贝加尔湖海豹（Phoca sibirica）体内微量元素的积累情况来自贝加尔湖

Trace element accumulation in Baikal seal (Phoca sibirica) from the Lake Baikal.

作者信息

Watanabe I, Ichihashi H, Tanabe S, Amano M, Miyazaki N, Petrov E A, Tatsukawa R

机构信息

Department of Environment Conservation,Ehime University, Tarumi 3-5-7, Matsuyama 790, Japan.

出版信息

Environ Pollut. 1996;94(2):169-79. doi: 10.1016/s0269-7491(96)00079-6.

DOI:10.1016/s0269-7491(96)00079-6

PMID:15093503

Abstract

Trace element concentrations (Fe, Mn, Zn, Cu, Pb, Ni, Cd, Co and Hg) were determined in 60 Baikal seals and in fishes collected from Lake Baikal in 1992. Low levels of Hg and Cd were found in Baikal seals in comparison with those of marine mammals and it was due to their low concentrations in dietary fish. These results suggest that pollution by Hg and Cd was low in Lake Baikal and these toxic elements were unlikely to be the causative factors for mass mortality of Baikal seal in 1987-1988. Significant correlation of Hg concentration between hair and internal tissues suggested the use of hair for Hg monitoring in pinnipeds. Among essential elements, higher Fe and lower Cu levels were specifically found in the liver of Baikal seal. The noticeable accumulation of essential elements might be related to the unique and specific environment of Lake Baikal.

摘要

测定了1992年采集的60只贝加尔湖海豹及贝加尔湖鱼类体内的微量元素浓度（铁、锰、锌、铜、铅、镍、镉、钴和汞）。与海洋哺乳动物相比，贝加尔湖海豹体内汞和镉的含量较低，这是因为其食物鱼类中这些元素的浓度较低。这些结果表明，贝加尔湖汞和镉的污染程度较低，这些有毒元素不太可能是1987 - 1988年贝加尔湖海豹大规模死亡的致病因素。毛发与体内组织中汞浓度的显著相关性表明，毛发可用于监测鳍足类动物体内的汞含量。在必需元素中，特别发现贝加尔湖海豹肝脏中铁含量较高而铜含量较低。必需元素的显著积累可能与贝加尔湖独特的特定环境有关。