Chemiobiokinetic study in freshwater fish exposed to lindane: Uptake and excretion phase rate constants and bioconcentration factors

Abstract

Four species of freshwater fish (Brachidanio rerio, Poecilia reticulata, Salmo gairdneri, Lepomis macrochirus) were exposed to lindane (2–6 μg 1^‐1) in a flow‐through system to investigate chemical bioconcentration kinetics. Lindane concentration was assayed in fish fat and water matrices at different exposure and excretion times. For all species, it was observed that a concentration plateau in fish was already reached after a 60 h exposure, whereas > 90% of lindane apeared to have been excreted after a 160 h excretion period. Bioconcentration and its kinetics did not appear to be significantly species‐dependent. Bioconcentration factors were in the range of 300–730 in fish and from 20 to 50 times as high in fat.

Keywords:

• Bioconcentration
• excretion
• uptake
• freshwater fish
• lindane
• chemiobiokinetics