Document Detail

Adaptive behaviour, tri-trophic food-web stability and damping of chaos.
MedLine Citation:
PMID:  22090284     Owner:  NLM     Status:  MEDLINE    
We examine the effect of adaptive foraging behaviour within a tri-trophic food web with intra-guild predation. The intra-guild prey is allowed to adjust its foraging effort so as to achieve an optimal per capita growth rate in the face of realized feeding, predation risk and foraging cost. Adaptive fitness-seeking behaviour of the intra-guild prey has a stabilizing effect on the tri-trophic food-web dynamics provided that (i) a finite optimal foraging effort exists and (ii) the trophic transfer efficiency from resource to predator via the intra-guild prey is greater than that from the resource directly. The latter condition is a general criterion for the feasibility of intra-guild predation as a trophic mode. Under these conditions, we demonstrate rigorously that adaptive behaviour will always promote stability of community dynamics in the sense that the region of parameter space in which stability is achieved is larger than for the non-adaptive counterpart of the system.
André W Visser; Patrizio Mariani; Simone Pigolotti
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2011-11-16
Journal Detail:
Title:  Journal of the Royal Society, Interface / the Royal Society     Volume:  9     ISSN:  1742-5662     ISO Abbreviation:  J R Soc Interface     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-04-24     Completed Date:  2012-08-15     Revised Date:  2013-06-27    
Medline Journal Info:
Nlm Unique ID:  101217269     Medline TA:  J R Soc Interface     Country:  England    
Other Details:
Languages:  eng     Pagination:  1373-80     Citation Subset:  IM    
Department of Marine Ecology and Aquaculture, National Institute for Aquatic Resources, Technical University of Denmark, Kavalergaarden 6, 2920 Charlottenlund, Denmark.
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MeSH Terms
Computer Simulation
Feeding Behavior / physiology*
Food Chain*
Models, Biological*
Nonlinear Dynamics*
Population Dynamics*
Predatory Behavior / physiology*

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