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61,005 resultsShowing papers similar to Plastic ingestion by fishing cats suggests trophic transfer in urban wetlands
ClearIngestion of Unusual Items by Wetland Birds in Urban Landscapes
Researchers surveyed regurgitated pellets from colonial wetland birds in two Indian cities, finding that over half of pellets in Coimbatore contained rubber bands, rubber balloons, and small plastic debris, demonstrating widespread ingestion of anthropogenic litter by urban birds.
Urban waterbirds shifting microplastics
Researchers found microplastics in the feces of two urban waterbird species in Kerala, India, with polyethylene, polypropylene, and polystyrene being the most common types. Both juvenile and adult birds were affected equally, suggesting that waterbirds can transport microplastics through ecosystems and serve as indicators of local plastic waste levels in freshwater environments.
Microplastic contamination in threatened wild felids of India: Understanding environmental uptake, feeding implications, and associated risks
Researchers analyzed fecal samples from fishing cats and jungle cats in the Gangetic Estuary of India—the first global report of MPs in jungle cat—finding 10.5 and 12.6 MP/g dry weight respectively, with fibers and ethylene vinyl alcohol or polyethylene as dominant types. Risk assessment placed fishing cat MPs in the danger category (Group IV), highlighting wild felids as MP-contaminated sentinels of terrestrial ecosystem pollution.
Microplastics Trophic Transfer in Seafood Varieties Caught from the Coastal Waters off Negombo
This study examined microplastic trophic transfer among five commercially important seafood species caught from coastal waters off Negombo, Sri Lanka, analyzing tissues to trace how plastics move through the food web. Results showed microplastics were present across trophic levels, with contamination patterns differing by species and tissue type.
Investigation of Microplastic in Pellets from the Selected Piscivorous Bird Along the Wetlands of Coimbatore City in Tamil Nadu State of India
Researchers examined regurgitated pellets from Common Kingfishers along Indian wetlands and detected polyethylene and polypropylene microplastic fibers in 26% of pellets, providing the first evidence of microplastic ingestion by this piscivorous bird species in southern India and highlighting contamination within freshwater food webs.
Trophic transfer of microplastics in the aquatic ecosystem of Sundarbans mangrove forest, Bangladesh
Researchers sampled organisms across four trophic levels in the aquatic ecosystem of the Sundarbans mangrove forest in Bangladesh, finding microplastic abundance increased with trophic level from an average of 0.56 items per primary consumer to 4.17 items per quaternary consumer. The positive correlation between microplastic abundance and trophic level confirmed trophic transfer across the food web.
Terrestrial wildlife as indicators of microplastic pollution in western Thailand
Researchers found microplastics in 92% of terrestrial wildlife examined in western Thailand, including snakes, birds, lizards, and amphibians both inside and outside protected areas. Fibers were the most common type, making up 77% of all particles found. This study demonstrates that microplastic pollution has spread throughout land-based food webs, even in protected natural areas, suggesting that virtually all wildlife is now exposed.
Microplastics in fecal samples of mammalian terrestrial wildlife in Hong Kong
Researchers analyzed fecal samples from seven mammalian wildlife species in Hong Kong country parks to assess microplastic ingestion. All species tested positive for microplastics, with fiber morphotypes dominating, suggesting that urban wildlife is routinely ingesting plastic particles.
Abundance and characteristics of microplastics in major urban wetlands of Dhaka, Bangladesh
Microplastics were found in water, sediment, and fish from three major urban lakes in Dhaka, Bangladesh, with concentrations ranging from 0 to 9 items per liter in water samples. Fibers were the most common type across all matrices, pointing to textile washing and wastewater discharge as key local sources.
Microplastics contamination in terrestrial wildlife: the study in carcasses and feces of vertebrate species in western Thailand
Researchers examined microplastic accumulation in terrestrial wildlife carcasses and fecal samples from inside and outside protected areas in western Thailand. Microplastics were detected in multiple species regardless of protected status, suggesting wide environmental distribution.
Assessment and quantification of microplastic contamination in fishes with different food habits from Beel wetlands
Researchers examined microplastic contamination in fish from freshwater wetlands in India, finding particles in the digestive tracts of all 90 fish sampled across different feeding types. Carnivorous fish accumulated the most microplastics, followed by omnivores and then herbivores, suggesting trophic transfer plays a role. The most common particles were fibers in the 100 to 500 micrometer size range, with polyethylene and nylon as the dominant polymer types.
Manifestation of Microplastics in Cat Chow under Microscopic Examination
Researchers examined 50 cat food samples from Thailand — 25 dry and 25 wet — using microscopy to detect the presence of synthetic microplastics in commercial cat chow, raising concerns about microplastic ingestion by pets and potential pathways of environmental plastic contamination through pet food consumption.
