对聚乙烯微粒的急性暴露和对水的影响 Moina Macrocopa
Bao-Son Trinh1, Le Thi Lien2, Pham Anh Duc3
1Institute for Environment and Resources, Viet Nam National University of Ho Chi Minh City, Ho Chi Minh city, Vietnam. bao-son.trinh@hcmier.edu.vn.
Bulletin of environmental contamination and toxicology
|August 10, 2024
概括
聚乙烯微珠 (PEMB) 被水 (Moina macrocopa) 摄入,导致生存率显著下降. 尽管被摄入,但这些微塑料不会显著影响生殖.
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:
- 微塑料是普遍存在的环境污染物.
- 摄入较低的食物网有机体可以导致食物网转移,并将风险转移到更高的食物网水平.
- 了解微塑料对动物浮游生物的影响对于水生生态系统健康至关重要.
研究的目的:
- 研究聚乙烯微珠 (PEMB) 对成年水 (Moina macrocopa) 的积累和影响.
- 评估急性PEMB暴露对生存和繁殖的影响.
- 评估不同尺寸的微塑料对动物浮游生物构成的风险.
主要方法:
- 成年Moina macrocopa被暴露在不同度的PEMB (0,5,50,500毫克/升) 中24小时和48小时.
- 在生物体中PEMB的积累量化.
- 在不同的暴露条件下,监测了存活率和生殖率.
主要成果:
- 在24小时内,Moina macrocopa摄入了PEMB,在更高度下观察到积累.
- 随着PEMB度的增加,观察到累积生存率的统计显著下降.
- 没有发现累积繁殖的显著减少,尽管注意到下降趋势.
结论:
- 相对较大的聚乙烯微珠可以被较小的动物浮游生物 (如Moina macrocopa) 摄入.
- 摄入PEMB对这些水生无脊椎动物的生存构成潜在风险.
- 需要进一步的研究来了解水生食物网中微塑料暴露的长期生态后果.
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Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...