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61,005 resultsShowing papers similar to Do microplastics pose health hazard?: A laboratory study by Oreochromis niloticus
ClearEvaluation of Toxicological Risks and Effects of Microplastics on Nile Tilapia (Oreochromisniloticus) under in Vitro Laboratory Conditions
This laboratory study evaluated the toxicological effects of microplastics on Nile tilapia (Oreochromis niloticus) under controlled conditions, finding measurable harm at the concentrations tested. The results have implications for managing fish health in aquaculture operations with microplastic-contaminated water.
How do fish consume microplastics? An experimental study on accumulation pattern using Nile tilapia (Oreochromis niloticus)
Researchers fed Nile tilapia in controlled lab conditions to study how microplastics accumulate in fish organs. They found that most microplastics came from the fish feed rather than from particles floating in the water, and that the digestive tract accumulated the most particles while muscles, the part humans typically eat, contained the smallest sizes. Twelve different polymer types were identified across the fish tissues.
Deleterious Effects of Polypropylene Microplastic Ingestion in Nile Tilapia (Oreochromis niloticus)
Researchers fed Nile tilapia daily doses of polypropylene microplastics for 30 days and observed significant health effects including changes in blood cell counts, altered gut bacteria, and tissue damage to the intestines and liver. The higher dose group showed more pronounced effects, including elevated inflammatory markers and signs of oxidative stress. The study provides evidence that chronic ingestion of microplastics commonly found in aquatic environments can cause meaningful harm to a widely consumed fish species.
Microplastics in Oreochromis Niloticus: An Abundance Study and Health Risk Assessment Around the Gajah Mungkur Reservoir
Researchers characterized microplastics in Nile tilapia (Oreochromis niloticus) from the Gajah Mungkur Reservoir in Indonesia and conducted individual-based carcinogenic health risk assessments for local fish consumers. Microplastics were predominantly blue fibers, with polystyrene and PTFE most common, and the risk assessment indicated potential carcinogenic risk at typical consumption levels.
Correlation of Water Quality with Microplastic Exposure Prevalence in Tilapia (Oreochromis niloticus)
Researchers exposed tilapia to polyethylene microplastics at three concentrations and assessed effects on water quality and microplastic accumulation in gastrointestinal, liver, gill, and gonad tissues, finding that higher concentrations were associated with elevated microplastic prevalence and tissue-specific accumulation patterns.
The Presence of Microplastics in the Genus Oreochromis: A Review
This review summarizes evidence of microplastic contamination in Oreochromis tilapia species across multiple geographic regions, examining abundance, polymer types, and potential pathways of MP ingestion, with implications for seafood safety and aquaculture management.
Assessment of dietary polyvinylchloride, polypropylene and polyethylene terephthalate exposure in Nile tilapia, Oreochromis niloticus: Bioaccumulation, and effects on behaviour, growth, hematology and histology
Nile tilapia fish fed three common types of microplastics (PVC, polypropylene, and PET) showed reduced growth, abnormal behavior, blood cell damage, and tissue damage in their gills, liver, and intestines. The harmful effects increased with higher doses of microplastics and varied by plastic type. Since tilapia is one of the most widely consumed fish globally, these findings raise concerns about the health of fish that may carry microplastic contamination to human diets.
Bioakumulasi Mikroplastik Pada Daging Ikan Nila (Oreochromis niloticus) di Keramba Jaring Apung Ranu Grati, Pasuruan, Jawa Timur
Researchers investigated microplastic bioaccumulation in the muscle tissue of Nile tilapia (Oreochromis niloticus) from floating net cages in Ranu Grati Lake, Pasuruan, East Java, quantifying microplastic uptake and assessing the physiological risks these synthetic polymer particles pose to fish and human consumers.
Effects of Microplastics on the Oxygen Consumption and Histological Changes of the Cultured Nile Tilapia Oreochromis niloticus
This study found that microplastic exposure caused tissue damage in the gills and intestines of tilapia fish, with higher concentrations leading to more severe changes. Since tilapia is widely consumed worldwide, these findings raise questions about whether microplastics in farmed fish could affect the quality and safety of the seafood on our plates.
Sub-chronic exposure of Oreochromis niloticus to environmentally relevant concentrations of smaller microplastics: Accumulation and toxico-physiological responses
Researchers exposed Nile tilapia to low, environmentally relevant concentrations of polystyrene microplastics for 14 days and found the particles accumulated in multiple organs including the brain, liver, and reproductive tissues. The fish showed changes in blood chemistry, increased stress hormones, and signs of liver and kidney dysfunction. These results suggest that even realistic levels of microplastic pollution can cause measurable physiological harm in fish.
Toxicological assessment of dietary exposure of polyethylene microplastics on growth, nutrient digestibility, carcass and gut histology of Nile Tilapia (Oreochromis niloticus) fingerlings
Researchers fed Nile tilapia fish diets containing different amounts of polyethylene microplastics and found that higher levels significantly reduced growth, nutrient absorption, and body composition. Fish exposed to the highest microplastic concentration (10%) showed severe gut damage visible under a microscope. Since tilapia is widely farmed for human consumption, these findings raise concerns about microplastic contamination affecting both fish health and the safety of farmed seafood.
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, 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.
Characterization, source identification and hazard index assessment of ingested microplastics in farmed tilapia Oreochromis niloticus
Researchers analyzed microplastics in the digestive tracts of farmed tilapia from 12 fish farms in Bangladesh, finding an average of 5–6 particles per fish dominated by fibers, with polyvinyl chloride (PVC) and polyethylene scoring the highest hazard ratings. The results raise concern that people who eat farmed fish from these regions may be consuming microplastics with polymers classified at the highest danger levels.
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.
Histological and Histochemical Effects of Microplastics Administration in Oreochromis niloticus Fingerlings
Researchers exposed Nile tilapia to two types of microplastics and examined histological and histochemical changes in gills, liver, and kidneys, finding tissue-level damage that demonstrates the harmful effects of microplastic ingestion on vital fish organs.
Integrated Biomarker, Histopathological and Genotoxicity‐Based Toxicological Evaluation of Polystyrene and Polyethylene Microplastics in Oreochromis mossambicus
Researchers exposed Mozambique tilapia to polystyrene and polyethylene microplastics and found dose-dependent accumulation in gill, gut, and liver tissues. Polyethylene proved significantly more toxic, causing greater oxidative stress, metabolic disruption, and chromosomal damage as measured by micronucleus assays. The study provides evidence that different polymer types can have markedly different toxicological impacts on freshwater fish.
Occurrence of micro- nanoplastics in a commercial recirculated aquaculture system and their translocation to cultured fish organs: A baseline study
Researchers found microplastics and nanoplastics inside the muscle, brain, and gut of Nile tilapia raised in a commercial fish farm that uses recirculated water, identifying multiple plastic polymer types in fish tissue — a finding that suggests farmed fish are a direct route for microplastic exposure in people who eat them.
Microplastics in Tilapia Fish (Oreochromis Niloticus) Cultured at Magat Dam Reservoir
This study investigated microplastic contamination in Nile tilapia cultured in Magat Dam Reservoir in the Philippines, identifying particles in digestive tracts and gill tissues. The findings raise concerns about microplastic accumulation in farmed freshwater fish destined for human consumption.
Survival rate and growth performance of tilapia (Oreochromis niloticus) exposed in polyvinyl chloride microplastics
This study tested how polyvinyl chloride (PVC) microplastics affect the survival and growth of tilapia, a widely eaten fish. While focused on fish rather than humans, it provides data on how microplastics in water can harm aquatic life that ends up on our plates. The findings add to concerns about microplastic contamination in the food chain.
Assessment the effect of exposure to microplastics in Nile Tilapia (Oreochromis niloticus) early juvenile: I. blood biomarkers
Researchers exposed juvenile Nile tilapia to different concentrations of microplastics for 15 days followed by a 15-day recovery period and measured blood biomarkers. They found dose-dependent changes in biochemical and hematological parameters, including elevated liver enzymes, altered blood cell counts, and increased glucose levels. Many of these effects persisted even after the recovery period, suggesting that microplastic exposure can cause lasting physiological stress in young freshwater fish.
The Effect of Exposure to Polystyrene Microplastics in Feed on the Growth of Tilapia (Oreochromis niloticus)
This study exposed tilapia fish to polystyrene microplastics mixed into their feed at different concentrations. The results showed that microplastic exposure negatively affected the growth and development of the fish. This is relevant to human health because tilapia is a widely consumed fish, and microplastics accumulating in farmed fish could be passed along to the people who eat them.
Ingestion and the toxicological effects of virgin polyethylene (PE) and PVC microplastics in commercial freshwater fish, Tilapia (Oreochromis niloticus)
Researchers exposed Nile tilapia to virgin polyethylene and PVC microplastics for 21 days, finding that both types caused behavioral changes and mortality, with PVC producing greater toxicity, reduced growth rates, and histological damage to gut and liver tissue.
Nano polystyrene microplastics could accumulate in Nile tilapia (Oreochromis niloticus): Negatively impacts on the intestinal and liver health through water exposure
Researchers exposed Nile tilapia fish to polystyrene microplastics of different sizes (ranging from 80 nanometers to 80 micrometers) and found that the smallest particles were most likely to accumulate in the body. The 80-nanometer particles caused the most severe damage to intestinal and liver tissues, disrupting cell growth and triggering inflammation and oxidative stress. The study suggests that nanoscale plastic particles may pose greater health risks to fish than larger microplastics.