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EVALUATION OF MASS TRAPPING FOR CONTROLLING THE SPOTTED TENTIFORM LEAFMINER, PHYLLONORYCTER BLANCARDELLA (FABR.) (LEPIDOPTERA: GRACILLARIIDAE)

Published online by Cambridge University Press:  31 May 2012

R.M. Trimble  and
E.A.C. Hagley
R.M. Trimble
Affiliation:
Agriculture Canada Research Station, Vineland Station, Ontario, Canada LOR 2E0
E.A.C. Hagley
Affiliation:
Agriculture Canada Research Station, Vineland Station, Ontario, Canada LOR 2E0
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Abstract

Mass trapping for control of the spotted tentiform leafminer, Phyllonorycter blancardella (Fabr.), was evaluated during 1986 in one experimental orchard near Jordan Station, Ont., and in three commercial orchards in Norfolk County, Ont. Multi-Pher II® traps were used to trap adult males, and Vineland traps were used to monitor adult activity and to obtain a measure of the effect of mass trapping on adult male abundance. In the experimental orchard, Vineland trap catches were similar in the trapped and control plots. In two of the three commercial orchards Vineland trap catches were significantly smaller in the trapped plots during one of the three yearly activity periods. Pre-adult leafminer density was significantly lower in the trapped than in the control plots on three of the seven sample dates in the experimental orchard whereas in the commerical orchards, where up to 91 times as many adult males were trapped per plot per activity period, pre-adult density was significantly lower in the trapped plots only in one orchard on one sample date.

Résumé

Le piégeage intensif pour lutter contre la mineuse du pommier, Phyllonorycter blancardella (Fabr.), a été évalué en 1986 dans un verger expérimental près de Jordan Station (Ontario) et dans trois vergers commerciaux dans le comté de Norfolk (Ontario). Des pièges Multi-Pher II® ont servi à piéger des mâles adultes et les pièges Vineland ont servi à étudier l’activité des adultes et à mesurer l’effet du piégeage intensif sur l’abondance des mâles adultes. Dans le verger expérimental, les captures au piège Vineland sont comparables pour les parcelles piégées et témoins. Dans deux des trois vergers commerciaux, les captures au piège Vineland sont significativement plus faibles dans les lots piégés au cours de l’une des trois périodes d’activité annuelles. La densité de population de mineuses juvéniles est significativement plus faible dans les parcelles piégées que témoins pour trois des sept dates d’échantillonnage dans le verger expérimental, alors que dans les vergers commerciaux où jusqu’à 91 fois plus de mâles adultes ont été piégés par parcelle par période d’activité, la densité de mineuses juvéniles est significativement plus faible dans les parcelles piégées, et ce, seulement dans un verger et pour une seule date d’échantillonnage.

Type
Articles
Information
The Canadian Entomologist , Volume 120 , Issue 2 , February 1988 , pp. 101 - 107
Copyright
Copyright © Entomological Society of Canada 1988

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