Document Detail

Ecomorphological analysis of trophic niche partitioning in a tropical savannah bat community.
MedLine Citation:
PMID:  12065044     Owner:  NLM     Status:  MEDLINE    
The exceptional diversity of neotropical bat communities is sustained by an intricate partitioning of available resources among the member species. Trophical specialization is considered an important evolutionary avenue towards niche partitioning in neotropical phyllostomid bats. From an ancestral insectivorous condition, phyllostomids evolved into highly specialized frugivorous, carnivorous, nectarivorous, piscivorous and even sanguivorous species. Previously, correlations between cranial morphology and trophic ecology within this group have been documented. Here, we examine the evolutionary relationships between bite force and head shape in over 20 species of bats from a single tropical savannah bat community. The results show that bite force increases exponentially with body size across all species examined. Despite the significant differences between large dietary groups using traditional analysis (i.e. non-phylogenetic) and the strong evolutionary correlations between body mass and bite force, phylogenetic analyses indicated no differences in bite performance between insectivorous, omnivorous and frugivorous bats. Comparisons of three species with highly specialized feeding habits (nectarivory, piscivory and sanguivory) with the rest of the species in the community indicate that specialization into these niches comes at the expense of bite performance and, hence, may result in a reduction of the trophic niche breadth.
Luis F Aguirre; Anthony Herrel; R van Damme; E Matthysen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Proceedings. Biological sciences / The Royal Society     Volume:  269     ISSN:  0962-8452     ISO Abbreviation:  Proc. Biol. Sci.     Publication Date:  2002 Jun 
Date Detail:
Created Date:  2002-06-14     Completed Date:  2003-01-13     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  101245157     Medline TA:  Proc Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  1271-8     Citation Subset:  IM    
Centro de Biodiversidad y Genetica, Universidad Mayor San Simon, PO Box 538, Cochabamba, Bolivia; Department of Biological Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Belgium.
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MeSH Terms
Chiroptera / anatomy & histology*,  classification,  genetics,  physiology*
Feeding Behavior
Head / physiology
Tropical Climate*

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