Azinphosmethyl Resistance in the Tufted Apple Bud Moth (Lepidoptera: Tortricidae): Reversion, Diagnostic Concentrations, Associated Esterases, and Glutathione Transferases
Authors: BUSH, M. R.; ABDEL-AAL, Y.A.I.; SAITO, K.; ROCK, G. C.
Source: Journal of Economic Entomology, Volume 86, Number 2, April 1993 , pp. 213-225(13)
Publisher: Entomological Society of America
Abstract:In 1989 sticky-card bioassays performed on adult males collected in pheromone traps showed 41-fold resistance to azinphosmethyl in a field population of tufted apple bud moth, Platynota idaeusalis (Walker). After 17 generations under laboratory rearing conditions without azinphosmethyl selection, azinphosmethyl resistance in neonates and male adults reverted to a level approaching that of a susceptible strain. Estimated LC95s and LC99s (340 and 760 µg [AI]/g adhesive, respectively) of susceptible moth populations were selected as diagnostic concentrations of azinphosmethyl and used to assay three field populations of adult males for azinphosmethyl resistance in 1990 and 1991. Glutathione-transferase activities were not associated with azinphosmethyl resistance in laboratory strains. Elevated nonspecific-esterase activities were found in resistant laboratory strains and a field population with a high level of resistance. Among the nonspecific esterases, the presence of one esterase (E6) was closely associated with azinphosmethyl resistance in field populations. In this study, nonspecific-esterase assays gave an accurate assessment of azinphosmethyl resistance in this tortricid species, but a specific assay that detects the E6 will provide the sensitivity necessary to detect moderate to low levels of resistance in field populations.
Document Type: Research Article
Publication date: April 1, 1993
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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