Relative potency of Bacillus thuringiensis var. israelensis and Bacillus sphaericus 2362 for Mansonia titillans and Mansonia dyari.

Type

Article

Date of Publication

1990

Original Publication

Journal of the American Mosquito Control Association

Volume

6

Series / Issue

Issue: 2

Pages

325-327

Contributed by

American Mosquito Control Association

Notes

Author(s) - Lord JC.Fukuda T.

 

Abstract

Bacillus thuringiensis var. israelensis (B.t.i.), HD-968-S-1983, and a primary powder of Bacillus sphaericus 2362 were assayed against Mansonia titillans and Ma. dyari. The susceptibility of the 2 species to the individual bacterial toxins was similar. The B.t.i. LC50 values were 50.5 micrograms/liter for Ma. dyari and 54.7 micrograms/liter for Ma. titillans; the B. sphaericus LC50 values were 339.0 micrograms/liter and 347.2 micrograms/liter, respectively. The log dose-probit mortality lines were parallel for both target species. The potency of B. sphaericus relative to B.t.i. was 0.15 for Ma. dyari and 0.16 for Ma. titillans.

Notes

Author(s) - Lord JC.Fukuda T.