Parameters of 137Cs accumulation by Ctenopharyngodon Idella (Valencinnes) muscles in fishing-cribs in cooling-pond of ChNPP

The accumulation of 137Cs by Ctenopharyngodon idella (Valencinnes) was studied up keeping it in fishing-cribs in cooling-pond of ChNPP. In May 2000, at the beginning of research, the contents of 137Cs in muscles was 70 - 130 Bq/kg. The equilibrium condition of the 137Cs contents in water, forage (Phragmitela australis) and C. idella has started in 2.5 – 3.5 months after the beginning of the experiment. At this time 137Cs contents in muscles has achieved 1600 - 2600 Bq/kg. During subsequent 13 months the contents of 137Cs varied within the limits of 1600 - 3800 Bq/kg, that, probably, is explained by peculiarities of seasonal dynamics of radiocesium behaviour in cooling-pond.