Navigation Links
Meat for sex in wild chimpanzees

This release is available in German.

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, published in the open-access, peer-reviewed journal PLoS ONE April 8, 2009.

How females choose their mating partners and why males hunt and share meat with them are questions that have long puzzled scientists. Evidence from studies on human hunter-gatherer societies suggest that men who are more successful hunters have more wives and a larger number of offspring. Studies of wild chimpanzees, humans' closest living relative, have shown that male hunters frequently share meat with females who did not participate in the hunt. One of the hypotheses proposed to explain these findings is the meat-for-sex hypothesis, whereby males and females exchange meat for mating access. However, there has been little evidence in both humans and chimpanzees to support it.

In recent research conducted in the Ta National Park, Cte d'Ivoire, Cristina M. Gomes and Christophe Boesch show that female chimpanzees copulate more frequently with males who share meat with them on at least one occasion, compared with males who never share meat with them, indicating that sharing meat with females improves a males' mating success. Although males were more likely to share meat with females who had sexual swelling (i.e. estrous females), excluding all sharing episodes with estrous females from the analysis, did not alter the results. This indicates that short term exchanges alone (i.e. within the estrous phase of the female) cannot account for the relationship between sharing meat and mating success.

According to Gomes, "Our results strongly suggest that wild chimpanzees exchange meat for sex, doing so on a long-term basis. Males who shared meat with females doubled their mating success, whereas females, who had difficulty obtaining meat on their own, increased their caloric intake, without suffering the energetic costs and potential risk of injury related to hunting."

She adds, "Previous studies might not have found a relationship between mating success and meat sharing because they focused on short-term exchanges; or perhaps because in those groups access to females was driven by male coercion so females rarely chose their mating partners."

Boesch concluded, "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."

"These findings are bound to have an impact on our current knowledge about relationships between men and women; and similar studies will determine if the direct nutritional benefits that women receive from hunters in human hunter-gatherer societies could also be driving the relationship between reproductive success and good hunting skills," concludes Gomes.


Contact: Cristina M. Gomes

Related medicine news :

1. Virginia Tech researchers find human virus in chimpanzees
Post Your Comments:
Related Image:
Meat for sex in wild chimpanzees
(Date:11/27/2015)... ... November 27, 2015 , ... According to an article ... the way that they are handling security in light of the recent terrorist attacks ... in an attempt to stop an attack from reaching U.S. soil. Especially around special ...
(Date:11/27/2015)... ... 27, 2015 , ... Lizzie’s Lice Pickers just announced a special promotion that ... of their purchase of lice treatment product. In addition, customers will receive a complimentary ... spokesperson. “Finding lice is a sure way to ruin the holidays, so we encourage ...
(Date:11/27/2015)... ... November 27, 2015 , ... Intellitec Solutions ... SL User Group (MSDSLUG). Recognized as Microsoft’s official group for end users of ... SL software users, partners, industry experts and representatives. Intellitec Solutions’ membership status demonstrates ...
(Date:11/27/2015)... ... November 27, 2015 , ... ... successful and prominent nonprofit healthcare organizations in the country. They have overseen financial ... organizations, and helped advance the healthcare industry as a whole through their advocacy ...
(Date:11/26/2015)... ... , ... Inevitably when people think Thanksgiving, they also think Holiday sales and ... Friday and Cyber Monday massage chair sales to receive the best pricing ... to find the best massage chair deals, they can see all of the coupons ...
Breaking Medicine News(10 mins):
(Date:11/26/2015)... , Países Bajos, November 26, 2015 ... la terapia fotodinámica de Bremachlorin para el cáncer avanzado. ... la inmunoterapia con la terapia fotodinámica de Bremachlorin para ... Un nuevo enfoque combina la inmunoterapia con la terapia ... Clinical Cancer Research . --> ...
(Date:11/26/2015)... and Markets ( ) has announced the addition of ... - Rise in Cardiac Disorders and Growing Awareness among People ... Boston scientific and others. ... others. --> The market is dominated by ... scientific and others. Asia ...
(Date:11/26/2015)... DUBLIN , November 26, 2015 /PRNewswire/ ... the addition of the "2016 Future ... Drugs of Abuse Testing Market: Supplier Shares, ... report to their offering. --> ... of the "2016 Future Horizons and ...
Breaking Medicine Technology: