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Presence of microplastics in water column and tissue of farmed mussel (Mytilus galloprovincialis) in Slovenian sea
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Researchers found microplastics and micro-debris in all water samples and 75.7% of mussels from three Slovenian sea farming sites. The highest concentrations appeared in surface waters at one site, raising concerns about microplastic contamination in commercially farmed shellfish.
V magistrskem delu smo želeli ugotoviti, katera lokacija v slovenskem morju je najbolj primerna za intenzivno gojenje školjk klapavic (Mytilus galloprovincialis) s stališča prisotnosti mikroplastike in na kateri globini so klapavice najmanj podvržene njenemu vplivu. Analizirali smo mikroodpadke, vključujoč mikroplastiko, v vzorcih morske vode ter školjkah iz školjčišč na Debelem rtiču, Seči in Strunjanu. Morsko vodo smo vzorčili z bencinsko črpalko ter na plovilu filtrirali prečrpano vodo na situ s porami 100 µm (vzorčenje in-situ). Na posameznem vzorčnem mestu smo prečrpali tri paralelne vzorce 1 m3 morske vode na dveh globinah. Skupno smo analizirali filtrate 18 m3 morske vode. Poleg morske vode smo na globini vzorčenja vode odvzeli školjke klapavice, in sicer petdeset školjk na posamezni globini. Analizirali smo torej skupno tristo školjk, sto školjk iz vsakega od treh školjčišč. Prisotnost mikroodpadkov in mikroplastike smo potrdili v vseh vzorcih vode. Z najvišjimi koncentracijami mikroodpadkov je izstopala zgornja vzorčna plast školjčišča na Debelem rtiču. Mikroodpadke smo našli v kar 75,7 % školjk. Najvišje povprečno število mikroodpadkov na školjko smo ugotovili pri školjkah iz školjčišča v Strunjanu.
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This Croatian thesis examined microplastic content in Mediterranean mussels from three locations along the Croatian Adriatic coast. Researchers found microplastics in both wild and farmed mussels, with fragment and fiber types identified across all sampling sites.
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Researchers developed a versatile analytical approach to evaluate the occurrence of microfibers in mussels (Mytilus galloprovincialis) collected from the Tyrrhenian Sea, finding fibrous microplastics to be the most abundant form of micro-debris in both the environment and the bivalves sampled.
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Researchers compared microplastic contamination in wild and commercially farmed mussels from the Sea of Marmara in Turkey. They found microplastics in all mussel samples, with wild mussels containing somewhat different types and amounts compared to aquacultured ones, and fibers being the dominant form in both. The study estimates that regular consumption of these mussels represents a measurable pathway for human exposure to microplastics through seafood.
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