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A PROCESS-ORIENTED MODEL OF SPRUCE BUDWORM PHENOLOGY (LEPIDOPTERA: TORTRICIDAE)

Published online by Cambridge University Press:  31 May 2012

Jacques Régnière
Jacques Régnière
Affiliation:
Canadian Forestry Service, Great Lakes Forest Research Centre, Sault Ste. Marie, Ontario P6A 5M7
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Abstract

In this paper a process-oriented model of spruce budworm phenology is developed which produces simulations comparing favorably with observed phenological trends taken from literature. Major features of this model include: (1) non-linear descriptions of temperature-dependent development of larval instars and pupal stadium; (2) three sources of variability in development rates (intrinsic, sex-related, and microclimatic); and (3) generation of daily temperature cycles for four microhabitats from input min-max air temperature data.

Résumé

Un modèle des processus menant au développement phénologique de la tordeuse des bourgeons de l'épinette est décrit. Les résultats sont comparés favorablement à des données tirées de la littérature. Trois principales caractéristiques distinguent ce modèle : (1) les relations température-développement sont décrites par des équations curvilinéaires de haute précision pour les stades larvaires ainsi que pour les pupes; (2) trois sources de variation des taux de développement y sont considérées (intrinsèque, sexuelle, et microclimatique); et (3) les cycles journaliers de température sont produits, pour quatre microhabitats, à partir d'entrées de températures minimum et maximum journalières.

Type
Articles
Information
The Canadian Entomologist , Volume 114 , Issue 9 , September 1982 , pp. 811 - 825
Copyright
Copyright © Entomological Society of Canada 1982

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