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The occurrence of microplastics in gut contents of endemic barb Sahyadria chalakkudiensis (Menon, Rema Devi & Thobias, 1999) inhabiting river systems of Western Ghats, South India
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Researchers found consistent microplastic ingestion in an endemic freshwater barb from rivers in the Western Ghats, South India, with fibres being the dominant particle type. The study documents plastic contamination reaching even upstream freshwater habitats of ecologically important endemic fish species.
Sahyadria chalakkudiensis, the endemic barb inhabiting rivers of Western Ghats, S. India has been supporting considerable aquarium trade and is known to dwell in upstream areas of these rivers. A concerted study on its feeding biology from 730 fishes has revealed consistent occurrence of microplastics in their guts, pointing to serious plastic pollution affecting riverine ecosystem. This fish has omnivorous feeding habit as evident from percentage index of relative indices of various prey items as animal matter (62%), filamentous algae (26%), sand particles (4%) and other matter (8%). Among other matter, microplastic fibres were consistently encountered in 86 guts (11.8% of total guts examined) collected in all months except September. The monthly occurrence of guts containing microplastic fibres showed significant correlation to guts containing filamentous algae (r=0.95, p
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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.
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Researchers assessed microplastic contamination in the digestive tracts of freshwater fish from the Bhogdoi River in northeast India. The study found that all 180 fish examined contained microplastics, with fibers and fragments in the 100-500 micrometer range being most common, and herbivorous species showing the highest accumulation. Evidence indicates that polyamide and polypropylene were the most prevalent polymer types, providing baseline data on microplastic ingestion by fish in the Brahmaputra tributary system.
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