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    Mecca V.I.P. Big VIC's Avatar
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    May 2007

    Chimpanzees exchange meat for sex

    By Victoria Gill
    Science reporter, BBC News
    Chimpanzees exchange meat for sex
    Share and share alike: a male chimp will give up his hard-earned catch for sex

    Chimpanzees enter into "deals" whereby they exchange meat for sex, according to researchers.

    Male chimps that are willing to share the proceeds of their hunting expeditions mate twice as often as their more selfish counterparts.

    This is a long-term exchange, so males continue to share their catch with females when they are not fertile, copulating with them when they are.

    The team describe their findings in the journal PLoS One.
    Chimpanzees exchange meat for sex
    Cristina Gomes and her colleagues, from the Max Planck Institute for Evolutionary Anthropology in Germany, studied chimps in the Tai Forest reserve in Ivory Coast.

    She and her team observed the animals as they hunted, and monitored the number of times they copulated.

    "By sharing, the males increase the number of times they mate, and the females increase their intake of calories," said Dr Gomes.

    "What's amazing is that if a male shares with a particular female, he doubles the number of times he copulates with her, which is likely to increase the probability of fertilising that female."

    High value

    Meat is important for the animals' diet because it is so high in protein. Since female chimps do not usually hunt, "they have a hard time getting it on their own," explained Dr Gomes.

    The "meat for sex hypothesis" had already been proposed to explain why male chimps might share with females.

    But previous attempts to record the phenomenon failed, because researchers looked for direct exchanges, where a male shared meat with a fertile female and copulated with her right away.

    Dr Gomes' team took a new approach. In a previous study, she had found that grooming exchange - where the animals take it in turns to groom each other - happens over long periods, she related. "So we thought, why not meat and sex?

    "We looked at chimps when they were not in oestrus, this means they don't have sexual swellings and aren't copulating."

    "The males still share with them - they might share meat with a female one day, and only copulate with her a day or two later."

    Dr Gomes thinks that her findings could even provide clues about human evolution.

    She suggests this study could lay the foundations for human studies exploring the link between "good hunting skills and reproductive success".

    "This has got me really interested in humans," she said. "I'm thinking of moving on to working with hunter-gatherers."

    Michael Gurven from the University of California in Santa Barbara studies human behaviour in communities of hunter-gatherers in South America.

    He told BBC News that the direct link between success in hunting and reproduction highlighted by this study could "help in our thinking about humans".

    Professor Gurven, who was not involved in this study, added that the nature of this exchange of meat for sex is "kind of like pair bonding in humans, because it's long-term.

    "This highlights something we haven't seen in chimps before."
    Chimpanzees exchange meat for sex

    ''If you wanna run with the big dogs you cant piss on the porch with the pups.''

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  2. Back To Top    #2
    Mecca V.I.P. Zigurd's Avatar
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    Sep 2007

  3. Back To Top    #3
    Quote Originally Posted by Zigurd View Post

    Chimpanzees exchange meat for sex

    Quote Originally Posted by drunk tweak

    i nedds ed one!! ahadsfa

  4. Back To Top    #4
    Robcardu did what? :D



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