The cooperative sex: Sexual interactions among female bonobos are linked to increases in oxytocin, proximity and coalitions

Citation:

Liza R Moscovice*, Martin Surbeck*, Barbara Fruth, Gottfried Hohmann, Adrian V Jaeggi, and Tobias Deschner. 11/1/2019. “The cooperative sex: Sexual interactions among female bonobos are linked to increases in oxytocin, proximity and coalitions.” Hormones and Behavior, 116, Pp. 104581. Publisher's Version

Abstract:

In some species habitual same-sex sexual behavior co-occurs with high levels of intra-sexual alliance formation, suggesting that these behaviors may be linked. We tested for such a link by comparing behavioral and physiological outcomes of sex with unrelated same- and opposite-sex partners in female bonobos (Pan paniscus). We analyzed behavioral outcomes following 971 sexual events involving n = 19 female and n = 8 male adult and sub-adult members of a wild, habituated bonobo community. We additionally collected n = 143 urine samples before and after sexual interactions to non-invasively measure oxytocin (OT), which modulates female sexual behavior and facilitates cooperation in other species. The majority of sexual events (65%) consisted of female same-sex genito-genital rubbing (or GG-rubbing). Female dyads engaged in significantly more sexual interactions than did inter-sexual dyads …
Last updated on 09/01/2020