четверг, 30 января 2014 г.

Brain regions thought to be uniquely human share many similarities with monkeys

New research suggests a surprising degree of similarity in the organization of regions of the brain that control language and complex thought processes in humans and monkeys. The study, publishing online January 28 in the Cell Press journal Neuron, also revealed some key differences. The findings may provide valuable insights into the evolutionary processes that established our ties to other primates but also made us distinctly human.



The research concerns the ventrolateral frontal cortex, a region of the brain known for more than 150 years to be important for cognitive processes including language, cognitive flexibility, and decision-making. “It has been argued that to develop these abilities, humans had to evolve a completely new neural apparatus; however others have suggested precursors to these specialized brain systems might have existed in other primates,” explains lead author Dr. Franz-Xaver Neubert of the University of Oxford, in the UK.


By using non-invasive MRI techniques in 25 people and 25 macaques, Dr. Neubert and his team compared ventrolateral frontal cortex connectivity and architecture in humans and monkeys. The investigators were surprised to find many similarities in the connectivity of these regions. This suggests that some uniquely human cognitive traits may rely on an evolutionarily conserved neural apparatus that initially supported different functions. Additional research may reveal how slight changes in connectivity accompanied or facilitated the development of distinctly human abilities.


The researchers also noted some key differences between monkeys and humans. For example, ventrolateral frontal cortex circuits in the two species differ in the way that they interact with brain areas involved with hearing.


“This could explain why monkeys perform very poorly in some auditory tasks and might suggest that we humans use auditory information in a different way when making decisions and selecting actions,” says Dr. Neubert.


A region in the human ventrolateral frontal cortex — called the lateral frontal pole — does not seem to have an equivalent area in the monkey. This area is involved with strategic planning, decision-making, and multi-tasking abilities.


“This might relate to humans being particularly proficient in tasks that require strategic planning and decision making as well as ‘multi-tasking’,” says Dr. Neubert.


Interestingly, some of the ventrolateral frontal cortex regions that were similar in humans and monkeys are thought to play roles in psychiatric disorders such as attention deficit hyperactivity disorder, obsessive compulsive disorder, and substance abuse. A better understanding of the networks that are altered in these disorders might lead to therapeutic insights.




Story Source:


The above story is based on materials provided by Cell Press . Note: Materials may be edited for content and length.



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воскресенье, 26 января 2014 г.

Massachusetts: Harvard Fined for Deaths of Research Monkeys



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пятница, 24 января 2014 г.

Spider Monkey That Bit Beachwood Man Euthanized; Rabies Test Negative


A YouTube video of Brodi the spider monkey adds the message, “RIP Brodi, 1/18/2014.” According to reports, the Erie County Health Department has euthanized a spider monkey that bit a Beachwood man on the hand at a Vermilion car dealership Tuesday.


Reports also indicate that health department officials confirmed the monkey did not have rabies. The monkey was taken late Friday night and was euthanized about midnight, according to reports. Bob England, Director of Environmental Health with the Erie County Department of Health, told NewsChannel5 that transportation of Brodi without the proper enclosure was one of the violations.


Jacob Ruehlman, 20, of Vermilion, is the owner of Brodi, a 10-pound White-bellied spider monkey that bit an employee at Pat O’Brien Chevrolet, 4545 Liberty Ave.


Ruehlman said he and his twin brother, Michael, brought Brodi with them to the car dealership because they did not want to leave the animal at home alone. Ruehlman said he went home to change Brodi’s diaper and had to go to Pat O’Brien to check on his car before the auto body shop closed. He said he didn’t want to leave Brodi at home, because the monkey gets upset when parted from his owner. Brodi was sitting on Michael Ruehlman’s lap in their rental car when a Pat O’Brien employee approached the car window. The employee asked to pet Brodi, whom Jacob Ruehlman said might have felt out of his element in a strange place. “He (the employee) reached his hand right in the car,” Ruehlman said. “It wasn’t a serious bite. It looked like someone had stuck a tiny pin in his thumb.”


Full story here .

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Service-Monkey Bill Draws Opposition In Kentucky


A bill filed this week to allow primates to be used in Kentucky as service monkeys to aid paralyzed people is drawing opposition and — the sponsor says — jokes.


“Obviously there’s a lot of jokes, but this isn’t a joke,” said a tearful state Sen. John Schickel, a Republican from Union.


Schickel said in an interview Friday that he filed the bill on behalf of a Kentucky family that wants to use a service monkey to assist a girl who was paralyzed from the neck down in an automobile accident. Schickel said he is friends with her father and planned to check with the family to see if they want to go public with their story. “This is a family looking for solutions,” he said. “I don’t know if this is one or not.”


The bill is drawing criticism, however, from the Primate Rescue Center in Nicholasville, which says it is home to more than 50 “unwanted” monkeys and apes, including some that were used in programs like the one Schickel is proposing.


“The intentions of people who are in favor of this are honorable, but misguided,” said April Truitt, the center’s executive director. “Wild animals aren’t suitable as companion animals. Having a wild animal in your home puts both the animal and the owner at risk of getting injured.”


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Primate growing up with half the calories: New understanding about human health and longevity http://ift.tt/1jsNTH4



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вторник, 21 января 2014 г.

Study Finds Chimps Can Use Gestures To Communicate In Hunt for Food


Researchers at Georgia State University’s Language Research Center examined how two language-trained chimpanzees communicated with a human experimenter to find food. Their results are the most compelling evidence to date that primates can use gestures to coordinate actions in pursuit of a specific goal.


The team devised a task that demanded coordination among the chimps and a human to find a piece of food that had been hidden in a large outdoor area. The human experimenter did not know where the food was hidden, and the chimpanzees used gestures such as pointing to guide the experimenter to the food.


Full story here .

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Sluggish Metabolisms Are Key To Primates’ Long Lives


We humans and our primate kin are weird mammals. We grow slowly, bear few young, and live exceptionally long lives. Now there’s an explanation: primates simply expend less energy.


Herman Pontzer of Hunter College, New York, and colleagues have compared the average daily energy expenditure of primates with that of other mammals. His team studied animals living at the Lincoln Park Zoo in Chicago.


