Relationship between esterase activity and acrinathrin and methiocarb resistance in field populations of western flower thrips, Frankliniella occidentalis

The western flower thrips, Frankliniella occidentalis (Pergande), is a serious pest in the south-east of Spain owing to its direct feeding on crops, transmission of the tomato spotted wilt virus and its very high level of resistance to insecticides. Mechanisms of resistance were examined using field...

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Bibliographic Details
Published in:Pest management science 2006-12, Vol.62 (12), p.1129-1137
Main Authors: Maymo, Ana C, Cervera, Amelia, Garcera, M Dolores, Bielza, Pablo, Martinez-Pardo, Rafael
Format: Article
Language:English
Subjects:
Frankliniella occidentalis
Tomato spotted wilt virus
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Summary:The western flower thrips, Frankliniella occidentalis (Pergande), is a serious pest in the south-east of Spain owing to its direct feeding on crops, transmission of the tomato spotted wilt virus and its very high level of resistance to insecticides. Mechanisms of resistance were examined using field populations of F. occidentalis with different susceptibilities to acrinathrin, methiocarb (selective insecticides), endosulfan, metamidophos and deltamethrin (broad-spectrum insecticides). Esterase activity towards -naphthyl acetate and p-nitrophenyl acetate in resistant strains was significantly higher than in the reference strain (MLFOM) for both model substrates. This higher activity was significantly correlated with acrinathrin and methiocarb resistance.
ISSN:1526-498X
DOI:10.1002/ps.1284