12/8/2023 0 Comments Chimpanzee face side view![]() ![]() Pan same-sex sexual behaviours include mounting, genital touching, and rump-rump touching (de Waal, 1988 Goodall, 1989). Nevertheless, as has been suggested for same-sex mounting among female Japanese macaques (Vasey, 2006), same-sex sexual behaviours do not always appear to convey an adaptive benefit.Īlthough same-sex sexual behaviour is habitual and particularly pronounced among bonobos (de Waal, 1990), chimpanzees ( Pan troglodytes) are also know to engage in same-sex sexual behaviour across multiple contexts (Savage-Rumbaugh & Wilkerson, 1978). Among our close relatives, the nonhuman primates, proposed functions include promoting cooperation and coalitionary support as well as preventing and reducing social tension, such as through post-conflict reconciliation (Vasey, 1996 Paoli et al., 2007 Clay & de Waal, 2013 Moscovice et al., 2019). A varied and widespread behaviour in the natural world, homosexual or same-sex sexual behaviour may have diverse as well as species-specific functions (Hanby, 1976 Moscovice et al., 2019), and, in some cases, represent idiosyncratic innovations for behaviourally flexible animals. Same-sex sexual interactions, i.e., genital contacts, mounting or other sexual solicitations between same-sex partners have been documented in many animal taxa including mammals, birds, marine life, and insects (Sommer & Vasey, 2006 Bailey & Zuk, 2009). ![]()
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