Pontzer found that primates expend 50 per cent less energy than other mammals of equivalent mass during an average day. “What’s more, he says the difference is not easily explained by differing activity levels: a human would need to run a whole marathon every day to be on an even energetic footing with mammals that aren’t primates.


Full story here .

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Longer Life Span Tied to Energy Use in Primates

Shaping Humanity





Excerpt One, from the Prologue:







“Shaping Humanity: How Science, Art, and Imagination Help Us Understand Our Origins.”

By John Gurche.

Yale University Press.

345 pages. $49.95.





He had not been sick, was not injured in any way. So the sight of him face down in the marsh was a shock to his family. Surely this could not be so. Surely the stillness and seeming lifelessness of his body could not mean the end of his story. In truth it did not, although the future of his story was far beyond his family’s power to imagine.


Alive! He is well and alive! Not dead, please not dead.


They call to him. The gentle rocking of his body is his only response. They wade out to him. In the quiet the buzzing of flies is obscenely loud.


No breath, no life. Move, please move. They roll him onto his back and see his face, and then they know. Moments later they are startled by a wailing sound that they find to be their own. They carry his body ashore.


Some time later, they become aware that the shadows have lengthened into long stripes. The people do not know how long they have been here, but it is time to go. The lions will be waking now. Although the stone hand axe the man carried will remain in the marsh, his body will be gone tomorrow. It does not occur to them to move it.


The man persisted as a memory for a short time among his people, day by day, year following year, until there was no one left alive who remembered him. Long before this time his body had been dragged off and partially consumed by hyenas, and much of it had been decomposed by organisms which could use its nutrients for purposes of their own.



[embedded content]

Video by Yale Press

From the making of “Shaping Humanity: How Science, Art, and Imagination Help Us Understand Our Origins.”



His bones were buried by overwashing sediment and lay undisturbed for generation upon generation, encased in earth under the hurrying clouds. Bone that had once been alive was, little by little, replaced with groundwater minerals. Thousands of generations passed: birth cries and love, struggle and bright flashes of pain, until there was no member of his species still alive.


His bones remained still, in their bed of silt, as the surface of the land shifted above them. Rains swept away sediment, floods scoured the surface, cutting into earth until, one and a half million years after his death, the water opened a window and the sun once again warmed the bone of his cheek.


* * *


Something is moving in the distance: back and forth, back and forth, scanning the surface, a figure coming closer, silhouetted against a brilliant blue sky. Closer. An unintelligible shout, and a hand reaches down to touch the bone of the cheek. A stream of sounds–like a complicated birdsong but in a lower register, and then a second figure appears, bending low over the bones.


These are the man’s descendants of fifty thousand generations. They look different, with their domed heads and delicate flat faces. They are quick and curious, prying into everything, turning every stone. They chatter incessantly in rapid-fire streams of tongue-bending, tube-modified sound, punctuated by a series of pops, clicks, and hisses.


These inheritors have swarmed the globe and colonized virtually every environment on earth. They change everything they put their hands to. Too restless and curious to stop at their own world, they have set foot upon the earth’s moon, and have sent fantastic descendants of the dead man’s hand ax on journeys deep into space to look in upon other worlds. While the bodily shape of the man’s descendants has changed only subtly from his, the hand axe’s descendants bear no visible resemblance to their ancestor. They are composed of geometric shapes of light and ore and structural petrochemical. With them, the earth’s inheritors extend their eyes, ears, and consciousness far beyond the home planet’s living envelope.


These inquisitive descendants have also devised lenses that allow them to peer through immense distances backward in time, and strange lanterns with which to illuminate the shapes of their ancestors. We are those descendants and, at a distance of one and a half million years, we are straining to see you.


Who are you? We beings from your future are using every method we can devise to bring you into focus and answer this question. We want to know you, to see your face, even to experience the world through your senses. We measure you. We generate long chains of words and numbers in our effort to understand you. Past events leave residues you have not dreamed of. Past moments can be partially accessed, and, in a limited way, we can unfold them and study them.


We sift through the debris you cast off, trying to understand the way you lived. We hold the tools that you made and feel a connection with you. Did you give a thought to the distant future of the artifact you were making? Could you have imagined that it would last for uncountable years, outlasting even your lakeside homeland?


We would so like to know about your life, what you think about when you gaze into a starry night sky. Do you wonder about your people’s future, about whether there will be heirs to inherit your world and your ways? We can answer: Yes, for we are they.


Our ways are different now. If you could meet us, how unimaginably strange we would seem to you We and our technology are more closely connected than in your time. And we as individuals are linked in ways you cannot dream of. If you could see us without fear, you might grasp in some way the geometries of our lives.


We look into your empty eye sockets and wonder what you saw. We probe inside the space within your skull in our attempts to learn about your thoughts. We can see that in some ways you are like us. In other ways, you are still very much like the animals that came before you, and you conduct the affairs of your lives and your world as an animal would. If we could experience your thoughts, would they be those of an uncomprehending animal? We have found signs of your consciousness, and in this mirror of awareness we think we see a bit of ourselves. We view ourselves as part of a larger evolutionary stream of ancestors and descendants, of which you are also a part. We cannot help feeling a powerful kinship with you. You are, after all, our physical and symbolic link to the rest of creation.


* * *


We humans have a powerful need to understand our beginnings and our relationship to the larger cosmos. Testament to the universal nature of this need is the fact that all human cultures have mythologies that address it. Many of us have times during our lives when the yearning is especially strong to experience a connection with our origins and our links to the rest of nature as fully as possible.


For most of human history, religions have addressed this kind of yearning, often aided by art as a conduit for symbolic concepts and religious awe. The origins myths they have supplied are often beautiful, and the associated imagery compelling. Earth’s human cultures have produced thousands of these, many of them mutually exclusive. Today, we have the good fortune to be living at a time when a powerful methodology of testable inquiry is revealing details of the way it actually happened. The origins story revealed so far is fantastic beyond the powers of mere human imagination. It is the story of a small corner of the universe becoming aware.


Gaining an understanding of human origins through scientific study is one way of experiencing a link to the human past. Other kinds of experience—holding in your hands the skull of an ancient ancestor, for example—fulfill the yearning for a connection in ways that transcend measurement and analysis. I have found personally that one of the more potent ways of making contact is to use the best science available to create art about our origins.


