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Referential-gesture communication in wild chimpanzees (Pan troglodytes)
March 21, 2006Humans commonly use referential gestures that direct the attention of recipients to particular aspects of the environment. Because the recipient of a referential gesture must infer the signaler's meaning, the use of these gestures has been linked with cognitive capacities such as the ability to recognize another individual's mental state. Researchers have now found evidence that such referential gesturing is a natural part of chimpanzee behavior. The observations, which shed light on the communicative abilities of wild apes, are reported in the March 21st issue of Current Biology by Dr. Simone Pika of the University of St. Andrews, Scotland, and Dr. John Mitani of the University of Michigan.
Among the non-human primates-our closest living relatives-referential gestures have been reported only in captive chimpanzees interacting with their human experimenters and in human-raised or language-trained apes. In the new work, the researchers provide evidence for the widespread use of a referential gesture by chimpanzees (Pan troglodytes) in the wild. The animals were observed in the Ngogo community of chimps in Kibale National Park, Uganda.
The gesture studied by the researchers-a "directed scratch"-involved one chimpanzee making a relatively loud and exaggerated scratching movement on a part of his body that could be seen by his grooming partner. In the majority of cases, the indicated spot was groomed immediately afterward by the recipient of the gesture. The scratch gesture occurred between pairs of adult males and was used more often in pairs consisting of high-ranking males. On the basis of their observations, the researchers suggest that the "directed scratch" gesture may be used communicatively to indicate a precise spot on the body and to depict a desired future action, namely grooming. The findings also suggest that the recipient of the signal has an understanding of the intended meaning of the gesture. "Directed scratches" therefore qualify as referential and iconic, in the technical sense, and might provide support for the hypothesis that some form of mental-state attribution may be present in our closest living relatives.
Cell Press
Cell Press
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Wild female chimpanzees copulate more frequently with males who share meat with them over long periods of time, according to a study led by researchers from the Max Planck Institute for Evolutionary Anthropology in Germany.
In a last 'stronghold' for endangered chimpanzees, survey finds drastic decline
In a population survey of West African chimpanzees living in Côte d'Ivoire, researchers estimate that this endangered subspecies has dropped in numbers by a whopping 90 percent since the last survey was conducted 18 years ago.
Study shows wild male chimpanzees use stolen food to win over the opposite sex
They say that the way to a man's heart is through his stomach and the same could be said for female chimpanzees. Researchers studying wild chimps in West Africa have discovered that males pinch desirable fruits from local farms and orchards as a means of attracting female mates.
Chimpanzees are social conformists
Research being published by Nature suggests that humans are not alone in wanting to conform and be like their neighbours but that chimpanzees also have an innate desire to be like everyone else.
Ebola virus: from wildlife to dogs
Ebola virus infection in humans provokes a violent haemorrhagic fever. It usually flares up as intense epidemics. These kill 80 % of the people infected. Seven such outbreaks have hit Gabon and the Republic of Congo since 1994, leading to 445 cases resulting in 361 deaths. Ebola virus thus constitutes a grave public health problem in these countries. No medicine or vaccine is currently available, only prevention and rapid control of epidemics by isolation of disease victims can limit its spreading.
