Document Detail

Ecological constraints on group size in three species of neotropical primates.
MedLine Citation:
PMID:  2394411     Owner:  NLM     Status:  MEDLINE    
The foraging strategies and association patterns of 3 species of primates (Ateles geoffroyi, Alouatta palliata, Cebus capucinus) were studied over a 5-year period. The objective of the study was to provide a quantitative test of the hypothesis that the size, density and distribution of food resources influence the size of animal groups. In examining the assumptions of this hypothesis, it was shown that these primates used resources that occurred in patches, depleted the patches through their use, and that membership in large subgroups was associated with increased travel costs. The howler and spider monkey groups formed subgroups, the size of which could be predicted from the size, density and distribution of their plant food resources. When resources were clumped and at a low density, both the howler and spider monkeys were found in small subgroups, whereas when patches were uniformly distributed and at high density they formed larger subgroups. Capuchin monkeys, in contrast, did not respond to changes in these ecological variables by forming subgroups or changing the cohesion of their group.
C A Chapman
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Folia primatologica; international journal of primatology     Volume:  55     ISSN:  0015-5713     ISO Abbreviation:  Folia Primatol.     Publication Date:  1990  
Date Detail:
Created Date:  1990-10-11     Completed Date:  1990-10-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370723     Medline TA:  Folia Primatol (Basel)     Country:  SWITZERLAND    
Other Details:
Languages:  eng     Pagination:  1-9     Citation Subset:  IM    
Department of Anthropology and Zoology, University of Alberta, Edmonton, Canada.
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MeSH Terms
Alouatta / physiology*
Cebidae / physiology*
Cebus / physiology*
Food Supply
Group Structure
Population Density

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