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Field evaluation of host kairomones and pheromones for capture of Conophthorus coniperda (Coleoptera: Scolytidae)

Published online by Cambridge University Press:  02 April 2012

A.M. Brauner  and
P. de Groot
A.M. Brauner
Affiliation:
Faculty of Forestry, University of Toronto, 33 Willcocks Street, Toronto, Ontario, Canada M5S 3B3
P. de Groot*
Affiliation:
Natural Resources Canada, Canadian Forest Service, Great Lakes Forestry Centre, 1219 Queen Street East, Sault Ste. Marie, Ontario, Canada P6A 2E5; Faculty of Forestry, University of Toronto, 33 Willcocks Street, Toronto, Ontario, Canada M5S 3B3
*
2Corresponding author (e-mail: pdegroot@nrcan.gc.ca).
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Abstract

Field studies were conducted to determine the attractiveness of monoterpenes and pheromones to the white pine cone beetle, Conophthorus coniperda (Schwarz), the most destructive cone and seed pest of eastern white pine, Pinus strobus L. (Pinaceae). Limonene was identified as a new attractant that acts synergistically when added to the female-produced sex pheromone, pityol. Trap catches were higher with increasing release rates of S-(–)-limonene. The enantiomers of limonene showed equivalent efficacy on mean trap catch. (–)-β-Pinene was not attractive and may be repellent to both sexes, and (–)-α-pinene was shown to have no effect on female response when added to pityol or pityol + S-(–)-limonene. The pheromones trans-verbenol, trans-pinocarveol, and myrtenol were not attractive to C. coniperda.

Résumé

Des études sur le terrain ont été effectuées afin de déterminer le pouvoir attractif des monoterpènes et des phéromones sur le scolyte des cônes du pin blanc (Conophthorus coniperda (Schwarz)), le ravageur le plus destructeur des cônes et des graines du pin blanc (Pinus strobus L.) (Pinacées). Le limonène a été identifié comme un nouvel attractif et a un effet synergique lorsqu'il est ajouté au pityol, une phéromone sexuelle femelle. Plus le taux de libération de S-(–)-limonène augmentait, plus le nombre de captures dans les pièges était élevé. L'efficacité des énantiomères du limonène s'est avérée équivalente du point de vue du nombre moyen des captures dans les pièges. Le (–)-β-pinène n'était pas attractif et pourrait avoir un effet répulsif sur les deux sexes, et le (–)-α-pinène s'est révélé sans effet sur la réaction des femelles lorsqu'il était en mélange avec le pityol ou le pityol + S-(–)-limonène. Les phéromones trans-verbénol, trans-pinocarvéol et myrténol n'avaient aucun pouvoir attractif sur le C. coniperda.

Type
Articles
Information
The Canadian Entomologist , Volume 138 , Issue 5 , October 2006 , pp. 723 - 732
Copyright
Copyright © Entomological Society of Canada 2006

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