Microplastics in fish species from the eastern Guangdong: Implications to Indo-Pacific humpback dolphin (Sousa chinensis) and human health

IF 3 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Marine environmental research Pub Date : 2024-11-14 DOI:10.1016/j.marenvres.2024.106852

Jinyan Liu , Qilin Gutang , Yingping Fan , Ran Bi , Puhui Zhao , Keqin Zhang , Zewei Sun , Ping Li , Wenhua Liu , Jianxin Wang

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Abstract

Microplastic (MP) pollution is widespread in aquatic environments, accumulating in organisms and transferring through the food web. This study investigated MP abundance, composition, and distribution in 15 fish species from eastern Guangdong, 11 of which are prey for Indo-Pacific humpback dolphins (Sousa chinensis). Results indicated the highest MP abundance in fish gastrointestinal tracts, with pelagic species being the most affected. Ethylene vinyl acetate (EVA) and polyethylene (PE), linked to local industrial activities, were the most prevalent polymers. Risk quotients (RQ) at 95th percentile for Indo-Pacific humpback dolphins exceeded one, suggesting significant MP exposure risk via prey ingestion. In contrast, the MPs risk for humans through fish consumption was minimal. These findings underscore the urgent need for improved plastic waste management to protect marine apex predators.

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粤东鱼类中的微塑料：对印度太平洋中华白海豚和人类健康的影响

微塑料（MP）污染在水生环境中广泛存在，会在生物体内积累并通过食物网转移。本研究调查了粤东地区15种鱼类体内微塑料的丰度、组成和分布，其中11种是印度太平洋中华白海豚（Sousa chinensis）的猎物。结果表明，鱼类胃肠道中的 MP 丰度最高，其中中上层鱼类受影响最大。与当地工业活动有关的乙烯-醋酸乙烯（EVA）和聚乙烯（PE）是最常见的聚合物。印度洋-太平洋座头鲸第 95 百分位数的风险商数（RQ）超过了 1，表明通过摄取猎物接触 MPs 的风险很大。相比之下，人类通过食用鱼类接触 MPs 的风险很小。这些发现强调了改善塑料废物管理以保护海洋顶级掠食者的迫切需要。

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来源期刊

Marine environmental research 环境科学-毒理学

CiteScore

5.90

自引率

3.00%

发文量

217

审稿时长

46 days

期刊介绍： Marine Environmental Research publishes original research papers on chemical, physical, and biological interactions in the oceans and coastal waters. The journal serves as a forum for new information on biology, chemistry, and toxicology and syntheses that advance understanding of marine environmental processes. Submission of multidisciplinary studies is encouraged. Studies that utilize experimental approaches to clarify the roles of anthropogenic and natural causes of changes in marine ecosystems are especially welcome, as are those studies that represent new developments of a theoretical or conceptual aspect of marine science. All papers published in this journal are reviewed by qualified peers prior to acceptance and publication. Examples of topics considered to be appropriate for the journal include, but are not limited to, the following: – The extent, persistence, and consequences of change and the recovery from such change in natural marine systems – The biochemical, physiological, and ecological consequences of contaminants to marine organisms and ecosystems – The biogeochemistry of naturally occurring and anthropogenic substances – Models that describe and predict the above processes – Monitoring studies, to the extent that their results provide new information on functional processes – Methodological papers describing improved quantitative techniques for the marine sciences.