Body Mass Gain in Wild Brown Capuchins ( Sapajus apella ) in Relation to Fruit Production and Social Dominance

Bibliographic Data

ID19387263
AuthorsNelson F Galvis (0000-0002-2261-2329, Laboratorio de Ecología de Bosques Tropicales y Primatología—Departamento de Ciencias Biológicas Universidad de los Andes Bogotá Colombia, corresponding author), Daniela C Rodríguez (0000-0003-2523-1123, Pontificia Universidad Javeriana), Daniela Rodríguez (0000-0002-0038-3510, Departamento de Ecología Universidad Javeriana Bogotá Colombia), Pablo R Stevenson (0000-0003-2394-447X, Laboratorio de Ecología de Bosques Tropicales y Primatología—Departamento de Ciencias Biológicas Universidad de los Andes Bogotá Colombia)
Year2024
Volume86
Issue12
Pagese23683-e23683
Publication date2024-12-01
Open AccessYes
TypeARTICLE
VenueAmerican Journal of Primatology (JOURNAL)
Journal identifiersISSN: 0275-2565 • E-ISSN: 1098-2345
PublisherWiley (PUBLISHER • GB)
DOI10.1002/ajp.23683
PMID39267526
OpenAlexW4402525930
LanguageEN
References cited50

In ecological contexts natural selection might favor individuals with a larger body mass to monopolize resources; however, there is wide variation in body mass within populations and potential factors. In this study, we evaluated whether fruit production limits body mass in one group of Sapajus apella , its effects on behavior, and whether there is a relationship between social status and body mass. We recorded activity patterns using focal follows (20 min), body mass (using a modified Ohaus scale), and community wide fruit production estimates (from 60 fruit traps). Body mass remained relatively stable during periods of food scarcity, but in periods of abundance most individuals gained weight, as indicated by their relative growth rates (RGR). Subordinate subadults showed the highest RGR, as expected by their age. In periods of high fruit production activities as traveling, grooming, and playing were more frequent than during fruit scarcity, suggesting energy maximization and potential energetic constraints. We found differences in behavior within the group, as the alpha male was observed feeding more frequently (and for longer periods of time), was more aggressive (e.g., feeding trees), and received more grooming than other individuals. In addition, the alpha male was 60% heavier than the group's average body mass. Our study supports the hypothesis that body weight gain is related to fruit abundance and that body size is associated with social dominance; however, large individuals (both males and females) seem to incur in high metabolic or reproductive costs, as they do not gain much weight as smaller individuals

Biology · Zoology · Bat Biology and Ecology Studies · Neuroendocrine regulation and behavior · Primate Behavior and Ecology · Ecology

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