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61,005 resultsShowing papers similar to Microplastic occurrence in fish species from the Iquitos region in Peru, western Amazonia
ClearMicroplastic occurrence in fish species from the Iquitos region in Peru, western Amazonia
Researchers surveyed microplastic contamination in 61 fish from 15 commercial species in the Peruvian Amazon near Iquitos. The study found microplastics in 100% of sampled fish, with an average of 38.3 particles per individual detected across gills and internal organs, demonstrating that microplastic pollution has reached even remote areas of the western Amazon basin.
First evidence of microplastic ingestion by fishes from the Amazon River estuary
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.
Microplastic abundance in three commercial fish from the coast of Lima, Peru
Researchers found microplastics in the stomachs and intestines of three commercially important fish species caught off the coast of Lima, Peru. The results confirm that microplastic ingestion is widespread among fish commonly consumed by humans in South American coastal communities.
Microplastics in fishes in amazon riverine beaches: Influence of feeding mode and distance to urban settlements
Researchers found microplastics in the digestive tracts of 29 fish species from Amazon riverine beaches, with contamination levels influenced by fish feeding mode and distance to urban settlements within a protected area.
Contamination of stream fish by plastic waste in the Brazilian Amazon
Researchers evaluated plastic contamination in small fish from Amazonian headwater streams in Brazil, finding widespread plastic pollution in these understudied tropical freshwater ecosystems and characterizing the shapes, sizes, and abundance of plastic items ingested.
Microplastics in siluriform fish sold in Itacoatiara (AM), Brazil
Researchers in Brazil found that more than 83% of two commercially sold catfish species (Pterygoplichthys pardalis and Hoplosternum littorale) collected from Amazonian floodplains were contaminated with microplastics, averaging about 2.7 particles per fish. The dominant particle types were fibers and fragments, pointing to textile and packaging waste as key sources. Because these fish are widely consumed locally, this study highlights a direct route through which microplastics enter the human diet in the Amazon region.
Occurrence of microplastics in the gastrointestinal tract of Amazonian fish species with different feeding habits
Microplastics were found in the gastrointestinal tracts of multiple Amazonian fish species with different feeding habits from Lake Janauacá and the Anavilhanas Archipelago, with feeding strategy influencing ingestion rates—underscoring widespread microplastic contamination even in remote Amazon basin aquatic ecosystems.
Microplastic contamination in three marine fish species from Peru
Scientists found tiny plastic particles in all three types of fish they tested from Peru's fish markets, including in the muscle tissue that people eat. The plastic pieces were mostly small fragments and fibers in black and blue colors that came from pollution in the ocean. This matters because when people eat contaminated fish, they may also be consuming these microplastics, though more research is needed to understand the health risks.
Occurrence and characterization of microplastic content in the digestive system of riverine fishes
Researchers found microplastics in 93.8% of riverine fish examined, with polystyrene, polyethylene, and nylon being the most common polymer types concentrated near urban and industrial areas, and small particles (0.025-1 mm) predominating across species.
Microplásticos en peces marinos de importancia económica en Lima, Perú
Researchers found microplastics in five economically important fish species from coastal waters near Lima, Peru, including lorna drum, cabinza grunt, and mackerel. The findings are significant for public health because these are commonly eaten fish, and Peru is one of the world's largest fishing nations.
Widespread microplastic ingestion in Colombian Caribbean marine fish: Trophic influence, spatial-temporal trends, and polymer composition
Researchers examined three commercially important fish species from the Colombian Caribbean and found microplastics in over 82% of individuals across both continental and island waters. Fiber and fragment shapes were the most common types, with higher concentrations found in coastal areas and during the wet season. The findings suggest that microplastic ingestion is widespread among Caribbean fish, with potential implications for seafood consumers in the region.
Evaluation of Microplastic Contamination in Commercially Edible Fresh Water and Marine Fishes Bought from Fish Markets, Tiruchirappalli, Tamil Nadu, India
This Indian study examined microplastic contamination in freshwater and marine fish sold in markets in Tamil Nadu, finding plastic particles in multiple commercially important species. People who regularly eat fish from contaminated markets are likely consuming microplastics as part of their diet.
Microplastics in water and fish of commercial interest: Distribution and relation to ecology in the colombians caribbean region, south america
Researchers evaluated microplastic contamination in surface waters and the gastrointestinal tracts of commercially important and invasive fish species along the Colombian Caribbean coast and San Andrés Island, examining the relationship between microplastic distribution and species ecology and geography.
