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基于原生动物的生物多样性保护基准,用于淡水生态系统中的 triclosan

Kexin Yu¹, Jing Tang¹, Yuting Zhao¹

¹Laboratory of Protozoa, College of Life Science and Technology, Harbin Normal University, Harbin 150025, China; Key Laboratory of Biodiversity of Aquatic Organisms, Harbin Normal University, Harbin 150025, China.

Ecotoxicology and environmental safety

|June 27, 2025

概括

特里克洛桑 (TCS) 消毒剂对淡水生物构成风险. 在物种灵敏度分布 (SSD) 模型中包括原生动物可以改进生态风险评估,从而为保护水生生物多样性提供更低,更安全的门.

科学领域:

环境毒理学环境毒理学
生态毒理学生态毒理学
淡水生态学淡水生态

背景情况:

全球使用三桑 (TCS) 消毒剂威胁到淡水生物多样性.
现有的物种灵敏度分布 (SSD) 模型可能会通过省略二次热量级数据来高估预测无效度 (PNEC).
在水生食物网中至关重要的原生动物在生态风险评估中经常被忽视.

研究的目的:

确定三桑 (TCS) 对关键淡水原生动物物种的急性和慢性毒性.
建立一个全面的TCS对淡水生物的毒性数据集.
通过结合原生动物数据来完善SSD模型,以便更准确地评估生态风险和保护生物多样性.

主要方法:

对Paramecium sp.,Colpoda sp.,Blepharisma sp.和Tetrahymena sp.进行了急性和慢性毒性测试.
编制了一个全面的TCS毒性数据集,包括64种淡水物种.
开发并验证了一种包含原生动物敏感性数据的多型SSD模型.

主要成果:

测试原生动物的特定毒性参数 (EC50,EC10) 确定,其中包括Paramecium sp. 显示出高灵敏度. 显示出高灵敏度.
确定的精炼短期PNEC为1μg/L,长期PNEC为0.021μg/L,用于TCS.
已经证明,将敏感的原生动物数据纳入其中会导致更保守和生态相关的PNEC值.

结论:

包含原生动物毒性数据显著提高了SSD模型对生态风险评估的准确性.
修订后的TCSPNEC值为保护淡水生物多样性提供了科学合理的值.
这种方法支持有效的生物多样性保护战略和保持水生生态系统健康.

关键词:

淡水生物的生物体.原生动物原生动物安全门是指安全门.三克洛桑是一种三克洛桑.

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