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首页> 外文期刊>Ecotoxicology >Evaluating pyrene toxicity on Arctic key copepod species Calanus hyperboreus
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Evaluating pyrene toxicity on Arctic key copepod species Calanus hyperboreus

机译：评估key对关键key足类物种Calanus hyperboreus的毒性

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摘要

Calanus hyperboreus is a key species in the Arctic regions because of its abundance and role in the Arctic food web. Exploitation of the off shore oil reserves along Western Greenland is expected in the near future, and it is important to evaluate the acute and chronic effects of oil emissions to the ecosystem. In this study C. hyperboreus females were exposed to concentrations of 0, 0.1, 1, 10 and 100 nM pyrene and saturated concentrations measured to ~300 nM. Daily quantification of egg and faecal pellet production showed significant decreases in the pellet production, while the egg production was unaffected. The hatching success was also unaffected, although the total reproductive output was reduced with increased pyrene concentrations. Accumulation of pyrene in the copepods was higher in feeding than starving females and only trace amounts of the phase I metabolite 1-hydroxypyrene, were found. Lowered reproductive output, reduced grazing, and reduced ability to metabolize pyrene suggest that oil contamination may constitute a risk to C. hyperboreus recruitment, energy transfer in the food web and transfer of pyrene to higher trophic levels.
机译：由于北极的丰富性及其在北极食物网中的作用，因此高北极乌龟是北极地区的重要物种。预计在不久的将来将开发西格陵兰沿岸的近海石油储量，评估石油排放对生态系统的急性和慢性影响非常重要。在这项研究中，高硼假丝酵母雌性暴露于浓度为0、0.1、1、10和100 nM的saturated，饱和浓度约为300 nM。鸡蛋和粪便颗粒产量的每日定量显示颗粒产量显着下降，而鸡蛋产量不受影响。孵化成功率也没有受到影响，尽管总pyr产量随着pyr浓度的增加而降低。 feeding足类食物中feeding的积累比饥饿的雌性要高，仅发现了痕量的I相代谢产物1-羟基py。生殖产量降低，放牧减少和pyr的代谢能力降低表明，油污染可能构成高硼酸梭菌募集，食物网中能量转移以及of向较高营养级转移的风险。

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