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Pesticide Toxicology Laboratory

ISU Entomology / Pesticide Toxicology Laboratory / Bacillus thuringiensis serovar. israelensis (ABG-6108) against Chironmids and Some Nontarget Aquatic Invertebrates

Bacillus thuringiensis serovar. israelensis (ABG-6108) against Chironmids and Some Nontarget Aquatic Invertebrates

Authors: Ali, Arshad
Journal, Volume, Year: Journal of Invertebrate Pathology, volume 38, 264-272, 1981
Summary

Bti was applied to experimental ponds at 2 kg/ha, 4 kg/ha, and 10 kg/ha; which resulted in a 23-61%, 52-72%, and 53-88% reduction of Chironomini and Tanytarsini larvae, respectively, during a four week post-treatment period. In a golf course pond, a 3 kg/ha Bti treatment resulted in a 27-65% reduction of total Chironomidae larvae fourteen days after treatment. In both exposure systems, effects on members of the Chironomidae family were short-lived due to reinfestation from untreated areas. Bti had no significant effect on rotifers, Cyclops spp., Daphnia spp., ostracods, the mayfly nymph Baetis sp., corixid and notonectid adults, and larvae and adults of hydroporine and hydrophilid beetles at any treatment level.

Comments

This study treated the members of the Chironomidae family as potential targets of Bti due to various economic and nuisance problems they cause, hence the use of a golf course pond as a field exposure system.