Urinary oxytocin levels in relation to post-conflict affiliations in wild male chimpanzees (Pan troglodytes verus)

Hormones and Behavior
Anna PreisR M Wittig

Abstract

Many animals living in social groups have evolved behaviors to resolve conflicts between group members, behaviors thought crucial for maintaining stable group life. Several hypotheses, based mainly on observational data, aim to explain how post-conflict (PC) affiliations, such as reconciliation and consolation, resolve conflicts by restoring relationships and/or alleviating anxiety. To examine a potential endocrinological mechanism of PC affiliations, we used an experimental-like procedure to investigate whether the oxytocinergic system is activated during naturally observed reconciliations, receiving bystander PC affiliations and aggressions not followed by PC affiliations in wild male chimpanzees. We compared urinary oxytocin (uOT) levels after reconciliations, receiving bystander PC affiliations or aggressions without affiliations with two control conditions: affiliations without previous aggression and after time periods without social interactions. We furthermore tested the 'valuable relationship' hypothesis of reconciliation, as well as the influence of relationship quality between individuals engaged in each of the three behavioral conditions involving aggression on uOT levels. We found that the probability to reconcile ...Continue Reading

Citations

Feb 21, 2019·Journal of Neuroendocrinology·Tatsushi Onaka, Yuki Takayanagi
May 13, 2020·World Psychiatry : Official Journal of the World Psychiatric Association (WPA)·Ruth Feldman
Apr 1, 2020·Behavioral Ecology and Sociobiology·Alexander MielkeRoman M Wittig
Apr 25, 2020·Animals : an Open Access Journal From MDPI·Asahi OgiAngelo Gazzano
May 4, 2020·Neuroscience and Biobehavioral Reviews·Serenella TolomeoRichard P Ebstein
Jan 4, 2021·Psychoneuroendocrinology·James BrooksShinya Yamamoto
Jan 13, 2021·Annual Review of Clinical Psychology·Ruth Feldman

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