We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Investigation of Microplastic Accumulation in Two Freshwater Fish Species (Labeo rohita and Wallago attu) from Tanguar Haor, Bangladesh
AI summary Read the abstract
Researchers extracted and identified microplastics from the stomach, intestine, and dorsal muscle of Labeo rohita and Wallago attu from Tanguar Haor wetland in Bangladesh, confirming PP, PE, PVC, PA, PET, and PMMA via FTIR, UV-visible, and SEM/EDS. The intestine contained the most diverse range of polymer types, and the smallest microplastic mean diameter (570 nm) was found in dorsal muscle of Labeo rohita.
In the present work, we aimed to extract and identify microplastics (MPs) in two different species of fish, namely, Rohu fish (Labeo rohita) and Freshwater Shark (Wallago attu), inhabiting the Tanguar Haor (wetland) that is a part of the Surma River, Bangladesh. Three different parts, namely, the stomach, intestine, and dorsal muscle of the corresponding fish samples, were digested with a 10% KOH solution. We conducted a qualitative assessment using FTIR, UV-visible, and SEM/EDS measurements to confirm the presence of MPs. The study identified various types of MPs, including Polypropylene (PP), Polyethylene (PE), Polyvinylchloride (PVC), Polyamide (PA), Polyethylene terephthalate (PET), and Polymethyl methacrylate (PMMA), in three different parts of the respective fish samples. Among the different portions of fish, the intestine contained the most diverse range of MPs, with six different types identified. In comparison, five types of MPs were found in the stomach, and only three types were observed in the dorsal muscle. The mean diameter of the identified MPs determined by SEM analysis revealed the smallest mean diameter of 570 nm in the dorsal muscle portion of the L. rohita and the largest mean diameter of 889 nm in the intestine part of W. attu, respectively. Thus, the outcome of this investigation sheds light on the possible presence of MPs in freshwater wetland ecosystems.
More Papers Like This
Abundance, characteristics and variation of microplastics in different freshwater fish species from Bangladesh
AI summary Read the abstract
Researchers examined 48 freshwater fish from 18 species in Bangladesh and found microplastics in the digestive tracts of over 73% of the fish studied. Fibers were the most common shape, and the plastics were primarily polyethylene and polypropylene-based polymers. Bottom-dwelling fish contained more microplastics than those living higher in the water column, suggesting that contaminated sediments are a significant source of exposure for freshwater species.
Assessment of Microplastic Contamination in Commercially Important Fish Species From the Old Brahmaputra River and Its Environmental Health Impact
AI summary Read the abstract
Four freshwater fish species from Bangladesh's Brahmaputra River showed widespread microplastic contamination in intestines and 37.5% of muscle tissues, with thread-like red polyethylene particles dominating and pollution load indices indicating significant ecological accumulation. Microplastic infiltration into edible fish tissue from a major food source river underscores urgent risks to food safety and human health in densely populated South Asian communities.
Occurrence of plastics and their characterization in wild caught fish species (Labeo rohita, Wallago attu and Mystus tengara) of River Ganga (India) compared to a commercially cultured species (L. rohita)
AI summary Read the abstract
Researchers analyzed nine wild-caught fish species from two sites along the River Ganga in Patna, India, detecting plastics in gastrointestinal tracts, liver, gills, and muscles, providing rare data on plastic contamination in one of the world's most polluted rivers.
Chronic Toxicity of Microplastics on Fish (Labeo rohita) and Their Impact on the Freshwater Ecosystem: A Case Study of Gangasagar Pond, Darbhanga, India
AI summary Read the abstract
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.
Microplastics occurrence in water, sediment and edible small indigenous fish species in seasonal freshwater wetland ecosystems of Bangladesh
AI summary Read the abstract
Researchers found microplastics in the guts, gills, and muscle tissue of three commonly eaten fish species from seasonal wetlands in Bangladesh. Dried fish contained more microplastics than fresh fish, suggesting that the drying process concentrates plastic particles. Since these small fish are a dietary staple for local communities and are often eaten whole, this represents a direct pathway for microplastic exposure in human diets.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.