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Seasonal and Trophic Variation of Microplastic Ingestion in Estuarine Fish from a Port-influenced Amazonian Ecosystem
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Scientists studied fish from estuaries (where rivers meet the sea) near a busy port in Brazil's Amazon region to see how much microplastic — tiny plastic particles — they had eaten, and whether this changed by season or by what the fish ate. Since we eat fish, and fish that eat other contaminated fish may build up even more plastic in their bodies, this kind of tracking helps researchers understand how microplastics move through the food chain and potentially onto our plates. This particular paper is a data release, so it focuses on sharing the measurements collected rather than drawing final conclusions about health risks.
The dataset associated with this study contains the raw and processed analytical data obtained from fish specimens collected in estuarine environments of São Luís Island, Maranhão, Brazil. The repository includes biometric measurements, seasonal sampling information and microplastic occurrence data. Data files are provided in Microsoft Excel format and are organized according to sampling period, study area, and analytical category to facilitate reproducibility and transparency of the results.
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Seasonal and Trophic Variation of Microplastic Ingestion in Estuarine Fish from a Port-influenced Amazonian Ecosystem
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Scientists studied fish from estuaries (where rivers meet the ocean) near a busy port in the Brazilian Amazon and found microplastics in their bodies, with the amount varying by season and by what the fish ate. Since these fish are part of the local food supply, this matters because eating contaminated seafood is one way tiny plastic particles can end up in our own bodies. This particular dataset release focuses on sharing the raw measurements and findings so other researchers can verify and build on the work, rather than presenting new conclusions about health risks.
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Researchers documented the first evidence of microplastic ingestion by fish in the Amazon River estuary, finding plastic particles — predominantly polyamide and polyethylene pellets — in 30% of 189 specimens across 14 species, with larger fish containing more particles, indicating widespread contamination extending into one of the world's most biodiverse river systems.
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