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Fish Fauna and Microplastic Pollution in Two Rivers in Fukui Prefecture
Summary
This study evaluated the occurrence of microplastics in commercially processed seafood products, including canned fish, smoked salmon, and dried shrimp, detecting particles in a majority of tested products. The contamination was attributed to processing environments and packaging materials as well as residual particles in raw seafood, indicating multiple potential entry points.
In this study, the fish fauna and microplastic pollution in two rivers in Fukui Prefecture were investigated for the purpose of increasing the number and diversity of fishes. It was found that there is a difference in the fish fauna between Hino River and Eiheiji River, even if both rivers are tributaries of the Kuzuryu River system. The analysis of microplastics in sweetfish in Hino and Kuzuryu River showed that they were not present at all, implying that there is little microplastic pollution in fishes in Fukui Prefecture. Continuous monitoring is needed to grasp the situation and improve the river environment.