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Spatio-temporal patterns of occurrence of microplastics in the freshwater fish Gambusia affinis from the Brantas River, Indonesia
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Researchers conducted the first investigation of microplastics in mosquitofish from Indonesia's Brantas River, finding significantly higher concentrations downstream than upstream and a positive correlation between fish body length and microplastic accumulation.
The first investigation of microplastics in G. affinis from the Brantas River was carried out in this study. Microplastics were found at higher concentrations in gambusia fish captured downstream (209.18 ± 48.85 particles/gram) than upstream (24.44 ± 0.14 particles/gram). Microplastic particle concentrations in G. affinis have a positive linear relationship with fish length. The fiber was the most prominent shape at Sites 1 and 2, whereas the fragment was dominant at Sites 3 and 4. With a value of 45-48%, black dominates the entire site, followed by blue (29-38%), transparent colors (7-11%), red (2-4%), purple (1-3%), and other colors (5-7%). Microplastics measuring <0.1 mm are commonly found in fish bodies. Cyclohexylmethyl octyl ester (phthalic acid) is the most abundant component found in microplastics, accounting for 30.11% of the total. This study provides evidence that G. affinis can be used to monitor the presence of microplastic pollution in the Brantas River but further studies are needed regarding the effects of microplastics and their health hazards on fish.
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The concentration of microplastic in water and fish (Gambusia affinis) collected from Brantas River
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Researchers measured microplastic concentrations in water and in the bodies of mosquitofish (Gambusia affinis) from the Brantas River in Malang, Indonesia, finding contamination in both. The study confirms that freshwater fish in Indonesian urban rivers are ingesting microplastics, raising concerns about human exposure through fish consumption.
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Researchers sampled water, gills, and digestive tracts of fish in Indonesia's Brantas River and found microplastics in all three, with fragments under 0.1 mm making up the majority — demonstrating that river fish are actively ingesting microplastics that then accumulate in their bodies.
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Researchers surveyed microplastic abundance and size distribution in the upstream Brantas River in Indonesia and analyzed correlations with water quality parameters, finding that smaller microplastic fragments were most prevalent and that microplastic levels related to several water quality indicators. The study contributes baseline data for managing plastic pollution in Indonesian river systems.
Prevalence of microplastics in commonly consumed fish species of the river Old Brahmaputra, Bangladesh
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Researchers found microplastics in nearly 59% of edible fish from Bangladesh's Old Brahmaputra river, with polyethylene fibers and pellets dominating, and ingestion rates linked to fish size, feeding behavior, and downstream location.
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Researchers assessed microplastic accumulation in marine fish from coastal waters of Baru and Trisik Beaches in Yogyakarta, Indonesia, finding microplastics in fish digestive tracts and surface waters, with river outflow serving as a major dispersal pathway for plastic pollution.
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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.