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61,005 resultsShowing papers similar to Microplastics and low tide warming: Metabolic disorders in intertidal Pacific oysters (Crassostrea gigas)
ClearMicroplastics and warming: Metabolic disorders in Pacific oysters (Crassostrea gigas) from the intertidal zone
Researchers exposed intertidal Pacific oysters (Crassostrea gigas) to environmentally realistic concentrations of polystyrene microplastic beads (0.025 and 25 µg/L) under simulated tidal cycling, then analyzed gill and digestive gland metabolomes by 1H-NMR spectroscopy at multiple time points. Initial results showed that neither MP exposure nor short-term warming significantly altered the oyster metabolome under the tested conditions.
Oxidative and metabolic responses in Crassostrea gasar under combined stressors of elevated temperature and microplastic exposure
Researchers exposed oysters (Crassostrea gasar) to polystyrene microplastics at different temperatures to assess their combined effects on oxidative stress and energy metabolism. The study found that both gills and digestive glands accumulated microplastics regardless of temperature, and that the combination of thermal stress and microplastic exposure produced distinct patterns of oxidative stress and metabolic disruption compared to either stressor alone.
Toxic effects of exposure to microplastics with environmentally relevant shapes and concentrations: Accumulation, energy metabolism and tissue damage in oyster Crassostrea gigas
Researchers exposed oysters to irregularly shaped polyethylene and PET microplastics at two concentrations for 21 days and measured accumulation, energy metabolism, and tissue damage. They found that the microplastics accumulated in oyster tissues, disrupted energy metabolism, and caused histological damage, with effects varying by polymer type and concentration. The study suggests that environmentally realistic microplastic shapes and concentrations can cause measurable harm to commercially important shellfish species.
Combined effects of salinity and polystyrene microplastics exposure on the Pacific oysters Crassostrea gigas: Oxidative stress and energy metabolism
Researchers studied how salinity levels affect the toxicity of polystyrene microplastics in Pacific oysters and found that low salinity reduced microplastic uptake but created complex interactions with oxidative stress and energy metabolism. Smaller microplastics generally caused more biological disruption than larger ones across all salinity conditions. This is important because coastal oyster habitats frequently experience salinity changes, and the findings suggest environmental conditions can alter how harmful microplastics are to shellfish.
Effects of ocean acidification and polystyrene microplastics on the oysters Crassostrea gigas: An integrated biomarker and metabolomic approach
Researchers exposed oysters to polystyrene microplastics of two sizes under both normal and acidified ocean conditions to simulate climate change. They found that ocean acidification and microplastics interacted in complex ways, with smaller microplastics under acidic conditions altering the oysters' metabolic profiles in their digestive organs. This study highlights that climate change may change how microplastics affect the shellfish many people eat.
Do Environmentally Relevant Concentrations of Microplastics Pose a Threat to the Eastern Oyster, Crassostrea Virginica?
This study exposed eastern oysters to polyester microfibers at environmentally realistic concentrations for 45 days, finding that even low doses affected their physiology including feeding, growth, and energy use. The results suggest that ecologically relevant microplastic levels may pose a threat to commercially important filter-feeding shellfish.
"Groundbreaking study: Combined effect of marine heatwaves and polyethylene microplastics on Pacific oysters, Crassostrea gigas"
Researchers studied the combined effects of marine heatwaves and polyethylene microplastics on Pacific oysters, an important aquaculture species. They found that elevated temperatures and microplastic exposure together caused greater stress responses than either factor alone, affecting the oysters' immune function and energy reserves. The study highlights the growing ecological risk from multiple environmental stressors acting simultaneously on marine organisms.
Metabolic profiles and protein expression responses of Pacific oyster (Crassostrea gigas) to polystyrene microplastic stress
Researchers exposed Pacific oysters to polystyrene microplastics for 21 days and found the particles caused oxidative stress and disrupted the oysters' metabolism, particularly amino acid processing. Different microplastic concentrations triggered different metabolic changes in the oysters. Since oysters are a popular seafood, these findings raise questions about food safety and whether microplastic-stressed shellfish could affect consumer health.
Oysters under anthropogenic pressure: A cellular perspective on the interactive effects of microplastic pollution and climate change
Researchers exposed oysters to microplastics under combined conditions of elevated temperature and ocean acidification, finding that climate change stressors significantly altered the cellular response to MP pollution. Temperature had a stronger effect than acidification, and combined stressors produced non-additive interactions in immune and oxidative stress markers.
The physiological response of the clam Ruditapes philippinarum and scallop Chlamys farreri to varied concentrations of microplastics exposure
Researchers exposed two types of shellfish (clams and scallops) to polyethylene and PET microplastics and found that both species accumulated the particles in their digestive glands and gills. The exposure caused oxidative stress, disrupted energy and fat metabolism, and damaged tissue, with PET generally being more toxic than polyethylene. Since these are commonly eaten shellfish, the findings raise concerns about microplastic contamination affecting the safety of seafood for human consumers.
Toxic effects of exposure to polymethyl methacrylate and polyvinyl chloride microplastics in Pacific oysters (Crassostrea gigas)
Researchers exposed Pacific oysters to two types of microplastics and found significant signs of oxidative stress, DNA damage, and metabolic disruption after 30 days. Polymethyl methacrylate microplastics caused the most severe effects, reducing a key protective enzyme by 59% and triggering the highest levels of DNA damage markers. The study provides important toxicological data showing that different plastic types can have varying degrees of harm on marine shellfish.
