworkers on the line. Although it’s been over seven years since I left the kill floor, I am still struck by the continued emotional and psychological impacts that come from direct participation in the routinized taking of life.

Avi: How did your coworkers treat you?

Timothy: I would never have lasted more than a few days in the slaughterhouse were it not for the kindness, acceptance, and, in some cases, friendship of my fellow line workers. They showed me how to do the work, bailed me out when I screwed up, and, more importantly, taught me how to survive the work. Still, there were divisions and tensions amongst the workers based on race, gender, and job responsibilities. In addition to showing the forms of solidarity amongst the workers, my book also details these tensions and how I navigated them.

 

“Knocking” Box

Avi: Who is a “knocker”?

Timothy: The knocker is the worker who stands at the knocking box and shoots each individual animal in the head with a captive bolt steel gun. Of 121 distinct kill floor jobs that I map and describe in the book, only the knocker both sees the cattle while sentient and delivers the blow that is supposed to render them insensible. On an average day, this lone worker shoots 2,500 individual animals at a rate of one every twelve seconds.

Avi: Who else is directly involved in killing each cow?

Timothy: After the knocker shoots the cattle, they fall onto a conveyor belt where they are shackled and hoisted onto an overhead line. Hanging upside down by their hind legs, they travel through a series of ninety degree turns that take them out of the knocker’s line of sight. There, a presticker and sticker sever the carotid arteries and jugular veins. The animals then bleed out as they travel further down the overhead chain to the tail ripper, who begins the process of removing their body parts and hides. Of over 800 workers on the kill floor, only four are directly involved in the killing of the cattle and less than 20 have a line of sight to the killing.

Avi: Were you able to interview any knockers?

Timothy: I was not able to directly interview the knocker, but I spoke with many other workers about their perceptions of the knocker. There is a kind of collective mythology built up around this particular worker, a mythology that allows for an implicit moral exchange in which the knocker alone performs the work of killing, while the work of the other 800 slaughterhouse workers is morally unrelated to that killing. It is a fiction, but a convincing one: of all the workers in the slaughterhouse, only the knocker delivers the blow that begins the irreversible process of transforming the live creatures into dead ones. If you listen carefully enough to the hundreds of workers performing the 120 other jobs on the kill floor, this might be the refrain you hear: ‘Only the knocker.’ It is simple moral math: the kill floor operates with 120+1 jobs. And as long as the 1 exists, as long as there is some plausible narrative that concentrates the heaviest weight of the dirtiest work on this 1, then the other 120 kill floor workers can say, and believe it, ‘I’m not going to take part in this.’

Avi: What are the main strategies used to hide violence in the slaughterhouse?

Timothy: The first and most obvious is that the violence of industrialized killing is hidden from society at large. Over 8.5 billion animals are killed for food each year in the United States, but this killing is carried out by a small minority of largely immigrant workers who labor behind opaque walls, most often in rural, isolated locations far from urban centers. Furthermore, laws supported by the meat and livestock industries are currently under consideration in six states that criminalize the publicizing of what happens in slaughterhouses and other animal facilities without the consent of the slaughterhouse owners. Iowa’s House of Representatives, for example, forwarded a bill to the Iowa Senate last year that would make it a felony to distribute or possess video, audio, or printed material gleaned through unauthorized access to a slaughterhouse or animal facility.

Second, the slaughterhouse as a whole is divided into compartmentalized departments. The front office is isolated from the fabrication department, which is in turn isolated from the cooler, which is in turn isolated from the kill floor. It is entirely possible to spend years working in the front office, fabrication department, or cooler of an industrialized slaughterhouse that slaughters over half a million cattle per year without ever once encountering a live animal much less witnessing one being killed.

 

Cattle Kill Floor Plan

But third and most importantly, the work of killing is hidden even at the site where one might expect it to be most visible: the kill floor itself. The complex division of labor and space acts to compartmentalize and neutralize the experience of “killing work” for each of the workers on the kill floor. I’ve already mentioned the division of labor in which only a handful of workers, out of a total workforce of over 800, are directly involved in or even have a line of sight to the killing of the animals. To give another example, the kill floor is divided spatially into a clean side and a dirty side. The dirty side refers to everything that happens while the cattle’s hides are still on them and the clean side to everything that happens after the hides have been removed. Workers from the clean side are segregated from workers on the dirty side, even during food and bathroom breaks. This translates into a kind of phenomenological compartmentalization where the minority of workers who deal with the “animals” while their hides are still on are kept separate from the majority of workers who deal with the *carcasses* after their hides have been removed. In this way, the violence of turning animal into carcass is quarantined amongst the dirty side workers, and even there it is further confined by finer divisions of labor and space.

