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在本地鱼种Cnesterodon decemmaculatus中阿特拉津毒性:初步评估

Florencia Núñez-Cresto¹, Fernando Meijide², Tomás Mac Loughlin³

¹IIIA-UNSAM-CONICET, Instituto de Investigación e Ingeniería Ambiental, Escuela de Hábitat y Sostenibilidad, Campus Miguelete, 25 de mayo y Francia, 1650-San Martín, Provincia de Buenos Aires, Argentina; Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental. Buenos Aires, Argentina.

Environmental toxicology and pharmacology

|February 19, 2026

概括

这项研究表明,含有阿特拉的除草剂Atramyl 90 WG®对本地鱼类Cnesterodon decemmaculatus有毒. 暴露导致致命性,神经毒性和基因毒性,表明水生环境中的潜在慢性风险.

科学领域:

环境毒理学环境毒理学
水生生态毒理学水生生态毒理学
农药风险评估农药风险评估

背景情况:

阿特拉津是一种持久性水生农药.
评估除草剂对本地鱼类的影响对于环境健康至关重要.

研究的目的:

评估阿特拉米尔90 WG® (基于阿特拉辛的除草剂) 的毒性.
在Cnesterodon decemmaculatus中确定致命度 (LC50) 和次致命效应.
在急性和次慢性暴露后评估神经毒性和基因毒性.

主要方法:

暴露于Cnesterodon decemmaculatus的阿特拉辛度 (0.5-100mg/L) 在96小时 (急性) 和336小时 (次慢性).
测量死亡率,行为变化 (行为学),乙胆酶 (AChE) 和丁胆酶 (BChE) 活性,以及基因毒性 (划痕/叶片核).

主要成果:

96小时和336小时的LC50值分别为74.03mg/L和13.61mg/L.
观察到鱼的速度下降,运动时间改变,ACHE/BChE抑制/升高,基因毒性作用增加 (1-10mg/L).

结论:

基于阿特拉辛的除草剂对Cnesterodon decemmaculatus构成显著的毒理风险.
微致命效应表明水生生态系统存在潜在的慢性风险.
结果提供了阿特拉津对鱼类健康有害影响的证据.

关键词:

这种动物叫Cnesterodon decemmaculatus.亚特拉辛 (Atrazine) 是一种生态变化生态变化遗传毒性遗传毒性遗传毒性神经毒性的作用.风险评估风险评估风险评估

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