Balancing contest competition, scramble competition, and social tolerance at feeding sites in wild common marmosets (Callithrix jacchus)

American Journal of Primatology
María Fernanda Castellón De la FuenteP A Garber

Abstract

Models of primate sociality focus on the costs and benefits of group living and how factors such as rank, feeding competition, alliance formation, and cooperative behavior shape within-group social relationships. We conducted a series of controlled field experiments designed to investigate how resource distribution (one or three of four reward platforms) and amount of food on a reward platform affected foraging strategies and individual feeding success in four groups of wild common marmosets (Callithrix jacchus) living in the Caatinga of northeastern Brazil. At our field site, common marmoset groups are characterized by a single breeding female who can produce twin litters twice per year, strong social cohesion, and cooperative infant care provided principally by several adult male helpers. We found that except for the dominant breeding female, rank (based on aggression) was not a strong predictor of feeding success. Although the breeding female in each group occupied the highest rank position and obtained the greatest daily feeding success, all other group members, including adults and juveniles experienced relatively equal feeding success across most experimental conditions. This was accomplished using a balance of behavioral...Continue Reading

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Citations

Feb 28, 2019·American Journal of Primatology·Filipa AbreuNicola Schiel
Jan 14, 2021·Scientific Reports·Francisco Edvaldo de Oliveira TerceiroJudith Maria Burkart
Feb 5, 2021·Science Advances·R K BrüggerJ M Burkart
Apr 30, 2021·Journal of Medical Primatology·Anna GoodroeSuzette Tardif
Oct 17, 2021·The Journal of Animal Ecology·María Fernanda De la FuenteNicola Schiel

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