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TOXICITY OF FIPRONIL ENANTIOMERS TO THE WATER FLEA AND BLACK FLY
Citation:
KONWICK, B., A. W. GARRISON, A. FISK, M. BLACK, AND J. OVERMYER. TOXICITY OF FIPRONIL ENANTIOMERS TO THE WATER FLEA AND BLACK FLY. Presented at 230th American Chemical Society National Meeting, Washington, DC, August 28 - September 01, 2005.
Impact/Purpose:
To determine the environmental occurrences, fate, and effects of the enantiomers of selected chiral pesticides and other chiral pollutants.
Description:
In this research, we analyzed the enantiomer-specific toxicity of fipronil using two aquatic invertebrate species. Acute toxicity to Ceriodaphnia dubia (water flea) indicated that the (+) enantiomer was significantly more toxic than the (-) enantiomer, with about a 3-fold difference in LC50 values. For Simulium vittatum IS-7 (black fly), both fipronil enantiomers were equally toxic. However, the response to fipronil was markedly different between the two invertebrate classes with the black fly being nearly 2 orders of magnitude more sensitive than the water flea.