In addition to spatial and labor divisions, the use of language is another way of concealing the violence of killing. From the moment cattle are unloaded from transport trucks into the slaughterhouse’s holding pens, managers and kill floor supervisors refer to them as ‘beef.’ Although they are living, breathing, sentient beings, they have already linguistically been reduced to inanimate flesh, to use-objects. Similarly, there is a slew of acronyms and technical language around the food safety inspection system that reduces the quality control worker’s job to a bureaucratic, technical regime rather than one that is forced to confront the truly massive taking of life. Although the quality control worker has full physical movement throughout the kill floor and sees every aspect of the killing, her interpretive frame is interdicted by the technical and bureaucratic requirements of the job. Temperatures, hydraulic pressures, acid concentrations, bacterial counts, and knife sanitization become the primary focus, rather than the massive, unceasing taking of life.

Avi: Is anyone working in the slaughterhouse consciously aware of these strategies?

Timothy: I don’t think anyone sat down and said, ‘Let’s design a slaughtering process that creates a maximal distance between each worker and the violence of killing and allows each worker to contribute without having to confront the violence directly.’ The division between clean and dirty side on the kill floor mentioned earlier, for example, is overtly motivated by a food-safety logic. The cattle come into the slaughterhouse caked in feces and vomit, and from a food-safety perspective the challenge is to remove the hides while minimizing the transfer of these contaminants to the flesh underneath. But what’s fascinating is that the effects of these organizations of space and labor are not just increased ‘efficiency’ or increased ‘food-safety’ but also the distancing and concealment of violent processes even from those participating directly in them. From a political point of view, from a point of view interested in understanding how relations of violent domination and exploitation are reproduced, it is precisely these effects that matter most.

 

Auschwitz Death Factory Plan by Sonderkommando survivor David Olere

Avi: Did the death factories of Auschwitz have the same mechanisms at work?

Timothy: I recommend Zygmunt Bauman’s superb book, Modernity and the Holocaust, for those interested in how parallel mechanisms of distance, concealment, and surveillance worked to neutralize the killing work taking place in Auschwitz and other concentration camps. The lesson here, of course, is not that slaughterhouses and genocides are morally or functionally equivalent, but rather that large-scale, routinized, and systematic violence is entirely consistent with the kinds of bureaucratic structures and mechanisms we typically associate with modern civilization. The French sociologist Norbert Elias argues—convincingly, in my view—that it is the “concealment” and “displacement” of violence, rather than its elimination or reduction, that is the hallmark of civilization. In my view, the contemporary industrialized slaughterhouse provides an exemplary case that highlights some of the most salient features of this phenomenon.

Avi: Violence is found hidden in even the most “normal” of lives. How can we spot this pervading presence in our daily life?

Timothy: We—the ‘we’ of the relatively affluent and powerful—live in a time and a spatial order in which the ‘normalcy’ of our lives requires our active complicity in forms of exploitation and violence that we would decry and disavow were the physical, social, and linguistic distances that separate us from them ever to be collapsed. This is true of the brutal and entirely unnecessary confinement and killing of billions of animals each year for food, of the exploitation and suffering of workers in Shenzhen, China who produce our iPads and cell phones, of the ‘enhanced interrogation techniques’ deployed in the name of our security, and of the ‘collateral damage’ created by the unmanned-aerial-vehicles that our taxes fund. Our complicity lies not in a direct infliction of violence but rather in our tacit agreement to look away and not to ask some very, very simple questions: Where does this meat come from and how did it get here? Who assembled the latest gadget that just arrived in the mail? What does it mean to create categories of torturable human beings? The mechanisms of distancing and concealment inherent in our divisions of space and labor and in our unthinking use of euphemistic language make it seductively easy to avoid pursuing the complex answers to these simple questions with any sort of determination.

Months after I left the slaughterhouse, I got in an argument with a brilliant friend over who was more morally responsible for the killing of the animals: those who ate meat or the 121 workers who did the killing. She maintained, passionately and with conviction, that the people who did the killing were more responsible because they were the ones performing the physical actions that took the animal’s lives. Meat eaters, she claimed, were only indirectly responsible. At the time, I took the opposite position, holding that those who benefited at a distance, delegating this terrible work to others while disclaiming responsibility for it, bore more moral responsibility, particularly in contexts like the slaughterhouse, where those with the fewest opportunities in society performed the dirty work.

