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MICROPLASTIC UPTAKE BY MUD CREEPERS (Cerithidea obtusa) AT KUKUP, JOHOR
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Researchers found that mud creeper snails (Cerithidea obtusa) from a Malaysian market contained an average of nearly half a microplastic particle each, predominantly black polyester fibers smaller than 0.6 mm. The findings confirm that microplastics can enter the human food chain through seafood consumption of these commercially sold shellfish.
Microplastics are ubiquitous in the aquatic environment.This study was conducted to determine the microplastic accumulation in Cerithidea obtusa obtained from Larkin Central Market in Johor, Malaysia.The mean concentration of microplastics was 0.444 0.111 -0.852 0.513 particles/individual.The most ingested microplastic was sized between 0.250 mm 0.593 0.694 particles/individual and the least ingested ranged in size between 0.501 mm and 1.000 mm and between 1.001 mm and 5.000 mm (0.333 0.555 particles/individual).As for the colours of the microplastics ingested, black microplastics were the most ingested at 68.09%, while the least ingested was green at 2.13%.Fibres were the dominant microplastic shape found in this study at concentrations of 0.568 0.670 particles/individual.The fibres ingested by C. obtusa were of polyethylene terephthalate (PET) origin.Based on the non-parametric test (Spearman's Correlation test), both specimen body length and soft tissue weight showed no correlation to microplastic ingestion rate (p = 0.273, p = 0.174).The results from this study will contribute to baseline knowledge on microplastic contamination of C. obtusa found in Johor, Malaysia.The study also showed that microplastics can find its way into humans through seafood consumption.
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Researchers measured microplastic abundance and characteristics in commercial bivalves from Pasir Penambang, Malaysia, and estimated human dietary exposure, finding that regular consumption of locally sold shellfish poses a notable microplastic ingestion risk.
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Microplastics were identified in the gastrointestinal tracts of mud crabs (Scylla spp.) sold in traditional markets in Semarang, Indonesia, raising food safety concerns. The study documents plastic contamination in a commercially important seafood species from mangrove ecosystems along the northern Java coast.
Evidence of Microplastics Accumulation in Selected Marine Molluscs for Consumption in The Meranti Islands of Riau Indonesia
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Researchers found microplastics — primarily fibers — in all four species of edible marine molluscs sampled from the Meranti Islands in Indonesia's Riau region, with larger individuals ingesting more plastic. Since these shellfish are consumed whole by local communities, microplastic contamination in them represents a direct pathway for human exposure through seafood.
Assessing Microplastic Contamination in Shellfish: Insights from Pantai Remis Kuala Selangor, Strait of Malacca, Malaysia
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Three commercially harvested shellfish species from Pantai Remis, Malaysia contained microplastics with varying density, color, size, and polymer composition by species, raising food safety concerns about MP exposure through seafood consumption.
Preliminary investigation of microplastic contamination in river snails (Filopaludina martensi) in Eastern Thailand and evaluation of human exposure
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Researchers investigated microplastic contamination in river snails from local markets in eastern Thailand and found an average abundance of approximately 89 particles per gram of wet tissue. The predominant microplastics were fibers and fragments smaller than 1 millimeter, primarily made of polyethylene and polypropylene. The study estimates that regular consumption of river snails could result in meaningful human intake of microplastics, raising food safety concerns.
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