THE ACCUMULATION OF RADIONUCLIDES BY THE THORNBACK RAY, RAIA CLAVATA L., IN THE IRISH SEA

Abstract
A study of the levels of radionuclides accumulated by the thornback ray, Raia clavata, a nonmigratory species, has been made in the Irish Sea, where these fish have been living most of their lives in an environment contaminated with the fission products Ru106, Ce144, Cs137, and Sr90. The relative importance of the different radionuclides as contaminants of fish tissues and the importance of determining whether a steady‐state system exists in a marine area receiving radioactive wastes arc discussed.

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