Geographic variation of resistance to organophosphates, propoxur and DDT in the southern house mosquito, Culex quinquefasciatus, in California.

Type

Article

Date of Publication

1985

Original Publication

Journal of the American Mosquito Control Association

Volume

1

Series / Issue

Issue: 3

Pages

279-283

Contributed by

American Mosquito Control Association

Notes

Author(s) - el-Khatib ZI.Georghiou GP.

 

Abstract

A survey of resistance in larvae of Culex quinquefasciatus conducted at three widely separated geographical areas of California, namely Coachella Valley, southeast Los Angeles and northern San Joaquin Valley, revealed high resistance to temephos and lower resistance to chlorpyrifos, methyl parathion and malathion at all locations. Likewise resistance to DDT was high in all areas despite its withdrawal from use since 1970. There was no obvious tolerance to propoxur. Tests for the presence of esterase-2A have shown a close correlation between the frequency of this esterase and the level of organophosphate resistance.

Notes

Author(s) - el-Khatib ZI.Georghiou GP.