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Microplastic pollution in the gastrointestinal tract of giant river catfish Sperata seenghala (Sykes, 1839) from the Meghna River, Bangladesh

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Abstract

Freshwater rivers are considered the major route for microplastics (MPs), yet limited studies have been reported on MPs in freshwater river fish, especially in Bangladesh. This research reveals the intake of MPs by the giant river catfish Sperata seenghala, collected from the Meghna River, which is the only outlet of the Ganges-Brahmaputra River. Three locations, namely, Chandpur Sadar, Bhola Sadar, and Char Fasson, along the Meghna River, were selected in order to investigate the gastrointestinal tracts (GIT) of the fish. Ninety percent (n=27) of fish (n=30) were contaminated, with fragment-shaped MPs (65%) as the most abundant among the four types. A total of 179 MP particles were detected using micro-Fourier transformed infrared spectroscopy (μ-FTIR), with an average of 5.96 ± 1.32 MP particles per fish. Among the four size groups, the highest proportion of MPs (54%) occurred in the 45–100 μm group; the dominant color among the seven color groups was white (30%). The highest quantity of MPs was found in the relatively densely populated Chandpur Sadar region. Polypropylene-polyethylene copolymer (PP-PE, 23%) was proportionally dominant among the 15 types. No significant relationship was found between the total number of observed MPs and the GIT weight. This study will help us to understand MP pollution in S. seenghala that may transmit to the human body through the food chain.

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Data sets used for this research will be available from the corresponding author on logical request.

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Funding

This research was partially supported by the Heiwa Nakajima Foundation.

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Authors and Affiliations

  1. Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo, 108-8477, Japan

    Shaikh Tareq Arafat, Hiraku Tanoiri, Masashi Yokota, Haruka Nakano, Hisayuki Arakawa, Takeshi Terahara & Takeshi Kobayashi

  2. Fisheries and Marine Resource Technology Discipline, Khulna University, Sher-E-Bangla Road, Khulna, 9208, Bangladesh

    Shaikh Tareq Arafat

  3. Center for Ocean Plastic Studies (COPS), Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka, 816-8580, Japan

    Haruka Nakano

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  1. Shaikh Tareq Arafat
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Shaikh Tareq Arafat and Takeshi Kobayashi contributed to the study design and conceptualization. Material preparation, reviewing literature, sample collection, data assimilation, and data analysis were performed by Shaikh Tareq Arafat, Hiraku Tanoiri, Masashi Yokota, Haruka Nakano, Hisayuki Arakawa, Takeshi Terahara, and Takeshi Kobayashi. The first draft of the manuscript was written by Shaikh Tareq Arafat, Takeshi Terahara, and Takeshi Kobayashi, and all authors commented on the previous versions of the manuscript. All authors read and approved the final manuscript.

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Arafat, .T., Tanoiri, H., Yokota, M. et al. Microplastic pollution in the gastrointestinal tract of giant river catfish Sperata seenghala (Sykes, 1839) from the Meghna River, Bangladesh. Environ Sci Pollut Res 30, 89627–89637 (2023). https://doi.org/10.1007/s11356-023-28750-z

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