Discovery of the origin of the Simian Immunodeficiency Virus (SIV) in the chimpanzee
The origin of HIV-1 (human immunodeficiency virus-1), responsible for the global Aids pandemic, has been a live issue in the scientific community for many years. It is now recognized that HIV-1 in the human population results from cross-species transmission of SIVcpz, from chimpanzees (Pan troglodytes troglodytes) to humans, most likely through hunting and handling of infected primate bushmeat. However, the occurrence and ancestry of this virus in the chimpanzee itself still raises many questions. Sivs are a large family of viruses, carried by many species of monkeys in africa, but chimpanzees are the only apes known to be naturally infected. Furthermore, the prevalence of SIV infection in w
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Jane Goodall's Wild Chimpanzees (Large Format) Starring: Jane Goodall, Marc Strange Directed By: David Lickley Also With: James Neihouse (Cinematographer), Reed Smoot (Cinematographer), David Lickley (Producer), James Lahti (Editor), James Lahti (Producer), Becky Kirkpatrick (Producer), Carolyn Thain (Producer), Freda Nicholson (Producer), Jim Marchbank (Producer), Kathryn Liptrott (Producer), Michael Boeckmann (Producer), Mike Day (Producer), Stephen Low (Writer) Did you know that chimpanzees and humans have 98 percent of their DNA in common? You will after watching this absorbing 75-minute (including extras) documentary, featuring and partially narrated by renowned researcher Jane Goodall, who's been on the chimps' case for more than four decades. We see these African apes on the ground and in trees, playing, grooming, teaching, even killing one another. The scenes of them "fishing" for termites and ants using a stick for a pole make for extraordinary viewing; indeed, the film's principal message is that they and we are very much alike. And while the small screen can't capture the full majesty of what began as an IMAX film, one can sense the almost palpable three-dimensionality of the original. The DVD is also loaded with bonus... |
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My Friends-the Wild Chimpanzees by Baroness Jane van Lawick-Goodall (Author), Jane Goodall (Author), Baron Hugo van Lawick (Photographer), Leonard Carmichael (Photographer) Scientific study of chimpanzees in the wild in 1960. | |
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Jane Goodall's Wild Chimpanzees (Large Format) [VHS] Starring: Jane Goodall, Marc Strange Directed By: David Lickley Did you know that chimpanzees and humans have 98 percent of their DNA in common? You will after watching this absorbing 75-minute (including extras) documentary, featuring and partially narrated by renowned researcher Jane Goodall, who's been on the chimps' case for more than four decades. We see these African apes on the ground and in trees, playing, grooming, teaching, even killing one another. The scenes of them "fishing" for termites and ants using a stick for a pole make for extraordinary viewing; indeed, the film's principal message is that they and we are very much alike. And while the small screen can't capture the full majesty of what began as an IMAX film, one can sense the almost palpable three-dimensionality of the original. The DVD is also loaded with bonus... |
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Wild Republic Hanging Chimp 20 Inches by Wild Republic Were busy adding products and product descriptions. A description hasnt been added to this product yet, but its coming very soon. If you have any questions, please visit our Help section. You may also click here to contact us or click the chat live banner in the left column of this page. Our products are made by top manufacturers who care about toy safety, quality and value. Your order will ship factory fresh directly from our warehouse to your door. We carefully inspect and beautifully package every order before shipment to ensure that you receive high quality products that are delivered accurately every time you order. We want you to be completely satisfied with your order. We stand behind every product we sell with a full money back guarantee. If youre not completely satisfied... |
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Walls of the Wild Chimpanzee by Walls of the Wild Walls of the Wild wildlife décor products are intricately cut-out so they appear to be painted on your wall. Combine our items to create an incredible mural. All items are printed on self-adhesive, peel and stick waterproof vinyl. The stickers are designed for indoor or outdoor use on any clean, dry surface. To apply, simply remove the backing and stick it on! Can be used in the shower, bedroom even on your car. Product includes simple application instructions. Clean with mild soap and water. |
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Among the Wild Chimpanzees Also With: National Geographic (Producer) |
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Long Sleeve T-shirt with wild, primate, eating, chimpanzee, animal, banana Large White by Shop Zeus |
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Natural History 1893-94 Head Chimpanzee Wild Animal by old-print NATURAL HISTORY 1893-94 HEAD CHIMPANZEE WILD ANIMAL A page from The Royal Natural History volume 1 edited by Richard Lydekker. Contents include mammals, apes, monkeys , lemurs, baboons, bats, the insectivores, the carnivores, cat tribe, the dog tribes, civets, aard-wolf and hyenas. Plates and engravings by W.Kuhnert, F Specht, P J Smit, G Mutel, Gambier, Bolton, and many others.Dates 1893-1894. Size of each plate is 10 x 7 inches (260 x 170) all are genuine prints and not modern copies. |
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Onesie with wild, chimpanzee, desert, animal, monkey by SHOPZEUS |
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Jane Goodall's Wild Chimpanzees by Johnny Clegg, Bruce Cockburn, Paul McCartney, Bonnie Raitt Amin Bhatia (Composer) This exciting new CD includes the soundtrack from the award-winning IMAX film "Jane Goodall's Wild Chimpanzees" featuring songs by South Africa's Johnny Clegg with a luscious score by Amin Bhatia. Bruce Cockburn, Paul McCartney, Bonnie Raitt and Samite contribute their own selections to this celebration of the film, the wildlife of Africa and the work of Jane Goodall. Every CD sold generates a contribution to support the work of the Jane Goodall Institute. |
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