Consequences of a male takeover on mating skew in wild Sanje mangabeys

American Journal of Primatology
David Fernández

Abstract

Among primate species living in multimale-multifemale groups, the number of receptive females may determine the rank of the lowest male that copulates (priority of access model, or PoA [Altmann SA. 1962. A field study of the sociobiology of rhesus monkeys, Macaca mulatta. Annals of the New York Academy of Sciences 102:338-435]). Factors, such as temporary instability in the hierarchy and female behavior can, however, affect high-ranking males' ability to monopolize females, reducing mating skew and causing the hierarchy to depart from predictions of PoA. Here, I use behavioral data collected over a 22-month period on a wild group of Sanje mangabeys (Cercocebus sanjei) to examine the effect of a takeover by two immigrating males who became α and β in the hierarchy, and of female behavior on male mating skew. Data on male agonistic interactions were collected on nine males using ad libitum observations, while information on male mating success (i.e., daily proportion of ejaculatory copulations with the focal female) was collected through focal follows of 12 sexually receptive females. Before the takeover, the hierarchy was stable and highly skewed, with the α-male monopolizing up to 75% of copulations. At this time, however, mati...Continue Reading

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Citations

Jul 7, 2017·International Journal of Primatology·David FernándezCarolyn L Ehardt
May 26, 2017·American Journal of Primatology·Julie A Teichroeb, Katharine M Jack

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