Microplastic pollution of commercial fishes from coastal and offshore waters, Japan

Yagi, Mitsuharu; Kobayashi, Tsunefumi; Maruyama, Yutaka; Hoshina, Sota; Masumi, Satoshi; Aizawa, Itaru; Uchida, Jun; Kinoshita, T; Yamawaki, Nobuhiro; Aoshima, Takashi; Morii, Yasuhiro; Shimizu, Kenichi

doi:10.1101/2021.10.20.465208

Cited by 2 publications

(1 citation statement)

References 68 publications

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“…MPs. Hence, MPs in the ponds needed more attention as these are ingested by aquatic organisms (Xu et al, 2020;Wootton et al, 2021;Zhang et al, 2021;Yagi et al, 2022). Regardless, further investigations regarding MP pollution in the ponds are essential, which certainly might be a source or path of MPs in the human body and terrestrial environments in future.…”

Section: Abundance and Distribution Of Mps In Selected Ponds' Sedimen...mentioning

confidence: 99%

Microplastics in fish culture ponds: abundance, characterization, and contamination risk assessment

Hossain,

Banik,

Nur

et al. 2023

Front. Environ. Sci.

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Microplastics (MPs), an emerging pollutant, have drawn attention on a global scale and have been found in various ecosystems. Nevertheless, there is currently a lack of information regarding the contamination levels of MPs in aquaculture ponds worldwide. In this study, sediment and water samples were collected from five types of fish ponds, namely, homestead ponds (S1), commercial aquaculture ponds (S2), ponds near a residential area (S3), ponds near a small-scale industrial area (S4), and ponds near a large-scale industrial area (S5), to identify, characterize, and assess the contamination risk of MPs. Stereomicroscopic and Fourier-transform infrared (FTIR) spectroscopy analyses revealed that the MPs ranged from 3.33 item/kg to 136.67 item/kg in sediment and 16.6 item/L to 100 item/L in water samples. Overall, the abundance of MPs was extremely high in S5, followed by S4, S2, S3, and S1, which clearly showed the levels increased with the intensity of human activities. The levels of MPs in both sediment and water showed significant differences (p < 0.05) within and between ponds, as well as in comparison between water and sediment samples. The concentrations of MPs surpassed those noted in aquaculture ponds of different nations. The majority of MPs consisted of fragments and films in both sediment and water samples. Furthermore, transparent and white-colored MPs were the prevailing types found in the sediment and water samples of the aquaculture ponds. Around 34% of MPs present in sediment and 30% in water fell within the size range of 0.5–1 mm. Polymers like polypropylene (PP), polyethylene (PE), and polyethylene terephthalate (PET) were prevalent in both sediment and water samples. The contamination factor reached exceptionally elevated levels (>30 for sediment and >3 for water), signifying that the sampled regions, particularly S4 and S5 (industrial sites), displayed significant MP contamination. Moreover, the pollution load index values of the sediment (3.0 ± 1.5) and water samples (1.5 ± 0.3) also indicated the areas were contaminated with MPs. Multivariate analysis indicated that the elevated concentration of MPs in the studied region could be attributed to the discharge of effluents and other human-induced activities.

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Section: Abundance and Distribution Of Mps In Selected Ponds' Sedimen...mentioning

confidence: 99%

Microplastics in fish culture ponds: abundance, characterization, and contamination risk assessment

Hossain,

Banik,

Nur

et al. 2023

Front. Environ. Sci.

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Microplastics in Different Tissues of a Commonly Consumed Fish, Scomberomorus guttatus, from a Large Subtropical Estuary: Accumulation, Characterization, and Contamination Assessment

Hossain,

Pingki,

Azad

et al. 2023

Biology

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Microplastics (MPs) ingestion by fish signifies a worldwide threat to human health but limited research has examined their existence within the consumable portions (muscle) of fish. Thus, this study was undertaken to unveil the prevalence, characterization, and contamination extent of MPs across various body tissues, including the muscle of the king mackerel (S. guttatus) from the lower Meghna estuary in Bangladesh—a pioneering investigation in this region. In our analysis, we identified a total of 487 MPs, with an average abundance of 48.7 ± 20.3 MPs/individual. These MPs were distributed across different tissues, with respective concentrations of 0.84 ± 0.45 items/g in the digestive tract, 2.56 ± 0.73 items/g in the gills, and 0.3 ± 1.72 items/g in the muscle tissue. The observed variations among these tissue types were statistically significant (p < 0.05). Moreover, a significant positive correlation indicated that fish with higher weight had higher MPs in their gills and DT (digestive tract). The majority were <0.5 mm in size (97.74%) and exhibited a fiber-like shape (97.74%), with a notable prevalence of transparent (25.87%) and a pink coloration (27.92%). Remarkably, the majority of MPs were discovered within the size range of <0.5–1 mm (100%), particularly in the muscle tissue, signifying a substantial transfer of MPs into the human diet. Besides, we discovered only three polymer types of microplastics which could be attributed to the extensive use of food packaging, plastic containers, wrapping plastics, residential garbage, and plastic pipes that end up in the aquatic environment via river discharges. The contamination factor (CF) values of fish muscle (5.75) and the digestive tract (5.50) indicated that these fish organs were considerably contaminated (3 < CF < 6) with MPs. The pollution index of MPs (PLI > 1) indicated a high contamination level for MPs pollution of S. guttatus in the lower Meghna River estuary.

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Microplastic pollution of commercial fishes from coastal and offshore waters, Japan

Cited by 2 publications

References 68 publications

Microplastics in fish culture ponds: abundance, characterization, and contamination risk assessment

Microplastics in fish culture ponds: abundance, characterization, and contamination risk assessment

Microplastics in Different Tissues of a Commonly Consumed Fish, Scomberomorus guttatus, from a Large Subtropical Estuary: Accumulation, Characterization, and Contamination Assessment

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