Distribution of Al, As, Cd, Co, Cu, Fe, Mn, Mo, Ni, Pb, Rb, and Zn in the main body parts and total samples of juvenile Antarctic krill Euphausia superba was examined in the northeastern Weddell Sea. The increased contents of Al, Fe, and Mn in total specimens of juvenile krill were detected in the coastal regions near the South Shetland and South Orkney Islands. It can be attributed to high concentration of suspended particulate matter that serve as food for krill both in shallow and deep water. The cephalothorax was found to be an organ of the elevated concentration of Al, Zn, Cu, and Fe; Mo accumulated primarily in the abdominal muscles, while Ni, Co, Cd, As, Rb, and Pb did not show a predominant accumulation in certain krill tissues. The contents of potentially toxic Zn, Cd, Cu, and Pb in the total krill mass did not exceed the maximum permissible concentration (MPC) for marine seafood products, while that of As was two times greater than the MPC that might be caused by both natural and anthropogenic factors.
Antarctica, krill Euphausia superba, heavy metals, trace elements, bioaccumulation
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