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Chronic Toxicity of Microplastics on Fish (Labeo rohita) and Their Impact on the Freshwater Ecosystem: A Case Study of Gangasagar Pond, Darbhanga, India
Summary
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.
The present investigation was conducted to evaluate the chronic toxicity of microplastics on fish, Labeo rohita and isolation, identifications and estimation of microplastics in freshwater pond, Gangasagar Pond, Darbhasnga. traceable clinical, anatomical (morphological) and histopathological alterations. The data were analyzed and found that microplastic fibre (ranging between 12 to 56/m3) were dominated followed by microplastic film (ranging between 10 to 38), fragment (ranging between 8-22). The number of foam, beads (spherical) and coloured were relatively low. The sources of these plastic contaminations are mainly domestic wastes, discarded packaging materials and medical wastes. Trace of microplastics in gill chamber as well as buccal cavity was well marked causing edematous changes. The Histopathological studies suggest that intestine and stomach were the most affected organs in response to microplastics abuse. Microplastics will ultimately affect the aquatic fauna of the pond adversely.
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