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Title
Testing mechanisms of coexistence among two species of frugivorous primates
Author(s)
Houle A., Vickery W.L., Chapman C.A.
Published
2006
Publisher
Journal of Animal Ecology
Published Version DOI
https://doi.org/10.1111/j.1365-2656.2006.01125.x
Abstract
1. We examined mechanisms of coexistence between two congeneric species of frugivorous primates, the blue monkey (Cercopithecus mitis) and the red-tailed monkey (C. ascanius). 2. We used giving-up densities (the amount of food which animals leave in a patch) in fruit trees to measure foraging efficiency and to evaluate possible mechanisms of coexistence. Animals with higher giving-up densities are less likely to persist in the company of those with lower giving-up densities because the former are not able to exploit food patches used previously by the latter. We climbed trees to estimate giving-up densities by counting the fruit which primates left behind. 3. We tested five possible mechanisms of coexistence. Three mechanisms proposed that each frugivorous species has a lower giving-up density than the other in at least one of the following: (1) different tree species, (2) within-tree foraging zones or (3) seasons. The fourth mechanism predicted that the socially dominant species exploits resources first and that the subordinate species has lower giving-up densities. The final mechanism predicted that one species would find resources more quickly than the other, which would in turn have a lower giving-up density. 4. Four of the five mechanisms received no support from our data. Only a trade-off between interspecific dominance and giving-up densities was supported. 5. We discuss the generality of our results and possible interactions with other factors. © 2006 The Authors.
Keywords
coexistence; foraging efficiency; frugivory; primate; testing method; animal; article; Cercopithecus; ecosystem; feeding behavior; fruit; physiology; population dynamics; season; Animals; Cercopithecus; Ecosystem; Feeding Behavior; Fruit; Population Dynamics; Seasons; Animalia; Cercopithecus; Cercopithecus ascanius; Cercopithecus mitis; Primates
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PUB10855