Sentences with phrase «in wild chimpanzees»

The «Four - Year War» from 1974 — 1978, as Goodall later described it, represents the only civil war ever observed in wild chimpanzees.

Tensions between Humphrey and his southern rivals Charlie and Hugh may have triggered the only known civil war in wild chimpanzees, researchers say.

Researchers from the University of Birmingham, UK, and University of Tübingen, Germany, looked for the spontaneous re-occurrence of a tool - use behaviour practiced in wild chimpanzees where sticks are used to «scoop» algae from the top of water surfaces.

When Peter Parham's postdoc first showed him data suggesting a gene in some wild chimpanzees infected with the AIDS virus closely resembled one that protects humans from HIV, he was skeptical.

Langergraber, who studies the evolution of cooperation and social relationships in wild chimpanzees, notes that there's compelling evidence in finches, crows, and gorillas that some behaviors — like learning to use tools or eat nettles that will sting unless they are handled just so — have genetic underpinnings.

Not exact matches

The success of Jane Goodall's (1971) scientific study of chimpanzees in the wild was dependent upon the rapport she established with her subjects and evidently also the rapport they had with her.

In May 2006, the same group of researchers who first identified the Pan troglodytes troglodytes strain of SIVcpz, announced that they had narrowed down the location of this particular strain to wild chimpanzees found in the forests of Southern CamerooIn May 2006, the same group of researchers who first identified the Pan troglodytes troglodytes strain of SIVcpz, announced that they had narrowed down the location of this particular strain to wild chimpanzees found in the forests of Southern Camerooin the forests of Southern Cameroon.

Because he was not in favor of making the league too lively, Commissioner Charles refused to sanction the hiring of such obvious wild - card prospects as a trick - shot artist who could roll seven balls down the alley simultaneously or a California chimpanzee who bowled with both hands.

Rushmore, who completed her doctorate in the Odum School of Ecology in May, analyzed the social networks of wild chimpanzees to determine which individuals were most likely to contract and spread pathogens.

He studied wild chimpanzee in the Taï Forest, Côte d'Ivoire, and he has done laboratory research with biological samples obtained from both wild and captive chimpanzees.

«It's not totally clear to me that one would need to do that same kind of testing in a group of captive chimpanzees before offering this in the wild.»

Now, in a pair of studies, researchers show that chimpanzees will give up a treat in order to help out an unrelated chimp, and that chimps in the wild go out on risky patrols in order to protect even nonkin at home.

He and his colleagues obtained feces from 24 gorillas living in Cameroon, 47 chimpanzees from Gombe National Park in Tanzania, 24 wild bonobos from the Democratic Republic of the Congo and 16 people from Connecticut.

Hauser himself, a professor of psychology, human evolutionary biology, and organismic and evolutionary biology at Harvard and codirector of the school's Mind / Brain / Behavior Initiative, has analyzed the antics of tamarins, vervet monkeys, macaques, and starlings in captivity, as well as rhesus monkeys and chimpanzees in the wild.

As if poaching, logging, habitat loss and climate change aren't bad enough, wild chimpanzees now face a new, deadly peril: a virus that causes common colds in people.

Poached ivory fetches at least $ 165 million a year in Asia while our closest living relatives — great apes like chimpanzees, gorillas and orangutans — are being kidnapped from the wild and sold to private collectors.

The finding was bad enough: During the last two decades, the population of wild chimpanzees and gorillas in the West African nations of Gabon and the Republic of the Congo has declined by more than half.

Howard Ochman of the University of Austin in Texas and his team sequenced the gut microbiomes of hundreds of wild chimpanzees, bonobos and gorillas, and those of hundreds of humans living in US cities and in Venezuela and Malawi.

Chimpanzees, an endangered species in the wild, can no longer be imported for research.

That study comes from behavioral ecologist Christophe Boesch of the Max Planck Institute for Evolutionary Anthropology, who spent years observing wild chimpanzees in the Taï National Park in Côte d'Ivoire.

A team of primatologists headed by Kevin Langergraber of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, pulled together behavioural data on nine wild chimpanzee groups, and analysed DNA samples from 246 individual apes.

In the wild, chimpanzees seemed equally likely to be left - or right - handed.

In 1960, Adriaan Kortlandt became the first animal behaviourist to gaze into the eyes of wild chimpanzees.

