Navigation Links
Meat for sex in wild chimpanzees
Date:4/8/2009

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
gomes@eva.mpg.de
Max-Planck-Gesellschaft
Source:Eurekalert  

Related medicine news :

1. Virginia Tech researchers find human virus in chimpanzees
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Meat for sex in wild chimpanzees
(Date:3/24/2017)... ... , ... Texas Physical Therapy Specialists (TexPTS) is pleased to announce the ... clinic is the group’s 7th location in San Antonio and 23rd in Texas. ... care from the clinic, which opened March 22, 2017. , The team ...
(Date:3/24/2017)... (PRWEB) , ... March 24, 2017 , ... ... financial planning, and related services to families and business owners across eastern Michigan, ... at feeding regional families struggling with financial difficulties. , The Oxford/Orion FISH Food ...
(Date:3/24/2017)... Diego, Calif. (PRWEB) , ... March 24, 2017 ... ... has raised over $100,000 for its innovative EcoQube Frame vertical micro-veggies garden on ... the instant demand for the product – with nearly 2,000 consumers (and counting) ...
(Date:3/24/2017)... (PRWEB) , ... March 24, 2017 , ... ... Assili, announce that they are now offering treatments for sleep apnea and TMJ ... dental offices. Sleep apnea , specifically the obstructive type, is increasingly being ...
(Date:3/24/2017)... ... March 24, 2017 , ... The law firm of ... N.Y., is pleased to announce Westchester resident Lauren C. Enea has joined the firm ... the firm, will concentrate her practice in elder law, Medicaid planning and applications, and ...
Breaking Medicine News(10 mins):
(Date:3/24/2017)... 2017 Today Stock-Callers.com have issued research ... Neovasc Inc. (NASDAQ: NVCN), Hologic Inc. (NASDAQ: HOLX), Edwards Lifesciences ... SSH ). These companies are part of the Healthcare sector, ... March 23 rd , 2017, with the NYSE Health Care ... care companies in the S&P 500 were down about 0.4% ...
(Date:3/24/2017)... INDIANAPOLIS , March 24, 2017  Eli ... today announced plans to invest $850 million in ... span facilities across its U.S. enterprise, including research ... The investments are being driven by demand for ... of potential medicines in development targeting cancer, pain, ...
(Date:3/24/2017)... March 23, 2017  Provectus Biopharmaceuticals, Inc. (OTCQB: ... a clinical-stage oncology and dermatology biopharmaceutical company, today ... Commitment Term Sheet (the "Definitive Financing") it entered ... the Company,s stockholders, who are referred to in ... Form 8-K filed with the Securities and Exchange ...
Breaking Medicine Technology: