The toxicity of dursban, reldan and abate were tested against the larvae of Culex pipiens L. and Aedes aegypti (L.), in addition to evaluating effect of two bacterial toxins (Bacillus thuringiensis H-14, and B. sphaericus 1593) against C. pipiens larvae.
The synergistic effects of bacterial toxin-insecticide combinations were calculated and the new LCp-lines were determined by using a sublethal toxin dose of B. thuringiensis and B. sphaericus in combination with the three tested insecticides against Culex pipiens larvae, which was the most tolerant mosquito species.
Bacterial toxins potentiated the three used insecticides at different levels of potentiation, depending on the chemical structure of the insecticide used.
