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SEASONAL BIOLOGY IN QUEBEC AND PREDICTION OF PHENOLOGY OF THE EUROPEAN SKIPPER, THYMELICUS LINEOLA (LEPIDOPTERA: HESPERIIDAE)1

Published online by Cambridge University Press:  31 May 2012

Jeremy N. McNeil  and
Ron E. Stinner
Jeremy N. McNeil
Affiliation:
Département de biologie, Université Laval, Québec, Québec G1K 7P4
Ron E. Stinner
Affiliation:
Département de biologie, Université Laval, Québec, Québec G1K 7P4
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Abstract

A comparison of the seasonal biology of Thymelicus lineola at Normandin and Joliette, Quebec from 1974 to 1976 showed marked differences between regions for the same year, and within regions for consecutive years. These data together with constant temperature development information were used to develop a predictive phenological model for this insect, which was then validated using independent data sets collected between 1976 and 1981. Good agreement between observed and predicted values were obtained. The usefulness of the model in predicting optimal spraying dates was tested at Amqui and Normandin, Quebec in 1982. Accurate predictions were obtained at least 2 weeks in advance, sufficient for use in a management programme.

Résumé

L'étude comparative de la biologie saisonnière de Thymelicus lineola à Normandin et Joliette, Québec, de 1974 à 1976 a montré des différences importantes entre les régions pour une même année ainsi qu'à l'intérieur d'une même région pour les années consécutives. Ces données, ainsi que celles obtenues pour le temps de développement à des températures constantes, ont été utilisées pour développer un modèle de prédiction de la phénologie de cet insecte.

Ce modèle a été, par la suite, testé utilisant d'autres données indépendantes récoltées entre 1976 et 1981 et une bonne concordance a été obtenu entre les valeurs observées et celles prédites. Le recours à ce modèle afin de prédire les dates optimales d'arrosage a été testée à Amqui et Normandin en 1982. Des bonnes prédictions ont été obtenus au moins deux semaines à l'avance, ce qui permet l'utilisation de ce modèle dans un programme de lutte.

Type
Articles
Information
The Canadian Entomologist , Volume 115 , Issue 8 , August 1983 , pp. 905 - 911
Copyright
Copyright © Entomological Society of Canada 1983

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