Investigation of microplastic contamination in the gastrointestinal tract of fish: A comparative study of various freshwater species

IF 3 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY

Physics and Chemistry of the Earth Pub Date : 2024-10-09 DOI:10.1016/j.pce.2024.103760

Kalpana Patidar , Abdullah H. Alluhayb , Alaa M. Younis , U.C. Dumka , Balram Ambade

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Abstract

The aqueous environment has been reported to be seriously threatened by the pollution of microplastics (MPs), which has been confirmed in numerous studies affecting various aquatic habitats. Despite this, few investigations exist on MP contamination in fish of specific regions. Thus, the current study aims to determine MP concentrations in the fish species of the Chhota Nagpur zone of eastern India. From August to September 2023, fish samples were collected from 10 km distance between two locations of Subarnarekha and Kharkai river banks through fishermen. Microplastics were found in the gastrointestinal tract of 45 fish of 8 species out of 48 samples. Of these species, six species were secondary consumers, while the remaining two were primary consumers. The average amount of microplastics consumed by each fish (n = 48) was 3.0 ± 1.8. A total of 144 microplastics were found in collected samples of fish species. Among the analysed sample of MPs, 69.4% were fibers, films were (22.3%), and (8.3%) were fragments. The least contaminated species was T. ilisha (0.8 ± 0.7 particles/ind.), while L. rohita had the highest microplastic contamination (4.5 ± 1.7 particles/ind.). The present study found a negative correlation of - 0.83 between MP consumption and the mean body weight of fish. Similarly, a negative correlation of - 0.5 was found between the length of fish and MP intake. Polyamide (nylon), polypropylene, polyvinyl chloride, polycarbonate, polyethylene terephthalate, and polyethylene polymers were found. The size of MPs ranged from 45 to 355 μm and mainly were fibers. They were also predominantly blue and black. Polyamide and polyvinyl chloride were the common MP types in every specimen. The possible sources of MPs were fishing nets, ropes, and packaging material. This investigation points to MP contamination in aquatic ecosystems and particular species. It provides advanced knowledge of MP pollution, sources, and effects on regional ecosystems and public health.

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鱼类胃肠道微塑料污染调查：各种淡水物种的比较研究

据报道，水环境受到微塑料（MPs）污染的严重威胁，影响各种水生生境的大量研究证实了这一点。尽管如此，有关特定地区鱼类体内微塑料污染的调查却寥寥无几。因此，本研究旨在确定印度东部乔塔-那格浦尔地区鱼类体内的微塑料浓度。从 2023 年 8 月到 9 月，通过渔民从 Subarnarekha 和 Kharkai 河岸两个地点之间 10 公里处采集了鱼类样本。在 48 个样本中，有 8 个物种的 45 种鱼的胃肠道中发现了微塑料。在这些鱼类中，6 种为次级消费者，其余 2 种为初级消费者。每条鱼（n = 48）摄入的微塑料平均量为 3.0 ± 1.8。在收集到的鱼类样本中，共发现了 144 种微塑料。在分析的微塑料样本中，纤维占 69.4%，薄膜占 22.3%，碎片占 8.3%。受污染最少的鱼种是伊利沙鱼（0.8 ± 0.7 微粒/英寸），而罗汉鱼的微塑料污染最高（4.5 ± 1.7 微粒/英寸）。本研究发现，MP 消费量与鱼类的平均体重呈负相关，相关系数为 -0.83。同样，鱼体长度与 MP 摄入量之间的负相关为 -0.5。研究还发现了聚酰胺（尼龙）、聚丙烯、聚氯乙烯、聚碳酸酯、聚对苯二甲酸乙二酯和聚乙烯聚合物。中压物质的大小从 45 微米到 355 微米不等，主要是纤维。它们还主要呈蓝色和黑色。聚酰胺和聚氯乙烯是每个样本中常见的 MP 类型。MP 的可能来源是渔网、绳索和包装材料。这项调查指出了水生生态系统和特定物种中的 MP 污染。它提供了有关 MP 污染、来源以及对区域生态系统和公众健康影响的先进知识。

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来源期刊

Physics and Chemistry of the Earth 地学-地球科学综合

CiteScore

5.40

自引率

2.70%

发文量

176

审稿时长

31.6 weeks

期刊介绍： Physics and Chemistry of the Earth is an international interdisciplinary journal for the rapid publication of collections of refereed communications in separate thematic issues, either stemming from scientific meetings, or, especially compiled for the occasion. There is no restriction on the length of articles published in the journal. Physics and Chemistry of the Earth incorporates the separate Parts A, B and C which existed until the end of 2001. Please note: the Editors are unable to consider submissions that are not invited or linked to a thematic issue. Please do not submit unsolicited papers. The journal covers the following subject areas: -Solid Earth and Geodesy: (geology, geochemistry, tectonophysics, seismology, volcanology, palaeomagnetism and rock magnetism, electromagnetism and potential fields, marine and environmental geosciences as well as geodesy). -Hydrology, Oceans and Atmosphere: (hydrology and water resources research, engineering and management, oceanography and oceanic chemistry, shelf, sea, lake and river sciences, meteorology and atmospheric sciences incl. chemistry as well as climatology and glaciology). -Solar-Terrestrial and Planetary Science: (solar, heliospheric and solar-planetary sciences, geology, geophysics and atmospheric sciences of planets, satellites and small bodies as well as cosmochemistry and exobiology).