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BIOACCUMULATION AND ENANTIOSELECTIVE BIOTRANSFORMATION OF FIPRONIL BY RAINBOW TROUT (ONCORHYNCHUS MYKISS)
KONWICK, B. J., A. T. FISK, J. K. AVANTS, J. M. LONG, AND A. W. GARRISON. BIOACCUMULATION AND ENANTIOSELECTIVE BIOTRANSFORMATION OF FIPRONIL BY RAINBOW TROUT (ONCORHYNCHUS MYKISS). Presented at Fish Physiology, Toxicology, and Water Quality Proceedings of the Eighth International Symposium, Chongqing, CHINA, October 12 - 14, 2004.
To determine the environmental occurrences, fate, and effects of the enantiomers of selected chiral pesticides and other chiral pollutants.
Dietary accumulation and enantioselective biotransformation was determined for rainbow trout (Oncorhynchus mykiss) exposed to fipronil, a widely used chiral pesticide. Measurement of the fish carcass tissue (whole fish minus GI tract and liver) showed a rapid accumulation of fipronil at microgram per gram concentrations during the 32 day uptake phase. The low biomagnification factor (0.05) and short depuration half-life (0.58 d) determined for fipronil indicated a rapid clearance of this compound by the fish, thus fipronil would not be expected to biomagnify in the food chain.