In 1984, the Smithsonian Institution started a project to tell the story of human origins in a large, ambitious new hall at the National Museum of Natural History, an exhibit which later became known as “What Does It Mean to be Human?” Primary art for the new hall would be a series of sculptures of human ancestors created by myself. In the late 1980s, progress on the new Smithsonian hall stalled, an interruption that lasted for what turned out to be twenty-three years. It was immensely disappointing at the time. It was also immensely fortuitous in the long view. In the interval I was able to do research in dissection rooms and fossil labs around the world, and to formulate a powerful methodology for the reconstruction of human ancestors. The research behind hominin reconstruction involves the use of anatomical clues preserved in a fossil to re-create a fleshed-out form for an extinct hominid. Anatomical relationships found in living relatives can be used as a primer for reading the bones of extinct species. The work included numerous dissections of every species of living great ape, including humans, and took me into fossil vaults to study remains of human ancestors. By the time work on the hall resumed in 2007, I was ready.


This book tells the stories of the creation of fifteen hominin sculptures for the Smithsonian’s new David H. Koch Hall of Human Origins, which opened in March of 2010. Aesthetically and scientifically, the challenge was: how to build into the sculptures strong personalities that would reflect their species’ adaptive narratives? Together these stories trace the outline of the larger story of human history as suggested by the fossil record known so far.


Excerpt Two from Chapter 2: Walkers and Climbers: Australopithecus afarensis (3.6 to 2.9 million years ago).


At the end of the process [of reconstructing the A.L. 444-2 skull of Australopithecus afarensis,] we have an apelike face that conveys an impression of massiveness—something like a great ape with an enhanced masticatory (chewing) system. The jaws and cheek bones are large and heavily constructed, and the chewing muscles are very well developed. The lateral flare of the cheekbones results in a very wide face. It is also a very tall face, with a large, deep lower jaw that makes up a greater portion of the height of the face than it does in living great apes or humans. The area below the mouth is nearly vertical, reflecting the orientation of the front of the mandible. The nose is flat and apelike. The jaws project forward, with a convex area between the nose and mouth.The small distance between the eyes reflects the narrow interorbital region of the skull, and this imparts a unique look in combination with the wide face.


The braincase is small.


The head is now ready to be molded and cast in lifelike silicone. I implant hair and install the eyes. What do we have at the end of this four-month process? There is information here to be sure, as many of the distinctive features of the underlying skull of A.L. 444-2 are reflected in its facial form. But it also must be a face that we can relate to as a living being. If this final phase of bringing the head to life is not successful in achieving a living presence behind the eyes, the purpose of doing a reconstruction is defeated. For the facial expression of the reconstruction, I was shooting for a kind of startling awareness–a feeling of sentience at least as powerful as that visible in the eyes of any of the living great apes. If this kind of effort is successful, you may have something truly magical at the intersection point of science and art: a conduit to a living presence from another time, enabling you to imagine in a detailed way what it would be like to see one of these creatures alive. If the work is done well, the illusion can transport a viewer from museum floor to forest floor.


We are close enough to see the individual beads of his sweat. The sheen of his skin pulses at his jaw and his temple as he chews, and we can see muscle moving under his scalp nearly at the top of his head. He is a majestic creature. There is a slight frown on his robust features. We can see him breathing, and we become aware of a slight zoo-y smell. He brushes away a fly. We are struck with a strong first impression: Ape. He is absolutely an ape. We wait for something to contradict this impression, and we see nothing. Then he opens his mouth and pulls a berry-laden branch through his front teeth, jerking his head back as he pulls. Gorillas do this, but there is something different here, something decidedly un-apelike about it. It was only for a moment, but we’ve seen it: His teeth look human. He lacks the big canine teeth of a male ape.


Calls ring out, an unnerving sound that is only marginally like a human voice. He turns his head, looks back over his shoulder in the direction of his unseen compatriots who have been foraging nearby. They are gathering to move out from this open woodland setting. Those in the trees begin climbing down; mothers gather their young. The adult male we’ve been observing tucks a few remaining berries into his cheek and, for the first time, turns to look directly at us. Not having to search, he looks at us in a way that tells us he’s known of our presence from the beginning. He continues his gaze for just a moment longer than a mere curious glance. He stands up, still keeping a wary eye on us. Then, in a very familiar motion, he turns to stride away and is gone.














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Baby Marmoset Monkey

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понедельник, 20 января 2014 г.

Reconstructing the New World monkey family tree: After landing in Americas, primates spread as far as Caribbean, Patagonia http://ift.tt/1jp2n8l



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Reconstructing the New World monkey family tree: After landing in Americas, primates spread as far as Caribbean, Patagonia



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How To Prepare Adult Monkey Food For Marmoset Monkeys

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суббота, 18 января 2014 г.

Iran Claims It Has Fired Second Monkey Into Outer Space And Safely Returned Him To Earth http://ift.tt/1mmlYs0



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Monkeys Banned From Eating Bananas At 2 British Zoos


Officials at Paignton and Bristol Zoos have pulled bananas and other fruits from simians diets. ‘Giving this fruit to animals is equivalent to giving them cake and chocolate,’ one said, citing research that shows bananas made for humans are packed with sugar and calories, causing monkeys to be hyper and aggressive.


Full story here .

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How and where to find cheap monkeys for sale



Female Capuchin Monkeys Throw Stones To Attract Males

[embedded content]


Female capuchin monkeys have been filmed throwing stones at potential mates as a form of flirtation.


The primates whine, pull faces and follow potential mates around in scenes reminiscent of the school playground.


But scientists say this is a serious business for female capuchins as it is their only chance to secure a partner.


The previously unrecorded behaviour was filmed for the BBC/Discovery Channel co-production series Wild Brazil.


Filmmakers captured the footage of bearded capuchins – a subspecies of tufted capuchins – in Serra da Capivara National Park, Brazil.


Full story here .

