Microplastics in vulnerable catfish: baseline data from northern Patagonia’s Genidens barbus

Microplastic in fish – A global synthesis

AI summary · Read the abstract

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.

Microplastic Accumulation in Freshwater Fish: Distribution, Sources, and Human Health Implications

Biochemical responses and ingestion of microplastics by native fishes in the Atlantic Forest, southern Brazil

AI summary

Researchers assessed fish health along a contamination gradient in Brazil's Atlantic Forest and found that microplastic accumulation was highest in carnivorous fish at impacted midstream sites, while biochemical stress markers were elevated even in upstream areas considered relatively pristine, underscoring the need for ongoing biomonitoring.

Microplastics in Juvenile Commercial Fish from an Estuarine Environment

AI summary · Read the abstract

Juvenile commercial fish from an estuarine environment were found to have ingested microplastics, demonstrating that plastic contamination affects fish at early life stages in transitional coastal ecosystems rather than only in open ocean habitats. Since estuaries serve as nurseries for many commercially important species, microplastic ingestion by juveniles threatens both fish population health and the safety of seafood reaching consumers.

Evaluation of Microplastic Pollution in Gills of Freshwater Fish in a Neotropical Hydrographic Basin, Brazil

AI summary · Read the abstract

Analysis of gill tissue from 98 freshwater fish across eight species in Brazil's Sorocaba River basin found microplastics in every individual, with fibers comprising 74% of the 385 particles detected and highest contamination in the most disturbed river. The universal gill contamination across species demonstrates that freshwater fish in human-impacted watersheds serve as a direct route for microplastic entry into aquatic food webs and ultimately human diets.