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在两个新热带盆地物种中,对大气颗粒物的次致命暴露产生的多种生态毒理学效应

Diego Ferreira Gomes¹, Thandy Junio da Silva Pinto², David Silva Alexandre¹

¹Laboratory of Ecotoxicology and Applied Ecology - LEEA, Department of Hydraulics and Sanitation, São Carlos School of Engineering, University of São Paulo, São Carlos, SP, Brazil.

Journal of hazardous materials

|November 29, 2025

概括

定居大气颗粒物 (SePM) 对水生无脊椎动物产生负面影响,如藻类Allonais chelata和中间幼虫Chironomus sancticaroli. 这项研究揭示了生殖和生长的减少,突出了SePM.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
水生生物学水生生物学

背景情况:

沉性大气颗粒物 (SePM) 是一个重要的水污染物,从工业排放中携带金属.
它对地淡水无脊椎动物的生态毒理学影响尚未完全理解.
阿洛纳斯拉塔和奇罗诺姆斯桑克蒂卡罗利是地环境的生态相关和敏感指标.

研究的目的:

评估SePM对A. chelata和C. sancticaroli.生长和繁殖的影响.
评估SePM对这些物种中氧化应激和细胞损伤生物标志物的影响.
了解SePM在淡水盆地生态系统中所带来的生态毒理风险.

主要方法:

暴露C. sancticaroli幼虫对SePM (0.0011μg/L) 进行了8天.
在A. chelata暴露于SePM (0.011μg/L) 的时间为32天.
评估生长,繁殖和生物标志物 (抗氧化防御,氧化应激,细胞损伤).

主要成果:

没有观察到致命的影响,但A. chelata显示生殖能力降低和生物质增加.
C. sancticaroli 幼虫的体积减少和生物质增加,两种物种都明显摄入了 SePM.
在C. sancticaroli中,生物标志物发生了变化;A. chelata显示金属氨酸,SOD,GSH和LPO的变化.

结论:

SePM对关键的水生无脊椎动物产生负面的次致命影响,影响生长和繁殖.
该研究提供了SePM有害影响和环境监测的必要性的证据.
调查结果强调了评估SePM在水中热带水平的长期影响的重要性.

关键词:

生化生物标志物生化生物标志物淡水无脊椎动物是一种无脊椎动物.增长的增长增长的增长氧化应激是一种氧化应激.生殖生殖的繁殖

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