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The uptake of macroplastic & microplastic by demersal & pelagic fish in the Northeast Atlantic around Scotland
Summary
Researchers examined plastic ingestion in coastal flatfish and offshore pelagic and demersal fish around Scotland, finding that nearly half of coastal fish contained plastic while only 2.4% of offshore fish did, with polyamide fibers being the most commonly identified polymer type across both environments.
This study reports plastic ingestion in various fish found from coastal and offshore sites in Scottish marine waters. Coastal samples consisted of three demersal flatfish species (n=128) collected from the East and West coasts of Scotland. Offshore samples consisted of 5 pelagic species and 4 demersal species (n=84) collected from the Northeast Atlantic. From the coastal fish sampled, 47.7% of the gastrointestinal tracts contained macroplastic and microplastic. Of the 84 pelagic and demersal offshore fish, only 2 (2.4%) individuals from different species had ingested plastic identified as a clear polystyrene fibre and a black polyamide fibre. The average number of plastic items found per fish from all locations that had ingested plastic was 1.8 (±1.7) with polyamide (65.3%), polyethylene terephthalate (14.4%) and acrylic (14.4%) being the three most commonly found plastics. This study adds to the existing data on macroplastic and microplastic ingestion in fish species.