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Massachusetts: Harvard Fined for Deaths of Research Monkeys











The Department of Agriculture said Wednesday that it had fined Harvard Medical School $24,000 for repeated animal welfare violations at its research centers that have resulted in the deaths of four monkeys since 2011. The fine comes after a lengthy investigation into mistreatment of primates at the school’s animal research labs in Massachusetts, one of which Harvard plans to close. In one case in February 2011, a laboratory worker overdosed a monkey with anesthetic, causing it to die of liver failure. Two other monkeys died after being deprived of water, and one died after a chain attached to a toy in its cage wrapped around its neck, strangling the animal.











A version of this brief appears in print on December 19, 2013, on page A26 of the New York edition with the headline: Massachusetts: Harvard Fined For Deaths of Research Monkeys.














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Animal Humanity





TO THE EDITOR:







Re “Considering the Humanity of Nonhumans” (News Analysis, Dec. 10): If animal species have legally enforceable “rights,” the ethical premise of reciprocity requires that they must have a corresponding duty to respect the rights of others. Only when the day comes when we humans are willing to hold animals morally and legally accountable for their actions toward us, and one another, can we regard our treatment of them as being a matter of “rights” and not simply a matter of humane compassion.


Ross D. London


Passaic, N.J.


TO THE EDITOR:


James Gorman reports that scientists are impressed by the actions of Santino, a chimp at a Swedish zoo. They were apparently most impressed by Santino’s stockpiling of rocks to throw at human visitors at a later time. Santino could apparently plan for the future.


To my mind, Santino’s humanity is convincingly demonstrated simply by his hurling rocks at human visitors to the zoo. His stockpiling is simply icing on the cake, a demonstration that he is more competent than many of his fellow humans.


Thomas Potter


Washington











A version of this letter appears in print on December 17, 2013, on page D5 of the New York edition with the headline: Animal Humanity.














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четверг, 16 января 2014 г.

Harvard Fined $24,000 For Animal Mistreatment After Monkeys Die http://ift.tt/1asr3XH



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Capuchin Monkey versus Ice! Very Smart Monkey!

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среда, 15 января 2014 г.

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Primate growing up with half the calories: New understanding about human health and longevity

Jan. 13, 2014 — New research shows that humans and other primates burn 50% fewer calories each day than other mammals. The study, published January 13 in the Proceedings of the National Academy of Sciences, suggests that these remarkably slow metabolisms explain why humans and other primates grow up so slowly and live such long lives. The study also reports that primates in zoos expend as much energy as those in the wild, suggesting that physical activity may have less of an impact on daily energy expenditure than is often thought.



Most mammals, like the family dog or pet hamster, live a fast-paced life, reaching adulthood in a matter of months, reproducing prodigiously (if we let them), and dying in their teens if not well before. By comparison, humans and our primate relatives (apes, monkeys, tarsiers, lorises, and lemurs) have long childhoods, reproduce infrequently, and live exceptionally long lives. Primates’ slow pace of life has long puzzled biologists because the mechanisms underlying it were unknown.


An international team of scientists working with primates in zoos, sanctuaries, and in the wild examined daily energy expenditure in 17 primate species, from gorillas to mouse lemurs, to test whether primates’ slow pace of life results from a slow metabolism. Using a safe and non-invasive technique known as “doubly labeled water,” which tracks the body’s production of carbon dioxide, the researchers measured the number of calories that primates burned over a 10 day period. Combining these measurements with similar data from other studies, the team compared daily energy expenditure among primates to that of other mammals.


“The results were a real surprise,” said Herman Pontzer, an anthropologist at Hunter College in New York and the lead author of the study. “Humans, chimpanzees, baboons, and other primates expend only half the calories we’d expect for a mammal. To put that in perspective, a human — even someone with a very physically active lifestyle — would need to run a marathon each day just to approach the average daily energy expenditure of a mammal their size.”


This dramatic reduction in metabolic rate, previously unknown for primates, accounts for their slow pace of life. All organisms need energy to grow and reproduce, and energy expenditure can also contribute to aging. The slow rates of growth, reproduction, and aging among primates match their slow rate of energy expenditure, indicating that evolution has acted on metabolic rate to shape primates’ distinctly slow lives.


“The environmental conditions favoring reduced energy expenditures may hold a key to understanding why primates, including humans, evolved this slower pace of life,” said David Raichlen, an anthropologist at the University of Arizona and a coauthor of the study.


Perhaps just as surprising, the team’s measurements show that primates in captivity expend as many calories each day as their wild counterparts. These results speak to the health and well-being of primates in world-class zoos and sanctuaries, and they also suggest that physical activity may contribute less to total energy expenditure than is often thought.


“The completion of this non-invasive study of primate metabolism in zoos and sanctuaries demonstrates the depth of research potential for these settings. It also sheds light on the fact that zoo-housed primates are relatively active, with the same daily energy expenditures as wild primates,” said coauthor Steve Ross, Director of the Lester E. Fisher Center for the Study and Conservation of Apes at Chicago’s Lincoln Park Zoo. “Dynamic accredited zoo and sanctuary environments represent an alternative to traditional laboratory-based investigations and emphasize the importance of studying animals in more naturalistic conditions.”


Results from this study hold intriguing implications for understanding health and longevity in humans. Linking the rate of growth, reproduction, and aging to daily energy expenditure may shed light on the processes by which our bodies develop and age. And unraveling the surprisingly complex relationship between physical activity and daily energy expenditure may improve our understanding of obesity and other metabolic diseases.


More detailed study of energy expenditure, activity, and aging among humans and apes is already underway. “Humans live longer than other apes, and tend to carry more body fat,” said Pontzer. “Understanding how human metabolism compares to our closest relatives will help us understand how our bodies evolved, and how to keep them healthy.”



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Iran Reports Sending Another Monkey Into Space





TEHRAN — Iran said Saturday that it had successfully launched a monkey into space for the second time, part of an ambitious rocket program aimed at manned spaceflight.







Iran’s state television said the country used liquid fuel for the first time to launch the rocket, named Pajohesh, meaning “research” in Persian. The monkey, a male rhesus macaque named Fargam, or “Auspicious,” returned to Earth safely, state television said.


Television footage showed the rocket blasting off, and the monkey, strapped snugly into a seat. After reaching a height of 72 miles, the report said, Fargam’s capsule detached from the rocket and parachuted safely to Earth in a mission that lasted 15 minutes.


