Impact of sunlight exposure on the residual efficacy of biolarvicides Bacillus thuringiensis israelensis and Bacillus sphaericus against the main malaria vector, Anopheles gambiae.

ABSTRACT:

Background

Biotic and abiotic factors have been reported to affect the larvicidal efficacy of Bacillus thuringiensis israelensis (Bti) and Bacillus sphaericus (Bs), although the extent to which they are affected has been poorly documented. This paper studies the effect of sunlight exposure on the efficacy of a new larvicide formulation based on both Bti and Bs, herein after referred to as BTBSWAX, applied against two different larval stages.

Methods

The emergence of inhibition exhibited by BTBSWAX at three different dosages (1 g/m², 1.5 g/m², and 2 g/m²) was monitored under semi-field conditions using a total of 32 containers comprising 16 that were covered and 16 that were uncovered. Two experiments were conducted using first- and second-ins

SUBMITTER: Zogo B 

PROVIDER: S-EPMC6390594 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature