Entomology, Department of


Date of this Version

January 1993


Published in Environmental Toxicology and Chemistry 12 (1993), pp 1683-1689. Copyright © 1993 SETAC; published by Pergamon Press Ltd./Elsevier. Used by permission. Journal Series Paper 10056, Nebraska Agricultural Research Division, and Contribution 806 of the Department of Entomology, University of Nebraska–Lincoln.


The acute toxicities of three pyrethroid insecticides (permethrin, cypermethrin, and bifenthrin) and one organophosphate insecticide (chlorpyrifos) were compared by topical application and static exposure to a variety of terrestrial and aquatic insects. Mayflies and damselflies were the most susceptible taxa tested by both exposure methods. The aquatic insects were generally more susceptible than the terrestrial insects when compared on a dose per body weight basis, although the differences were smaller than expected, given the extremely low concentrations that produce toxic effects by static exposure.

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