Primates are often embedded in biodiverse habitats and experience competition not only from conspecifics, but from other species. Despite the richness of their environments, socioecological theory only models the effect of within-species competition on social dynamics. In this talk, I explore the nature and magnitude of feeding competition across scales using behavioral, physiological, and demographic data on a guild of fruit-eating primates in Uganda. My research indicates that indirect between-species competition plays an integral role in the social lives of primates and shapes their interactions with other individuals, social groups, and species.

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