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DISRUPTION OF MATING IN THE SPOTTED TENTIFORM LEAFMINER (LEPIDOPTERA: GRACILLARIIDAE) USING SYNTHETIC SEX PHEROMONE

Published online by Cambridge University Press:  31 May 2012

R.M. Trimble  and
C.A. Tyndall
R.M. Trimble*
Affiliation:
Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, P.O. Box 6000, Vineland Station, Ontario, Canada L0R 2E0
C.A. Tyndall
Affiliation:
Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, P.O. Box 6000, Vineland Station, Ontario, Canada L0R 2E0
*
1 Author to whom all corresponding should be addressed.
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Abstract

The potential for using synthetic sex pheromone to disrupt mating of spotted tentiform leafminers, Phyllonorycter blancardella (F.), was evaluated in four experimental and two commercial apple, Malus domestica (Borkh) (Rosaceae), orchards in Ontario during 1992 and 1993. The average disruption index [i.e., (total number of moths trapped in control plot – total number of moths trapped in pheromone-treated plot)/total number of moths trapped in control plot × 100] was 80.7% when leafminer pheromone, (E)-10-dodecen-1-yl-acetate, was evaporated into square, approximately 400-m2 plots. During the 2-year study, pheromone was evaporated into the pheromone-treated plots at an average hourly rate of 39.6 mg/ha. There was no relationship between the estimated release rate of pheromone and average temperature. There was a negative linear relationship between the disruption index and leafminer density, as measured by the number of moths trapped in the control plot. There was no relationship between the disruption index and the estimated release rate of pheromone. Our results suggest that it may be possible to control the spotted tentiform leafminer using sex-pheromone-mediated mating disruption.

Résumé

Nous avons exploré la possibilité d’utiliser une phéromone sexuelle synthétique pour interrompre l’accouplement chez des Mineuses marbrées, Phyllonorycter blancardella (F.) dans quatre vergers expérimentaux et deux vergers commerciaux de pommes, Malus domestica (Borkh) (Rosaceae) en Ontario, en 1992 et 1993. L’indice moyen d’interruption [i.e., (nombre total de papillons capturés dans une zone témoin – nombre total de papillons capturés dans une zone traitée à la phéromone)/nombre total de papillons capturé dans la zone témoin × 100] a été évalué à 80,7% avec la phéromone de la mineuse, l’acétate de (E)-10-dodécen-1-yl vaporisé dans des parcelles carrées d’environ 400 m2. Au cours des 2 années de l’étude, la phéromone a été vaporisée dans les parcelles traitées à raison de 39,6 mg/(hah) en moyenne. Il n’y avait pas de lien entre le taux estimé de libération de la phéromone et la température moyenne. Nous avons observé une relation linéaire négative entre l’indice d’interruption et la densité des insectes, mesurée en comptant le nombre de mineuses capturées dans la parcelle témoin. Il n’y avait pas de relation entre l’indice d’interruption et le taux estimé de libération de la phéromone. Nos résultats indiquent qu’il est possible de faire la lutte à la Mineuse marbrée en utilisant la phéromone sexuelle pour interrompre l’accouplement.

[Traduit par la Rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 132 , Issue 1 , February 2000 , pp. 107 - 117
Copyright
Copyright © Entomological Society of Canada 2000

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