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Protozoan parasites in group-living primates: testing the biological island hypothesis.
MedLine Citation:
PMID:  21898515     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A series of articles by W.J. Freeland published in the 1970s proposed that social organization and behavioral processes were heavily influenced by parasitic infections, which led to a number of intriguing hypotheses concerning how natural selection might act on social factors because of the benefits of avoiding parasite infections. For example, Freeland [1979] showed that all individuals within a given group harbored identical gastrointestinal protozoan faunas, which led him to postulate that social groups were akin to "biological islands" and suggest how this isolation could select specific types of ranging and dispersal patterns. Here, we reexamine the biological island hypothesis by quantifying the protozoan faunas of the same primate species examined by Freeland in the same location; our results do not support this hypothesis. In contrast, we quantified two general changes in protozoan parasite community of primates in the study area of Kibale National Park, Uganda, over the nearly 35 years between sample collections: (1) the colobines found free of parasites in the early 1970s are now infected with numerous intestinal protozoan parasites and (2) groups are no longer biological islands in terms of their protozoan parasites. Whatever the ultimate explanation for these changes, our findings have implications for studies proposing selective forces shaping primate behavior and social organization. Am. J. Primatol. 73:1-8, 2011.© 2011 Wiley-Liss, Inc.
Authors:
Colin A Chapman; Dwight D Bowman; Ria R Ghai; Jan F Gogarten; Tony L Goldberg; Jessica M Rothman; Dennis Twinomugisha; Chesley Walsh
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-9-6
Journal Detail:
Title:  American journal of primatology     Volume:  -     ISSN:  1098-2345     ISO Abbreviation:  -     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-9-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8108949     Medline TA:  Am J Primatol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2011 Wiley-Liss, Inc.
Affiliation:
Department of Anthropology and McGill School of Environment, McGill University, Montreal, Quebec, Canada; Wildlife Conservation Society, Bronx, New York. Colin.Chapman@McGill.ca.
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