Consequences of lethal intragroup aggression and alpha male replacement on intergroup relations and home range use in tufted capuchin monkeys (Cebus apella nigritus)

American Journal of Primatology
Clara J Scarry, M Paula Tujague

Abstract

In conflicts between primate groups, the resource-holding potential (RHP) of competitors is frequently related to group size or male group size, which can remain relatively constant for long periods of time, promoting stable intergroup dominance relationships. Demographic changes in neighboring groups, however, could introduce uncertainty into existing relationships. Among tufted capuchin monkeys (Cebus apella nigritus), dominant male replacement is a relatively infrequent demographic event that can have a profound effect on both the composition and size of the social group. Here, we report such a case and the consequences for home range use and intergroup aggression. Between June 2008 and August 2010, we periodically followed two neighboring groups (Macuco and Rita) in Iguazú National Park, recording daily paths (N = 143) and encounters between the groups (N = 28). We describe the events leading to a change in the male dominance hierarchy in the larger group (Macuco), which resulted in the death or dispersal of all adult males, followed by the succession of a young adult male to the dominant position. This takeover event reduced the numerical advantage in number of males between the two groups, although the ratio of total grou...Continue Reading

References

Sep 1, 1974·Journal of Theoretical Biology·G A Parker
Nov 12, 2005·Primates; Journal of Primatology·John C Mitani
Jan 11, 2008·Proceedings of the National Academy of Sciences of the United States of America·Margaret C CrofootRoland W Kays
Feb 1, 2008·American Journal of Primatology·P Ramírez-LlorensC H Janson
Jul 14, 2010·Current Biology : CB·John C MitaniSylvia J Amsler
Sep 17, 2010·Animal Cognition·Roberto BonanniPaola Valsecchi

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Citations

Apr 10, 2013·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Andreas KoenigCarola Borries
Oct 28, 2015·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Sarie Van Belle, Clara J Scarry
Jun 1, 2018·Proceedings. Biological Sciences·Kelly Rooker, Sergey Gavrilets
Jan 22, 2020·American Journal of Primatology·Clara J Scarry
May 26, 2017·American Journal of Primatology·Julie A Teichroeb, Katharine M Jack

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