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61,005 resultsShowing papers similar to Size-dependent elimination of ingested microplastics in the Mediterranean mussel Mytilus galloprovincialis
ClearAn assessment of the ability to ingest and excrete microplastics by filter-feeders: A case study with the Mediterranean mussel
Mediterranean mussels (Mytilus galloprovincialis) were exposed to spherical polystyrene microplastics of different sizes and concentrations and examined for tissue-level effects and ingestion/egestion dynamics, with smaller particles showing greater retention and histological changes in digestive tissue. The study provides detailed pathophysiological evidence that MP size governs both retention time and the severity of tissue-level effects in marine filter feeders.
Depuration kinetics and accumulation of microplastics in tissues of mussel Mytilus galloprovincialis
This study tracked how mussels take in, accumulate, and eventually expel microplastics of different sizes over time. Larger microplastics accumulated more in the gills and digestive gland, while smaller particles spread more widely through the body. Since mussels are popular seafood eaten whole, understanding how they retain microplastics helps estimate how much plastic people may be consuming through shellfish.
Ingestion of nano/micro plastic particles by the mussel Mytilus coruscus is size dependent
Researchers investigated how the thick shell mussel Mytilus coruscus ingests plastic particles of different sizes, ranging from 70 nanometers to 100 micrometers. They found that smaller particles were ingested in greater quantities and accumulated primarily in the digestive tract, while particles also translocated to the mantle tissue over time. The study demonstrates that plastic particle ingestion by mussels is strongly size-dependent, with smaller particles posing a greater accumulation risk.
Insights into the uptake, elimination and accumulation of microplastics in mussel
Researchers investigated how mussels take up, eliminate, and accumulate high-density polyethylene microplastics smaller than 22 micrometers. They found that mussels cleared microplastics at the same rate as similarly sized food particles, but smaller particles (under 6 micrometers) were retained much longer in the digestive gland. After six days of depuration, about 85 percent of ingested microplastics were eliminated, but 2 to 6 percent remained embedded in digestive tissue, indicating that small microplastics can accumulate in filter-feeding organisms.
Microplastic evacuation in fish is particle size‐dependent
Microplastic retention time in fish was found to depend on particle size, with larger particles being evacuated more slowly than smaller ones, providing empirical data to interpret gut burden studies and better understand chronic exposure dynamics.
Ingestion and egestion of polystyrene microplastic fragments by the Pacific oyster, Crassostrea gigas
Researchers investigated size-specific ingestion and egestion of polystyrene microplastic fragments by Pacific oysters, finding that oysters can ingest and later expel microplastics, with the process varying by particle size.
Effects of food presence on microplastic ingestion and egestion in Mytilus galloprovincialis
The presence of the microalga Dunaliella salina as food significantly reduced egestion of polyethylene microplastics in the mussel Mytilus galloprovincialis, with a single feeding episode preventing over 40% of MPs from being expelled over 24 hours. The finding suggests food presence causes microplastics to persist longer in mussel tissues, increasing exposure duration.
Determining the Properties that Govern Selective Ingestion and Egestion of Microplastics by the Blue Mussel (Mytilus edulis) and Eastern Oyster (Crassostrea virginica)
Researchers examined how particle properties govern selective ingestion and egestion of microplastics by blue mussels and eastern oysters, finding that bivalves selectively process different microplastic types based on physicochemical characteristics and size.
The fate of microplastics during uptake and depuration phases in a blue mussel exposure system
A controlled exposure system tracked the fate of polystyrene microplastic beads in blue mussels during uptake and depuration phases, showing that mussels accumulated beads in the digestive gland and that depuration cleared most but not all particles over 24 hours. The mass balance approach provides a rigorous method for quantifying microplastic retention in bivalves.
Dynamic of small polyethylene microplastics (≤10 μm) in mussel's tissues
Mussels were exposed to a single dose of irregularly shaped HDPE particles (mainly ≤10 μm) followed by 7-day depuration, with particles accumulating in the digestive gland and gills over time and smaller fractions (≤4 μm) showing translocation from the digestive system to the gills. The study demonstrates that the smallest microplastic fractions persist longer and translocate to secondary tissues in bivalves.
Ingestion and Toxicity of Polystyrene Microplastics in Freshwater Bivalves
Researchers investigated microplastic ingestion in the freshwater mussel Dreissena polymorpha using polystyrene spheres of various sizes. They found that mussels rapidly ingested microplastics and that body burden was influenced by exposure time, body size, food abundance, and microplastic concentration, providing important baseline data on how freshwater bivalves interact with microplastic pollution.
Effect of size continuum from nanoplastics to microplastics on marine mussel Mytilus edulis: Comparison in vitro/in vivo exposure scenarios
Researchers compared the effects of nanoplastics versus microplastics on marine mussels using both in vivo and in vitro approaches, finding that smaller plastic particles caused greater cellular and physiological impacts across the size continuum.
Size-dependent effects of microplastics on intestinal microbiome for Perna viridis
Researchers found that the size of microplastic particles determines how they change the gut bacteria of green mussels, with the smallest particles causing the most disruption to beneficial bacteria and promoting potentially harmful species. Since mussels are widely consumed as seafood, changes to their gut health and the bacteria they carry could affect human food safety.
