NOT TO BE CITED WITHOUT PRIOR REFERENCE TO THE AUTHORS SC/D06/J27 Trace element accumulations of Antarctic krill, Euphausia
superba, collected from stomach contents of Antarctic minke whales from Antarctic Ocean Areas III, IV, V and VI during 1989/90 and 1998/99. An interaction among Cd-Ni-Mn-Zn was observed in E. superba. These elements have the same distribution in the sea. Levels of Mn, Fe, Cu, Zn and Cd in each of th...
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Format: | Text |
Language: | English |
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Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.465.7839 http://www.icrwhale.org/pdf/SC-D06-J27.pdf |
Summary: | superba, collected from stomach contents of Antarctic minke whales from Antarctic Ocean Areas III, IV, V and VI during 1989/90 and 1998/99. An interaction among Cd-Ni-Mn-Zn was observed in E. superba. These elements have the same distribution in the sea. Levels of Mn, Fe, Cu, Zn and Cd in each of three body length groups in Antarctic krill were significantly different. The results were not consistent with the previous study, suggesting that trace element levels in Antarctic krill may be affected by other life history factors rather than the body length alone. Seasonal change of trace elements in E. superba was observed only in Cd, suggesting that it is affected by the migration pattern. Temporal trends of the toxic elements Cd and Hg concentrations in E. superba were not observed during 1989 and 1999. Trace element, except for Cd, concentrations found in E. superba were almost the same to those levels previously reported in krill from the Japan Sea, the western North Pacific and the western North Atlantic, while Cd concentrations in E. superba reported here were higher than those in the other regions. |
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