Document Detail

Differential energy budget and monopolization potential of harem holders and bachelors in Hanuman langurs (Semnopithecus entellus): preliminary results.
MedLine Citation:
PMID:  11536317     Owner:  NLM     Status:  MEDLINE    
The demographic structure in the Hanuman langur (Semnopithecus entellus) population of Jodhpur is extreme, in that some single males monopolize harems with, on average, 25 adult females. It has been proposed that extratroop males, which live in all-male bands, inhabit low-quality habitats and suffer from reduced food provisioning and longer daily travel distances. To compare the resulting energetic consequences for harem holders and bachelors, I estimated their gross energy intake and daily energetic expenditures. This analysis revealed no clear-cut differences between the two classes of males in time spent feeding on provisioned food, daily path length, gross energy intake, and energy expenditure. Due to the small sample size and other limitations of the study design, the hypothesis under investigation can not be evaluated conclusively. The preliminary results suggest, however, that energy budgets of harem holders and bachelors do not differ markedly. The importance of direct ecological pressures to males for our understanding of variation in group composition is highlighted.
O Schülke
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American journal of primatology     Volume:  55     ISSN:  0275-2565     ISO Abbreviation:  Am. J. Primatol.     Publication Date:  2001 Sep 
Date Detail:
Created Date:  2001-09-05     Completed Date:  2001-09-27     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  8108949     Medline TA:  Am J Primatol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  57-63     Citation Subset:  IM    
Copyright Information:
Copyright 2001 Wiley-Liss, Inc.
Abteilung Verhaltensforschung und Okologie, Deutsches Primatenzentrum, Göttingen, Germany.
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MeSH Terms
Cercopithecidae / physiology*,  psychology
Energy Metabolism*
Feeding Behavior
Population Dynamics
Social Behavior*

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

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