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Quantity and types of microplastics in the organic tissues of the eastern oyster Crassostrea virginica and Atlantic mud crab Panopeus herbstii from a Florida estuary
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Eastern oysters and mud crabs from a Florida estuary were found to contain microplastics in their soft tissues, with fibers as the dominant type, while water samples confirmed ongoing microplastic inputs from the surrounding watershed. The study documents microplastic bioaccumulation in both a commercially important bivalve and a key benthic predator in a US Atlantic coast estuary.
This study determined the quantity and diversity of microplastics in water and soft tissues of eastern oysters (Crassostrea virginica) and Atlantic mud crabs (Panopeus herbstii) in Mosquito Lagoon, a shallow, microtidal estuary along the east coast of central Florida. One-liter water samples had an average of 23.1 microplastic pieces (n = 15). Crabs (n = 90) had an average of 4.2 pieces in tissues/individual plus an average of 20.3 pieces/individual temporarily entangled in exposed surfaces and released within 5 days in tanks. Adult oysters (n = 90) had an average of 16.5 microplastic pieces/individual. Fibers, mostly royal/dark blue in color, dominated our collections. When compared per gram of tissue, crabs had two orders of magnitude more microplastic pieces than oysters. Our numbers were higher than previous studies on invertebrate microplastics; this is potentially the result of extensive urbanization, limited flushing, and intensive recreational usage of Mosquito Lagoon.
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Investigating the Quantity and Types of Microplastics in the Organic Tissue of Oysters and Crabs in the Indian River Lagoon
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Researchers quantified microplastics in the tissues of eastern oysters and Atlantic mud crabs collected from South Carolina estuaries, documenting plastic types and abundances in these commercially and ecologically important species and contributing to understanding human dietary exposure from consuming shellfish.
Microplastic Content in Oysters (Crassostrea virginica) from South Carolina, USA
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Researchers analyzed microplastic content in oysters, water, and sediments from four estuaries in South Carolina, USA, quantifying contamination levels across these matrices in the commercially important Eastern oyster Crassostrea virginica.
MICROPLASTICS FOUND IN THE EASTERN OYSTER (Crassostrea virginica) AND THE SURROUNDING ENVIRONMENT
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Eastern oysters and surrounding water and sediment samples were collected from a US estuary and analyzed for microplastic content. Microplastics were found in both oysters and environmental matrices, though the oysters did not accumulate particles proportionally to environmental concentrations, suggesting selective ingestion. The study contributes to understanding how commercially important bivalves interact with microplastics in their natural habitat and what this means for seafood safety.
Macroecotoxicological approaches to emerging patterns of microplastic bioaccumulation in crabs from estuarine and marine environments
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Smaller, shorter-lived crabs and those from estuarine intertidal/muddy habitats accumulated significantly more microplastics, with burrowing species holding more particles than omnivorous ones. Crabs at lower latitudes -- likely due to mangrove trapping effects -- and non-human-consumed species showed higher microplastic loads, with colorless PA, PP, and PET fibers (1-5 mm) predominating.
Quantifying Spatial and Temporal Trends of Microplastic Pollution in Surface Water and in the Eastern Oyster Crassostrea virginica for a Dynamic Florida Estuary
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Researchers monitored microplastic pollution in surface waters and tissues of the eastern oyster Crassostrea virginica across 35 sites in Florida's Indian River Lagoon over one year using microscopy and ATR-FTIR, quantifying spatial and temporal variability in MP abundance and identifying factors influencing distribution patterns in this dynamic estuarine system.
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