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Occurrence of microplastics in the gastrointestinal tracts of edible fishes from South Indian Rivers
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This study examined microplastics in the gastrointestinal tracts of five fish species from two rivers in Tamil Nadu, southern India. A total of 315 microplastic particles were recovered, predominantly fibers and fragments, indicating widespread contamination in edible riverine fish.
Abstract The occurrence of microplastics MPs in the gastrointestinal (GI) tracts of the five different fish species (Chanos chanos, Chanda nama, Chelon macrolepis, Gerrus filamentosus, and Carangoides malabaricus) from the Kollidam River and Vellar River of Tamil Nadu, Southern India were evaluated. A maximum of 23 individual fishes was sampled from both Rivers and alkaline digestion was performed to extract the MPs in the GI tract of fishes. The results revealed that a total of 315 MPs were isolated from the GI tracts of all fishes sampled from both Rivers with fibres and fragments. The average size of ingested MPs was ranged between 108.72 to 129.11 µm and 181 to 284 µm in the fishes sampled from Kollidam and Vellar River respectively. In the morphological examination of MPs, fishes from both Rivers showed the maximum level of fibres, followed by fragments. The colour pattern of the ingested MPs was dominated by blue, transparent, red and other colours in both rivers. In this study, MPs in the GI tract of fishes indicated that the MPs pollution in studied Rivers can cause significant threats to aquatic fauna.
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Occurrence of Microplastics in the Gastrointestinal Tracts of Edible Fishes from South Indian Rivers
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Researchers isolated and characterized microplastics from the gastrointestinal tracts of five edible fish species collected from the Kollidam and Vellar rivers in Tamil Nadu, Southern India. They found 315 microplastic particles across 23 fish, dominated by fibers (85.7%) in Kollidam river fish and fragments (14.3%) in Vellar river fish, with particle sizes ranging from 109 to 284 µm, indicating widespread dietary exposure to microplastics in commercially harvested freshwater fish.
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