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61,005 resultsShowing papers similar to ‘The Plastic Nile’: First Evidence of Microplastic Contamination in Fish from the Nile River (Cairo, Egypt)
ClearPlastic pollution in fish (O. niloticus and C. gariepinus) in a Nile Canal, Delta of Egypt.
Researchers examined microplastic contamination in the gastrointestinal tracts of 127 Nile tilapia and 32 African catfish from a Nilotic canal in Egypt's Delta, finding microplastic occurrence rates of 33.9% and 59.4% respectively with fibers as the dominant morphology. The study analyzed the relationship between microplastic ingestion and fish biological parameters, feeding habits, and seasonal variation.
Distribution and Abundance of Microplastics (MPs) in the Water, Sediment, and Some Freshwater Animals, Nile River, Upper Egypt
Researchers found microplastics in all water, sediment, and animal samples collected from the Nile River in Upper Egypt, with Edfu showing the highest abundances and crayfish accumulating the most microplastics in gills while African catfish had the highest alimentary canal burden.
The first evidence of microplastic presence in the River Nile in Khartoum, Sudan: Using Nile Tilapia fish as a bio-indicator
This scoping study investigated microplastic presence in Nile Tilapia fish from the River Nile in Khartoum, Sudan -- the first such study in Sudanese freshwaters -- finding microplastics across sampled fish. The authors establish baseline data for a major African river system with previously no microplastic records.
Occurrence and distribution of meso- and macroplastics in the water, sediment, and fauna of the Nile River, Egypt
Researchers characterized the abundance and distribution of meso- and macroplastics in water, sediment, fish, and crayfish from the Nile River in Upper Egypt, finding plastics throughout all media and at all sites, with the Nagaa Hammadi site having the highest abundance. African catfish had the highest plastic load among the species examined.
Microplastic contamination in water, fish, and shrimp collected from the Nile River in Upper Egypt poses ecological and human health hazards
Researchers found significant microplastic contamination in Nile River water, fish, and shrimp in Upper Egypt, with urban areas showing the highest levels. They estimated that adults living in the area may ingest thousands of microplastic particles per kilogram of body weight annually through water alone. Since millions of people depend on the Nile for drinking water and food, these findings raise serious concerns about long-term health effects from chronic microplastic exposure.
Microplastics profile in fishes from selected burrow pits: a case of plastic pollution in Kano metropolis, Nigeria
Researchers detected microplastics in the gastrointestinal tracts, gills, and muscle tissues of Nile tilapia and redbelly tilapia collected from burrow pits in Kano, Nigeria, confirming that plastic pollution has penetrated freshwater fish in a landlocked urban African setting.
Prevalence and risk assessment of microplastics in the Nile Delta estuaries: “The Plastic Nile” revisited
Researchers assessed microplastic prevalence and health risks in estuaries of the Nile Delta in Egypt, finding MPs in water, sediment, and seafood samples across multiple sites. Risk assessment indicated potential exposure concern for communities relying on these estuaries for food and water.
Microplastics Pollution in Aquatic Environment: A Review of Abundance, Distribution, and Composition in the Egyptian Coastal Waters
This review compiles data on microplastic pollution across Egypt's Mediterranean coast, the Nile River, and the Red Sea, all of which face significant plastic contamination. Researchers found that the Mediterranean is a global hotspot for marine plastic accumulation, while the Nile acts as a major conduit for plastics entering the eastern Mediterranean basin. The study calls for more systematic monitoring to understand the full scope of microplastic pollution in Egyptian waters.
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.
Effects of Microplastics on Gene Expression, Muscular Performance, and Immunological Responses in Nile Tilapia (Oreochromis niloticus): Seasonal and Habitat Variations
Researchers found microplastics in both the gut and muscle tissue of Nile tilapia fish from two sites along the Nile River in Egypt, with contamination levels varying by season and location. The microplastics activated genes linked to muscle wasting, cell death, and inflammation while suppressing growth-related genes, with the worst effects seen during summer months. Since tilapia is a widely consumed fish, these findings raise concerns about microplastic-related damage being passed to humans through the food supply.
Abundance and risk assessment of microplastics in water, sediment, and aquatic insects of the Nile River
Researchers measured microplastic pollution in the Nile River across water, sediment, and aquatic insects throughout different seasons, finding contamination in all compartments. Fiber-shaped polyester microplastics were the most common, with summer showing the highest levels. The presence of microplastics in aquatic insects at the base of the food chain means these particles could be transferred up to fish and eventually to humans who consume them.
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.
Microplastics contamination in commercial fish from Alexandria City, the Mediterranean Coast of Egypt
Researchers found microplastic contamination in commercial fish samples from Alexandria City markets on the Mediterranean coast of Egypt, with MPs detected in the gastrointestinal tracts of multiple species. The study assessed potential human dietary exposure from consuming fish that had ingested plastic particles in the heavily polluted Eastern Mediterranean.
Assessing microplastic abundances in freshwater fishes in a subtropical African reservoir
Scientists examined freshwater fish from a reservoir in South Africa and found microplastics in nearly 87% of the fish across eight species. Fibers were the most common type of microplastic, found in both the gills and digestive tracts of the fish. Since these fish are consumed by local communities, the widespread contamination raises concerns about human exposure to microplastics through freshwater fish, an understudied area compared to marine seafood.
Detection of Microplastic Types and Polycyclic Aromatic Hydrocarbon Levels: Evaluating the Depuration Effect on Accumulation in Two Freshwater Invertebrate Species in the Nile Delta, Egypt
This study assessed the accumulation of microplastics and polycyclic aromatic hydrocarbons in water, sediments, and the tissues of freshwater animals in two locations along the Nile River in Egypt. The research addressed a gap in freshwater contamination data for this major river system, which serves as a critical water source.
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.
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.
Occurrence of Microplastics in the Tissues of Nile Tilapia (Orechromis niloticus) from Zobe Dam, Katsina State, Nigeria
This study found microplastics in the tissues of Nile tilapia cultured in freshwater, with particles identified in gills, intestines, and muscle tissue. The results highlight the potential for microplastic transfer from farmed fish to human consumers.
Distribution, abundance, and composition of microplastics in market fishes from the Red and Mediterranean seas in Egypt
Researchers analyzed microplastic contamination in commercially sold fish from both the Mediterranean and Red seas in Egypt and found microplastics in 88 percent of the fish examined. Fibers were the most common particle type, and species that feed closer to the seafloor tended to have higher contamination levels. The study raises concerns about human dietary exposure to microplastics through regularly consumed market fish in the region.
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.
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.
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.
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.
Microplastics prevalence in water, sediment and two economically important species of fish in an urban riverine system in Ghana
Microplastics were detected in water, sediment, and two commercially important fish species from an urban river system in Ghana, with fiber being the dominant type across all matrices. The study represents one of the first assessments of freshwater microplastic contamination in West Africa and highlights urban river systems as major pathways for plastic transport.