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COMPARISON OF MALE AND FEMALE RESPONSES TO DICOFOL IN EUROPEAN RED MITE, PANONYCHUS ULMI (KOCH), USING A RAPID ASSAY TECHNIQUE

Published online by Cambridge University Press:  31 May 2012

B.K. Mable ,
D.J. Pree  and
T.A. Denbesten
B.K. Mable
Affiliation:
Agriculture Canada Research Station, Box 6000, Vineland Station, Ontario, Canada L0R 2E0
D.J. Pree
Affiliation:
Agriculture Canada Research Station, Box 6000, Vineland Station, Ontario, Canada L0R 2E0
T.A. Denbesten
Affiliation:
Agriculture Canada Research Station, Box 6000, Vineland Station, Ontario, Canada L0R 2E0
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Abstract

Concentration:response regressions were established for male and female Panonychus ulmi from dicofol resistant and susceptible laboratory colonies using a rapid assay technique which utilizes pesticide residues in enclosed Petri dishes. Modification of the technique, which was developed for females, allowed reproducible results with males. Males and females from the resistant population showed similar levels of resistance compared with the susceptible population (ca. 4-fold). Within populations, males were approximately 3-fold more sensitive than females. Implications of these differences for field populations and the usefulness of males in inheritance studies are discussed.

Résumé

Les régressions concentration : réaction ont été établies dans le cas de mâles et de femelles de Panonychus ulmi provenant de colonies de laboratoire résistantes ou sensibles; les insectes ont été soumis à un test expérimental rapide au cours duquel ils étaient exposés à des résidus de pesticide dans des boîtes de pétri fermées. Une modification de la technique, mise au point pour tester des femelles, a permis d’obtenir des résultats valides chez des mâles. Les mâles et les femelles de la population résistante étaient environ quatre fois plus résistants au produit que les individus de la population sensible. Au sein de chaque population, les mâles étaient environ trois fois plus sensibles que les femelles. L’importance de ces différences chez les populations naturelles et la possibilité d’utiliser des mâles dans les études d’hérédité font l’objet d’une discussion.

[Traduit par la rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 123 , Issue 6 , December 1991 , pp. 1157 - 1161
Copyright
Copyright © Entomological Society of Canada 1991

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