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首页> 外文期刊>Environmental toxicology and chemistry >COPPER IN INDIGENOUS AND TRANSPLANTED ZEBRA MUSSELS IN RELATION TO CHANGING WATER CONCENTRATIONS AND BODY WEIGHT
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COPPER IN INDIGENOUS AND TRANSPLANTED ZEBRA MUSSELS IN RELATION TO CHANGING WATER CONCENTRATIONS AND BODY WEIGHT

机译：与变化的水浓度和体重有关的斑马鱼中的铜和斑马鱼的铜含量

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摘要

Zebra mussels, Dreissena polymorpha, were collected monthly from a copper-contaminated reservoir over a period of nearly 3 years. Copper concentrations in the organisms showed marked fluctuations reflecting changes in the water contamination. Bioconcentration patterns were influenced by the specific capacity of this sentinel organism to biologically integrate the continuously evolving water pollution; the sampling pattern, which inevitably introduced a certain subjectivity into monitoring results; and weight changes in the animals within the yearly cycle. Consequently, the successive monthly indications obtained with the zebra mussels provided a current biological assessment of a complex dynamic contamination situation. In a second experiment, caged mussels from three different populations were transferred for 3 months into the reservoir and sampled on six occasions. Mortality rates, attachment capacity, and a condition index revealed no substantial fitness disturbances in the transplanted organisms. Differences in dry weight throughout the experiment were attributable to the initial characteristics of each population. The influence of body mass on monitoring results was eliminated by replacing copper concentrations ((μg/g dry weight) with copper burdens (μg/specimen). In terms of copper burdens, the three transplanted populations exhibited very similar metal patterns. Moderate quantitative differences between introduced and indigenous populations were interpreted as the result of physiological adaptation of the indigenous mussels to their contaminated environment. This study showed that the transfer technique with D. polymorpha is a useful tool for active biomonitoring programs.
机译：在近三年的时间内，每月从铜污染的水库中收集斑马贻贝（Dreissena polymorpha）。生物体中的铜浓度显示出明显的波动，反映了水污染的变化。生物浓度模式受到该前哨生物在生物学上整合不断发展的水污染的特定能力的影响；抽样方式，必然在监测结果中引入一定的主观性；在一年周期内动物的体重变化。因此，使用斑马贻贝获得的连续月度适应症提供了对复杂动态污染情况的最新生物学评估。在第二个实验中，将来自三个不同种群的网箱贻贝转移到水库中3个月，并进行了六次采样。死亡率，依附能力和病情指数表明，在移植的生物体中没有明显的适应性障碍。在整个实验中干重的差异可归因于每个人群的初始特征。用铜负荷（μg/标本）代替铜浓度（（μg/ g干重）），消除了体重对监测结果的影响；就铜负荷而言，三个移植种群表现出非常相似的金属模式。外来种群与土著种群之间的差异被认为是土著贻贝对受污染环境的生理适应的结果，这项研究表明，多形衣藻的转移技术是主动生物监测计划的有用工具。

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