Absorption and elimination of lindane by Asellus aquaticus (Crustacea, Isopoda)

In 48-h experiments, bioaccumulation of lindane by Asellus aquaticus increased linearly with aqueous exposure concentration (1-10 ug per litre). Bioconcentration factors were around 50. In subsequent experiments, A. aquaticus were exposed to 2 ug lindane per litre for 5 days, followed by 3 days depuration. Uptake was rapid, with concentrations of lindane in the organisms reaching a plateau (approximately 200 ng per g) after 3 days. Depuration was also rapid, with over 40 per cent of accumulated lindane being eliminated within 24 h. Aqueous concentrations of lindane decreased during uptake by A. aquaticus, and vice versa.