Characterization and enumeration of microplastic pollution in three fish species of the Upper Mississippi River
Researchers found 891 microplastic particles across 281 fish from three species in the Upper Mississippi River, with fibers being the most common type and smaller fish containing proportionally more microplastics than larger ones. This confirms microplastic ingestion is widespread in freshwater fish — not just marine species — and the presence of styrene-isoprene, polyester, and ABS polymers highlights the diverse plastic sources contaminating major river systems.
Microplastic contamination in commercial fish species in southern coastal region of India
Researchers examined 220 commercial fish from the southern coast of India over six months and found microplastic contamination in all samples, with an average of 3.2 to 7.6 particles per fish. The most common types were fibers and fragments, primarily composed of polyethylene, polypropylene, polystyrene, and polyamide. The findings indicate that microplastic contamination in commercially valuable fish species is widespread along the Indian coast, raising concerns about food safety.
Characterization of microplastics in commercially valued Gangetic fishes and its exposure assessment on humans
Researchers characterized microplastics in commercially sold fish from the Ganges River in India, finding plastic contamination across multiple species and providing an initial exposure assessment for human consumers who rely on freshwater fish as a primary protein source.
Large-scale monitoring and risk assessment of microplastics in the Amazon River
Researchers conducted the largest microplastic monitoring study in the Amazon River, sampling 40 sites across 1,500 kilometers. Microplastics were found everywhere, with urban streams near cities showing concentrations up to 1,000 times higher than the main river. This study confirms that even remote freshwater ecosystems like the Amazon are contaminated with microplastics, which could affect the fish and water that local communities depend on.
First Evidence of Microplastic Ingestion by Riverine Fish From the Freshwater of Northwest Peninsular Malaysia
Researchers found microplastics in the guts of multiple fish species from two rivers in northwest Malaysia, with some species averaging nearly 50 microplastic particles per gram of body weight. The dominant particles were fibers and fragments of polyethylene and polypropylene — findings that signal widespread contamination of freshwater food sources and raise concerns about human exposure through fish consumption.
Ingestion of plastic debris by commercially important marine fish in southeast-south Brazil
Scientists visually examined 965 specimens of eight commercially exploited fish species off the southeast-south coast of Brazil for plastic debris ingestion, finding plastic in multiple species across different marine habitats.
Assessment of microplastic contamination in commercially available fishes
Researchers found microplastics in every one of 32 commercially sold fish from markets in Vellore, India, recovering a total of 875 particles from their gills and digestive tracts. Fibers made up 91% of the microplastics, with polyvinyl alcohol and polyethylene being the most common types. Since these are fish commonly eaten by local populations, the findings raise direct concerns about human microplastic exposure through seafood consumption.
Prevalence of microplastics in commonly consumed fish species of the river Old Brahmaputra, Bangladesh
Researchers found microplastics in nearly 59% of edible fish from Bangladesh's Old Brahmaputra river, with polyethylene fibers and pellets dominating, and ingestion rates linked to fish size, feeding behavior, and downstream location.
Abundance, characteristics, and risk assessment of microplastics in indigenous freshwater fishes of India
Researchers examined microplastic contamination in five widely consumed freshwater fish species from India and found plastic particles in all specimens, with fibers being the most dominant type. Evidence of microplastics in edible fish tissue indicates translocation from the gut, suggesting a pathway for human exposure through consumption. Risk assessment showed that while microplastic abundance posed a low quantitative risk, the polymer types identified indicated a high hazard potential for the fish species studied.
Effect of biological and environmental factors on microplastic ingestion of commercial fish species
Researchers analyzed microplastic ingestion in commercially important fish species, evaluating how biological and environmental factors influence ingestion rates across 2,222 individual fish. The study assessed gastrointestinal tract contents to determine the extent and patterns of microplastic contamination. The findings suggest that both species-specific biology and environmental conditions play important roles in determining microplastic ingestion levels in commercial fish.
Microplastic contamination in freshwater fish: first insights from the Mekong River in Nakhon Phanom Province, Thailand
Researchers found microplastics in 100% of 89 fish gastrointestinal tracts sampled from the Mekong River in Thailand, averaging 23.76 items per individual, with fragments being the dominant shape (83%), particles under 100 µm the most common size, and 17 polymer types identified across species.