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EFFECT OF PHEROMONE PERMEATION ON SUSTAINED FLIGHT OF MALE SPRUCE BUDWORM

Published online by Cambridge University Press:  31 May 2012

C. Sanders
C. Sanders
Affiliation:
Great Lakes Forestry Centre, Canadian Forest Service, Sault Ste Marie, Ontario, Canada P6A 5M7
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Abstract

Flight durations of male spruce budworm moths, Choristoneura fumiferana (Clem.), that were locked-on to pheromone plumes from female moths were measured in a wind tunnel. Flight was sustained by use of a movable patterned ceiling. The longest sustained flight was 53 min. The effects of different background concentrations of synthetic pheromone were tested by surrounding the female moths with rubber septa loaded with synthetic pheromone. The duration of sustained flights decreased as the concentration of background synthetic pheromone increased, but at all concentrations some males persisted in orientated flight for 10 min or longer.

Résumé

La durée du vol a été mesurée chez des mâles de la Tordeuse des bourgeons de l’épinette, Choristoneura fumiferana (Clem.), exposés à des effluves de phéromone de femelles dans une soufflerie. Le vol a été maintenu au moyen d’un plafond mobile à motifs. La période la plus longue de vol soutenu a été de 53 minutes. Les effets de différentes concentrations ambiantes de phéromone synthétique ont été examinés par l’installation de septums de caoutchouc imbibés de phéromone synthétique autour des femelles. La durée des vols soutenus diminuait en raison inverse de la concentration de phéromone synthétique ambiante, mais, à toutes les concentrations, des mâles ont maintenu leur vol directionnel pendant au moins 10 minutes.

[Traduit par la Rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 130 , Issue 4 , August 1998 , pp. 539 - 544
Copyright
Copyright © Entomological Society of Canada 1998

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