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Microplastic contamination across different feeding guilds of commercially important fishes from the Southeast Coast of India
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Researchers found tiny plastic particles (microplastics) in popular seafood from India's southeast coast, including mussels, prawns, and fish like red snapper and mackerel — with wild-caught mussels and opportunistic-feeding fish showing the highest levels. Most of the plastic bits were tiny black fibers, likely from sources like synthetic clothing and fishing gear, made of common plastics like polyethylene. Since these are commonly eaten seafood species, this raises real questions about how much microplastic ends up on our dinner plates and in our bodies — though more research is needed to understand what that means for our health.
Plastic pollution is an escalating issue in marine ecosystems, with microplastics (MPs) becoming a significant contaminant. MPs have been identified in many aquatic organisms, affecting all trophic levels through direct or indirect consumption. This study investigates the prevalence of MPs in commercially available edible finfish and shellfish species in Puducherry, India. Four shellfish species, Asian green mussel (Perna viridis), Asian hard clam (Meretrix meretrix), Indian prawn (Fenneropenaeus indicus), and cultured Tiger prawn (Penaeus monodon), and five finfish species, Red snapper (Lutjanus argentimaculatus), Indian mackerel (Rastrelliger kanagurta), Indian oil sardine (Sardinella longiceps), mackerel scad (Deccapterus macarellus), and Indian lizardfish (Synodus indicus) were examined. Among the shellfish, we found the highest concentration of MPs in mussels collected from the sea and the lowest in Tiger prawns collected from aquaculture ponds. In finfish, the highest microplastic (MP) was detected in the Red snapper, an opportunistic feeder, and the lowest in the Indian oil sardine, a pelagic feeder. Fibers predominated in MP types for both finfish and shellfish, with black being the most prevalent color. Shellfish consumed more MP in the < 500-µm size, whereas finfish consumed the MP particles of the 500-1000-µm range. Hierarchical cluster analysis has been carried out to examine the linkage in the ingestion patterns of MP profiles among different species. The significant polymers identified include high- and low-density polyethylenes, polyurethane, cellulose acetate, and ethylene-vinyl acetate. The presence of MP in commonly consumed seafood raises ecological concerns and underscores the need for further investigation into potential human exposure pathways.
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Occurrence and Characterization of Microplastics in the Gastrointestinal Tracts of Fish and a Crustacean from the Keralam Coast, Southeastern Arabian Sea
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Researchers found tiny plastic particles (microplastics) in the stomachs of nearly half of the fish and shrimp they tested from a fishing harbor in India, including popular seafood like mackerel and mullet. These plastics likely come from urban runoff and harbor activity, and since these are commercially sold species, this raises concern that the plastic we dump in the ocean could be making its way onto our dinner plates.
Accumulation of microplastic in edible marine species from North Kerala, India
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Researchers found microplastics in the edible tissues of three popular seafood species (clams, shrimp, and anchovies) from fish markets in Kerala, India. Fibers and fragments were the most common shapes, with polyethylene and polypropylene being the dominant plastic types. Since these species are consumed whole or with minimal processing, the study highlights a direct pathway for microplastic ingestion by people who eat locally caught seafood.
From Gujarat to global plates: An integrated assessment and meta-analysis of microplastics in commercially important pelagic fishes and human health risks
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Scientists tested popular fish species from Indian fishing harbors and found tiny plastic particles (microplastics) in every fish they checked—with the highest levels actually showing up in the muscle tissue, the part we typically eat, not just the guts or gills. Combined with a review of over 130 other studies worldwide, the research confirms this is a global pattern, meaning the seafood on your plate likely contains some level of plastic contamination, though scientists are still working out exactly how much risk that poses to human health.
Occurrence and characterization of microplastics in the gastrointestinal tract of commercial fish and crustacean species from Kochi, India
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Researchers found over 2,200 tiny plastic particles in the guts of fish and shellfish commonly eaten in the Kochi region of India, with most particles being extremely small (less than 100 micrometers, thinner than a human hair). Some species, like the pearl spot fish, had much higher plastic levels than others, suggesting that what you eat may affect your plastic exposure. While this study doesn't prove harm to humans yet, it adds to growing evidence that plastic pollution is entering our seafood, making it a health concern worth watching as scientists learn more.
Microplastic Pollution in Commercially Important Seafood from Chandipur, Bay of Bengal, East Coast of India: A Detailed Risk Analysis
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Scientists tested popular fish and shrimp from India's Bay of Bengal coast and found tiny plastic particles (microplastics) not just in the guts, but also in the muscle tissue — the part people actually eat. Some of these plastics, including PVC and PET (common in pipes and bottles), were found at levels considered hazardous, and contamination was worse during monsoon season, likely due to rain washing plastic waste into the sea. This matters because eating seafood is a direct way microplastics and their chemicals could enter our bodies, and this study is among the first to measure that risk in this specific region.
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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.