准备的微塑料在低pH条件下与Artemia salina相互作用,代表海洋酸化;模拟的环境暴露
Pazhamthavalathil Anil Athulya1, Zachariah Sunil1, Sonia Manzo2
1Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India.
Journal of environmental management
|October 23, 2023
概括
海洋酸化和微塑料污染对盐水造成伤害. 联合暴露会导致海洋动物浮游生物的氧化应激和发育异常,影响其生理和发育.
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:
- 海洋酸化和微塑料污染是全球重要的生态威胁.
- 关于这些压力因素对海洋生物的联合毒理影响的研究有限.
- 现有研究经常使用人工微塑料,与现实环境污染物不同.
研究的目的:
- 研究海洋酸化和微塑料对盐水 (Artemia salina) 的综合影响.
- 评估这些同时发生的压力因素对关键动物浮游生物物种的生理和发育影响.
- 在实验设计中使用环境相关的微塑料.
主要方法:
- 人工酸性天然海水使用受控的二氧化碳扰动.
- 暴露在微塑料和低pH条件下的Artemia salina囊和nauplii.
- 评估了化速度,活性氧物种 (ROS) 和超氧化物脱酶 (SOD) 活性.
- 监测nauplii和幼虫的形态发展.
主要成果:
- 单次暴露于微塑料或低pH值显著降低了Artemia salina化率.
- 联合暴露并没有显著影响化率.
- 这两种压力因素单独增加了ROS水平;在特定度下观察到添加效应.
- SOD活动单独增加,但不是添加.
- 在联合暴露下,在nauplii和青少年中观察到附属体的显著形态异常.
结论:
- 对微塑料和低pH值的联合暴露会在海洋浮游生物中引起显著的氧化应激.
- 这些同时发生的压力因素会对盐水的正常发育和形态产生不利影响.
- 进一步的研究对于了解对其他海洋生物的协同毒理影响至关重要.
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