Abundance and Distribution of Microplastics in Fish by Trophic Level in Kupang Bay, Indonesia
Researchers surveyed microplastic abundance in fish from Kupang Bay, Indonesia across herbivore and carnivore trophic levels and multiple organs (GIT, gills, muscle), finding carnivores accumulated more microplastics than herbivores and gills showed the highest concentrations.
Migration characteristics of microplastics based on source-sink investigation in a typical urban wetland
Researchers investigated microplastic migration in a typical urban wetland by examining sources and sinks including surface water, sediment, and agricultural waste, revealing how wetlands serve as transitional systems channeling urban microplastic pollution into freshwater environments.
Food ecology and presence of microplastic in the stomach content of neotropical fish in an urban river of the upper Paraná River Basin
Microplastics were found in the stomachs of multiple fish species in an urban Brazilian river, with ingestion rates linked to each species' feeding ecology. The findings confirm that microplastics have entered the freshwater food chain, raising concern about contamination reaching people who eat these fish.
Widespread microplastic ingestion by fish assemblages in tropical estuaries subjected to anthropogenic pressures
A survey of 2,233 fish from 69 species across two tropical Brazilian estuaries found microplastics in 9% of individuals, with ingestion rates linked to feeding guild, habitat use, and proximity to urban areas. The study demonstrates that microplastic ingestion is widespread even in tropical systems and is shaped by ecology rather than occurring at random.
Microplastics occurrence in water, sediment and edible small indigenous fish species in seasonal freshwater wetland ecosystems of Bangladesh
Researchers found microplastics in the guts, gills, and muscle tissue of three commonly eaten fish species from seasonal wetlands in Bangladesh. Dried fish contained more microplastics than fresh fish, suggesting that the drying process concentrates plastic particles. Since these small fish are a dietary staple for local communities and are often eaten whole, this represents a direct pathway for microplastic exposure in human diets.
Accumulation, tissue distribution, health hazard of microplastics in a commercially important cat fish, Silonia silondia from a tropical large-scale estuary
Researchers found microplastics in the digestive tract, gills, and edible muscle tissue of a commercially important catfish species from a major tropical estuary. The most common types were PET, polyethylene, and polypropylene fibers likely originating from fishing nets and sewage. Since these microplastics were found in the muscle tissue that people eat, the study raises direct concerns about human microplastic exposure through seafood consumption.
Species-specific accumulation of microplastics in different bird species from South China: A comprehensive analysis
Across 24 bird species in South China, insectivorous birds accumulated significantly more small microplastics (under 0.1 mm) than other feeding guilds, while piscivorous birds accumulated more large microplastics (over 1 mm). Diet source was a stronger predictor of microplastic contamination than trophic level or body weight, with polypropylene and PET as the dominant polymer types found.
The influences of spatial-temporal variability and ecological drivers on microplastic in marine fish in Hong Kong
Researchers found that over 57% of marine fish in Hong Kong waters contained microplastics, with higher abundance in fish from more polluted western waters during the wet season, and that omnivorous fish ingested significantly more microplastics than carnivorous fish regardless of collection location or season.
Plastic intake does not depend on fish eating habits: Identification of microplastics in the stomach contents of fish on an urban beach in Brazil
Researchers analyzed microplastic content in the stomachs of seven fish species from an urban beach in Brazil and found that trophic guild (carnivore, omnivore, herbivore) did not predict microplastic ingestion rates, suggesting that incidental ingestion during feeding is widespread regardless of diet type.
Microplastics in fecal samples of mammalian terrestrial wildlife in Hong Kong
Researchers assessed microplastic presence and abundance in fecal samples from mammalian wildlife in Hong Kong country parks, examining how animals living near human-modified habitats accumulate plastic particles. Microplastics were detected in wildlife feces, with types reflecting human-associated plastic waste from nearby populated areas.
Microplastics contamination in terrestrial wildlife: the study in carcasses and feces of vertebrate species in western Thailand
Researchers examined microplastic accumulation in terrestrial wildlife carcasses and fecal samples from protected and non-protected areas of western Thailand, finding contamination in multiple species. The presence of microplastics in wildlife from protected areas highlights the inability of conservation boundaries to shield fauna from pervasive plastic pollution.
Distribution of Microplastics in Coastal Waters and Their Implications for the Marine Food Chain
Researchers sampled surface water, sediments, and marine organisms from urban, industrial, and conservation coastal zones in Indonesia to assess microplastic distribution and food chain implications. Industrial zones had the highest microplastic concentrations, and filter feeders accumulated more particles than fin fish, indicating distinct exposure pathways through the marine food web.