Les Espèces - Bonobo

- Apes are 'nicer' cousins of chimps - and very similar
- Bonobo apes evolved to be gentler and more playful
- Peaceful environment led bonobo females to favour sociable mates
- 'Self-domestication' could be common, say anthropologists

26/01/2012
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A new hypothesis holds that the natural selection produced the chimpanzee's nicer cousin in much the same way that humans bred dogs from wolves.

25/01/2012
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Mate competition by males over females is common in many animal species. During mating season male testosterone levels rise, resulting in an increase in aggressive behavior and masculine features. Male bonobos, however, invest much more into friendly relationships with females. Elevated testosterone and aggression levels would collide with this increased tendency towards forming pair-relationships.

23/01/2012
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Eagerly he collects wood from the ground, snaps the branches into small pieces and carefully balances them in a pile. Then, taking care not to burn himself, he gently strikes a match and gets ready for a fry-up.

Like all red-blooded males, Kanzi loves messing around with a barbecue. But then, as these extraordinary pictures show, Kanzi is no man. He is a bonobo - pygmy chimpanzee - and his love of fire is challenging the way that we think about our closest relatives in the animal kingdom.

For although bonobo apes and larger chimpanzees use twigs and leaves as tools, none has ever shown such skill for cooking food.

30/12/2011
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Copulation calls in primates are usually identified as sexually selected signals that promote the reproductive success of the caller. In this study, we investigated the acoustic structure of copulation calls in bonobos (Pan paniscus), a great ape known for its heightened socio-sexuality. Throughout their cycles, females engage in sexual relations with both males and other females and produce copulation calls with both partners. We found that calls produced during sexual interactions with male and female partners could not be reliably distinguished in terms of their acoustic structure, despite major differences in mating behaviour and social context. Call structure was equally unaffected by the size of a female's sexual swelling and by the rank of her mating partner. Rank of the partner did affect call delivery although only with male, but not female partners. The only strong effect on call structure was because of caller identity, suggesting that these signals primarily function to broadcast individual identity during sexual interactions. This primarily social use of an evolved reproductive signal is consistent with a broader trend seen in this species, namely a transition of sexual behaviour to social functions.

24/10/2011
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Bonobos communicate where to find their favourite food using barks and peeps, scientists have found.

11/05/2011
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