Uptake And Elimination Of Cs-137 By Climbing Perch (Anabus Testudineus)

This work describes the uptake and retention/biological elimination of Cs-137 by climbing perch (Anabus testudineus) under laboratory conditions. The accumulated Cs-137 concentration in the whole body of the fish was measured at certain intervals up to 38 d, A significant accumulation of Cs-137 was found, but a steady state accumulation of Cs-137 was not achieved by the end of the experiment, The bioaccumulation factors and the distribution of the radionuclide in edible parts of the fish were determined. The effective half-life of Cs-137 in the fish species was found to be similar to 147 d (average) for elderly and adult fishes and similar to 300 d for younger fishes. Accumulation of Cs-137 in the edible parts of the fish was found to be similar to 77% of whole body accumulation.