Trace element accumulation in hawksbill turtles (Eretmochelys imbricata) and green turtles (Chelonia mydas) from Yaeyama Islands, Japan

被引:126
作者
Anan, Y
Kunito, T
Watanabe, I
Sakai, H
Tanabe, S
机构
[1] Ehime Univ, Ctr Marine Environm Studies, Matsuyama, Ehime 7908566, Japan
[2] Tokyo Univ Agr & Technol, Dept Environm Conservat, Fuchu, Tokyo 1838509, Japan
[3] Yokohama City Univ, Sch Med, Dept Hyg, Kanazawa Ku, Yokohama, Kanagawa 2360004, Japan
关键词
green turtle; hawksbill turtle; sea turtles; trace elements; heavy metals;
D O I
10.1002/etc.5620201220
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Concentrations of 18 trace elements (V, Cr, Mn, Co, Cu, Zn, Se, Rb, Sr, Zr, Mo, Ag, Cd, Sb, Ba, Hg, TI, and Pb) were determined in the liver, kidney, and muscle of green turtles (Chelonia mydas) and hawksbill turtles (Eretmochelys imbricata) from Yaeyama Islands, Okinawa, Japan. Accumulation features of trace elements in the three tissues were similar between green and hawksbill turtles. No gender differences in trace element accumulation in liver and kidney were found for most of the elements. Significant growth-dependent variations were found in concentrations of some elements in tissues of green and hawksbill turtles. Significant negative correlations (p < 0.05) were found between standard carapace length (SCL) and the concentrations of Cu, Zn, and Se in the kidney and V in muscle of green turtles and Mn in the liver, Rb and Ag in kidney, and Hg in muscle of hawksbill turtles. Concentrations of Sr, Mo, Ag, Sb, and TI in the liver, Sb in kidney, and Sb and Ba in muscle of green turtles and Se and Hg in the liver and Co. Se, and Hg in kidney of hawksbill turtles increased with an increase in SCL (p < 0.05). Green and hawksbill turtles accumulated extremely high concentrations of Cu in the liver and Cd in kidney, whereas the levels of Hg in liver were low in comparison with those of other higher-trophic-level marine animals. High accumulation of Ag in the liver of green turtles was also observed. To evaluate the trophic transfer of trace elements, concentrations of trace elements were determined in stomach contents of green and hawksbill turtles. A remarkably high trophic transfer coefficient was found for Ag and Cd in green turtles and for Cd and Hg in hawksbill turtles.
引用
收藏
页码:2802 / 2814
页数:13
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