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61,005 resultsShowing papers similar to Evidence of microplastics ingestion by Crassostrea gigas (Pacific oyster) at the austral Buenos Aires marine-coastal areas (Southwest Atlantic)
ClearAbundance of microplastics in oysters Crassostrea gigas and water from a highly anthropized estuary.
Researchers measured microplastic concentrations in surface water and whole tissue of Crassostrea gigas oysters at two sites in the Bahia Blanca estuary, a highly anthropized system in Argentina with major port, petrochemical, and urban wastewater inputs. MPs ranged from 6 to 50 items/L in water and 0 to 2 items/g wet weight in oyster tissue, with transparent and blue fibers predominating in both matrices.
Microplastics in bivalves, water and sediments from a touristic sandy beach of Argentina
Researchers assessed microplastic contamination in sediments, water, and two species of edible mussels at a popular beach in Argentina. They found microplastics in all samples at levels comparable to other human-impacted coastal areas worldwide, with fibers being the most common type. The study raises concerns about human exposure to microplastics through consuming locally harvested shellfish.
First multi-compartment approach to microplastics in an urbanized estuary of Argentina: The case of Magallana gigas
This first multi-compartment study of microplastics in the Bahia Blanca estuary, Argentina, simultaneously measured microplastic contamination in water, sediment, and two tissue types from the oyster Magallana gigas across three sites. Microplastics were detected in all compartments, with pollution load index analysis revealing elevated risk at sites nearest to urban and industrial activity.
First register of microplastic contamination in oysters (Crassostrea gasar) farmed in Amazonian estuaries
This is the first study to document microplastic contamination in farmed oysters from the Amazon region of Brazil, finding that 58% of the oysters contained microplastics, mainly nylon fibers. The particles accumulated most in the oysters' digestive glands and reproductive organs. Since oyster farming is an important food source and livelihood in the Amazon, the findings highlight a need for better monitoring and depuration systems to reduce human exposure to microplastics through shellfish.
Microfiber Content in Pacific Oysters (Crassostrea gigas) from Morro Bay, California
Researchers measured microfiber contamination in Pacific oysters (Crassostrea gigas) from Morro Bay, California, to assess exposure levels in a commercially important shellfish species. Microfibers were detected in oysters across sampling sites, with concentrations varying by location and season, indicating consistent exposure to synthetic fiber pollution in this coastal environment.
Low incidence of microplastic contaminants in Pacific oysters (Crassostrea gigas Thunberg) from the Salish Sea, USA
Researchers examined wild Pacific oysters (Crassostrea gigas) from the Salish Sea in Washington State and found a relatively low incidence of microplastic contamination, with approximately 63% of oysters containing microparticles at an average of about 1.75 particles per individual. The results suggest that microplastic burden in this commercially important shellfish may be lower than reported in more heavily polluted regions.
Profiling microplastic fibers in the intertidal sentinel mussel Brachidontes rodriguezii from the coast of Buenos Aires, Argentina
Researchers surveyed microplastic contamination in small mussels along the coast of Argentina's most popular resort city and found plastic particles in nearly 98% of all specimens examined. Surprisingly, the highest contamination levels were found at the least urbanized site, suggesting that agricultural runoff and local water currents, not just city pollution, play important roles in distributing microplastics. The study underscores that microplastic contamination in coastal shellfish is widespread regardless of the level of nearby urban development.
Histological characterization and morphological alterations in gill and digestive gland in non-native bivalve from the Province of Buenos Aires: spatial and seasonal evaluation
This paper is not primarily about microplastics — it characterizes tissue health in Pacific oysters from urbanized coastal areas, finding links between human activity and gill and digestive gland damage, without a microplastics focus.
Assessment of meso- and microplastics distribution in coastal sediments and waters at the middle estuary of the Rio De La Plata, Argentina (SW Atlantic Ocean)
Researchers assessed the distribution of microplastics and mesoplastics in coastal waters and sediments of the Rio de la Plata estuary in Argentina. The study found average concentrations of about 14 microplastic particles per liter in water and nearly 548 particles per kilogram in sediments, representing one of the first surveys of plastic contamination in this ecologically significant South American estuary.
Microplastic Content in Oysters (Crassostrea virginica) from South Carolina, USA
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.
Microplastic concentrations in cultured oysters in two seasons from two bays of Baja California, Mexico
Researchers measured microplastic concentrations in cultured Pacific oysters from two bays in Baja California, Mexico, across winter and summer seasons. Microfibers were the most abundant particle type found in all samples, with higher concentrations observed during winter. The study suggests that seasonal and spatial factors influence microplastic accumulation in farmed shellfish, which is relevant given that oysters are consumed whole by humans.
Microplastics and linear alkylbenzene levels in oysters Crassostrea gigas driven by sewage contamination at an important aquaculture area of Brazil
Researchers found microplastic fibers in oysters from all six farming areas surveyed in southern Brazil, with contamination levels of sewage markers and microplastics correlating with proximity to urban sewage discharge, highlighting risks to both aquaculture quality and food safety.
