Title: CONTACT TOXICITY OF SOME PYRETHROID INSECTICIDES, ALONE AND IN COMBINATION WITH PIPERONYL BUTOXIDE, TO INSECTICIDE-SUSCEPTIBLE AND PYRETHROID-RESISTANT STRAINS OF THE COLORADO POTATO BEETLE (COLEOPTERA: CHRYSOMELIDAE)
Abstract:Abstract Laboratory tests showed that a Colorado potato beetle (CPB), Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae), strain collected from potatoes on a farm near Sherbrooke, Quebec, and...Abstract Laboratory tests showed that a Colorado potato beetle (CPB), Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae), strain collected from potatoes on a farm near Sherbrooke, Quebec, and known in 1979 to be resistant to most recommended organochlorine, organophosphorus, and carbamate insecticides, also had developed 23- to 38-fold levels of resistance to the pyrethroid insecticides permethrin, fenvalerate, and cypermethrin by 1982. Piperonyl butoxide (PB) had only a minor effect on fenvalerate and deltamethrin toxicity to insecticide-susceptible CPB and on deltamethrin toxicity to pyrethroid-resistant CPB. However, PB effectively synergized fenvalerate in pyrethroid-resistant CPB, e.g. a 1:8 fenvalerate:PB mixture was 12-fold more toxic than fenvalerate alone.Read More
Publication Year: 1986
Publication Date: 1986-11-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 20
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