Dynamics of insecticide resistance in Bemisia tabaci : a case study with the insect growth regulator pyriproxyfen

A - Papers appearing in refereed journals

Horowitz, A. R., Kontsedalov, S., Denholm, I. and Ishaaya, I. 2002. Dynamics of insecticide resistance in Bemisia tabaci : a case study with the insect growth regulator pyriproxyfen. Pest Management Science. 58 (11), pp. 1096-1100.

AuthorsHorowitz, A. R., Kontsedalov, S., Denholm, I. and Ishaaya, I.
Abstract

The dynamics of pyriproxyfen resistance in Bemisia tabaci (Gennadius) have been studied intensively in cotton fields and greenhouses in Israel. High resistance to pyriproxyfen evolved one year after its introduction for use on flowers in greenhouses, after three successive applications. After ten years of pyriproxyfen use in cotton fields, with only one application per season, a high level of resistance was observed, but its rate of development differed among localities. It is hypothesized that these differences reflect temporal and spatial variations in the availability of alternative host plants for B tabaci, and that pyriproxyfen resistance evolved most readily in geographically isolated areas. It is also likely that the occurrence and development of resistance is partially biotype-related. Pyriproxyfen use has ceased in high-resistance localities, but in areas with low frequencies of resistance, cotton growers have continued to achieve acceptable control of B tabaci with pyriproxyfen. Due to the absence of applications of pyriproxyfen in some cotton fields, resistance levels tended to decline between 1998 and 2001. Laboratory experiments support the hypothesis that this decline reflects, in part, fitness costs associated with pyriproxyfen resistance. (C) 2002 Society of Chemical Industry.

KeywordsAgronomy; Entomology
Year of Publication2002
JournalPest Management Science
Journal citation58 (11), pp. 1096-1100
Digital Object Identifier (DOI)doi:10.1002/ps.545
PubMed ID12449527
Open accessPublished as non-open access
Funder project or code433
510
ISSN1526498X
PublisherWiley

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