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Diversity and characteristics of microplastics in bivalves from Tam Giang Lagoon
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This study found microplastics in all three bivalve species sampled from Vietnam's Tam Giang Lagoon—one of Southeast Asia's largest lagoon systems—with clams carrying the highest total proportion and green mussels showing the highest concentration per gram of tissue. Because bivalves are widely consumed in the region, their contamination represents a direct pathway for human microplastic ingestion.
This study examines the diversity and characteristics of microplastic (MP) contamination in bivalve mollusks collected from the Tam Giang Lagoon, Vietnam-one of Southeast Asia's largest lagoon systems. A total of 52 specimens representing three species-mussels (Sinanodonta woodiana), green mussels (Perna viridis), and clams (Corbicula subsulcata)-were analyzed, yielding 457 MP particles. Clams contributed the highest proportion (50.55%), followed by green mussels (33.48%) and mussels (15.97%). The average MP density was 3.17 MP particles/g in green mussels, 3.04 MP particles/g in clams, and 0.42 MP particles/g in mussels. Conversely, when normalized per individual, mussels exhibited the highest accumulation (12.17 MP particles/individual), followed by green mussels (10.20 MP particles/individual) and clams (7.45 MP particles/individual), showing a positive correlation between MP density and organism size. Fibers dominated all samples (64.07-84.31%), while fragments were less frequent and pellets were absent. Most MPs were smaller than 0.5 mm, and black was the predominant color in all species. These findings highlight distinct species-specific accumulation patterns likely driven by habitat characteristics, filtration capacity, and feeding behavior. Overall, this research provides essential baseline data on microplastic pollution in the Tam Giang Lagoon and underscores the ecological significance of bivalves as bioindicators of sediment-associated MP contamination in coastal ecosystems.
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Researchers analysed microplastic contamination in three bivalve species from Tam Giang Lagoon in Vietnam, finding 291 MP particles across 36 specimens, with clams showing the highest burden (67% of total MPs). The findings indicate significant human dietary MP exposure from lagoon bivalves and call for monitoring of this food source.
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Researchers found microplastics in four types of commonly eaten shellfish from coastal lagoons in Central Vietnam, with an average of 0.3 to 0.9 particles per gram of tissue. Fibers were the most common shape, and the estimated weekly human intake from eating these shellfish ranged from about 56 to 486 particles. The study highlights that regular seafood consumption in coastal communities provides a direct route for microplastic exposure in the human diet.
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Microplastic contamination was assessed in commercially harvested clams from aquaculture farms in coastal Vietnam, a country where microplastic impacts on aquaculture are poorly understood. Both vertebrates and invertebrates in coastal areas were found to ingest microplastics, raising concerns about food safety in Vietnamese seafood.
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Researchers conducted a preliminary determination of microplastics in four bivalve species from Phu Yen, central Vietnam, detecting MPs in clams, ark clams, oysters, and green mussels commonly consumed by local populations.
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Researchers analyzed microplastic accumulation in five common bivalve species collected from aquaculture areas along the coast of Vietnam, finding microplastics in all samples with an average of about 10.84 items per individual. Fibers were the most common shape, concentrated in gills and digestive glands, and a risk assessment suggested potential implications for human health through seafood consumption.
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