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RELATIONSHIPS BETWEEN CATCH IN PHEROMONE-BAITED TRAPS AND LARVAL DENSITY OF THE SPRUCE BUDWORM, CHORISTONEURA FUMIFERANA (LEPIDOPTERA: TORTRICIDAE)1

Published online by Cambridge University Press:  31 May 2012

S. B. Ramaswamy ,
R. T. Cardé  and
J. A. Witter
S. B. Ramaswamy
Affiliation:
Department of Entomology and Pesticide Research Center, Michigan State University, East Lansing 48824
R. T. Cardé
Affiliation:
Department of Entomology and Pesticide Research Center, Michigan State University, East Lansing 48824
J. A. Witter
Affiliation:
School of Natural Resources, The University of Michigan, Ann Arbor 48109
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Abstract

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Larval densities and catch of adult male Choristoneura fumiferana (Clemens) in pheromone-baited covered funnel traps in the same year were highly correlated. Such traps avoid saturation problems associated with conventional sticky traps. Release of marked males resulted in recapture rates of up to 21% in covered funnel traps. The findings suggest that non-saturating pheromone-baited traps could be used to monitor population densities and trends of the spruce budworm.

Résumé

La densité larvaire et la capture de mâles adultes de Choristoneura fumiferana à l'aide de pièges à entonnoirs couverts et appâtés de phéromone se sont avérées hautement corrélées pour une même année. Ces pièges évitent les problèmes de saturation des pièges collants conventionnels. Des pièges à entonnoirs couverts ont permis de recapturer jusqu'à 21% de mâles marqués et libérés. Ces résultats indiquent que les pièges à phéromone non saturables pourraient être utilisés pour la surveillance des densités de population de la tordeuse et leur tendances.

Type
Articles
Information
The Canadian Entomologist , Volume 115 , Issue 11 , November 1983 , pp. 1437 - 1443
Copyright
Copyright © Entomological Society of Canada 1983

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