尼罗河 (Oreochromis niloticus) 暴露于微塑料在生物系统中的影响
Xin Hu1, Liu-Jiang Meng2, Han-Dan Liu1
1Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China.
The Science of the total environment
|August 1, 2023
概括
水产养殖生物流体系统中的微塑料 (MP) 对尼罗河的生长和水质的影响很小. 然而,MPs在肝脏中积累,影响抗氧化酶和肌肉组成.
科学领域:
- 水生物质毒理学研究
- 环境科学环境科学
- 水产养殖技术 水产养殖技术
背景情况:
- 微塑料 (MP) 在水产养殖环境中普遍存在,包括生物分流系统.
- 生物点技术系统提供了丰富的微生物环境,有利于培养生物.
- 了解MP对生物群中的水产养殖生物体的影响对于生态风险评估至关重要.
研究的目的:
- 评估微塑料在生物水产养殖系统中对尼罗河鱼 (Oreochromis niloticus) 的潜在影响.
- 评估MP积累,生理反应,以及对鱼生长和生化参数的影响.
- 研究MPs对生物和鱼肠道中的微生物群落的影响.
主要方法:
- 尼罗河 Tilapia 被暴露在聚乙烯微塑料 (32-40μm) 中,在不同度 (0.80,和800件/L) 中,持续28天.
- 分析了水质,鱼生长,消化酶活性,肝体指数,肌肉组成和抗氧化酶水平.
- 综合生物标志物响应指数用于评估生物体对微塑料暴露的整体反应.
主要成果:
- 微塑料对水质,鱼生长或消化酶活性没有显著影响.
- 在肝脏中积累的MPs增加了肝体指数,并降低了肌肉蛋白质和脂质含量.
- 抗氧化酶 (catalase,谷氨S转移酶) 显著增加,表明氧化应激,而微生物群落基本上没有受到影响.
结论:
- 微塑料在生物系统内对尼罗河鱼表现出有限的不良影响,尽管有一些生理压力指标.
- 肝脏中的MP积累和肌肉组成的变化突出显示了潜在的长期风险.
- 这项研究提供了关于水产养殖中MPs的生态风险和生物分流技术系统中鱼类的综合反应的见解.
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