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First evidence of microplastics and their characterization in yellow-legged gull (Larus michahellis michahellis, Naumann, 1840) pellets collected from the Sfax salina, southeastern Tunisia

Marine Pollution Bulletin 2024 9 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Chayma Essoufi, Saul Santini, Laura Sforzi, Tania Martellini, David Chelazzi, Rihab Ayari, Laura Chelazzi, Alessandra Cincinelli, Alessandra Cincinelli, Nabil Hamdi

Summary

Researchers found microplastics in regurgitated pellets of yellow-legged gulls from a Tunisian saltwater lagoon, with 309 particles identified including 63.8 percent fibers and 36.2 percent fragments. Micro-FTIR analysis revealed that artificial cellulose dominated fiber composition, while ethylene vinyl acetate was among the plastic types detected.

Polymers

The aim of this work was to provide evidence on the presence of microplastics (MPs) in regurgitated Yellow-legged Gull pellets (n = 18) from Sfax salina (south-eastern Tunisia). This artificial area is subject to high anthropogenic pressure and hosts Yellow-legged Gulls, which are at the top of the trophic chain and can be used as sentinel species to monitor litter in the environment, including plastic pollution. The total number of MPs found in the samples was 309, 63.8 % fibres (4.95 ± 3.51 MPs/g) and 36.2 % fragments (2.87 ± 1.74 MPs/g). Micro-FTIR analysis evidenced that a large proportion of the fibres was attributed to artificial cellulose (40.7 %). Ethylene vinyl acetate (EVA) and polyethylene (PE) were found in the fragments.

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