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首页> 美国卫生研究院文献>Journal of Toxicology >Measured Copper Toxicity to Cnesterodon decemmaculatus (Pisces: Poeciliidae) and Predicted by Biotic Ligand Model in Pilcomayo River Water: A Step for a Cross-Fish-Species Extrapolation
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Measured Copper Toxicity to Cnesterodon decemmaculatus (Pisces: Poeciliidae) and Predicted by Biotic Ligand Model in Pilcomayo River Water: A Step for a Cross-Fish-Species Extrapolation

机译：在皮尔科马尤河水中测得的对拟南芥（双鱼座：Poeciliidae）的铜毒性并通过生物配体模型预测：跨鱼种外推法的步骤

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摘要

In order to determine copper toxicity (LC50) to a local species (Cnesterodon decemmaculatus) in the South American Pilcomayo River water and evaluate a cross-fish-species extrapolation of Biotic Ligand Model, a 96 h acute copper toxicity test was performed. The dissolved copper concentrations tested were 0.05, 0.19, 0.39, 0.61, 0.73, 1.01, and 1.42 mg Cu L−1. The 96 h Cu LC50 calculated was 0.655 mg L−1 (0.823 − 0.488). 96-h Cu LC50 predicted by BLM for Pimephales promelas was 0.722 mg L−1. Analysis of the inter-seasonal variation of the main water quality parameters indicates that a higher protective effect of calcium, magnesium, sodium, sulphate, and chloride is expected during the dry season. The very high load of total suspended solids in this river might be a key factor in determining copper distribution between solid and solution phases. A cross-fish-species extrapolation of copper BLM is valid within the water quality parameters and experimental conditions of this toxicity test.
机译：为了确定对南美Pilcomayo河水中的本地物种（Cnesterodon decemmaculatus）的铜毒性（LC50），并评估Biotic Ligand模型的跨鱼种外推法，进行了96 h急性铜毒性测试。测试的溶解铜浓度分别为0.05、0.19、0.39、0.61、0.73、1.01和1.42µmg Cu L -1 。计算得出的96 h Cu LC50为0.655 mg L -1 （0.823-0.488）。 BLM预测的吡美pro的96h Cu LC50为0.722 mg L -1 。对主要水质参数的季节间变化的分析表明，预计在干旱季节钙，镁，钠，硫酸盐和氯化物的保护作用更高。这条河中总悬浮固体的极高负荷可能是确定固相和固溶相之间铜分布的关键因素。在该毒性试验的水质参数和实验条件下，铜BLM的跨鱼种外推法是有效的。

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