Social behavior and patterns of testosterone and glucocorticoid levels differ between male chacma and Guinea baboons

Hormones and Behavior
Urs KalbitzerJulia Fischer

Abstract

In multi-male, multi-female groups of mammals, males usually compete aggressively over access to females. However, species vary in the intensity of male contest competition, which has been linked to differences in testosterone and glucocorticoid profiles. Chacma (Papio ursinus) and Guinea (P. papio) baboons constitute an intriguing model to examine variation in male competition and male endocrine correlates, because of the differences in their social systems. Chacma baboons live in stable female-bonded groups with linear male dominance hierarchies and a high male mating skew, whereas Guinea baboons live in male-bonded, multi-level societies. We recorded male behavior and assayed testosterone (fT) and glucocorticoid metabolite (fGC) levels from fecal samples in one population of each species. Male chacma baboons were more frequently involved in agonistic interactions, and dominance relationships were more consistent than in Guinea baboons, where we could not detect linear hierarchies. Notably, male chacma baboons were also more aggressive towards females, indicating an overall higher aggressiveness in this species. In contrast, male Guinea baboons showed higher levels of affiliative interactions and spatial tolerance. High-ranki...Continue Reading

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Citations

Sep 13, 2016·Hormones and Behavior·Martin N Muller
Oct 25, 2016·Primates; Journal of Primatology·Taufiq Purna NugrahaTony Weingrill
Jan 21, 2017·American Journal of Physical Anthropology·Julia FischerDietmar Zinner
Aug 24, 2017·American Journal of Primatology·Alan V RinconAnn MacLarnon
Aug 16, 2018·Royal Society Open Science·Alexander MielkeCatherine Crockford
Jul 1, 2020·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Federica Dal Pesco, Julia Fischer
May 26, 2017·American Journal of Primatology·Julie A Teichroeb, Katharine M Jack
Jan 12, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Cécile GarciaSandrine Prat
Jun 11, 2021·Primate Biology·Dietmar ZinnerJulia Fischer

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