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AN INTRASPECIFIC COMPETITION MODEL FOR THE LEAFMINER, AGROMYZA FRONTELLA (RONDANI)

Published online by Cambridge University Press:  31 May 2012

Lothar A. Dohse  and
Jeremy N. McNeil
Lothar A. Dohse
Affiliation:
Département de biologie, Université Laval, CitéUniversitaire, Québec, Canada G1K 7P4
Jeremy N. McNeil
Affiliation:
Département de biologie, Université Laval, CitéUniversitaire, Québec, Canada G1K 7P4
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Abstract

A mathematical model was constructed to simulate the effect of intraspecific larval competition on the survival of Agromyza frontella (Rondani). It was shown that the probabilities of cannibalism and starvation can be expressed as functions of larval density and food availability (leaflet surface area), and that expected pupal weights can be determined from the amount of food available to the third-instar larva. Predictions were compared with data from laboratory experiments and field samples with excellent results.

Résumé

Nous avons construit un modèle mathématique qui simule l’effet de la compétition larvaire intraspécifique sur la survie d’Agromyza frontella (Rondani). Nous avons démontré que les probabilités de cannibalisme et d’inanition peuvent être exprimées en fonction de la densité larvaire et de la disponibilité de nourriture (aire des folioles), et que les poids pupaux anticipés peuvent être déterminés à partir de la quantité de nourriture disponible pour les larves de troisième stade. Les prédictions du modèle sont en accord avec les données provenant d’expériences menées en laboratoire et d’échantillons pris sur le terrain.

Type
Articles
Information
The Canadian Entomologist , Volume 120 , Issue 8-9 , September 1988 , pp. 779 - 786
Copyright
Copyright © Entomological Society of Canada 1988

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