Document Detail

Sleeping tree choice by Bwindi chimpanzees.
MedLine Citation:
PMID:  18381629     Owner:  NLM     Status:  MEDLINE    
Unlike nearly all other nonhuman primates, great apes build sleeping nests. In Bwindi Impenetrable National Park, Uganda, chimpanzees build nests nightly and also build day nests. We investigated patterns of nest tree use by Bwindi chimpanzees to understand ecological influences on nest tree selection. We analyzed data on 3,414 chimpanzee nests located from 2000 to 2004. Chimpanzees at Bwindi were selective in their use of nest trees. Of at least 163 tree species known to occur in Bwindi [Butynski, Ecological survey of the Impenetrable (Bwindi) Forest, Uganda, and recommendations for its conservation and management. Report to the Government of Uganda, 1984], chimpanzees utilized only 38 species for nesting. Of these, four tree species (Cassipourea sp., Chrysophyllum gorungosanum, Drypetes gerrardii, and Teclea nobilis) accounted for 72.1% of all nest trees. There was considerable variation in nesting frequencies among the top four species between and within years. However, these species were used significantly more often for nesting than other species in 70.9% (39 of 55) of the months of this study. A Spearman rank correlation found no significant relationship between tree abundance and tree species preference. Ninety-three percent of all nests were constructed in food tree species, although not necessarily at the same time the trees bore food items used by chimpanzees. The results indicate that nesting tree species preferences exist. Bwindi chimpanzees' choice of nesting tree species does not appear to be dependent on tree species density or use of the tree for food. We discuss possible reasons for the selectivity in nest trees by the Bwindi population.
Craig B Stanford; Robert C O'Malley
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of primatology     Volume:  70     ISSN:  1098-2345     ISO Abbreviation:  Am. J. Primatol.     Publication Date:  2008 Jul 
Date Detail:
Created Date:  2008-05-29     Completed Date:  2008-10-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8108949     Medline TA:  Am J Primatol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  642-9     Citation Subset:  IM    
Department of Anthropology, Jane Goodall Research Center, University of Southern California, Los Angeles, CA 90089-0032, USA.
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MeSH Terms
Behavior, Animal / physiology*
Choice Behavior / physiology*
Pan troglodytes / physiology*
Species Specificity
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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