Thirty - five years ago, researchers studying chimpanzees in the wild noticed that neighboring communities had distinct grooming behaviors that could not be explained by differences in their environments.

The new study, published online tomorrow in the Proceedings of the Royal Society B, examines partial sequences of the mitochondrial DNA (mtDNA) from wild chimpanzees in nine different groups.

By GAIL VINES In 1960, Adriaan Kortlandt became the first animal behaviourist to gaze into the eyes of wild chimpanzees.

Teleki calculates that for every infant that survives a year at the final overseas destination, 10 chimpanzees die in transit or on arrival, or are killed in the wild by poachers — small wonder that conservationists are alarmed at the impact continued commercial exploitation will have on wild populations whose habitats are being progressively destroyed.

An institution, for example, might agree to make a financial contribution to a wild chimpanzee conservation effort in exchange for a permit to a conduct a specific study.

«It possibly puts a finger on natural selection in the act,» says Pascal Gagneux, an evolutionary biologist at the University of California, San Diego, who has done both genetic analyses of chimpanzees and behavioral studies of wild communities.

But Hahn stresses that ethics prohibit taking blood samples from wild chimpanzees, and her own lab has only recently developed a way to quantify SIVcpz in fecal samples — which she sees as an important future experiment with the Gombe chimps.

McGrew hopes that such studies will help motivate people to protect chimpanzees in the wild.

The research has been published in the latest edition of Animal Behaviour titled Grooming decisions under structural despotism: the impact of social rank and bystanders among wild male chimpanzees.

Malaria parasites, although widespread among wild chimpanzees and gorillas, have not been detected in bonobos, a chimp cousin.

A 1965 documentary about that work, Miss Goodall and the Wild Chimpanzees, turned Goodall into a global celebrity, and she has been in the public eye ever since.

Little is known about chimpanzee birth in the wild because only five births have ever been observed, says Hitonaru Nishie at Kyoto University in Japan.

Until recently, there were six known ape Laverania species that exhibited strict host specificity (association with a single host species) in wild populations — three in chimpanzees and three in western gorillas.

«Female chimpanzees don't fight for «queen bee» status: Study of social rank in wild chimps shows striking differences between the sexes.»

The study, which appeared online Oct. 14 in the journal Scientific Reports, provides the first detailed look at how social status among wild chimpanzees changes throughout their lifetimes.

Since Christophe Boesch began studying wild chimpanzees in the Taï forest in Côte d'Ivoire in 1979, the animals» populations have declined by more than two - thirds.

While in adult wild chimpanzees it is females that are more avid and competent tool users, in juvenile chimpanzees the researchers conversely found it was the young males that spent more time manipulating objects, seemingly in preparation for adult tool use.

Using the comparative approach, we use observations, non-invasive hormone sampling and field experiments to address these questions in chimpanzees and other wild primates, including bonobos, baboons and sooty mangabeys.

Away from the coastlines, there is evidence that non-human primates can hunt prey at unsustainable levels, for example wild chimpanzees (Pan troglodytes schweinfurthii) at Ngogo in Uganda hunt red colobus monkeys (Procolobus rufomitratus) at a rate that may lead to local extinction of the latter (Teelen, 2008).

In the wild, chimpanzees face any number of dire threats, ranging from poachers to predators to deforestation.

«As most of you know, I spent many, many years of my life out with the wild chimpanzees in Africa - kind of different from Pasadena.»

The research presented in this video aims at understanding the cultures of wild chimpanzee populations in several African countries and how they differ from each other.

The distribution of chimpanzee cultural behaviors in the wild may therefore be strongly affected by the identity and social characteristics of the original inventors.

However, international shipment of chimpanzee brain tissue is not feasible due to restrictions related to CITES (the Convention on International Trade in Endangered Species of Wild Fauna and Flora).

Scientists investigating an outbreak of respiratory disease in a community of wild chimpanzees in Uganda were surprised and dismayed to discover that rhinovirus C was killing healthy chimps.

Yet, despite being so closely related on the evolutionary tree, wild chimpanzees and bonobos differ hugely in the way they use tools.

Koops, in collaboration with colleagues from Kyoto University, conducted painstaking research tracking communities of wild chimpanzees and bonobos in Uganda and Congo for months, cataloguing not just all tool use, but also all potential for tool use in terms of the different environments and social time spent.