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The Colorado potato beetle in movement

Published online by Cambridge University Press:  02 April 2012

G. Boiteau*
Affiliation:
Potato Research Centre, Agriculture and Agri-Food Canada, PO Box 20280, 850 Lincoln Road, Fredericton, New Brunswick,Canada E3B 4Z7
A. Alyokhin
Affiliation:
Department of Biological Sciences, University of Maine, 5722 Deering Hall, Orono, Maine, United States 04469
D.N. Ferro
Affiliation:
Department of Entomology, University of Massachusetts, Amherst, Massachusetts, United States 01003
*
1Corresponding author (e-mail: boiteaug@agr.gc.ca).

Abstract

The recent introduction of the concept of refuge areas for the management of the Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera : Chrysomelidae), on resistant potato highlighted the existence of important gaps in our knowledge and understanding of this pest's movement within and between habitats. The objective of this review is to synthesize the information available for the benefit of crop managers and to identify subject areas in need of additional research. A traditional, somewhat encyclopedic, review of the old and recent literature on research methods, basics of flight and walking, as well as abiotic and biotic conditions for dispersal, revealed a considerable volume of information accumulated since the early 1900s. There is a consensus on the role of abiotic factors on flight and walking, but a better understanding of the biotic factors will be required before the variability of the dispersal response can be fully explained or predicted. Cybernetic models of orientation proposed in the literature were pulled together into a schematic representation of the orientation process in walking L. decemlineata. The model begins the integration of the different conditions and underlying suggested mechanisms responsible for the orientation of the walking beetle. There is remarkably little information on the orientation of potato beetles during flight. Finally, the seasonality of walking and flight dispersal is reviewed in relation to the host habitat and overwintering sites.

Résumé

L'introduction récente du concept de zones refuges pour la gérance du doryphore de la pomme de terre. Leptinotarsa decemlineata (Say) (Coleoptera : Chrysomelidae), sur les variétés résistantes aux insectes révéla un important manque de connaissances sur les mécanismes et les comportements de dispersion de cet insecte à l'intérieur des champs aussi bien qu'entre les champs. L'objectif de cette revue était de fournir une synthèse de l'information disponible pour le bénéfice des agronomes et pour identifier les domaines prioritaires de recherche. Une revue traditionelle, de type encyclopédique, de la littérature portant sur les méthodes de recherche, les propriétés de base du vol et de la marche aussi bien que les conditions abiotiques et biotiques du mouvement chez le doryphore a révélé un volume considérable de connaissances accumulées depuis le début du 20ième siècle. Les auteurs s'entendent sur le rôle que jouent les conditions abiotiques sur le vol et la marche du doryphore mais il faudra mieux comprendre les conditions biotiques avant que l'on puisse expliquer ou prédire leur rôle comme générateurs de mouvement. Les modèles cybernétiques suggérés pour expliquer l'orientation du doryphore en marche ont été réunis dans un schéma. Il est à espérer que ce schéma encouragera l'unification des conditions et des mécanismes sous-jacents qui sont responsables pour l'orientation des doryphores en marche. Il est remarquable que nous ne connaissions presque rien des mécanismes responsable pour l'orientation des doryphores en vol. Finalement, l'utilisation saisonnière de la marche et du vol par le doryphore est passée en revue en relation avec l'hôte, l'habitat et les sites d'hivernement.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 2003

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