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Microplastics in Fish: An Emerging Environmental Challenge
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This review synthesized evidence on microplastic bioavailability and accumulation in fish species globally, examining ingestion routes, tissue distribution, and potential health effects on both fish and human consumers. As a major dietary protein source for billions of people, fish contaminated with microplastics represent a direct and quantifiable pathway for human exposure to plastic particles and their adsorbed chemical pollutants.
The widespread presence of microplastics (MPs) in aquatic environments has raised significant concerns about their bioavailability and potential risks to aquatic biota. Fish, a crucial source of animal protein for millions worldwide, are increasingly exposed to MPs,...
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Microplastic in fish – A global synthesis
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A global synthesis of microplastic ingestion data from marine, freshwater, and estuarine fish found that 49% of sampled fish worldwide had ingested plastic, averaging 3.5 pieces per fish, with freshwater fish and those from aquaculture sources showing higher ingestion rates than wild marine fish. This comprehensive analysis reveals that microplastic contamination of fish — a primary human protein source globally — is now the rule rather than the exception, underscoring urgent risks to food safety.
Current State of Research on the Prevalence of Microplastics in Aquatic Fish and Their Impact on Health
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Researchers reviewed microplastic contamination in fish across all seven continents, finding marine fish were studied 2.6 times more than freshwater species, and that microplastics trigger oxidative stress, alter biochemical pathways, and accumulate through biotransformation in fish tissues globally.
Microplastics: An Emerging Threat to the Aquatic Ecosystem
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Researchers reviewed the accumulation of microplastics across aquatic ecosystems worldwide, finding that plastic particles have reached even remote water bodies and pose threats to aquatic organisms through ingestion, physical harm, and the transport of toxic chemical pollutants.
Microplastic Accumulation in Freshwater Fish: Distribution, Sources, and Human Health Implications
Impact of Plastic Waste Ingestion by Fish
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This review synthesized experimental evidence on how microplastic ingestion affects fish physiology and behavior, finding that plastics act as vectors for toxic chemicals including mercury, cause oxidative stress, and transfer contaminants up the food chain to human consumers. Because microplastics bioaccumulate through trophic levels, populations relying heavily on seafood—particularly from coastal regions—face compounded exposure risks that extend well beyond the plastic particles themselves.
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