The effect of resource aggregation at different scales: Optimal foraging behavior of Cotesia rubecula

Tenhumberg, B., Keller, M. A., Tyre, A. J. and Possingham, H. P. (2001) The effect of resource aggregation at different scales: Optimal foraging behavior of Cotesia rubecula. American Naturalist, 158 5: 505-518. doi:10.1086/323131

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Author Tenhumberg, B.
Keller, M. A.
Tyre, A. J.
Possingham, H. P.
Title The effect of resource aggregation at different scales: Optimal foraging behavior of Cotesia rubecula
Journal name American Naturalist   Check publisher's open access policy
ISSN 0003-0147
Publication date 2001
Sub-type Article (original research)
DOI 10.1086/323131
Open Access Status File (Publisher version)
Volume 158
Issue 5
Start page 505
End page 518
Total pages 14
Editor C. Chapman
J. Travis
Place of publication Chicago, IL, United States
Publisher The University of Chicago
Collection year 2001
Language eng
Subject C1
239901 Biological Mathematics
270700 Ecology and Evolution
270708 Conservation and Biodiversity
770000 - Environmental Management
Abstract Resources can be aggregated both within and between patches. In this article, we examine how aggregation at these different scales influences the behavior and performance of foragers. We developed an optimal foraging model of the foraging behavior of the parasitoid wasp Cotesia rubecula parasitizing the larvae of the cabbage butterfly Pieris rapae. The optimal behavior was found using stochastic dynamic programming. The most interesting and novel result is that the effect of resource aggregation within and between patches depends on the degree of aggregation both within and between patches as well as on the local host density in the occupied patch, but lifetime reproductive success depends only on aggregation within patches. Our findings have profound implications for the way in which we measure heterogeneity at different scales and model the response of organisms to spatial heterogeneity.
Keyword Biodiversity Conservation
Ecology
Resource Aggregation
Optimal Foraging Behavior
Cotesia Rubecula
Stochastic Dynamic Programming
Spatial Scale
Patch Time Allocation
Adaptive Superparasitism
Solitary Parasitoids
Parasitized Hosts
Predation
Wasps
Hymenoptera
Braconidae
Evolution
Dynamics
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: AEDA Publications
Spatial Ecology Lab Publications
School of Biological Sciences Publications
Ecology Centre Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 12 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 13 times in Scopus Article | Citations
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Created: Tue, 14 Aug 2007, 15:05:22 EST