Wild chimps who regularly gave away food were twice as successful with females as their rivals, researchers found. Previous studies have shown that males chimps often share their meat with females who do not go out to hunt. Although researchers had long speculated that this generosity was used to increase their chances of mating, there was little evidence that this was the case. Infant chimps 'better behaved' than human counterparts. Cristina Gomes, one of the lead researchers, from the Max Planck Institute for Evolutionary Anthropology in Germany, said: "Our results strongly suggest that wild chimpanzees exchange meat for sex, and do so on a long-term basis. Christophe Boesch, a co-author of the study, published in the journal PLoS ONE , said: "Our findings add to the ever-growing evidence suggesting that chimpanzees can think in the past and the future and that this influences their present behaviour.
Female chimps keep sex life quiet › News in Science (ABC Science)
A savory meat dinner goes a long way, as in all the way, in the chimp world, according to a new study that found wild male chimpanzees exchange meat for sex with females on a long-term basis. It's also suspected the same holds true for hunter-gatherer humans, since earlier studies show better hunters tend to have more sexual partners. Females of both primate species benefit by receiving better nutrition, especially during depleting fertile periods, so they may be driving the relationship between reproductive success and good male hunting skills. Female chimps that are unsuccessful in the attempt, or less bold in general, may resort to just sitting next to the male and whimpering, "occasionally touching the carcass or extending their cupped hand towards the male. The chimp group — consisting of 49 individuals total — included five adult males and 14 adult females, which were the focus of the study published in the latest PLoS One. The researchers recorded male to female meat transfers, with the meat mostly coming from red colobus monkeys.
These apes supposedly have inordinate amounts of sex and never fight. Can this appealing story really be true? Reputation: Bonobos are miniature, sharing, caring chimps, living in hippie communes with no aggression and lots of sex. Reality: Not really. Bonobos are roughly the same size as chimps, can be aggressive and use sex in very specific contexts.
By Colin Barras. Humans, meanwhile, show a variety of mating behaviours but often form monogamous couples. Michael Jensen-Seaman and Scott Hergenrother at Duquesne University in Pennsylvania think that it is the chimps — not humans — that have experimented with new sexual behaviours since our lineages diverged. But did male chimps inherit their mating plugs from the last common ancestor they shared with us or did they evolve it later? They found that the enzyme is four times as abundant in human semen as it is in chimp semen.