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High levels of microplastic ingestion by commercial, planktivorous Alburnus tarichi in Lake Van, Turkey
Summary
Researchers found exceptionally high microplastic contamination in the planktivorous fish Alburnus tarichi from Lake Van, Turkey, averaging 34 microplastic pieces per individual across 101 fish sampled, with fibers being the most common shape and polyethylene the dominant polymer.
Microplastic pollution of inland environments has been receiving increased publicity over the last few years. For the first time, this study reports on the presence of microplastics (0.1 mm to <5 mm) in the gastrointestinal tracts of Alburnus tarichi in Lake Van from January to April 2020. In total, 101 fishes were obtained from Citoren, Edremit, Gevas and Dagonu fisheries regions. A total of 3338 pieces of plastic, ranging from 8 to 124 samples per fish with averaging 34 ± 13 MPs/individual, were extracted from gastrointestinal tracts of fish. The majority of the ingested particles consisted of fibres (74%), and blue coloured material was the most consumed microplastic. The polymers identified by Fourier Transform Infrared Spectroscopy (FTIR) were polyethylene and polypropylene. Consequently, this study suggested that the vast majority of A. tarichi were contaminated with microplastics and showed higher abundance in comparison with other worldwide studies so far.