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首页> 外文期刊>Environmental toxicology and chemistry >RELATIONSHIP BETWEEN BIOTIC LIGAND MODEL-BASED WATER QUALITY CRITERIA AND AVOIDANCE AND OLFACTORY RESPONSES TO COPPER BY FISH
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RELATIONSHIP BETWEEN BIOTIC LIGAND MODEL-BASED WATER QUALITY CRITERIA AND AVOIDANCE AND OLFACTORY RESPONSES TO COPPER BY FISH

机译：基于生物配体模型的水质判据与鱼类对铜的回避和嗅觉反应之间的关系

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The U.S. Environmental Protection Agency's (U.S. EPA) water quality criteria for Cu were tested to determine whether they protect fish against neurophysiological impairment. From published studies with rainbow trout (Oncorhynchus mykiss), Chinook salmon (Oncorhynchus tshawytscha), coho salmon (Oncorhynchus kisutch), and fathead minnows (Pimephales promelas), 20% inhibition concentrations (IC20s) were calculated for avoidance of Cu-containing water and for impairment of electroencephalogram (EEG) and electro-olfactogram (EOG) responses to natural odorants in Cu-containing water. Additionally, a Cu-olfactory biotic ligand model (BLM) that fits the coho salmon EOG data was parameterized by changing the sensitivity parameter in the ionoregulatory-based BLM. The IC20s calculated from reported Cu avoidance, EEG, and EOG data and IC20s predicted by the olfactory BLM were compared with acute and chronic Cu criteria calculated using U.S. EPA's BLM 2007 or hardness-adjustment equations. The BLM-based chronic criteria were protective in all 16 exposure water-species combinations used in avoidance and olfaction experiments. Additionally, the BLM-based acute criteria were protective in all 11 exposure water-species combinations in which comparisons could be made with olfactory BLM-predicted IC20s but not in two of the 16 exposure water-species combinations in which comparisons could be made with the reported IC20s (which were ≤8% lower than but did not differ significantly from the BLM-based acute criteria; p > 0.05). In effect, the olfactory BLM factored out the relatively high variability in the reported IC20s. It is concluded that the U.S. EPA's BLM-based water quality criteria for Cu protect against these types of neurophysiological impairment in the six species-endpoint combinations analyzed in this paper. However, the U.S. EPA's hardness-based criteria for Cu sometimes were considerably underprotective and sometimes were much less protective than the BLM-based criteria. Environ.
机译：测试了美国环境保护局（U.S. EPA）的铜水质标准，以确定它们是否保护鱼类免受神经生理损伤。根据已发表的关于虹鳟鱼（Oncorhynchus mykiss），奇努克鲑鱼（Oncorhynchus tshawytscha），银大麻哈鱼（Oncorhynchus kisutch）和黑头min鱼（Pimephales promelas）的已发表研究，计算得出了20％抑制浓度（IC20s）以避免含铜的水和含铜水中对自然气味的脑电图（EEG）和电嗅觉图（EOG）的损害。此外，通过更改基于离子电调节的BLM中的敏感性参数，对适合银鲑EOG数据的Cu嗅觉生物配体模型（BLM）进行了参数化。将根据报告的铜规避，EEG和EOG数据计算出的IC20和通过嗅觉BLM预测的IC20与使用美国EPA的BLM 2007或硬度调整方程计算的急性和慢性Cu标准进行比较。在避免和嗅觉实验中使用的所有16种暴露水种组合中，基于BLM的慢性标准均具有保护性。此外，基于BLM的急性标准在所有11种暴露水种组合中都具有保护性，在这些组合中可以与嗅觉BLM预测的IC20进行比较，但在16种暴露水种组合中不能与其中的两种进行比较。报告的IC20（比基于BLM的急性标准低8％，但无明显差异； p> 0.05）。实际上，嗅觉BLM排除了所报告的IC20中相对较高的变异性。结论是，在本文分析的六个物种-终点组合中，美国EPA基于BLM的铜水质标准可防止此类神经生理损害。但是，美国EPA基于铜的硬度标准有时保护性不足，有时其保护性低于基于BLM的标准。环境。

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