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Distribution Patterns and Human Exposure Risks of Microplastics in Dominant Wild Edible Shrimp: A Case Study of Haizhou Bay Marine Ranch
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Researchers surveyed microplastic contamination in dominant wild shrimp species in Haizhou Bay, China, characterizing the types, sizes, and concentrations of MPs found in their bodies and assessing the human dietary exposure risks from consuming these economically important seafood species.
“Edible wild shrimp” play a crucial role in marine ecosystems and food chains, yet research on microplastic (MP) impacts on the dominant shrimp species of the Haizhou Bay Marine Ranch remains scarce. This study examined shrimp from Haizhou Bay, evaluating the distribution, nutritional characteristics, and health risks associated with microplastics in their tissues. Analytical techniques included Fourier transform infrared spectroscopy, the hot needle method, stable isotope analysis, and microplastic risk assessment. The results revealed that microplastics comprised 40.93% of all particles identified, with Oratosquilla oratoria exhibiting the highest intestinal contamination, followed by Alpheus distinguendus. Most MPs were fibrous (86.3%), predominantly blue (57.32%), and approximately 80% consisted of Polyethylene Terephthalate. Significant interspecies differences were observed in the gastrointestinal distribution of MPs, while individuals of the same species showed no notable differences across body-length groups due to molting. The estimated daily intake and margin of exposure for human consumers remained well below the no-observed-adverse-effect level, suggesting negligible health risks. These findings provide a theoretical and empirical basis for understanding the migration, sources, and ecological implications of microplastics in shrimp, offering valuable insights for assessing nearshore environmental pollution and food web dynamics.
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Occurrence and Characteristics of Microplastics in Wild and Farmed Shrimps Collected from Cau Hai Lagoon, Central Vietnam
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Researchers measured microplastic occurrence in the gastrointestinal tracts and tissues of four shrimp species (two wild, two farmed) from a Vietnamese lagoon, finding microplastics in all species and providing baseline data on seafood plastic contamination for this region.
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Researchers assessed microplastic contamination in whiteleg shrimp from the Jiulong River estuary in China, finding five polymer types at 0.46 particles/g, with PVC comprising only 5.52% by count but contributing 98.11% of the total hazard risk index due to its toxic chemical additives. The disproportionate hazard posed by PVC despite its low abundance in farmed shrimp has direct food-safety implications, as commercially important shellfish in estuarine aquaculture systems are accumulating high-risk plastics consumed by people globally.
Microplastic contamination in seafood from Dongshan Bay in southeastern China and its health risk implication for human consumption
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Researchers investigated microplastic contamination in eight popular seafood species from Dongshan Bay in southeastern China and assessed potential human health risks. The study characterized the abundance, size, shape, and polymer type of microplastics found in the seafood samples. The findings suggest that consuming contaminated seafood represents a meaningful exposure pathway for microplastic ingestion, though the specific health implications require further study.
Microplastics in commercial bivalves from China
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Researchers analyzed microplastics in commercially sold bivalves from China, finding contamination across multiple species and geographic origins, with implications for human dietary microplastic exposure through shellfish consumption.
Evidence of Marine Microplastics in Commercially Harvested Seafood
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Researchers assessed microplastic contamination in three commercially available shrimp species purchased from supermarkets in South Australia. They found microplastics present in the digestive tracts of all species examined, with fibers being the most commonly identified type. The findings suggest that commercially harvested seafood represents a potential pathway for human dietary exposure to microplastics.
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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.