1Japan Frozen Foods Inspection Corporation, Tokyo 105-0012, 2National Research Institute of Fisheries and Environment of Inland Sea, Hiroshima 739-0452, Japan
Penaeus japonicus was exposed to tributyltin chloride (TBTCl) and triphenyltin chloride (TPTCl) for 56 days in a closed circulating experimental system. The bioconcentration factors (BCFs) and uptake and elimination rate constants of TBTCl and TPTCl were determined. TBTCl concentration in the shrimp reached equilibrium at the 14th day of the uptake experiment. BCF of TBTCl ranged from 4700 to 7500, and was larger than the values previously reported in crustaceans such as Daphnia magna, Amphipods and mud crab. On the other hand, BCF of TPTCl ranged from 130 to 260, and was significantly smaller than that of TBTCl. The elimination rate constant of TBTCl and TPTCl was 0.031-0.072day−1 and 0.058day−1, respectively.