Iran often claims technological breakthroughs that are impossible to independently verify. The Islamic Republic has said it aims to send an astronaut into space.


“The launch of Pajohesh is another long step getting the Islamic Republic of Iran closer to sending a man into space,” the official Islamic Republic News Agency said.


The United States and its allies worry that technology from the space program could also be used to develop long-range missiles that could be armed with nuclear warheads. But after Iran sent a monkey into space for the first time in January, Western experts said the mission appeared to have few military implications.


In the January mission, one of two official packages of photographs of the simian space traveler depicted the wrong monkey, causing some to speculate that it had died in space or that the launch did not go well.


But Iranian officials later said one set of pictures showed an archive photograph of an alternate monkey. They said that three to five monkeys were simultaneously tested for flights and that two or three were selected as finalists. The one best suited for the mission is then chosen.











A version of this article appears in print on December 15, 2013, on page A8 of the New York edition with the headline: Iran Reports Successfully Sending Another Monkey Into Space.














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Rights Group Is Seeking Status of ‘Legal Person’ for Captive Chimpanzee

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вторник, 14 января 2014 г.

Chimpanzees Denied ‘Personhood’ Status By US Courts



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Katie the capuchin monkey tricks as of 9-30-12

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воскресенье, 12 января 2014 г.

Lemur babies of older moms less likely to get hurt



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First evidence of primates regularly sleeping in caves

Dec. 4, 2013 — Scientists have discovered that some ring-tailed lemurs in Madagascar regularly retire to limestone chambers for their nightly snoozes, the first evidence of the consistent, daily use of the same caves and crevices for sleeping among the world’s wild primates.



The ring-tailed lemurs may be opting to sleep in caves for several reasons, said University of Colorado Boulder anthropology Associate Professor Michelle Sauther, who led the study. While the cave-sleeping behavior is likely important because it provides safety from potential predators, it also can provide the primates with access to water and nutrients, help to regulate their body temperatures during cold or hot weather and provide refuge from encroaching human activities like deforestation, she said.


“The remarkable thing about our study was that over a six-year period, the same troops of ring-tailed lemurs used the same sleeping caves on a regular, daily basis,” she said. “What we are seeing is a consistent, habitual use of caves as sleeping sites by these primates, a wonderful behavioral adaptation we had not known about before.”


A paper on the subject appeared in the November issue of the journal Madagascar Conservation and Development. Funding for the project came from Primate Conservation Inc., the International Primate Society, the American Society of Primatologists, the National Geographic Society, CU-Boulder, the University of North Dakota, Colorado College and the National Science Foundation.


Although sleeping in caves by ring-tailed lemurs — which are found only in Madagascar — has likely been going on for millennia, it is only now being recognized as a regular behavior, said Sauther. The endangered Fusui langurs, slender, long-tailed Asian monkeys roughly 2 feet tall, also have been documented sleeping in caves but as a direct result of extreme deforestation, moving from cave to cave every few days. There also have been isolated reports of South African baboons sleeping in caves.


Ring-tailed lemurs are easily identified by their characteristic, black and white ringed tails, which can be twice as long as their bodies. They weigh roughly 5 pounds with a head-body length of up to 18 inches and are highly social, congregating in groups of up to 30 individuals. Sporting fox-like snouts and slender frames, they are unusual among lemurs, spending a considerable amount of time on the ground feeding on leaves and fruit and socializing, said Sauther.


In “gallery forests” near rivers, ring-tailed lemurs regularly sleep high in the canopies of tall trees. But in “spiny forests,” most of the trees with woody stems are covered in rows of spines, making them uncomfortable as well as dangerous sleeping sites because predators can easily climb them, Sauther said. The new study documents their cave sleeping behavior in the dry spiny forest habitat adjacent to limestone cliffs.


The lemur observations were made at the 104,000-acre Tsimanampesotse National Park and the Tsinjoriake Protected Area in southwestern Madagascar between 2006 and this year. The research team used field observations and motion-detector camera traps to chart the behavior and movements of 11 different troops of ring-tailed lemurs.


One of the early clues to the cave sleeping by the lemurs was their presence on limestone cliffs adjacent to spiny forest trees or on the ground when Sauther’s research team arrived at the study sites early in the morning. “They seemed to come out of nowhere, and it was not from the trees,” she said. “We were baffled. But when we began arriving at the study sites earlier and earlier in the mornings, we observed them climbing out of the limestone caves.”


The primary predator of the lemurs is a cat-like, carnivorous mammal called a fossa native only to Madagascar that is closely related to the mongoose and may weigh up to 20 pounds. Fossil evidence shows a cougar-sized relative of the fossa that only became extinct several thousand years ago likely preyed on lemurs as well, she said.


There is evidence that some early ancestors of humans in South Africa may have used caves to protect themselves from predators, said Sauther. The remains of hominids going back several million years have been found inside or near limestone caves there, and some fossil bones have evidence of damage consistent with the bite of saber-toothed cats.


“We think cave-sleeping is something ring-tailed lemurs have been doing for a long time,” she said. “The behavior may be characteristic of a deep primate heritage that goes back millions of years.”


Co-authors of the new study included Associate Professor Frank Cuozzo of the University of North Dakota, Ibrahim Antho Youssouf Jacky, Lova Ravelohasindrazana and Jean Ravoavy of the University of Toliara in Madagascar, Krista Fish of Colorado College in Colorado Springs, Colo., and Marni LaFleur of the University of Veterinary Medicine in Vienna. Fish and LaFleur are former CU-Boulder students of Sauther.


Sauther co-directs the Beza Mahafalay Lemur Biology Project in southwestern Madagascar with Cuozzo, a former CU-Boulder doctoral student. Centered at the roughly 1,500-acre Beza Mahafalay Special Reserve, the research focuses on how climate- and human-induced change affects lemur biology, behavior and survival.


Sauther and her team were aided by field observations made by students and faculty from the University of Toliara in Madagascar. In addition, undergraduate and graduate students from CU-Boulder regularly travel to Madagascar to conduct research under Sauther, including students from CU’s Undergraduate Research Opportunities Program, which provides hands-on research and fosters student-faculty relationships.


