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Microplastic contents from maricultured and natural mussels
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Researchers compared microplastic content in maricultured and wild mussels from Italian waters and found no significant difference between the two sources, with all recovered particles being filaments. The study estimates that consuming raw mussels could result in a median intake of 6 to 7 microplastic items per gram, highlighting a consistent route of human dietary exposure regardless of whether mussels are farmed or wild-caught.
Results of this research focuses on microplastic contents (levels, type, size, colour) in maricultured and natural mussels (Mytilus galloprovincialis) from different Italian stocks. No significant differences were found among maricultured and natural stocks. All recovered MPs are filaments ranging within 750-6000 μm of maximum length (average values 1150-2290 μm). Feeding raw mussel could produce median MP intakes of 6.2-7.2 items/g w.w. Concerning human exposure by diet, both raw and cooked values are important. Some preliminary tests performed in this study evidenced that the cooking process determined lower MPs levels (-14%) in cooked tissues compared to raw ones, MPs were recorded in cooking water and were characterized by a lower size than in raw mussels. Results obtained by this study represent an important baseline on MPs level to evaluate environmental and human exposure risks by diet.
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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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Scientists analyzed commercially sold mussels from markets in southern Italy and found microplastics in every sample tested. On average, each mussel contained about 1.6 plastic particles, with fibers being the most common type, followed by fragments. Since mussels are eaten whole by consumers, the findings highlight a direct pathway for human exposure to microplastics through seafood.
Microplastics in mussels sampled from coastal waters and supermarkets in the United Kingdom
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Researchers measured microplastic contamination in mussels from U.K. coastal waters and supermarkets and found anthropogenic debris in every sample tested. Wild mussels contained up to 2.9 debris items per gram of tissue, while supermarket mussels showed lower but still consistent contamination levels. The study confirms that microplastics are prevalent in commercially available shellfish, representing a direct pathway for human dietary exposure.
Microplastics in Mediterranean Mussel Mytilus galloprovincialis: Comparison between Cultured and WildType Mussels from the Northern Adriatic
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Researchers assessed microplastic contamination in the digestive glands of Mediterranean mussels collected from pristine, aquaculture, and port areas along the northern Adriatic coast. The highest contamination was found in mussels from a Croatian marina, with the smallest particles in the 5-to-10-micrometer range being the most prevalent. The study highlights that mussels accumulate microplastics regardless of their environment, with port areas showing notably higher contamination levels.
Preliminary survey on the occurrence of microplastics in bivalve mollusks marketed in Apulian fish markets
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Researchers surveyed mussels and oysters sold at fish markets in the Apulia region of Italy and found microplastics present in all samples tested. Mussels contained nearly three times more plastic debris than oysters, with small fragments under 500 micrometers being the most common. The findings raise food safety concerns because these shellfish are typically consumed whole, meaning all ingested microplastics are passed directly to the consumer.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.