Presence of Microplastics in Sciades Herzbergii (Bloch, 1794) Captured in Harbor Areas of the Amazon Coast, Maranhão, Brazil

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

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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.

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

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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.

Microplastic contamination in the gills of Macrobrachium amazonicum (Heller, 1862) from the reservoir of the Funil Hydroelectric Power Plant, Minas Gerais, Brazil

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Researchers found thousands of tiny plastic fragments lodged in the gills of freshwater shrimp from a Brazilian reservoir, with larger, more mature shrimp carrying more plastic than younger ones. Since this shrimp species is commonly eaten and economically important, these findings raise concerns about plastic pollution moving up the food chain, potentially onto our own dinner plates.

Ecological and Seasonal Patterns of Microplastic Ingestion in Fish Near a Port Region in the Brazilian Amazon

Impacts of Microplastics on Commercial Fish in the Amazon

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Researchers assessed microplastic contamination in commercial fish species from the Amazon basin, examining ingestion rates and tissue distribution in ecologically and economically important freshwater fish.