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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 found microplastics in 15 commercial fish species from markets in the Peruvian Amazon, detecting 2,337 particles across 61 specimens — among the first reports of microplastic contamination in fish from the Amazon basin.
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.
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.
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.
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.
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.
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.
Worldwide contamination of fish with microplastics: A brief global overview
A literature review from March 2019 to March 2020 synthesized worldwide data on microplastic contamination in fish, finding that a median of 60% of fish from 198 species across 24 countries contained microplastics in their organs. Carnivorous species ingested more microplastics than herbivores, consistent with trophic transfer and bioaccumulation through food webs.
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.
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.
Habitat Integrity and Microplastic Contamination in Amazonian Streams: Assessment of Water, Sediment, and Fish and Identification of Predominant Polymers
Researchers assessed microplastic contamination in Amazonian streams by sampling water, sediment, and fish, and characterised predominant polymer types, finding that contamination was widespread across all environmental compartments regardless of habitat integrity, suggesting that even well-preserved stream habitats are not protected from microplastic pollution.
The pervasiveness of microplastic contamination in the gastrointestinal tract of fish from the western coast of Bangladesh
Researchers found microplastics in every individual fish examined from the western coast of Bangladesh, with an average of 7.1 particles per specimen, and demersal species accumulating more microplastics than pelagic species near the world's largest mangrove ecosystem.
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.
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.
Assessment on Microplastics Contamination in Freshwater Fish: a Case Study of the Ubolratana Reservoir, Thailand
Researchers examined microplastic contamination in freshwater fish from the Ubolratana Reservoir, Thailand, finding that 96.4% of 14 examined species had ingested microplastics, and assessed abundance, size, colour, and shape of particles from stomach and intestinal contents across sampling stations.
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.
MPs in fish species
Researchers compiled a global dataset of microplastic-contaminated fish species spanning thousands of species across six continents, integrating taxonomic, spatial, and ecological dimensions to provide a comprehensive resource for understanding the scope of microplastic ingestion in fish.
MPs in fish species
Researchers compiled a global dataset of microplastic-contaminated fish species spanning thousands of species across six continents, integrating taxonomic, spatial, and ecological dimensions to provide a comprehensive resource for understanding the scope of microplastic ingestion in fish.
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.
Baseline biomonitoring of microplastic pollution in freshwater fish from the Chishui River, China: Insights into accumulation patterns and influencing factors
This first-ever biomonitoring study of the Chishui River in China found microplastics in all 31 fish species examined, with an average of about 240 particles per gram in both gills and intestines. Bottom-dwelling fish accumulated significantly more microplastics than those swimming near the surface, and the fish contained twice as many plastic polymer types as were found in the surrounding water and sediment. The widespread contamination of freshwater fish with microplastics raises concerns about human exposure through fish consumption.
Microplásticos en el tracto digestivo de dos especies comerciales de peces marinos del Puerto de Chancay, Lima, Perú
Researchers found microplastics in 100% of digestive tracts sampled from two commercially important Peruvian marine fish species across three seasonal periods, with polyethylene and polypropylene fibers and fragments (1-5 mm) predominating in black and blue colors at concentrations of approximately 4-12 MPs per fish.
Occurrence, distribution and characteristics of microplastics in gastrointestinal tract and gills of commercial marine fish from Malaysia
Researchers examined 158 commercial marine fish from 16 species in Malaysia and found microplastics in the gastrointestinal tracts and gills of all species studied. Fibers were the most common microplastic type, and the contamination levels varied between sampling locations. The findings add to growing evidence that microplastics are widespread in commercially important fish species, raising questions about the potential for human exposure through seafood consumption.
Occurrence of microplastics in Fish from Mendoza River: First Insights into Plastic Pollution in the Central Andes, Argentina
Researchers found microplastics in the gastrointestinal tracts of all three fish species examined from Argentina's Mendoza River in the Central Andes, with fibers comprising 85% of particles, marking the first evidence of microplastic pollution in this high-altitude freshwater system.
Ingestão e efeitos morfofisiológicos dos microplásticos em espécies de peixes da Amazônia Central
This Brazilian thesis investigates microplastic ingestion and its effects on fish from the Amazon basin, one of the world's most biodiverse freshwater systems. Given that aquatic organisms in even remote areas are exposed to microplastics, the research highlights risks to Amazon fish diversity and the potential for microplastics to disrupt aquatic food webs in previously pristine ecosystems.