I am now more inclined to think that it is the preoccupation with moral responsibility itself that serves as a deflection. In the words of philosopher John Lachs, ‘The responsibility for an act can be passed on, but its experience cannot.’ I’m keenly interested in asking what it might mean for those who benefit from physically and morally dirty work not only to assume some share of responsibility for it but also to directly experience it. What might it mean, in other words, to collapse some of the mechanisms of physical, social, and linguistic distances that separate our ‘normal’ lives from the violence and exploitation required to sustain and reproduce them? I explore some of these questions at greater length in the final chapter of my book.

 

Avi: Who was Cinci Freedom? What mythologizing purpose does she serve?

Timothy: I open the book with the story of a cow that escaped from a slaughterhouse up the street from the one I was working in. Omaha police chased the cow and cornered it in an alleyway that bordered my slaughterhouse. It happened to be during our ten minute afternoon break and many of the slaughterhouse workers witnessed the police opening fire on the animal with shotguns. The next day in the lunchroom, the anger, disgust, and horror at the police killing of the animal was palpable, as was the strong sense of identification with the animal’s treatment at the hands of the police. And yet, at the end of lunch break, workers returned to work on a kill floor that killed 2,500 animals each day.

Cinci Freedom was another Charolais cow that escaped from a Cincinnati slaughterhouse in 2002. She was recaptured after several days only with the help of thermal imaging equipment deployed from a police helicopter. Unlike the anoymous Omaha cow that was gunned down by the police, Cinci Freedom became an instant celebrity. The mayor gave her a key to the city and she was provided passage to The Farm Sanctuary in Watkins Glen, NY, where she lived until 2008.

Although at first glance the fates of the Omaha cow and of Cinci Freedom are very different, I think both responses are equally effective ways of neutralizing the threat posed by these animals. Their escapes from the slaughterhouse were not just physical escapes but also conceptual escapes, moments of rupture in an otherwise routine and normalized system of industrialized killing. Extermination and elevation to celebrity status (not unlike the ritual presidential pardoning of the Thanksgiving turkey) are both ways of containing the dangers posed by these moments of conceptual rupture. They also point to the promises and limitations of rupture as a political tactic, for example the digital ruptures that occur with the release of shocking undercover footage from slaughterhouses and other zones of confinement where the work of violence is routinely carried out on our behalf.

Is empathy in humans and apes actually different? ‘Yawn contagion’ effect studied (Science Daily)

Date: August 12, 2014

Source: PeerJ

Summary: Whether or not humans are the only empathic beings is still under debate. In a new study, researchers directly compared the ‘yawn contagion’ effect between humans and bonobos — our closest evolutionary cousins. By doing so they were able to directly compare the empathic abilities of ourselves with another species, and found that a close relationship between individuals is more important to their empathic response than the fact that individuals might be from the same species.


Scientists have found that differences in levels of emotional contagion between humans and bonobos are attributable to the quality of relationships shared by individuals. Credit: Elisa Demuru
 

Whether or not humans are the only empathic beings is still under debate. In a new study, researchers directly compared the ‘yawn contagion’ effect between humans and bonobos (our closest evolutionary cousins). By doing so they were able to directly compare the empathic abilities of ourselves with another species, and found that a close relationship between individuals is more important to their empathic response than the fact that individuals might be from the same species.

The ability to experience others’ emotions is hard to quantify in any species, and, as a result, it is difficult to measure empathy in an objective way. The transmission of a feeling from one individual to another, something known as ‘emotional contagion,’ is the most basic form of empathy. Feelings are disclosed by facial expressions (for example sorrow, pain, happiness or tiredness), and these feelings can travel from an “emitting face” to a “receiving face.” Upon receipt, the mirroring of facial expressions evokes in the receiver an emotion similar to the emotion experienced by the sender.

Yawn contagion is one of the most pervasive and apparently trivial forms of emotional contagion. Who hasn’t been infected at least once by another person’s yawn (especially over dinner)? Humans and bonobos are the only two species in which it has been demonstrated that yawn contagion follows an empathic trend, being more frequent between individuals who share a strong emotional bond, such as friends, kin, and mates. Because of this similarity, researchers sought to directly compare the two species. Over the course of five years, they observed both humans and bonobos during their everyday activities and gathered data on yawn contagion by applying the same ethological approach and operational definitions. The results of their research are published today in the peer-reviewed journal PeerJ.

