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A MODEL OF PREDATION BY PODISUS MACULIVENTRIS (SAY) ON MEXICAN BEAN BEETLE, EPILACHNA VARIVESTIS MULSANT, IN SOYBEANS

Published online by Cambridge University Press:  31 May 2012

Robert J. O’Neil
Robert J. O’Neil
Affiliation:
Department of Entomology, Purdue University, West Lafayette, Indiana, USA47907
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Abstract

A model of predation by Podisus maculiventris (Say) on Mexican bean beetle, Epilachna varivestis Mulsant, larvae in soybeans is presented. The attack equation described the number of prey attacked as a function of the number of prey, soybean leaf area, and the search behavior of the predator. The area searched by P. maculiventris was related to the amount of leaf area and the number of prey. Predictions of the number of Mexican bean beetles attacked per predator were compared with an independent field data set. The relevance of the predation model to studies of predation in other agricultural systems is discussed.

Résumé

On a élaboré un modèle de la prédation de Podisus maculiventris sur les larves de la coccinelle mexicaine des haricots, Epilachna varivestis Mulsant dans le soya. L’équation d’attaque présentée prédit le nombre de proies attaquées en fonction du nombre de proies, de la surface foliaire du soya, et des caractéristiques de la recherche du prédateur. L’aire de recherche de P. maculiventris est reliée à la surface foliaire et au nombre de proies. Les prévisions obtenues du nombre de coccinelles attaquées ont été comparées avec des données de terrain indépendantes. On discute de la pertinence du modèle de prédation pour d’autres systèmes agricoles.

Type
Articles
Information
The Canadian Entomologist , Volume 120 , Issue 7 , July 1988 , pp. 601 - 608
Copyright
Copyright © Entomological Society of Canada 1988

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