Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/27744
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Optimal patch-leaving behaviour: a case study using the parasitoid Cotesia rubecula
Author: Tenhumberg, B.
Keller, M.
Possingham, H.
Tyre, R.
Citation: Journal of Animal Ecology, 2001; 70(4):683-691
Publisher: Blackwell Science Ltd
Issue Date: 2001
ISSN: 0021-8790
1365-2656
Statement of
Responsibility: 
Brigitte Tenhumberg, Mike A Keller, Hugh P Possingham and Andrew J Tyre. Department of Applied and Molecular Ecology, University of Adelaide, Waite Campus.
Abstract: Summary 1. Parasitoids are predicted to spend longer in patches with more hosts, but previous work on Cotesia rubecula (Marshall) has not upheld this prediction. Tests of theoretical predictions may be affected by the definition of patch leaving behaviour, which is often ambiguous. 2. In this study whole plants were considered as patches and assumed that wasps move within patches by means of walking or flying. Within-patch and between-patch flights were distinguished based on flight distance. The quality of this classification was tested statistically by examination of log-survivor curves of flight times. 3. Wasps remained longer in patches with higher host densities, which is consistent with predictions of the marginal value theorem (Charnov 1976). Under the assumption that each flight indicates a patch departure, there is no relationship between host density and leaving tendency. 4. Oviposition influences the patch leaving behaviour of wasps in a count down fashion (Driessen et al. 1995), as predicted by an optimal foraging model (Tenhumberg, Keller & Possingham 2001). 5. Wasps spend significantly longer in the first patch encountered following release, resulting in an increased rate of superparasitism.
Keywords: Cox’s proportional hazards model; host density; oviposition.
Description: The definitive version is available at www.blackwell-synergy.com
RMID: 0020010051
DOI: 10.1046/j.1365-2656.2001.00530.x
Appears in Collections:Agriculture, Food and Wine publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.