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M Goulais¹, D Saulnier¹, J Rouxel¹

¹Ifremer, Université de la Polynésie Française, ILM, IRD, UMR 241 SECOPOL, F-98719 Tahiti, French Polynesia, France.

The Science of the total environment

|September 12, 2024

概括

来自法属波利尼西亚珍珠农场的塑料污染释放有害化学物质. 这些污染物对海洋生物产生负面影响,黑鱼 (Holothuria whitmaei) 显示出高灵敏度,使其成为湖健康的潜在生物指标.

科学领域:

环境化学环境化学
海洋生态毒理学海洋生态毒理学
水产养殖科学水产养殖科学

背景情况:

法属波利尼西亚的珍珠种植严重依赖于水下塑料 (聚乙烯和聚烯).
这些塑料可以将持久性有机污染物 (POP) 和添加剂入海洋环境中.
了解这些浸出化学品的生态毒理影响对于可持续水产养殖至关重要.

研究的目的:

为了识别从珍珠养殖场塑料中出的POP和添加剂.
评估塑料液对法属波利尼西亚主要水产养殖物种的毒性.
确定一个潜在的生物指标物种,用于监测塑料污染.

主要方法:

气相色谱与双重质谱检测 (GC/MSMS) 结合使用,用于分析漏的化学物质.
在五种热带物种上进行了生态毒理学测试:Pinctada margaritifera,Saccostrea cucullata,Holothuria whitmaei,Litopenaeus stylirostris和Tripneustes gratilla.
使用回归模型来确定每个物种的EC50 (有效度).

主要成果:

24小时后,在塑料液中发现了各种POP和添加剂.
在塑料液度和正常胚胎幼虫发育率之间观察到负相关性.
EC50值在6.6至71.5g/L之间,其中Holothuria whitmaei是最敏感的物种.

结论:

来自珍珠养殖的塑料液对海洋生物构成重大生态毒理风险.
霍洛图里亚·惠特梅 (Holothuria whitmaei) 显示出对塑料液的高度敏感性,表明其作为一种新生物指标物种的潜力.
这项研究强调了需要在水产养殖中采用可持续的做法,以减轻热带湖中的塑料污染.

关键词:

生物指标生物指标生态毒理学生态毒理学溶解液是一种溶解液.珍珠养殖是珍珠的养殖方式.塑料污染问题塑料污染问题热带地区的热带物种.

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