The influence of extensive aquatic vegetative growth on the larvicidal activity of Bacillus thuringiensis var. israelensis in reducing Simulium vittatum (Diptera: Simuliidae) larvae in their natural habitat.

Type

Article

Date of Publication

1981

Original Publication

Mosquito News

Volume

41

Series / Issue

Issue: 4

Pages

707-712

Contributed by

American Mosquito Control Association

Notes

Author(s) - Frommer, R. L., J. H. Nelson, M. P. Remington and P. H. Gibbs.

 

Abstract

The presence of extensive aquatic vegetative growth (Potamogeton crispus and P. pectinatus) had little effect on reducing the larvicidal activity of Bacillus thuringiensis var. israelensis (Bti) against Simulium vittatum. Following a 35 min exposure to 3.10 ppm (98,800 spores/ml) suspension of Bti, the reduction in S. vittatum larvae over a 96-hr period ranged from 27 to 92% along the entire 312 m length of the test stream.

Notes

Author(s) - Frommer, R. L., J. H. Nelson, M. P. Remington and P. H. Gibbs.