Document Detail

The role of variability and risk on the persistence of shared-enemy, predator-prey assemblages.
MedLine Citation:
PMID:  12628228     Owner:  NLM     Status:  MEDLINE    
The role of indirect effects such as apparent competition in structuring predator-prey assemblages has recently received empirical attention. That one prey species can be excluded by the impact of a shared-enemy contrasts with the known diversity of multispecies predator-prey interactions. Here, the role of predator foraging among patches of two different prey species is examined as a mechanism that can mediate coexistence in multispecies prey-predator assemblages. Specifically, models of host-parasitoid interactions are constructed to analyse how different types of aggregative behaviour (generated by host-dependent and host-independent responses) affect persistence of the assemblage. How the distribution of hosts and the response of the parasitoid to these distributions can influence coexistence is shown. A generic explanation for coexistence suggests that it is the variability rather than the precise functional relationship that is critical for coexistence under shared-enemy interactions.
Michael B Bonsall
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of theoretical biology     Volume:  221     ISSN:  0022-5193     ISO Abbreviation:  J. Theor. Biol.     Publication Date:  2003 Mar 
Date Detail:
Created Date:  2003-03-11     Completed Date:  2003-09-16     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0376342     Medline TA:  J Theor Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  193-204     Citation Subset:  IM    
Department of Biological Sciences and Centre for Population Biology, Imperial College, Silwood Park, Ascot, Berkshire SL5 7PY, UK.
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MeSH Terms
Host-Parasite Interactions*
Models, Statistical*
Population Dynamics
Predatory Behavior*

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