Bioaccumulation of Kepone by Spot ('Leiostomus xanthurus'): Importance of Dietary Accumulation and Ingestion Rate

摘要

The relative extent of dietary accumulation and bioconcentration of Kepone by spot (Leiostomus xanthurus) was quantitatively evaluated at food rations of 4, 8, or 20% of the average wet weight of fish. 14C-Kepone was utilized to determine bioconcentration and dietary accumulation separately, while 14C-Kepone-contaminated food (grass shrimp, Palaemonetes pugio) and unlabeled Kepone in water were used to determine simultaneously accumulation from both sources. Grass shrimp and spot were exposed to the same aqueous Kepone concentration (0.04 micrograms/l). A first-order pharmacokinetic equation was used to model Kepone accumulation kinetics during the 19-day uptake and 28-day clearance phases. (Copyright (c) 1986 Elsevier Science Publishers B.V., Biomedical Division.)