Sentences with phrase «wild chimpanzees»

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.

That's why scientists, investigating an outbreak of respiratory disease in a community of wild chimpanzees in Uganda's Kibale National Park, were surprised and dismayed to discover that a human «common cold» virus known as rhinovirus C was killing healthy chimps.

The bottom line, he says, is if the rule is implemented, it gives FWS leverage to push for conservation benefits for wild chimpanzees.

Two groups studying wild chimpanzees in Cameroon reported progress on that front here this week at the 13th Conference on Retroviruses and Opportunistic Infections.

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.

[Kimberley J. Hockings et al, Tools to tipple: ethanol ingestion by wild chimpanzees using leaf - sponges]

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.

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.

The postdoc, Emily Wroblewski, had joined Parham's microbiology and immunology group at Stanford University in Palo Alto, California, after doing behavioral studies of wild chimpanzees at Gombe Stream National Park in Tanzania.

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.

Roddy Gabel, who oversees import / export permitting for FWS, explains that research projects that do not directly benefit wild chimpanzee could still receive permits via «enhancement,» which is akin to a carbon - offset program.

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 Cameroon.

So say researchers who have observed wild chimpanzees throw back fermented tree sap.

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.

Peters points out that a single shot vaccine could also be useful for vaccinating wild chimpanzees and gorillas which in some regions are being wiped out by the disease.

[Image Gallery: Lethal Aggression in Wild Chimpanzees]

Many more wild chimpanzees ended up as zoo exhibits or photographers» props.

FWS has classified wild chimpanzees as endangered since 1990, but has given captive chimps less protection.

To explore how female chimpanzees maneuver up and down the social ladder, Foerster, Pusey and their colleagues plumbed more than 40 years of daily records documenting the behaviors of 100 or so wild chimpanzees residing in Gombe National Park in Tanzania, where Pusey first began working alongside Jane Goodall in 1970.

Like human kids bringing back bugs from school, play among young wild chimpanzees may spread respiratory infections to their families

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.

Human researchers are killing wild chimpanzees by inadvertently giving them colds, a new study shows for the first time.

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).

«My observations from wild chimpanzees show that while unexpectedly encountering a snake or snake model may trigger a startle response, they often then investigate the snake, but do not necessarily show signs of fear,» Crockford said.

Wild chimpanzee dentition and its implications for assessing life history in immature hominin fossils.

Available reports from wild chimpanzees give further support to this hypothesis.

Rushmore observed a community of wild chimpanzees in Kibale National Park in Uganda, recording the interactions of individuals and family groups over a nine - month period to determine which individuals — and which types of individuals — were most central.

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.

For example, during the learning of tool use by wild chimpanzees, we also see young individuals paying attention to older ones much more than the reverse.

In 1990, the Fish and Wildlife Service granted endangered status for wild chimpanzees.

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

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.

The only civil war ever observed in wild chimpanzees was fueled by power, ambition, and jealousy, new research finds.

For the study, biologists followed a group of wild chimpanzees for two years, charting their social ties and periodically testing their urine for chemicals that indicate stress.

Wild chimpanzees are highly endangered, and diseases — including some that also infect humans — are among the most serious threats to their survival.

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.

The wild chimpanzees my colleagues and I had been following for nearly five hours had stopped their grunting, hooting and screeching.

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.

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.

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.

Wild chimpanzees have rarely been studied without the lure of food, which can distort their social relations.

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

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

But he stresses that in wild chimpanzees, especially since females often migrate to different communities, it will be particularly difficult to sort the genetic from the cultural.

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.

Before that 1975 revelation, few researchers had observed different communities of wild chimpanzees, and no one had even recognized that these behavioral differences existed.

But in contrast to the behaviors of wild chimpanzees, whales and elephants, among other species, the natural ways of horses have rarely garnered scientific interest.

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.

The first thing they noted is that wild chimpanzees and captive chimpanzees are similar in terms of age of molar eruption, usually occurring when the animals are slightly older than 3.