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Trends Ecol Evol. 2013 Feb;28(2):119-25. doi: 10.1016/j.tree.2012.08.023. Epub 2012 Sep 17.

Trait-mediated trophic interactions: is foraging theory keeping up?

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1
Humboldt State University, Department of Mathematics, 1 Harpst Street, Arcata, CA 95521, USA. steven.railsback@humboldt.edu

Abstract

Many ecologists believe that there is a lack of foraging theory that works in community contexts, for populations of unique individuals each making trade-offs between food and risk that are subject to feedbacks from behavior of others. Such theory is necessary to reproduce the trait-mediated trophic interactions now recognized as widespread and strong. Game theory can address feedbacks but does not provide foraging theory for unique individuals in variable environments. 'State- and prediction-based theory' (SPT) is a new approach that combines existing trade-off methods with routine updating: individuals regularly predict future food availability and risk from current conditions to optimize a fitness measure. SPT can reproduce a variety of realistic foraging behaviors and trait-mediated trophic interactions with feedbacks, even when the environment is unpredictable.

PMID:
22995894
DOI:
10.1016/j.tree.2012.08.023
[Indexed for MEDLINE]
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