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61,005 resultsShowing papers similar to Characterization, distribution, and risk assessment of microplastic in fish and sediment from the longest river of Bangladesh
ClearPrevalence 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, distribution and composition of microplastics in sediment and fish species from an Urban River of Bangladesh
Researchers examined microplastic contamination in both river sediment and fish from the Turag River in Bangladesh, which separates an industrial city from the capital Dhaka. They found microplastics in all sediment and fish gut samples, with fragment-type particles dominating in sediment and fibers most common in fish. The study highlights that urban rivers in densely populated areas can serve as significant conduits of microplastic exposure for both aquatic life and the people who consume river fish.
Abundance, characteristics and variation of microplastics in different freshwater fish species from Bangladesh
Researchers examined 48 freshwater fish from 18 species in Bangladesh and found microplastics in the digestive tracts of over 73% of the fish studied. Fibers were the most common shape, and the plastics were primarily polyethylene and polypropylene-based polymers. Bottom-dwelling fish contained more microplastics than those living higher in the water column, suggesting that contaminated sediments are a significant source of exposure for freshwater species.
Occurrence and risk assessment of microplastics in surface water, sediment, and biota of Surma River, Bangladesh
Researchers conducted the first comprehensive study of microplastic pollution across water, sediment, and aquatic organisms in the Surma River in northeastern Bangladesh. They found microplastics in all three compartments, with fibers being the most common shape in water and biological samples, while fragments dominated in sediments. Pollution risk indices indicated substantial contamination levels, highlighting the need for better plastic waste management in the region.
Pervasiveness of microplastics in the gastrointestinal tract of some selected fish species from Turag River alongside the capital city of Bangladesh
Researchers found microplastics in all three species of fish collected from the Turag River near Dhaka, Bangladesh, with fiber being the dominant type at 89-93% of all particles found. The most common plastics identified were polypropylene, polystyrene, and low-density polyethylene, with the majority of particles smaller than 0.5 mm. Since these freshwater fish are a major protein source for local communities, the contamination raises concerns about microplastic exposure through the food supply in urban areas of developing countries.
Microplastic Pollution in Indigenous Fish From the Padma River, Bangladesh: A Case Study
Researchers examined indigenous fish species from the Padma River in Bangladesh and found microplastics in the gastrointestinal tracts of all species studied, with fibers being the dominant type. The abundance and types of microplastics varied across species, reflecting differences in feeding habits and habitat. The findings highlight the widespread presence of microplastic contamination in an important inland waterway and its potential impact on food security in the region.
Microplastic Ingestion by Fishes from Jamuna River, Bangladesh
Freshwater fish from the Jamuna River in Bangladesh were examined for microplastic ingestion, finding plastics in a high proportion of individuals across multiple species. The study provides early evidence of freshwater microplastic contamination in Bangladesh and highlights the Jamuna River as a significant conduit for plastic pollution.
Characterization and spatial distribution of microplastics in Surma river, Bangladesh: Assessing water and sediment dynamics
Researchers characterized the abundance, distribution, and types of microplastics in the water and sediments of the Surma River in Bangladesh. They found widespread microplastic contamination, with fibers being the dominant particle shape, linked to nearby textile and urban sources. The study provides baseline data on microplastic pollution in a major South Asian river system and highlights the need for mitigation strategies.
Microplastics pollution in aquatic ecosystems of Bangladesh — A critical review on research trends and future perspectives
This review found widespread microplastic contamination across all aquatic compartments in Bangladesh, with average concentrations of 4.92 particles/L in water and 118.40 particles/kg in sediment. Polyethylene, polypropylene, and polystyrene fibers and fragments predominated, with freshwater fish accumulating the most microplastics per organism.
Microplastics in freshwater wild and farmed fish species of Bangladesh
Researchers evaluated microplastic contamination in freshwater wild and farmed fish species across multiple rivers and farms in Bangladesh, comparing contamination levels between wild-caught and aquaculture-raised fish of the same species.
Extent and distribution of microplastic contamination in the benthic sediment of Turag river in Bangladesh
Researchers quantified microplastic contamination in benthic sediments of the Turag River in Bangladesh, finding widespread microplastic accumulation that poses threats to benthic communities and highlights a significant knowledge gap in freshwater sediment microplastic studies.
Assessment of microplastic contamination in the gastrointestinal tracts of indigenous fishes from north eastern hill regions of Bhogdoi, a tributary of River Brahmaputra, India
Researchers assessed microplastic contamination in the digestive tracts of freshwater fish from the Bhogdoi River in northeast India. The study found that all 180 fish examined contained microplastics, with fibers and fragments in the 100-500 micrometer range being most common, and herbivorous species showing the highest accumulation. Evidence indicates that polyamide and polypropylene were the most prevalent polymer types, providing baseline data on microplastic ingestion by fish in the Brahmaputra tributary system.
