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Microplastic contamination in fish harvested from the estuarine mangrove forest of Banda Aceh City, Indonesia
Summary
Microplastics were detected in both the digestive tracts and flesh of three fish species — mullet, glassfish, and mudskipper — caught from mangrove forest waters of Banda Aceh City, Indonesia. All three species showed contamination, with mudskippers having the highest particle counts, and the plastic fragments were traced to domestic and industrial waste sources. The presence of microplastics in the edible flesh of these fish is particularly concerning since they are consumed locally, representing a direct route of human exposure through seafood.
Mullet fish (Mugil cephalus), glassfish (Ambassis nalua), and mudskipper (Periophthalmus sp.) dominate the mangrove ecosystem waters of Banda Aceh City, Indonesia. These fish are potentially contaminated with microplastics from domestic and industrial waste. This study aimed to analyze microplastic contamination in the digestive tracts and flesh of fish from the mangrove area of Banda Aceh City, Indonesia. Sampling was conducted at 3 stations: Alue Naga in Syiah Kuala District, Pande in Kuta Raja District, and Blang in Meuraxa District, from December 2023 to February 2024. A total of 478 mullets, 462 glassfish, and 435 mudskippers were sampled. Based on fish species and sampling location, glassfish and the Alue Naga station exhibited the highest abundance of microplastics, with values of 1.55 particles/fish and 1.77 particles/fish, respectively. Black was the most dominant color of microplastics found in all fish samples, with the predominant size groups being <20 μm and 21–40 μm. Film was the predominant shape of microplastics in all fish species. FTIR analysis confirmed the presence of nylon and polypropylene microplastic polymers in the fish flesh. Mullet fish, glassfish, and mudskippers from the mangrove forest waters of Banda Aceh City, Indonesia, have been contaminated by microplastics.