Spatial and temporal variation of microplastic in mussels from intertidal and subtidal banks in the Southwestern Atlantic Ocean
Researchers compared microplastic contamination in mussels from intertidal and subtidal zones along the Southwestern Atlantic coast of Argentina in 2012 and 2019. They found that 90% of all mussels examined contained microplastics, primarily blue polystyrene fibers, with higher contamination in the intertidal zone. The study underscores that filter-feeding mussels serve as reliable indicators of microplastic pollution in coastal environments.
Microplastic Concentrations in Crassotrea gigas: Establishing a Baseline of Microplastic Contamination in Oregon’s Oyster Aquacultures
This study established baseline levels of microplastic contamination in Pacific oysters (Crassostrea gigas) grown for human consumption in a coastal aquaculture operation. Establishing baselines is essential for tracking changes in contamination over time and assessing the human health implications of eating contaminated shellfish.
Evaluación De La Presencia De Microplásticos En Playas Del Río Del La Plata: Ciudad De Buenos Aires Y Alrededores
Microplastics were found in beach sediments along the Río de la Plata near Buenos Aires in both winter and spring surveys, confirming urban plastic pollution has reached coastal environments close to one of South America's largest cities.
Microplastic concentrations in two Oregon bivalve species: Spatial, temporal, and species variability
Researchers measured microplastic contamination in Pacific oysters and Pacific razor clams from 15 sites along the Oregon coast. They found microplastics in organisms from all sites, with whole oysters averaging about 11 pieces per individual, mostly fibers. This is the first study to document microplastics in Pacific razor clams and provides valuable coast-wide baseline data for comparing contamination across species, seasons, and locations.
Microplastic in cultured oysters from different coastal areas of China
Researchers quantified microplastics in oysters from 17 coastal sites across China, finding contamination at every location with an average of 2.93 particles per gram of tissue. The most common types were fibers and fragments, and the study highlights the potential for human dietary exposure to microplastics through seafood consumption.
Assessing urban microplastic pollution in a benthic habitat of Patagonia Argentina
Researchers assessed microplastic pollution in benthic environments near Puerto Madryn, Patagonia, finding microplastics present in mussels, small fishes, and bottom water at all sampled sites, with average concentrations of 1.6 items per gram wet weight in fish and 10.5 items per liter in bottom water.
Microplastic contamination in filter-feeding oyster Saccostrea cuccullata: Novel insights in a marine ecosystem
Researchers examined microplastic contamination in the filter-feeding oyster Saccostrea cuccullata collected from five coastal sites. They found microplastics present in all oyster specimens, with fibers and fragments being the most common types detected. The study highlights how filter-feeding shellfish can accumulate microplastics from surrounding waters, raising concerns about contamination in marine food chains.
Microplastics in the European native oyster, Ostrea edulis, to monitoring pollution-related patterns in the Solent region (United Kingdom)
This is the first study to examine microplastic contamination in the European flat oyster, finding microplastics present in every oyster sampled from the Solent region in southern England. Researchers detected particles in both gill and digestive tissues, with fibers being the most common type. The study raises concerns about shellfish as a pathway for human microplastic exposure, since oysters are commonly consumed as whole organisms.
Assessing Microplastic Contamination and Depuration Effectiveness in Farmed Pacific Oysters (Crassostrea gigas)
Researchers assessed microplastic contamination in farmed Pacific oysters from Portugal's Lima estuary and tested whether commercial and laboratory depuration reduces microplastic levels. Contamination was higher in autumn than winter, all microplastics found were fibers (polyethylene terephthalate dominant), and depuration reduced but did not eliminate microplastic loads.
Occurrence of microplastics and heavy metals accumulation in native oysters Crassostrea Gasar in the Paranaguá estuarine system, Brazil
Researchers examined native oysters from the Paranagua estuarine system in Brazil for both microplastic contamination and heavy metal accumulation. They found high levels of microplastics in all oyster samples, along with elevated concentrations of several heavy metals, and observed potential interactions between the two pollutant types. The study raises concerns about the combined exposure risks from microplastics and heavy metals in seafood harvested from polluted estuaries.
Microplastic in oysters: A review of global trends and comparison to southern Australia
Researchers reviewed global studies on microplastics in oysters and conducted their own sampling across eight sites in southern Australia. Globally, 94.4% of oysters contained microplastics, and the study found that wild-caught oysters contained more than double the microplastics of farmed specimens, likely because aquaculture operations tend to be located in cleaner waters.
Microplastics in gut contents of coastal freshwater fish from Río de la Plata estuary
Microplastics were found in 100% of gut contents sampled from coastal freshwater fish in the Rio de la Plata estuary in South America, with fibers making up nearly all of the plastic found. Contamination was highest near sewage outfalls, linking microplastic ingestion directly to inadequate wastewater treatment.