“I never thought I would have a chance as a CU undergraduate to conduct research in an exotic place like Madagascar,” said former UROP student Anthony Massaro, who was part of a team that trapped ring-tailed lemurs, measured their physical characteristics including dentition, and released them back into the wild. “Dr. Sauther and Dr. Cuozzo mentored and guided me through the process of creating and conducting a unique research project.”


Unfortunately, habitat destruction, including deforestation, is increasing in many parts of Madagascar. In southwestern Madagascar, trees are being harvested for cattle forage, construction materials and firewood, and the mining of limestone there — used for the production of cement, fertilizer and other products — is increasing. Ring-tailed lemurs are now listed as an endangered species by the International Union for the Conservation of Nature’s Species Survival Commission.


Sauther has been conducting research on Madagascar for 25 years, beginning as a University of Washington graduate student. Today she has several CU-Boulder doctoral students working with her, including James Millette, who is studying how the tooth wear of lemurs relates to their foraging behaviors.


“Madagascar is a challenging place to conduct research,” Millette said. “Part of our job is to work with local communities, because without the support of these people there would be no lemur conservation. We consider Beza, where we have been working with the community for several decades, to be a real success story.”



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Retirement Secured for Chimpanzees

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пятница, 10 января 2014 г.

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Training Your Baby Marmoset Monkey to Not Bite

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четверг, 9 января 2014 г.

Neuroscience method of optogenetics as good as electrical stimulation

Dec. 12, 2013 — Brown researchers have shown that optogenetics — a technique that uses pulses of visible light to alter the behavior of brain cells — can be as good as or possibly better than the older technique of using small bursts of electrical current. Optogenetics had been used in small rodent models. Research reported in Current Biology has shown that optogenetics works effectively in larger, more complex brains.



Neuroscientists are eagerly, but not always successfully, looking for proof that optogenetics — a celebrated technique that uses pulses of visible light to genetically alter brain cells to be excited or silenced — can be as successful in complex and large brains as it has been in rodent models.


A new study in the journal Current Biology may be the most definitive demonstration yet that the technique can work in nonhuman primates as well as, or even a little better than, the tried-and-true method of perturbing brain circuits with small bursts of electrical current. Brown University researchers directly compared the two techniques to test how well they could influence the visual decision-making behavior of two primates.


“For most of my colleagues in neuroscience to say ‘I’ll be able to incorporate [optogenetics] into my daily work with nonhuman primates,’ you have to get beyond ‘It does seem to sort of work’,” said study senior author David Sheinberg, professor of neuroscience professor affiliated with the Brown Institute for Brain Science. “In our comparison, one of the nice things is that in some ways we found quite analogous effects between electrical and optical [stimulation] but in the optical case it seemed more focused.”


Ultimately if it consistently proves safe and effective in the large, complex brains of primates, optogenetics could eventually be used in humans where it could provide a variety of potential diagnostic and therapeutic benefits.


Evidence in sight


With that in mind, Sheinberg, lead author Ji Dai and second author Daniel Brooks designed their experiments to determine whether and how much optical or electrical stimulation in a particular area of the brain called the lateral intraparietal area (LIP) would affect each subject’s decision making when presented with a choice between a target and a similar-looking, distracting character.


“This is an area of the brain involved in registering the location of salient objects in the visual world,” said Sheinberg who added that the experimental task was more cognitively sophisticated than those tested in optogenetics experiments in nonhuman primates before.


The main task for the subjects was to fixate on a central point in middle of the screen and then to look toward the letter “T” when it appeared around the edge of the screen. In some trials, they had to decide quickly between the T and a similar looking “+” or “†” character presented on opposite ends of the screen. They were rewarded if they glanced toward the T.


Before beginning those trials, the researchers had carefully placed a very thin combination sensor of an optical fiber and an electrode amid a small population of cells in the LIP of each subject. Then they mapped where on the screen an object should be in order for them to detect a response in those cells. They called that area the receptive field. With this information, they could then look to see what difference either optical or electrical stimulation of those cells would have on the subject’s inclination to look when the T or the distracting character appeared at various locations in visual space.


They found that stimulating with either method increased both subjects’ accuracy in choosing the target when it appeared in their receptive field. They also found the primates became less accurate when the distracting character appeared in their receptive field. Generally accuracy was unchanged when neither character was in the receptive field.


In other words, the stimulation of a particular group of LIP cells significantly biased the subjects to look at objects that appeared in the receptive field associated with those cells. Either stimulation method could therefore make the subjects more accurate or effectively distract them from making the right choice.


The magnitude of the difference made by either stimulation method compared to no stimulation were small, but statistically significant. When the T was in the receptive field, one research subject became 10 percentage points more accurate (80 percent vs. 70 percent) when optically stimulated and eight points more accurate when electrically stimulated. The subject was five points less accurate (73 percent vs. 78 percent) with optical stimulation and six percentage points less accurate with electrical stimulation when the distracting character was in the receptive field.


The other subject showed similar differences. In all, the two primates made thousands of choices over scores of sessions between the T and the distracting character with either kind of stimulation or none. Compared head-to-head in a statistical analysis, electrical and optical stimulation showed essentially similar effects in biasing the decisions.


Optical advantages


Although the two methods performed at parity on the main measure of accuracy, the optogenetic method had a couple of advantages, Sheinberg said.


Electrical stimulation appeared to be less precise in the cells it reached, a possibility suggested by a reduction in electrically stimulated subjects’ reaction time when the T appeared outside the receptive field. Optogenetic stimulation, Sheinberg said, did not produce such unintended effects.


Electrical stimulation also makes simultaneous electrical recording very difficult, Sheinberg said. That makes it hard to understand what neurons do when they are stimulated. Optogenetics, he said, allows for easier simultaneous electrical recording of neural activity.


Sheinberg said he is encouraged about using optogenetics to investigate even more sophisticated questions of cognition.


“Our goal is to be able to now expand this and use it again as a daily tool to probe circuits in more complicated paradigms,” Sheinberg said.


He plans a new study in which his group will look at memory of visual cues in the LIP.



