Pelagic shark intestine as a potential temporary sink for plastic and non-plastic particles.

IF 3.2 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Marine environmental research Pub Date : 2025-02-01 Epub Date: 2025-01-20 DOI:10.1016/j.marenvres.2025.106971

Chenxuan Du, Beibei Shi, Jiahui Ji, Yi Gong, Jiangfeng Zhu, Xinjun Chen, Weixin Zhu

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Abstract

Highly migratory pelagic sharks have the potential to serve as carriers of particle contamination in a vast three-dimensional space. We investigate the occurrence, abundance and characteristics of plastic and non-plastic particles in the scroll intestine of the blue shark (Prionace glauca), one of the most abundant pelagic shark species worldwide. We detected both plastic and non-plastic particles in all sections of the intestine, with the posterior region exhibiting the highest concentration. We estimated that individual intestine may contained 11.21 ± 9.62 and 48.00 ± 23.90 plastic or non-plastic particles, respectively. Fibers dominated particle morphology (95.58%), primarily composed of plastic polymers (polyester and polyethylene terephthalate) (plastic) and non-plastic material (rayon and cotton). Given their size range (102.08-8113.54 μm), these particles are likely to be released into the water column through excretion. The intestine of P. glauca may act as a temporary particle sink, a phenomenon potentially common among pelagic sharks worldwide. This study provides new insights for the role of highly migratory fish species in the transport and distribution dynamics of marine particle contamination.

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远洋鲨鱼肠道作为塑料和非塑料颗粒的潜在临时水槽。

高度洄游的远洋鲨鱼有可能在广阔的三维空间中充当颗粒污染的载体。我们研究了蓝鲨（Prionace glauca）卷肠中塑料和非塑料颗粒的发生、丰度和特征，蓝鲨是世界上最丰富的远洋鲨鱼物种之一。我们在肠道的所有部分都检测到塑料和非塑料颗粒，其中后部区域的浓度最高。我们估计单个肠道可能分别含有11.21±9.62和48.00±23.90个塑料或非塑料颗粒。纤维占主导的颗粒形态（95.58%），主要由塑料聚合物（聚酯和聚对苯二甲酸乙二醇酯）（塑料）和非塑料材料（人造丝和棉花）组成。考虑到这些颗粒的粒径范围（102.08-8113.54 μm），它们很可能通过排泄物释放到水柱中。青光假鳗的肠道可能作为一个暂时的颗粒汇，这一现象在世界各地的远洋鲨鱼中可能很常见。该研究为高度洄游鱼类在海洋颗粒污染的运输和分布动力学中的作用提供了新的见解。

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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.