微塑料对红藻,Grateloupia turuturu 和 Chondrus sp 的生理影响
Jae Woo Jung1, Qikun Xing1, Ji-Sook Park2
1Department of Marine Science, Incheon National University, Incheon 22012, Korea.
Aquatic toxicology (Amsterdam, Netherlands)
|June 14, 2023
概括
微塑料有害于海洋生物,但它们对红藻的影响各不相同. 冠状病毒 sp. 冠状病毒 sp. 与Grateloupia turuturu不同,显示生长和光合作用减少,表明基于微塑性粘附的特定物种毒性.
科学领域:
- 海洋生物学 海洋生物学
- 环境科学 环境科学
- 生态毒理学 生态毒理学
背景情况:
- 海洋塑料污染是一个重大的环境问题,微塑料对海洋生态系统构成新兴威胁.
- 虽然微塑料对海洋动物的影响已有记录,但它们对宏观藻类的影响仍未得到充分研究.
- 宏藻和红藻一样,在海洋环境中起着至关重要的作用,但它们对微塑料污染的易感性尚未得到充分了解.
研究的目的:
- 研究聚烯微球对两种红藻,Grateloupia turuturu和Chondrus sp.的影响.
- 为了确定宏藻表面特征是否影响微塑料粘附和随后的毒性.
- 评估不同微塑料度对藻类生长,光合作用和氧化应激的影响.
主要方法:
- 两种红藻种,Grateloupia turuturu (滑动表面) 和 Chondrus sp. 这两种红藻. (粗的表面),暴露于五种度的聚乙烯微球 (020,000 ng/L).
- 量化了微塑料粘附于藻类表面的情况.
- 测量了生长速度,光合作用活性和活性氧物种 (ROS) 水平,以评估生理反应.
主要成果:
- 在 Chondrus sp. 中,微塑料粘附率显著更高. 与Grateloupia turuturu相比,这是一个非常好的选择.
- 冠状病毒 sp. 冠状病毒 sp. 暴露在最高的微塑料度 (20,000 ng/L) 中的人表现出生长减缓,光合作用减少,ROS产量增加.
- 在所有测试的微塑料度中,Grateloupia turuturu 没有显著的负面影响.
结论:
- 微塑料对红藻的毒性影响是特定物种的,受宏藻的表面特性和微塑料粘附能力的影响.
- 由于粘附的微塑料减少了光线的透和抑制了气体交换,这可能解释了对Chondrus sp.观察到的负面影响.
- 需要进一步的研究才能充分了解微塑料污染对各种宏藻群体的生态影响.
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