Pesticide Science (1997) 51, 315-320

Alan R. McCaffery, David J. Head, Tan Jianguo, Aart A. Dubbeldam, Vadakanthara R. Subramaniam and Amanda Callaghan (1997)
Nerve insensitivity resistance to pyrethroids in heliothine Lepidoptera
Pesticide Science 51 (3), 315-320
Abstract: A neurophysiological assay developed previously was used to assess the incidence of nerve insensitivity resistance to synthetic pyrethroids in field strains of Helicoverpa armigera. Almost 70% of individuals from a sample of a highly pyrethroid-resistant population from Jiangsu Province, China were nerve-insensitive. Subsequent selection resulted in a strain homogeneous for expression of this mechanism. Likewise, over 95% of a sample from a strain of the insects from Andhra Pradesh, India were nerve-insensitive and a homogeneous strain was developed. Development of a nerve-insensitive laboratory strain of Heliothis virescens was undertaken but homozygosity could not be obtained. It is suggested that high fitness costs may be associated with this mechanism. The incidence of nerve insensitivity in Heliothine pests is reviewed and the role of phenotypic expression assays in molecular studies highlighted.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Amanda Callaghan, Alan R. McCaffery

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Helicoverpa armigera		India
	Helicoverpa armigera		China (NE)
	Heliothis virescens