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Pesticide Toxicology Laboratory

ISU Entomology / Pesticide Toxicology Laboratory / Three trophic level interactions: Allelochemicals, Manduca sexta (L.) and Bacillus thuringiensis var. kurstaki Berliner

Three trophic level interactions: Allelochemicals, Manduca sexta (L.) and Bacillus thuringiensis var. kurstaki Berliner

Authors: Krischik, V.A., Barbosa, P., Reichelderfer, C.F.
Journal, Volume, Year: Environmental Entomology, volume 17(3):476-482, 1988
Summary

The effects of alkaloid nicotine and the flavonoid rutin on toxicity of Btk to larval Manduca sexta were evaluated. Survival of M. sexta was higher at higher concentrations of nicotine, but high concentrations of rutin did not increase survival. In addition, colony growth of Bt was reduced to a greater extent on agar containing nicotine compared to agar containing rutin.

Comments

This paper suggests that plant allelochemicals may be potentially important factors in reducing larval mortality caused by Bt on certain crops.