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Ingested microplastics: a comparative analysis of contaminated shellfish from two sites in the Makassar Strait
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Scientists compared microplastic contamination in shellfish from two sites in the Makassar Strait in Indonesia, finding microplastics in all samples tested. The types and amounts of microplastics varied between locations based on local oceanographic conditions and human activity. Since these shellfish are commonly eaten by local populations, the findings raise concerns about microplastic exposure through seafood consumption in the region.
Marine plastic debris, particularly microplastics (MPs), is an urgent and significant threat to the global marine environment. The emergence of MPs in the marine environment and their potential presence in human-consumed seafood necessitates immediate investigation. In light of this, a study was conducted on the occurrence of MPs in shellfish collected from two locations in Makassar Strait with distinct oceanographic conditions. Three commonly consumed shellfish species (Perna viridis, Meretrix meretrix, and Mactra chinensis) were collected by fishermen and examined for microplastic contamination, with a total sample size of 170 individuals. Microplastics were extracted from the soft tissue of the bivalves using the alkaline digestion method. The results revealed a significantly higher number of microplastics ingested by P. viridis and M. chinensis in samples collected from the Sanrobengi Islands (14.64 MPs/individual and 2.29 MPs/individual, respectively), compared to the P. viridis and M. meretrix from Mandalle coastal area (0.70 MPs/individual and 1.00 MPs/individual, respectively). The predominant microplastic form detected was blue microfibres. A prevalence of MP contamination between 58 and 100% and the results of Fourier Transform Infrared Spectroscopy (FTIR) analysis indicated that polystyrene was the dominant polymer present, threatening the welfare of the bivalve mollusks and posing potential health risks to seafood consumers. The results emphasize the urgent need for pollution control measures such as reducing plastic waste discharges and improving waste management systems. In addition, a comprehensive study focusing on the long-term ecological and health effects of microplastic pollution is necessary to guide future policy interventions.
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Microplastic Contamination in Edible Bivalves and Associated Environmental Health Risks in Coastal Makassar, Indonesia
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Researchers found tiny plastic particles (microplastics) inside edible shellfish harvested from the coast of Makassar, Indonesia, a city where plastic pollution is high and people eat a lot of shellfish. This matters because when you eat contaminated shellfish, you may also be swallowing these plastic particles, raising concerns about potential long-term health effects that scientists are still working to fully understand.
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Researchers surveyed microplastic contamination in coastal sediments and cockles along the East Java coast of Indonesia and assessed the potential health risks from consuming the shellfish. They found microplastics, predominantly fibers and fragments, in all sediment and cockle tissue samples, with consumers potentially ingesting tens of thousands of microplastic particles per year. The findings raise concerns about dietary microplastic exposure for communities that regularly eat shellfish from these waters.
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Researchers compared microplastic contamination levels in commercial shellfish from northern (Qingdao) and southern (Xiamen) China, finding microplastics in 70-100% of samples. The study assessed potential human health risks from consuming contaminated shellfish, with microplastic abundances varying across species and geographic locations.
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