Microplastics in fishes from the Meghna River estuary, Bangladesh
Researchers found microplastics in over 80% of fish sampled from the Meghna River estuary in Bangladesh, with fibres being the most common type and polyethylene and polypropylene the dominant polymers. The contamination of these commercially important fish species signals a risk of microplastic exposure for people who eat them, particularly in communities where fish is a dietary staple.
Assessment of microplastics in coastal ecosystem of Bangladesh
Researchers surveyed microplastic contamination in water, beach sand, and fish along two major coastal areas of Bangladesh. Microplastics were found in every sample type, with fibers being the most common shape and polyethylene and polypropylene the dominant plastic types. Fish accumulated microplastics in their digestive tracts and body tissues, raising concerns about human exposure through seafood consumption in the region.
Microplastic Occurrences in Freshwater Fish of Bangladesh
This review synthesizes research on microplastic contamination found in freshwater fish across Bangladesh, where rapid population growth and urbanization have led to significant plastic pollution. Researchers found that fibers are the most commonly detected microplastic type in fish tissues, raising concerns about impacts on gut health and immune function. The study highlights the need for more comprehensive monitoring given Bangladesh's heavy reliance on freshwater fish as a dietary staple.
Abundance and Distribution of Microplastics in Surface Water and Sediment of Two Selected Rivers in Bangladesh
Researchers found microplastics in both surface water and sediment of the Jamuna and Turag Rivers in Bangladesh, identifying 145 and 261 microplastic particles respectively across sampling stations, highlighting emerging plastic pollution in South Asian freshwater systems.
Assessment of microplastics pollution in aquatic species (fish, crab, and snail), water, and sediment from the Buriganga River, Bangladesh: An ecological risk appraisals
Researchers assessed microplastic pollution across water, sediment, fish, crab, and snail from Bangladesh's Buriganga River, finding widespread contamination with fibers and fragments along with elevated heavy metal concentrations on microplastic surfaces.
Microplastics in fishes from the Northern Bay of Bengal
Researchers examined microplastic contamination in three fish species collected from the Northern Bay of Bengal in Bangladesh. They found an average of 3 to 9 microplastic items per fish, with fibers and irregular fragments being the most common types. The study highlights the prevalence of microplastic pollution in this important fishery region and the potential for human dietary exposure through consumption of these commonly eaten fish species.
Microplastics in pelagic and demersal fishes from the Meghna River estuary, Bangladesh
Scientists examined 80 fish from the Meghna River estuary in Bangladesh and found microplastics in over 81% of them, with an average of about 7 particles per fish. Polyethylene, polypropylene, and nylon fibers were the most common types found in the fish digestive tracts. Since these are species commonly eaten by local communities, the findings raise concerns about microplastic exposure through the food chain.
Assessing year-round microplastic loading in the lower Brahmaputra River: A threat to aquatic environment
Scientists tracked microplastic levels in the lower Brahmaputra River in Bangladesh throughout the year and estimated that 23.6 kilograms, or trillions of particles, flow through annually. Contamination was highest during the wet season due to rainfall washing plastics into the river, and risk assessments showed potential harm to freshwater species. Since the Brahmaputra provides water and fish for millions of people, this persistent microplastic contamination is a public health concern.
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.
Unveiling Microplastics in Commercial Brackish Water Fishes from the Lower Meghna River Estuary of Bangladesh
Researchers found microplastics in the digestive tracts of three commonly eaten fish species from the Meghna River estuary in Bangladesh, with one species averaging nearly 23 particles per fish. Fibers were the dominant shape, and several of the plastic types identified scored high on a polymer hazard index. Since these fish are a dietary staple for local populations, the study highlights a direct route of microplastic exposure for millions of people in Bangladesh.
Characterization of Microplastics in Gastointestinal Tracts of Some Selected Fish Species in Akhalia River, Fulbaria, Mymensingh
Researchers found microplastics in the gastrointestinal tracts of three freshwater fish species — Channa punctatus, Macrognathus armatus, and Anabas testudineus — collected from the Akhalia River in Bangladesh, documenting the abundance, distribution, and characteristics of ingested particles.
Microplastic pollution in the gastrointestinal tract of giant river catfish Sperata seenghala (Sykes, 1839) from the Meghna River, Bangladesh
Researchers examined the digestive tracts of giant river catfish from the Meghna River in Bangladesh and found microplastics in 90 percent of the fish sampled. The most common particles were polypropylene-polyethylene fragments smaller than 100 micrometers, with the highest contamination near densely populated areas. The findings add to growing evidence that freshwater fish in South Asian rivers are widely contaminated with microplastics.