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:8/17/2017)... ... , ... A recent report indicates that circa 79 percent of 483 warning ... data integrity. The FDA outlines their expectations for quality critical instrumentation in the GMP ... the Beckman Coulter Life Sciences Virtual Trade Show Virtual Event, this webinar ...
(Date:8/16/2017)... ... ... The next Patient Care Academy at Kalamazoo Valley Community College begins September ... seven-week long Patient Care Academy are eligible to take the State of Michigan examination ... in Kalamazoo is $24,428.* , As a CNA, one is equipped for employment in ...
(Date:8/16/2017)... ... 2017 , ... Greenfield Advisors is honored to be named to Inc. Magazine’s ... in a row. The Inc. 5000 list honors private businesses across the country that ... list once is a great accomplishment, but for us to be included again goes ...
(Date:8/16/2017)... ... August 16, 2017 , ... Any Lab Test Now® ... ranked #4429 on the newly released, 36th annual Inc. 5000 , the most ... at the most successful companies within the American economy’s most dynamic segment — its ...
(Date:8/16/2017)... New York (PRWEB) , ... August 16, 2017 , ... ... could minimize its appearance with diet and exercise. In fact, cellulite can't always be ... a safer and more effective treatment available to select physicians nationwide. Dr. Kenneth Rothaus ...
Breaking Medicine News(10 mins):
(Date:8/15/2017)... announced today that its fully owned USA -operating ... City Office in Yonkers, New York to ... 2 ) homecare therapy. This new East Coast location has also ... the company,s DMEPOS accreditation for Home/Durable Medical Equipment Services. ... Advanced Oxygen Therapy Inc. New York ...
(Date:8/10/2017)... -- Physical Rehabilitation Network (PRN), acquired the long-standing outpatient rehabilitation clinic, ... . The reputable clinic will continue to be co-owned and ... staff of four clinicians. Lipkin received his doctorate in physical ... years of experience with a strong background in manual therapy. ... 10th PRN clinic in and around the Denver ...
(Date:8/7/2017)... 7, 2017 Insightin Health, provider of ... and engagement, announced the selection of Michael ... Development, effective as of February 2017. In this role, ... strategy for our clients. Wood brings with him ... and business analytics within the healthcare industry. Wood ...
Breaking Medicine Technology: