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Effect of plastic microbeads on the development of roho (Labeo rohita)
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Researchers fed roho fish (Labeo rohita) varying doses of plastic microbeads over 120 days and found that ingesting microplastics directly stunted their growth, with higher concentrations causing greater harm — providing evidence that microplastic pollution can impair the health of freshwater fish species.
Microplastics are an emerging pollutant of marine environments, affecting fish and other marine biota such as copepods and rotifers. The current study assesses the impact of plastic microbeads on the growth of roho (Labeo rohita) in a 4-month feeding experiment under laboratory conditions. Over a period of 120 days, roho fingerlings were exposed to different concentrations of plastic microbeads (50 mg to 200 mg/kg of feed) mixed into their feed. It was found that the ingestion of plastic microbeads negatively affected the growth of roho and that the concentration of the plastic microbeads directly influenced the growth rate of the fish.
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Polystyrene microplastics exposure in freshwater fish, Labeo rohita: evaluation of physiology and histopathology
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Researchers fed freshwater fish varying levels of polystyrene microplastics for 90 days and found dose-dependent damage to blood health, growth, and organ tissues. Higher microplastic concentrations caused more severe harm to the liver, kidneys, gills, and intestines. The study highlights that microplastics in freshwater systems can accumulate in fish and cause significant health problems, raising concerns about food safety for communities that rely on freshwater fish.
IMPACTS OF POLYETHYLENE TEREPHTHALATE MICROPLASTICS ON GROWTH PERFORMANCE AND BIOCHEMICAL BIOMARKERS IN ROHU, Labeo rohita
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Scientists exposed rohu fish—a popular food fish in South Asia—to microplastics commonly found in plastic bottles (PET) and discovered that higher doses caused stunted growth, blood abnormalities, liver stress, and increased oxidative damage in the fish's organs. Since these fish are widely eaten by humans, this research suggests that microplastic pollution in waterways could be compromising both the health of fish populations and the safety of seafood that ends up on our plates.
Toxicological Effects of Polystyrene Microplastics on Growth, Enzymatic Activity, Hematology, and Tissue Integrity in Labeo rohita
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Scientists exposed farmed fish (Rohu, a popular food fish) to microplastic pollution levels found in some contaminated waters and found it damaged their gills and intestines, slowed their growth, caused anemia-like symptoms, and made it harder for them to absorb nutrients from food. While this study was done in fish rather than humans, it matters because it shows microplastics can cause real physical harm to the animals we eat and to aquatic ecosystems overall—raising concerns about both food supply sustainability and the broader impact of plastic pollution making its way up the food chain.
Chronic Toxicity of Microplastics on Fish (Labeo rohita) and Their Impact on the Freshwater Ecosystem: A Case Study of Gangasagar Pond, Darbhanga, India
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Researchers investigated microplastic contamination in Gangasagar Pond in India, finding fibers as the most common type, primarily from domestic waste and discarded packaging. Fish in the pond showed microplastics lodged in their gill chambers and mouths, and tissue analysis revealed damage to the stomach and intestines. The study suggests that microplastic pollution in freshwater ecosystems can directly harm fish health through ingestion and physical contact.
Microplastic Bioaccumulation and its Systemic Effects in Labeo rohita: From Cellular Damage to Behavioural Disruption
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Rohu carp (Labeo rohita) exposed to polyethylene microplastics at up to 5 mg/L for 60 days accumulated particles in gills, liver, and intestines with dose-dependent cellular damage, behavioral disruption, and partial recovery after 30 days in clean water.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.