Efficacy of bacillus thuringiensis var. Israelensis as a biocontrol agent against larvae of simuliidae (diptera) in new zealand

Abstract

Preparations of Bacillus thuringiensis var. israelensis were toxic to 2 species of simuliid larvae in streams in the Dunedin area. The rate of recolonisation of treated streams depended on the rate of larval drift and egg hatching. No significant changes to post-treatment population levels of nontarget aquatic insects were observed. © 1983 Taylor & Francis Group, LLC.