Two features of yawn contagion were compared: how many times the individuals responded to others’ yawns and how quickly. Intriguingly, when the yawner and the responder were not friends or kin, bonobos responded to others’ yawns just as frequently and promptly as humans did. This means that the assumption that emotional contagion is more prominent in humans than in other species is not necessarily the case.

However, humans did respond more frequently and more promptly than bonobos when friends and kin were involved, probably because strong relationships between humans are built upon complex and sophisticated emotional foundations linked to cognition, memory, and memories. In this case, the positive feedback linking emotional affinity and the mirroring process seems to spin faster in humans than in bonobos. In humans, such over-activation may explain the potentiated yawning response and also other kinds of unconscious mimicry response, such as happy, pained, or angry facial expressions.

In conclusion, this study suggests that differences in levels of emotional contagion between humans and bonobos are attributable to the quality of relationships shared by individuals. When the complexity of social bonds, typical of humans, is not in play,Homo sapiens climb down the tree of empathy to go back to the understory which we share with our ape cousins.


Journal Reference:

  1. Elisabetta Palagi, Ivan Norscia, Elisa Demuru. Yawn contagion in humans and bonobos: emotional affinity matters more than species. PeerJ, 2014; 2: e519 DOI: 10.7717/peerj.519

ARTS OF LIVING ON A DAMAGED PLANET (Aarhus University)

ARTS OF LIVING ON A DAMAGED PLANET

 

THURSDAY, MAY 8, 2014. URSULA LE GUIN

Bettina Aptheker and Anna Tsing opened the Anthropocene Conference May 8-10, 2014 at Santa Cruz, USA and introduced keynote speaker Ursula K. Le Guin.

Keynote speech by Ursula K. Le Guin

The talk by Ursula K. Le Guin was the first event in the three days Anthropocene Conference: “Arts of Living on a Damaged Planet”. The acclaimed science fiction author gave a talk about her work in front of a completely sold out theatre. A panel discussion with Donna Haraway and James Clifford followed after her talk.

FRIDAY, MAY 9, 2014: INTRODUCTION BY ANNA TSING

On the first official day of the Anthropocene Conference Anna Tsing gave the opening speech and introduced the program.

 

Donna Haraway: ‘Anthropocene, Capitalocene, Chthulucene: Staying with the Trouble’

Sympoiesis, not autopoiesis, threads the string figure game played by Terran critters. Always many-stranded, SF is spun from science fact, speculative fabulation, science fiction, and, in French, soin de ficelles (care of/for the threads). The sciences of the mid-20th-century “new evolutionary synthesis” shaped approaches to human-induced mass extinctions and reworldings later named the Anthropocene. Rooted in units and relations, especially competitive relations, these sciences have a hard time with three key biological domains: embryology and development, symbiosis and collaborative entanglements, and the vast worlds of microbes. Approaches tuned to “multi-species becoming with” better sustain us in staying with the trouble on Terra. An emerging “new new synthesis” in trans-disciplinary biologies and arts proposes string figures tying together human and nonhuman ecologies, evolution, development, history, technology, and more. Corals, microbes, robotic and fleshly geese, artists, and scientists are the dramatis personae in this talk’s SF game.

 

Margaret McFall-Ngai: ‘The Post-Modern Synthesis in Biology’.

The Changing Landscape in Light of Advances in Molecular Biology, Genomics, and Microbiology   The impact on biology of major advances in technology cannot be overestimated. Since 2006, the cost of sequencing of genomic material has decreased from ~$6000 to ~$0.10 a megabase, enabling the field of biology to explore aspects of the form and function of the biosphere never before possible. Most notable has been our new found ability to identify and characterize the diversity of the microbial world. The data to date demonstrate that microbes are extremely diverse and that the historical focus of biology principally on animals and plants does not provide an accurate view of the biological world. This presentation will examine our current views and how the field might make the transition to a more integrated conceptual framework.

Kate Brown, “The Radiogenic Shadow”.

The experience of carrying the radiogenic legacy of the nuclear arms race is akin to the shadowy existence of radioactive isotopes itself. People who lived downwind and downstream of the world’s first plutonium plants (in the American West and the Russian Urals) have had an extremely difficult time making themselves heard or seen as victims of the plants’ massive issuance of millions of curies of radioactive isotopes into the surrounding environment over four decades of the arms race. These bystanders of nuclear exposure rarely showed up in medical and environmental studies. They were overlooked in the post-Cold War declarations of the plutonium plant territories as national sacrifice zones slated for clean-up. Courts have dismissed them as plaintiffs and denied many compensation. Recently, at the 70th anniversary of the Hanford plutonium plant, celebrants will enjoy a “James Bond theme evening,” and a Casino Royale with plutonium passes, but nothing on the program refers to downwinders or the health effects of long term exposure to low doses of radioactive isotopes. The uses of interdisciplinary research and experimental narrative forms goes part way toward figuring out how to observe and describe the existence of people whose biological existence, and that of their off-spring, are irretrievably entangled with the radioactive waste of the 20th century nuclear arms race.

