Laboratory evaluation of insect growth regulators against several species of anopheline mosquitoes

Larvicide efficacy of insect growth regulators (pyriproxyfen, methoprene and diflubenzuron), in comparison with the larvicidal and adulticidal efficacy of conventional insecticides, against several species of Anopheline mosquitoes including several insecticide resistant strains were evaluated in laboratory conditions. In all species, no cross resistance between IGRs and the other kinds of insecticides, such as organophosphate, organochlorine, carbamate and pyrethroid, was observed. Relative effectiveness of pyriproxyfen to methoprene ranged from several to 40 times and that to diflubenzuron ranged from 19.5 times to more than 400 times.