期刊
ESTUARINE COASTAL AND SHELF SCIENCE
卷 87, 期 3, 页码 405-410出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ecss.2010.01.027
关键词
trace metals; anguillid eel; migration; accumulation
资金
- JSPS (The Japan Society for the Promotion of Science)
- Ministry of Education, Culture, Sports, Science, and Technology of Japan [20688008]
In order to understand the metal concentrations in Japanese eel Anguilla japonica, nine elements were analyzed in the livers of different migratory types of eels collected from Tokushima region (south Japan). Migratory types were defined by examining the Sr:Ca ratio in otoliths. The results showed that there were significant differences in V, Cr, Cd, and Pb concentrations among the migratory types. Mature-sea-eels show a higher risk of metal accumulation than other migratory types of eels, and the concentrations of Mn, Cu, and Zn in mature eels were significantly higher than those in immature eels. The study suggests that the eel liver is a valuable bioindicator for trace metals; however, when using the eel as a bioindicator to reveal the pollutants in aquatic systems, life history analysis should be carried out for accurate interpretation of the results. (C) 2010 Elsevier Ltd. All rights reserved.
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