Abstract

Data on temporal (July and September) and interannual variations in the content of several heavy metals are presented for the body wall, gonad, and gut of the sea cucumber Eupentacta fraudatrix from coastal waters of two inlets of Peter the Great Bay (Sea of Japan) with different levels of anthropogenic pollution. The gonads mostly accumulate Zn, Fe, Cu and Cd, while the body wall, presumably, Mn and Pb. Moreover, an increase in the heavy metal content in the gut below a certain threshold is asynchronous with changes in the content of most of them in the body wall and/or gonads, which are caused mainly by physiological factors during the spawning period. However, the influence of environmental pollution is significant during the postspawning period. When the heavy metal content in the gut exceeds a certain limit, synchronous variations in concentrations of heavy metals in the gut and tissues were recorded, which highlight impaired control of the heavy metal distribution in the organism. A correlation between the lead content in the gut and gonad indicates the possibility of determining this metal in the gonads as a bioindicator of environmental pollution.

中文翻译：

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日本海沿岸海参Eupentacta欺诈的组织中重金属含量的变化：生理和人为因素的影响

摘要

呈现了海参Eupentacta欺诈体的体壁，性腺和肠道中几种重金属含量的时间（7月和9月）和年际变化的数据。来自彼得大帝湾（日本海）两个入口的沿海水域，其人为污染水平不同。性腺主要积累锌，铁，铜和镉，而体壁可能是锰和铅。此外，肠道中重金属含量的增加低于某个阈值与体壁和/或性腺中大多数重金属含量的变化不同步，这主要是由产卵期间的生理因素引起的。但是，在后期生产期间，环境污染的影响很大。当肠道中的重金属含量超过一定限度时，肠道和组织中重金属的浓度会同时发生变化，这突出了对生物体内重金属分布的控制受损。