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Worldwide contamination of fish with microplastics: A brief global overview
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A literature review from March 2019 to March 2020 synthesized worldwide data on microplastic contamination in fish, finding that a median of 60% of fish from 198 species across 24 countries contained microplastics in their organs. Carnivorous species ingested more microplastics than herbivores, consistent with trophic transfer and bioaccumulation through food webs.
Widespread contamination of microplastics may lead to internalization in fish. This literature review from March 2019 to March 2020 details that a median of 60% of fish, belonging to 198 species captured in 24 countries, contain microplastics in their organs. Carnivores species ingested more microplastics than omnivores. Only 14% of fish were from aquaculture. Most studies focused on digestive systems, with presence in other organs currently being insufficiently assessed. Based on this assessment, knowledge gaps that should be addressed in future studies were identified.
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This review summarizes global research on microplastic ingestion by fish and finds that contamination is widespread across aquatic ecosystems, with fibers and fragments being the most commonly ingested shapes. The study highlights that fish higher on the food chain tend to accumulate more microplastics, which matters for human health since many of these species are commonly consumed as seafood.
Geographical and ecological factors affect microplastic body burden in marine fish at global scale
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This systematic review analyzed microplastic levels found in marine fish worldwide and identified key factors driving contamination. Fish from areas with heavy human activity contained more microplastics, and since many of these species are eaten by people, this contamination represents a direct route of human exposure through seafood.
Occurrence of microplastics (MPs) in the gastrointestinal tract of fishes: A global systematic review and meta-analysis and meta-regression
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Fish globally averaged 2.76 microplastic particles per gastrointestinal tract, with fish from enclosed water bodies (lakes, estuaries) containing 2-4x more than those from open oceans, and fish from low-income economies harboring 5.5x more microplastics than those from high-income economies.
MPs in fish species
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Researchers compiled a global dataset of microplastic-contaminated fish species spanning thousands of species across six continents, integrating taxonomic, spatial, and ecological dimensions to provide a comprehensive resource for understanding the scope of microplastic ingestion in fish.
MPs in fish species
AI summary Read the abstract
Researchers compiled a global dataset of microplastic-contaminated fish species spanning thousands of species across six continents, integrating taxonomic, spatial, and ecological dimensions to provide a comprehensive resource for understanding the scope of microplastic ingestion in fish.
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