Journal of Economic Entomology (1996) 89, 816-819

Robin V. Gunning (1996)
Bioassay for detecting pyrethroid nerve insensitivity in Australian Helicoverpa armigera (Lepidoptera: Noctuidae)
Journal of Economic Entomology 89 (4), 816-819
Abstract: A simple locomotory knockdown bioassay was used to detect Kdr-like nerve insensitivity to pyrethroids in pyrethroid resistant Australian cotton bollworms, Helicoverpa armigera (Hübner), larvae. Resistant populations with high-level nerve insensitivity had >250-fold resistance to knockdown compared with susceptible populations. Pyrethroid resistant populations without nerve insensitivity were only 2.5 times more resistant to knockdown than susceptible individuals. Use of a discriminating dose, slightly in excess of the KD₁₀₀ of the resistant strains lacking nerve insensitivity, is suggested as an easy, rapid method to monitor for nerve insensitivity to pyrethroids in H. armigera larvae.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Robin V. Gunning

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Helicoverpa armigera		Australia (South+SE)
	Helicoverpa armigera		Australia (NT+QLD)