Toxicity of Bacillus thuringiensis var. israelensis to mosquito larvae variously resistant to conventional insecticides.

Type

Article

Date of Publication

1980

Original Publication

Mosquito News

Volume

40

Series / Issue

Issue: 4

Pages

614-618

Contributed by

American Mosquito Control Association

Notes

Author(s) - Sun, C-N., G. P. Georghiou and K. Weiss.

 

Abstract

Two strains of Anopheles albimanus Wied, and five strains of Culex quinquefasciatus Say representing the principal mechanisms of resistance to organophosphorus, carbamate, DDT, dieldrin and pyrethroid insecticides were tested for cross-resistance to Bacillus thuringiensis var. israelensis toxin. Maximum interstrain differences in LC90 upon 48-hr exposure of 4th instar larvae were 1.9x for Culex and 1.5x for Anopheles, indicating that presently-existing resistance to insecticides should not significantly affect the larvicidal activity of this bacterial toxin.

Notes

Author(s) - Sun, C-N., G. P. Georghiou and K. Weiss.