[2J09-20] Environmental Radiation

[2J20] Evaluation of radiocesium uptake from water by the starry flounder, an euryhaline fish, under different salinity conditions

*Yuuki Manome¹, Toshihiro Wada¹ (1. Fukushima Univ.)

Keywords:Fish, Radiocesium, Salinity, Bioaccumulation, Rearing experiment

To evaluate radiocesium uptake by fish in seawater and freshwater, a rearing experiment under different salinity conditions (0.1 psu: freshwater, 5 psu: brackish water, 38 psu: seawater) with controlled radiocaesium concentrations of water was conducted for the starry flounder, an euryhaline fish. Results revealed that radiocesium uptake of fish was slower in freshwater and brackish water with hypo-osmolality conditions than that in seawater.