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New tales told by old infections

Nov. 25, 2013 — Retroviruses are important pathogens capable of crossing species barriers to infect new hosts, but knowledge of their evolutionary history is limited. By mapping endogenous retroviruses (ERVs), retroviruses whose genes have become part of the host organism’s genome, researchers at Uppsala University, Sweden, can now provide unique insights into the evolutionary relationships of retroviruses and their host species. The findings will be published in a coming issue of Proceedings of the National Academy of Sciences (PNAS).



All retroviruses, including HIV in humans, must become part of the host cell’s genome in order to produce new viruses. When a germ line cell is infected there is a chance for the virus to be passed on to the host organism’s offspring, and for millions of years retroviruses have colonized vertebrate hosts, leaving traces in their genetic make-up as endogenous retroviruses (ERVs).


Using large-scale computer analyses, researchers in Patric Jern’s research team at Science for Life Laboratory, Department of Medical Biochemistry and Microbiology at Uppsala University, uncover new depths in retroviral diversity and find evidence for a host reservoir of one group of retroviruses, with rampant host switching throughout history. The computer screening identified nearly 90,000 ERVs from 60 host genomes sampled across vertebrate diversity, making it possible for the researchers to map host distribution, origin, and transmission of these viruses.


“Our results indicate that current infectious retrovirus diversity may be underestimated, adding credence to the possibility that many additional retroviruses may remain to be discovered in vertebrate species,” says Alexander Hayward, the lead author of the new study.


The researchers find evidence of frequent host-switching by one group of retroviruses throughout history, pointing to a rodent host reservoir and that rats may have acted as facilitators of retroviral spread across diverse mammalian hosts.


“This study demonstrates the potential of the genomic record as an important resource for improving understanding of the long term co-evolution among retroviruses and host species,” says Patric Jern.


The genomic record provided by ERVs offers improved knowledge of the evolution and frequency of past retroviral spread to evaluate future risks and limitations for horizontal transmission between different host species. This is relevant given the emergence of prominent diseases linked with retroviral infection, such as HIV, which switched hosts to humans from monkey species.


The findings are now being published in PNAS.



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Hunting a Chimp on a Killing Spree

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The 180-Pound Gorilla in the Operating Room

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Pic "A" Pal Monkeys 2

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понедельник, 6 января 2014 г.

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Reconstructing the New World monkey family tree: After landing in Americas, primates spread as far as Caribbean, Patagonia

Jan. 3, 2014 — When monkeys landed in South America 37 or more million years ago, the long-isolated continent already teemed with a menagerie of 30-foot snakes, giant armadillos and strange, hoofed mammals. Over time, the monkeys forged their own niches across the New World, evolved new forms and spread as far north as the Caribbean and as far south as Patagonia.



Duke University evolutionary anthropologist Richard Kay applied decades’ worth of data on geology, ancient climates and evolutionary relationships to uncover several patterns in primate migration and evolution in the Americas. The analysis appears online this week in the journal Molecular Phylogenetics and Evolution.


Today, more than 150 species of monkeys inhabit the New World, ranging in size from the pygmy marmoset, which weighs little more than a bar of soap, to the muriqui, a long-limbed monkey that tips the scales at 25 pounds.


“We know from molecular studies that the monkeys have their closest relatives in Africa and Asia — but that doesn’t explain how they got to South America, just that they did,” said Kay, a professor in the evolutionary anthropology department and division of earth and ocean sciences at Duke.


South America split from Africa long before monkeys evolved, and the scarcity of monkey ancestors in the North American fossil record makes a southward migration highly unlikely. That’s led scientists to speculate that the animals made the ambitious transatlantic crossing on a vegetation raft, perhaps hurled seaward by a powerful storm. Or, they could have hopped more gradually, using islands that now lie at the bottom of the ocean.


About 11 million years passed between their arrival and the first fossil evidence of monkeys in the Americas, leaving the details of their early evolution an unknown ‘ghost lineage.’ The humid, heavily forested environment of what is now the Amazon Basin has made both fossil formation and modern-day discovery difficult, but understanding what happened there is the key to New World monkey evolution.


“However they got to South America, they were evolving in the Amazon Basin, and from time to time they managed to get out of the basin,” Kay said. “So if you want to learn about what was going on in the Amazon, you have to look at its periphery.” Luckily, Kay said, scientists can do that in places like Chile and Patagonian Argentina, where he has worked collaboratively for the past quarter century.


“We know the Amazon has been warm and wet for a very long time, and that from time to time we got expansions and contractions of these climatic conditions, like an accordion.”


The Amazon Basin functioned as a reservoir of primate biodiversity. When climate and sea level were just right, the animals spread and new species emerged in peripheral regions — Patagonia, the Caribbean islands, Central America — where the geology was more conducive to fossil preservation. Kay has uncovered and meticulously studied the monkey fossils from these areas to piece together their evolutionary relationships.


“The gold standard is molecular evidence,” he said. By sequencing the DNA of living monkeys, scientists have come to a clear consensus of how the different species and genera are related. But genetic material deteriorates, so researchers studying extinct species must rely on a proxy: the minute differences in shape, size and structure in fossilized bones. “It’s the only tool we have,” said Kay, but “it does a pretty good job.”


Kay studied 399 different features of teeth, skulls and skeletons from 16 living and 20 extinct monkey species from South America and Africa. Then, using software that reconstructs evolutionary relationships, he built a family tree. He compared that to a second tree, built strictly from the molecular studies of living species, to see if the two types of studies affirmed or contradicted one another. Except for a few cases, the trees looked remarkably similar, validating conclusions based on the anatomy of fossils.


Kay also looked at how long-term changes in South America’s ancient climate, mountain-building and fluctuating sea levels might make sense of the evolutionary pattern revealed by the monkey fossils. His research zeroes in on when and how monkeys extended their ranges to the Caribbean islands and the far southern end of South America, which is thousands of miles south of where they now live and only 600 miles from Antarctica.


The analysis further explains why the lineages that evolved outside the Amazon Basin were evolutionary dead ends. When the climate in Patagonia, for instance, turned cool and arid, the primates there went extinct, leaving no living descendants. Within the past 6,000 years, monkeys of the Caribbean islands also went extinct as a result of the appearance of humans and/or sea level rise. The paper suggests these monkeys came from South America rather than Central America, floating there by chance, the same way their ancestors crossed the Atlantic.


