聚甲基甲酸纳米塑料对多基的作用 Hediste多彩:行为,再生和生化反应
M S S Silva1, Adília Pires1, A Dick Vethaak2
1Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal.
Aquatic toxicology (Amsterdam, Netherlands)
|November 6, 2023
概括
聚甲基甲酸纳米塑料 (PMMA NPs) 负面影响海洋 Hediste diversicolor,影响行为,能量和再生. 即使这些新出现的污染物的度很低,也会对谷底生态系统构成风险.
科学领域:
- 海洋生物学 海洋生物学
- 环境毒理学环境毒理学
- 生态毒理学 生态毒理学
背景情况:
- 微塑料 (MP) 和纳米塑料 (NP) 是海洋环境中的新兴污染物.
- 关于NP大小和聚合物类型对海洋无脊椎动物,特别是盆地物种的影响,存在知识差距.
研究的目的:
- 调查50nm聚甲基甲酸盐 (PMMA) NP对海底盆地多叶藻 Hediste diversicolor 的影响.
- 评估行为,生理和生化终点,包括神经传递,能量代谢,抗氧化状态和氧化损伤.
主要方法:
- 暴露Hediste多彩色对水中50nmPMMANP的不同度 (0.5至500μg/L) 的暴露.
- 对终点的分析,如挖掘时间,胆酶活性,能量代谢,糖原含量,抗氧化酶活性和再生能力.
主要成果:
- 暴露于PMMA NPs减少了挖掘时间和胆酶活性.
- 能量代谢和糖原含量随着PMMA NP暴露而降低.
- 抗氧化酶活动 (SOD,GPx) 增加,防止膜和蛋白质损伤.
- 暴露于PMMANP的多胞体的再生能力降低了,50μg/L是最具影响力的度.
结论:
- 聚甲基甲酸纳米塑料对盆地虫构成潜在风险,特别是在0.5至50μg/L之间的度下.
- 需要进行进一步的研究,以了解不同NP大小和聚合物的对海洋盆地生物的影响,同时考虑沉积物动态.
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