Deborah Bird Rose, “Shimmer: When All You Love is Being Trashed”.

The politics of greed are doing their best to ensure that love for life’s symbiotic gifts and pleasures is denigrated and ridiculed, if not utterly destroyed. I have been working with those who are vulnerable, particularly with endangered animal species and their human defenders. In this paper I seek to open our hearts to the beauty of multispecies love in the midst of plunder.

Jens-Christian Svenning, “Future Megafaunas: A Historical Perspective on the Scope for a Wilder Anthropocene”.

A new approach to nature management is increasingly discussed and implemented, namely rewilding. It emphasizes the re-establishment of self-managing ecosystems, with species introductions to restore ecosystem functioning as a key facet. Large animals (megafauna) has received most emphasis in rewilding, reflecting the disproportionate and often dramatic losses of megafaunas around the world within the last 50,000 years and historical shifts in human-megafauna relations. I will first provide an overview the reasons for these losses and their ecological implications. I will then discuss rewilding in the context of the shifting human-megafauna relations and their current dynamics. Finally, based on these considerations I will provide a future-oriented perspective on megafaunas in the Anthropocene.

Jessica Weir, “‘Caring for Country’ and Ecological Restoration”.

Amongst the irrigated rivers of southeast Australia, Indigenous people engage in ecological restoration projects so as to build momentum for a management change that invests more in ecological and cultural integrity. Here, Indigenous people have long been marginalized in the institutions of land and water management, and the assertion of their rights and responsibilities to ‘Care for Country’ can often be confrontational. This paper considers the strategies that Indigenous people use to both fit into this space, as well as transform it, so as to create better conditions for their own knowledges and practices, including greater respect for Country. Much more than social justice, this work is about resituating humans within their environments, and more-than-humans within cultural and ethical domains (Plumwood 2013), and provides insight into one experience of articulating a rethink of nature so as to change understandings of fact and governance.

William Cronon, “The Portage: Time, Memory, and Storytelling in the Making of an American Place”.

In a lecture drawn from the first chapter of the book he is writing on the history of Portage, Wisconsin, William Cronon meditates on the roles that memory and storytelling play in human place-making. A natural ecosystem or an abstract geographical space becomes a human place, he argues, through the endless accretion of narratives that render that place meaningful for those who visit or live in it. Curiously, although Portage is virtually unknown to most Americans, it has played a surprisingly important role in shaping American ideas of nature.

Deborah Gordon, “The Evolution of Collective Behavior in Ant Colonies”.

An ant colony operates without central control. No ant can assess what needs to be done. Each ant responds to its interactions with other ants nearby. In the aggregate, these stochastic, dynamical networks of interaction regulate colony behavior. I have been studying a population of about 300 harvester ant colonies in the desert in southeastern Arizona for more than 25 years. A colony lives for 25-30 years. Harvester ant colonies regulate foraging activity according to food availability and current humidity. Colonies differ in how they regulate foraging behavior. Recently we have been able to match parent and offspring colonies. We used this to learn about colony life history and to measure colony reproductive success, to ask how collective behavior is evolving in current drought conditions. Colonies that regulate foraging so as to conserve water are having more offspring colonies. Ants are extremely diverse, and species differences in collective behavior reflect relations with diverse environments.

Anne Pringle, “Life and Death in a Petersham Cemetery: The Life Histories of Lichens”.

Lichens are ecosystems, typically formed from an individual fungus, associated photosynthetic partners, and myriad other fungi and bacteria. In October 2005 I began a survey of Xanthoparmelia lichens growing on tombstones of a New England cemetery. Each year I record the births, growth, and deaths of near to 1,000 thalli. I am using data to explore a series of questions, including: is the probability of death equivalent across years, or is death more likely at older ages? Can a lichen be immortal? I am also using genetic data to explore the demographic histories of these species, testing a hypothesis that Xanthoparmelia experienced a massive increase in numbers in the recent past, coincident with the advent of intensive farming across New England and construction of miles of stone walls. Data collected to date suggest the life history patterns of these symbiotic, modular, and indeterminate organisms may be poorly served by traditional demographic models.

