Sex gorillas

Female gorillas have been documented engaging in lesbian sex for the first time. The behaviour was observed by scientists during a research trip to the Rwandan section of the Virunga mountain range in central Africa. The wild mountain gorillas, observed by a team led by Dr Cyril Grueter of the University of Western Australia, are believed to gain pleasure from having sex and may do it when they have been rejected by males. While many species of male primates are well known to engage in homosexual behaviour, females have been subject to far less attention. Female gorillas have also been observed having lesbian sex in Uganda, but the data has not been published or subject to scrutiny. But the team were surprised to observe 44 instances of same-sex contact between female gorillas during their field study.
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21.12.2019
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Sexual initiation in wild mountain gorillas

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The strategic use of sex in wild female western gorillas. - Abstract - Europe PMC

Either your web browser doesn't support Javascript or it is currently turned off. In the latter case, please turn on Javascript support in your web browser and reload this page. Read article at publisher's site DOI : Czekala N , Sicotte P. Danielsson I. Evol Anthropol , 27 5 , 01 Sep
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The strategic use of sex in wild female western gorillas.

A field study of wild mountain gorillas was conducted to elucidate details of sexual initiation required for an interpretation of the increased frequency of copulation during the menstrual cycle, in comparison to the wild, that occurs when this species is tested in traditional laboratory pair tests. Although females in the wild played a clear role in establishing and maintaining proximity to the male and assertively presenting for copulation, all female presenting was preceded by some form of behavior by the male. Although originally described as male aggression in the laboratory tests, such behavior now appears to be male sexual initiative, elicited by female proximity. The exaggerated form and frequency of the display in the laboratory, and the increased copulation during the cycle that ensued, are likely due to 1 placing females in proximity to a male daily, rather than on 2—3 days of estrus as occurs in the wild, and 2 the inability of the female in the laboratory to withdraw from male proximity during pair tests in a single cage. In addition to clarifying the data on laboratory pair tests, the data on wild gorillas have relevance to the captive breeding of gorillas.
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By Ewen Callaway. Female gorillas use sex as a tactic to thwart their rivals, new research suggests. Pregnant apes court their silverback male to stop other females conceiving.
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