Tag: "chimpanzees" at biology news

New collaborative research reveals chimpanzees can sustain multiple-tradition cultures

...nline edition of Current Biology, confirms captive chimpanzees have the capacity to sustain the same kind of mult...ieve exist in the wild, providing further evidence chimpanzees and humans shared a common ancestor five to six million years ago who had a similar level of cultura...

Nurtured chimps rake it in

...study (1) is the first to demonstrate that raising chimpanzees in a human cultural environment enhances their cog...y chimpanzees). The experiments looked at how the chimpanzees used rakes in order to retrieve a fruit yoghurt reward. The overall study examined not only whether...

Ancient retrovirus sheds light on modern pandemic

Human resistance to a retrovirus that infected chimpanzees and other nonhuman primates 4 million years ago ironically may be at least partially responsible for the susceptibility of humans to HIV infection today. These findings, reported by a team of researchers at Fred Hutchinson Cancer Research Center in ...

Gene mutation linked to cognition is found only in humans

...on of type II in the PFC of two great ape species, chimpanzees and orangutans, and found that it was not present. Since these two species diverged most recently from human ancestors (about 5 and 14 million years ago respectively), this finding demonstrates that type II is a human-specific form that originated re...

Female-led infanticide in wild chimpanzees

Researchers observing wild chimpanzees in Uganda have discovered repeated instances of a ... that although low-level aggression between female chimpanzees is more commonly seen, the observed instances of infanticide indicate that deadly aggression is not ...

Man's best friend lends insight into human evolution

...ue of Current Directions in Psychological Science, chimpanzees utilize social cues like eye gaze and face orientation to monitor others' behavior or infer motives of other subordinate or dominant individuals, or even deceive them, when competing for food. But it turns out that chimps are not very good at drawing...

Female chimps keep the bullies at bay

Female chimpanzees may have found a fool-proof way to ensure they mat...nd Culture at Okinawa University in Japan. Female chimpanzees do not synchronize their reproductive activities which reduces the opportunities for less-desirable ...

Ebola outbreaks killing thousands of gorillas and chimpanzees

...ola virus killed tens of thousands of gorillas and chimpanzees over the last decade? Observations published in the May issue of The American Naturalist provide new clues, suggesting that outbreaks may be amplified by Ebola transmission between ape social groups. The study provides hope that newly developed vacci...

The chimpanzee stone age

Researchers have found evidence that chimpanzees from West Africa were cracking nuts with stone too...lture, thousands of years ago. The result suggests chimpanzees developed this behaviour on their own, or even that stone tool use was a trait inherited from our co...

UF scientists discover new genus of frogmouth bird in Solomon Islands

...ferent species within the same genus (Homo), while chimpanzees are our living relatives from a closely related genus (Pan), but that we share the same taxonomic family (Hominidae) with our chimp cousins. The Solomon Islands Frogmouth differs from other frogmouths in a number of significant ways. First, it is ...

Gene study shows three distinct groups of chimpanzees

...e largest study to date of genetic variation among chimpanzees has found that the traditional, geography-based so...es, the research team collected DNA from 78 common chimpanzees and six bonobos, a separate species of chimpanzee, and examined 310 DNA markers from each. They ...

Chimpanzees found to use tools to hunt mammalian prey

...nuts, but there had been only fleeting evidence of chimpanzees brandishing tools for bona fide hunting. In th...nting by the Fongoli community of savanna-dwelling chimpanzees (Pan troglodytes verus) in southeastern Senegal. Chimpanzees were observed making spear-like tools i...

E. coli bacteria migrating between humans, chimps in Ugandan park

... the first to find antibiotic-resistant strains in chimpanzees in Africa. "Antibiotic resistance has tradition... Montreal, examined two of 10 known communities of chimpanzees living in Kibale National Park, Uganda. One of the two chimp groups has been the focus of two decade...

Ape gestures offer clues to the evolution of human communication

...h Center, Emory University, have found bonobos and chimpanzees use manual gestures of their hands, feet and limbs...o groups of bonobos (13 animals) and two groups of chimpanzees (34 animals), Yerkes researchers Amy Pollick, PhD, and Frans de Waal, PhD, distinguished 31 manual g...

Road-crossing in chimpanzees: A risky business

...f primate cooperation, researchers have found that chimpanzees evaluate risk when crossing roads and draw on an e...tuation that calls for flexibility of responses by chimpanzees to variations in perceived risk. Understanding how chimpanzees cross roads as a group would help sha...

Wild gorillas carriers of a SIV virus close to the AIDS virus

...oes not, however, call into question the fact that chimpanzees are the primary reservoir of SIV/HIV viruses that ...oup O is less apparent. It cannot be excluded that chimpanzees infected by HIV-1 group O might have contaminated humans and the gorilla independently, or that the ...

Unraveling where chimp and human brains diverge

Six million years ago, chimpanzees and humans diverged from a common ancestor and evolved into unique species. Now UCLA scientists have identified a new way to pinpoint the genes that separate us from our closest living relative ?and make us uniquely human. The Proceedings of the Na...

Male chimpanzees prefer mating with old females

...e mating preferences have found that although male chimpanzees prefer some females over others, they prefer older...r this difference may lie in the fact that whereas chimpanzees participate in a relatively promiscuous mating system, humans form unusually long-term mating bonds,...

Complexity constrains evolution of human brain genes

...re. To assess the speed with which both humans and chimpanzees accumulated many small differences in gene sequenc...olution. So, on average, the genes from humans and chimpanzees changed faster than genes from monkeys, which changed faster than those from mice. They explai...

Predators prefer to hunt small-brained prey

...viduals avoid or escape danger ?the larger-brained chimpanzees rarely feature in the diets of predators." "Some animals' ability to avoid being eaten by predators may be a contributing factor to the evolution of large brains across some species, adding to conventional theories which argue this is important fo...

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