Research Information System
International Symposium on Fisheries and Aquatic Sciences “SOFAS 2023”, Trabzon, Turkey, 24 - 26 October 2023, pp.1-2
Abstract
In this study, it was aimed to
investigate the presence of microplastics in the gastrointestinal tract of the cultured
sea bass (Dicentrarchus labrax). The gastrointestinal tracts of sea bass
fish with an average weight of 264 g obtained from net cages in the sea in the
Aegean region in June were separated and kept in KOH solution for the digestion
of organic substances and the separation of microplastics for the purpose of
microplastics examination. Suspected microplastic samples were examined and
photographed under a stereo microscope. Suspected microplastics in the gastrointestinal
tracts of sea bass are classified as fiber, film, fragment and granules in
shape. Suspected microplastics in the form of film (23,8 pieces/fish) was more
commonly, followed by fiber (21,3 pieces/fish) and fragment (14 pieces/fish),
with particles in the form of least granules (2,71 pieces/fish). When suspected
microplastics were sorted by their colors, a total of %19,5 transparent, 32,4%
brown, 2, 6% yellow colors were found in the form of films and a small amount
of other colors were found. The colors of the fiber shapes are 17,2%
transparent, 14,5% black and 10,9% blue microplastics, followed by 4,7% yellow
colored fibers. In fragment shapes, 21,1% transparent colors, 5,5% yellow
colors were commonly obtained and other colors were found in small amounts. The
least common granular-shaped suspected microplastics were found to be 2v blue
and 2% brown granules.
Keywords: Microplastics,
Aquaculture, European sea bass, Gastrointestinal tract.
Acknowledgment: The authors would like to thank to TUBITAK. This
research was funded by TÜBİTAK, Project No: (2535) 121N183