Selective Ingestion and Egestion of Plastic Particles by the Blue Mussel (Mytilus edulis) and Eastern Oyster (Crassostrea virginica): Implications for Using Bivalves as Bioindicators of Microplastic Pollution
Blue mussels and eastern oysters were found to selectively ingest and egest microplastic particles based on size and composition, with both species showing preferences that differed from random ingestion. The selective behavior affects how reliably these bivalves can be used as bioindicators of microplastic pollution, since their gut contents may not proportionally reflect ambient plastic concentrations.
Microplastics uptake and egestion dynamics in Pacific oysters, Magallana gigas (Thunberg, 1793), under controlled conditions
Pacific oysters were exposed to polystyrene microplastics under controlled conditions to characterize uptake, egestion via faeces, and rejection via pseudofaeces, finding that ingestion increased with MP concentration while pseudofaeces was the dominant clearance route. The study quantifies the dynamics of MP retention in a commercially important bivalve and highlights the potential for MP entry into the human food chain.
Exposure to low-density polyethylene microplastic particles: presence in Mytilus edulis tissues and pseudofeces
Researchers exposed blue mussels to low-density polyethylene microplastics at different concentrations for up to 56 days and found particles in gills, intestinal lumens, and digestive tissues. Mussels also expelled plastic particles in their pseudofeces, demonstrating both uptake and a partial clearance mechanism for microplastic exposure in filter feeders.
Size-Based Ingestion of Microspheres and Microfibers by Two Freshwater Mussel Species (Dreissena bugensis and Elliptio complanata): Implications for Removal of Microplastic Particles from Aquatic Systems
Researchers investigated size-based ingestion of microspheres and microfibers by two freshwater mussel species, the quagga mussel Dreissena bugensis and Elliptio complanata, to evaluate their potential for removing microplastics from aquatic systems. They found that ingestion and rejection patterns varied by particle shape and size, with implications for using suspension-feeding bivalves as natural microplastic filters.
The gut retention time of microplastics in barnacle naupliar larvae from different climatic zones and marine habitats
This study tested how quickly barnacle nauplius larvae from different climatic zones and habitats ingested and expelled microplastic beads, finding that gut retention time varied by larval size and microplastic size. Understanding how long microplastics remain in zooplankton guts is important for assessing how much plastic is transferred up the food chain through feeding.
Exposure to Polymethylmethacrylate Microplastics Induces a Particle Size-Dependent Immune Response in Mediterranean Mussel Mytilus galloprovincialis
Researchers found that polymethylmethacrylate microplastics induced size-dependent immune responses in Mediterranean mussels, with 10-micrometer particles causing greater immunomodulatory effects than 50-micrometer particles on hemocyte function and inflammatory markers.
Metabolic responses of the marine mussel Mytilus galloprovincialis after exposure to microplastics of different shapes and sizes
Researchers exposed Mediterranean mussels to microplastics of different shapes and sizes and found that round particles and small fibers accumulated the most in mussel tissues. These same particle types caused the most significant metabolic changes, altering amino acid processing and vitamin pathways. The findings suggest that the shape and size of microplastics play an important role in determining how much harm they cause to marine filter-feeding organisms.
The Mediterranean Mussel Mytilus galloprovincialis as a Biomonitor for Microplastic Pollution
Researchers assessed the Mediterranean mussel Mytilus galloprovincialis as a bioindicator for microplastic pollution, focusing on improving quantification of small microplastics below 25 µm that conventional methods miss. Mussels were found to accumulate microplastics efficiently across size ranges, validating their use as biomonitors while highlighting the need for improved analytical methods.
Size dependent egestion of polyester fibres in the Dublin Bay Prawn (Nephrops norvegicus)
Researchers investigated the retention and egestion of polyester microplastic fibres in three sizes (3, 5, and 10 mm) in the Dublin Bay Prawn (Nephrops norvegicus) under controlled laboratory conditions. They found that fibre egestion was size-dependent, with larger fibres retained for longer periods — 10 mm fibres requiring a minimum of 96 hours to egress — providing the first controlled data on MP fibre retention in this commercially important crustacean.
Capture, ingestion, and egestion of microplastics by suspension-feeding bivalves: a 40-year history
This review examines 40 years of research on how suspension-feeding bivalves capture, ingest, and egest microplastic particles. Researchers highlight that bivalves can actively select among particles based on size, shape, and surface properties both before and after ingestion, a capability often overlooked in recent microplastic studies. The paper argues that understanding these particle-sorting mechanisms is essential for accurately assessing microplastic exposure levels, toxic effects, and the potential for trophic transfer to humans who consume shellfish.
Impacts of size-fractionation on toxicity of marine microplastics: Enhanced integrated biomarker assessment in the tropical mussels, Perna viridis
Researchers studied how different sizes of polystyrene microplastics (0.5, 5, and 50 micrometers) affect toxicity in tropical green mussels. The study found that smaller microplastics caused greater bioaccumulation and more severe toxic effects, including oxidative stress and tissue damage, indicating that size is a critical factor in determining microplastic toxicity in marine organisms.