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SOME EFFECTS OF PERMETHRIN ON THE BEHAVIOR OF DROSOPHILA MELANOGASTER MEIGEN (DIPTERA: DROSOPHILIDAE)

Published online by Cambridge University Press:  31 May 2012

S.F.H. Threlkeld
S.F.H. Threlkeld
Affiliation:
Department of Biology, McMaster University, Hamilton, Ontario, Canada L8S 4K1
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Abstract

Avoidance of four strains of Drosophila melanogaster to the pyrethroid insecticide permethrin was studied. All strains showed concentration-dependent avoidance, with avoidance detected at levels as low as 1 ppm. Avoidance was not dependent on the insect acquiring a lethal dose. Some correlation appeared to exist between higher locomotor activity and lower sensitivity to permethrin. The most sensitive strain had the lowest activity. Two of the four strains studied were chosen as permethrin-sensitive mutants following mutagenesis. These two strains had activity levels significantly lower than the original strain from which they were obtained, raising the question as to whether the increased sensitivity to permethrin following mutagenesis reflects an alteration in the target site of permethrin, a neuroactive insecticide.

Résumé

L’évitement de l’insecticide pyrethroïde, permethrin, par quatre souches de Drosophila melanogaster a fait l’objet de cette étude. Pour chacune des souches étudiées, l’évitement était fonction de la concentration et on a détecté un évitement pour des niveaux aussi faibles que 1 ppm. L’évitement n’était pas relié à l’atteinte d’une dose létale par l’insecte. Il semble y avoir corrélation entre une activité locomotrice élevée et un faible évitement du permethrin. La souche la plus sensible était la moins active. Après mutagénèse, deux des quatre souches étudiées ont été choisies comme mutants sensibles au permethrin. Ces deux souches étaient significativement moins actives que la souche originale de laquelle elles ont été obtenues. Ceci soulève la question à savoir si une sensibilité accrue au permethrin, obtenue après mutagénèse, reflète une altération du site cible du permethrin, un insecticide neuro-actif.

Type
Articles
Information
The Canadian Entomologist , Volume 118 , Issue 5 , May 1986 , pp. 481 - 486
Copyright
Copyright © Entomological Society of Canada 1986

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