Microplastics Affect Energy Balance and Gametogenesis in the Pearl Oyster Pinctada margaritifera
Pearl oysters exposed to microplastics showed disrupted energy metabolism and impaired gametogenesis, suggesting that plastic pollution could threaten the reproductive success of marine bivalves used in pearl farming. The findings have economic as well as ecological implications, given that pearl farming is a major industry in tropical Pacific island nations.
Responses of Antioxidant Markers and Valve Activity of the Brackish Water Clam Corbicula Japonica Under Single/combined Exposures of Polystyrene Microplastics and Thermal Stress
Researchers exposed the brackish water clam Corbicula japonica to polystyrene microplastics at 200 μg/L and at two temperatures (20°C and 25°C), finding that thermal stress altered valve activity and antioxidant responses, with warmer temperatures increasing microplastic ingestion and changing oxidative damage patterns.
The effect of climate change and microplastics on the physiology of marine invertebrates of economic interest
This thesis examines how climate change and microplastic pollution interact to affect the physiology of marine invertebrates important for aquaculture. Combined stressors were found to have compounding effects on organisms like mussels and oysters, threatening both ecosystems and food security.
Intergenerational effects of environmentally-aged microplastics on the Crassostrea gigas
Researchers exposed adult oysters to environmentally aged aquaculture microplastics for two months and found increased mortality, oxidative stress, and environmental stress biomarker responses. Offspring from exposed parents showed reduced swimming activity, developmental abnormalities, and growth impairment in their larval stage. The study provides evidence that microplastic exposure can have intergenerational effects on shellfish health and development.
Microplastics exposure in European flat oyster, Ostrea edulis: Evaluation of accumulation and depuration under controlled conditions and molecular assessment of a set of reference genes
Researchers evaluated microplastic accumulation and effects in European flat oysters under controlled exposure conditions, examining how filter feeding concentrates plastic particles and whether ingestion impairs oyster health. Exposure resulted in measurable microplastic accumulation in oyster tissue, with effects observed on feeding behavior and physiological condition.
Polystyrene microplastics photo-aged under simulated sunlight influences gonadal development in the Pacific oyster
Researchers found that polystyrene microplastics aged by simulated sunlight harmed the reproductive development of Pacific oysters, reducing gonad size and disrupting sex hormones. Female oysters were especially affected, with altered energy allocation and significant changes in genes related to reproductive development. Since most microplastics in the ocean have been weathered by sunlight, these findings suggest that real-world microplastic exposure may pose a greater threat to shellfish reproduction than laboratory tests with fresh plastics indicate.
Adaptive response of triploid Fujian oyster (Crassostrea angulata) to nanoplastic stress: Insights from physiological, metabolomic, and microbial community analyses
Researchers exposed triploid Fujian oysters to nanoplastics for 14 days and studied their physiological, metabolic, and microbial responses. They found that the oysters showed strong adaptive capacity, adjusting their metabolism and gut microbial communities to cope with nanoplastic stress. The study provides important insights into how shellfish respond to increasing nanoplastic pollution in ocean environments.
Are microplastics impacting shellfish?
Researchers investigated whether microplastic contamination measurably impacts shellfish physiology, growth, reproduction, and health outcomes, assessing the ecological and food safety implications of microplastic exposure in commercially and ecologically important bivalve species.
Microplastics can aggravate the impact of ocean acidification on the health of mussels: Insights from physiological performance, immunity and byssus properties
Researchers found that the combination of ocean acidification and microplastic exposure weakened mussel immune systems, reduced feeding performance, and degraded the quality of byssus threads used for attachment. The study suggests that co-occurring ocean acidification and microplastic pollution could increase the vulnerability of bivalves to disease and dislodgement, threatening their survival in future marine environments.
Impact of polyethylene microplastics on the clam Ruditapes decussatus (Mollusca: Bivalvia): examination of filtration rate, growth, and immunomodulation
Researchers exposed clams to polyethylene microplastics at three different concentrations for 14 days and measured the effects on feeding, growth, and immune function. They found that higher microplastic concentrations reduced the clams' ability to filter water and caused weight loss, while also disrupting immune cell integrity. The study demonstrates that microplastic pollution can impair both the feeding efficiency and immune defenses of shellfish.
Each temperature degree counts: warming enhances polystyrene nanoplastic toxicity via metabolic disruption in a marine cellular model
This study examined how elevated water temperatures — simulating marine heatwaves — amplify the toxicity of polystyrene nanoplastics in marine cells, finding that warming enhanced metabolic disruption caused by nanoplastics. The results suggest climate change and plastic pollution interact synergistically to harm marine organisms.
Marine mussel metabolism under stress: Dual effects of nanoplastics and coastal hypoxia
This study examined how nanoplastics and low oxygen levels together affect marine mussels, finding that both stressors disrupted the animals' internal balance and energy metabolism. The combination of nanoplastics and oxygen-depleted water was more harmful than either stressor alone, damaging cellular defenses against oxidative stress. Since mussels are widely consumed as seafood, these findings raise questions about the safety of shellfish harvested from polluted, oxygen-poor coastal waters.
Warming-induced microplastic accumulation and physiological toxicity in fiddler crabs
Researchers studied the combined effects of microplastic exposure and rising water temperatures on fiddler crabs. They found that microplastics accumulated most heavily in the gills, and that warmer temperatures altered how the crabs responded to the plastic particles, increasing oxygen consumption and affecting antioxidant defenses. The study highlights how climate change and plastic pollution together may create compounding stress for coastal marine organisms.