This research was supported by National Science Foundation grants BNS-1042794 and BNS-0851272, as well as grants from the National Geographic Society and the Leakey Foundation.



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Considering the Humanity of Nonhumans






James Hill for The New York Times

Elephants, chimpanzees and some cetaceans have shown that they can recognize themselves in a mirror.




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What is a person?








“Beings who recognize themselves as ‘I’s.’ Those are persons.” That was the view of Immanuel Kant, said Lori Gruen, a philosophy professor at Wesleyan University who thinks and writes often about nonhuman animals and the moral and philosophical issues involved in how we treat them.


She was responding to questions in an interview last week after advocates used a new legal strategy to have chimpanzees recognized as legal persons, with a right to liberty, albeit a liberty with considerable limits.


The Nonhuman Rights Project, an advocacy group led by Steven M. Wise, filed writs of habeas corpus in New York last week on behalf of four captive chimpanzees: Tommy, owned by a Gloversville couple; two at Stony Brook University; and one at the Primate Sanctuary in Niagara Falls. The lawsuits were dismissed, but Mr. Wise said he planned to appeal.


He believes that the historical use of habeas corpus lawsuits as a tool against human slavery offers a model for how to fight for legal rights for nonhumans.


His case relies heavily on science. Nine affidavits from scientists that were part of the court filings offer opinions of what research says about the lives, thinking ability and self-awareness of chimpanzees.


Mr. Wise argues that chimps are enough like humans that they should have some legal rights; not the right to vote or freedom of religion — he is not aiming for a full-blown planet of the apes — but a limited right to bodily liberty. The suits asked that the chimps be freed to go to sanctuaries where they would have more freedom.


Richard L. Cupp, a law professor at Pepperdine University in California who opposes granting rights to nonhuman animals, described the legal strategy as “far outside the mainstream.” He said in an email, “The courts would have to dramatically expand existing common law for the cases to succeed.”


Lori Marino of Emory University, who studies dolphins and other cetaceans and is the science director of the Nonhuman Rights Project, said it “is about more than these four chimpanzees.” Mr. Wise, she said, “sees this as the knob that can turn a lot of things. It’s potentially transformative.”


She said she was under no illusion that rights for animals would be easy to gain. “It may not happen in anyone’s lifetime,” she said.


The science of behavior is only part of the legal argument, though it is crucial to the central idea — that chimps are in some sense autonomous. Autonomy can mean different things, depending on whether you are talking about chimpanzees, drones or robot vacuum cleaners, and whether you are using the language of law, philosophy or artificial intelligence.


Dr. Gruen sees it as a term that is fraught with problems in philosophy, but Dr. Marino said that for the purposes of the legal effort, autonomy means “a very basic capacity to be aware of yourself, your circumstances and your future.”


Science can’t be decisive in such an argument, as Dr. Gruen points out, but what it can do is support or undermine this idea of autonomy. “If you form the right kinds of questions,” she said, “there are important answers that science can give about animal cognition and animal behavior.”


Dr. Marino said that science could “contribute evidence for the kinds of characteristics that a judge may find to be part of autonomy.”


Dr. Gruen, Dr. Marino and Mr. Wise made presentations at a conference, Personhood Beyond the Human, at Yale over the weekend. They spoke in interviews related to the court case during the week before the conference.


The kind of science that supports the idea of chimpanzees as autonomous could also support the idea that many other animals fit the bill. There are affidavits related to cognitive ability, tool use, social life and many other capabilities of chimpanzees, but there are questions about how pertinent each line of evidence is.


“Is that important for being a philosophical person — tool use itself?” Dr. Gruen asked.


The issues of self-awareness and of awareness of past and future strike to the heart of a common-sense view of what personhood might be. Chimps, elephants and some cetaceans have shown that they can recognize themselves in a mirror.


But the rights project is claiming more, saying that for chimps, as Dr. Marino put it, “you know it was you yesterday, you today, you tomorrow,” and “you have desires and goals for the future.”


There is plenty of evidence that chimpanzees and other animals act for the future. Some birds hide seeds to recover in leaner times, for example.


One affidavit is from Matthias Osvath, of Lund University in Sweden, who studies the thinking ability of animals, particularly great apes and some birds. He cites a number of studies of chimps that support the idea they have a sense of the future, including resisting an immediate reward to gain a tool that will get them a larger reward.


In one well-known piece of research by Dr. Osvath, he reported on Santino, a chimp at a zoo in Sweden who stockpiled and hid rocks he would later throw at human visitors. Dr. Osvath argued that Santino had the capacity to think of himself making future use of the rocks he saved.


Science cannot prove what went on in Santino’s mind. But Dr. Marino said the cumulative evidence could be used to ask a judge, “If you look at all the evidence in total, then what kind of being could produce all that evidence?”


Not all proponents of animal welfare are convinced that calling for rights for animals is the best way to go.


Dr. Gruen said that she had misgivings about the rights approach, philosophically and politically. “My own view is that it makes more sense to think about what we owe animals.” Progress on that front in 2013, particularly for chimpanzees, has surprised and delighted many activists. The National Institutes of Health is retiring most of its chimpanzees. And the United States Fish and Wildlife Service has proposed changes that would classify all chimps, even those in laboratories, as endangered, a move that would raise obstacles to experiments on privately owned chimps.


One point to remember is that personhood does not mean being human. Robert Sapolsky, a primatologist and neuroscientist at Stanford University who was not associated with the lawsuit, said, “I think the evidence certainly suggests that chimps are self-aware and autonomous.” That still leaves a vast gap between chimps and humans, he said. Chimps may look ahead in hiding food for later, or planning “how to ambush monkeys they are hunting.” Humans, he noted, could think about “the consequences of global warming for their grandchildren’s grandchildren, or of the sun eventually dying, or of them eventually dying.”











A version of this news analysis appears in print on December 10, 2013, on page D1 of the New York edition with the headline: The Humanity of Nonhumans.














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Rights Group Is Seeking Status of ‘Legal Person’ for Captive Chimpanzee

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