Carla Freccero, “Wolf/Men”.

This paper considers the genealogy of the relationship between humans and wolves, both in material encounters and in imaginative figurations. In Jacques Derrida’s seminar on The Beast and the Sovereign, the wolf figures prominently as “wild” double of the sovereign. Both the wolf and the sovereign represent exceptions insofar as they are a law unto themselves, the one on the outside of the polis, the other mirroring him as the “tyrant” inside. From Hobbes’s famous deployment of Plautus’s phrase, “homo homini lupus,” onward, the wolf has been asked to stand in for something particularly “savage” about mankind, even as female wolves walk their own path of figural maternal mirroring. Finally, wolf-human mergers also carry with them atavistic fantasies about racial difference that continue to impress modernity with their spectral effects.

Marianne Lien, “Escapee, Homeless, and Those That ‘Wander Off’: Salmon as Rubble in Norwegian Rivers”.

In Norway, which is home to the largest living population of wild Atlantic salmon, human and salmon have guided each others’ lives in a fluid evolutionary tapestry that predates historical records. More recently, industrial development, hydroelectric power, and salmon farming have added new layers to this tapestry, and we see some salmon flourish while others are under threat.
My paper traces salmon stories from the shores of the Vosso river, where the original Vosso salmon are returning in great numbers, as a result of recent cultivation efforts. Salmon provide not only prey for anxious anglers, but data too, and as such they help to ‘domesticate’ a river, making it legible for biologists in charge. What emerges from these efforts are multiple propositions about the nature of the river, couched within a paradigm of what John Law calls a ‘one-world world’.
In my paper I will search, instead for the cracks, and the openings where the data become less certain, more indeterminate, and don’t add up. Tracing the movements of salmon that ‘wander off’, the misfits, and the ones that never quite make it, I will try to tell a story of the river which is not over-determined, but remains sensitive to the generative capacity of underwater lives. My concern is how to tell a story that allows the messiness, the damaged, and the incidental rubble, and my stories are an attempt to answer, ethnographically.

Lesley Stern, “A Garden or a Grave? The Canyonic Landscape of the Tijuana-San Diego Region”.

We stand on a dusty ledge on the edge of a canyon near a freeway and a long snaking wall, the wall that divides Tijuana and San Diego, Mexico and the U.S. On one side we look down to preserved wetlands—on the other side to a slum city. These two landscapes are forged out of one canyon, Las Laureles Canyon, through which sometimes flows (and sometimes flows disastrously) the Tijuana River. The entire Tijuana-San Diego area is built on, around, and in spite of canyons. Some, in a spirit of ecological progress, are now being Edenically restored, some are being progressively destroyed. But they are all linked. Los Laureles Canyon has served as a laboratory for various disciplinary investigations—ethnography, ecology, urban planning, border studies. …This paper, while mindful of these approaches, asks, rather, how might we write the story of the canyons and their inhabitants in that space where ideas of ‘landscape’ and conceptions of ‘the garden’ intersect. Not always harmoniously.

Roundtable Discussion with Nils Bubandt, Margaret Fitzsimmons, Peter Funch & Nora Bateson

The roundtable discussion ended the Anthropocene Conference in Santa Cruz, May 8-10, 2014.

Animalistic descriptions of violent crimes increase punishment of perpetrators (Science Daily)

Date: August 4, 2014

Source: Wiley

Summary: Describing criminals and criminal activities with animal metaphors leads to more retaliation against perpetrators by inducing the perception that they’re likely to continue engaging in violence, a new study suggests.


Describing criminals and criminal activities with animal metaphors leads to more retaliation against perpetrators by inducing the perception that they’re likely to continue engaging in violence, a new Aggressive Behavior study suggests.

When surveying jury-eligible adults, investigators varied animalistic descriptions of a violent crime and examined its effect on the severity of the punishment for the act. Compared with non-animalistic descriptions, animalistic descriptions resulted in significantly harsher punishment for the perpetrator due to an increase in perceived risk of recidivism.

“This research is yet another reminder that justice may be influenced by more than the facts of a case,” said lead author Dr. Eduardo Vasquez.

Journal Reference:

  1. Eduardo A. Vasquez, Steve Loughnan, Ellis Gootjes-Dreesbach, Ulrich Weger.The animal in you: Animalistic descriptions of a violent crime increase punishment of perpetrator. Aggressive Behavior, 2014; 40 (4): 337 DOI:10.1002/ab.21525