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20 resultsShowing papers similar to Polyethylene Microplastics Affected Survival Rate, Food Intake and Altered Oxidative Stress Parameters in Freshwater Snail Indoplanorbis exustus
ClearDietary consumption of polypropylene microplastics alter the biochemical parameters and histological response in freshwater benthic mollusc Pomacea paludosa
Researchers exposed freshwater snails (Pomacea paludosa) to polypropylene microplastics through their diet at three concentrations over 28 days and measured biochemical and tissue-level responses. They found significant changes in antioxidant enzyme activity and histological damage in the digestive gland, with effects worsening at higher concentrations. The study suggests that dietary microplastic exposure can cause oxidative stress and organ damage in freshwater benthic organisms.
Assessment of oxidative stress, neurotoxicity, genotoxicity and prey-predator interactions in freshwater snails exposed to microplastics
This conference abstract investigates oxidative stress, nerve damage, DNA damage, and changes in predator-prey behavior in freshwater snails exposed to microplastics, pointing to a broad range of harmful biological effects. Understanding these impacts in aquatic invertebrates matters because they occupy important ecological roles and their exposure to microplastics can have cascading effects through food webs.
Impacts of PVC microplastic ingestion on Biomphalaria alexandrina: behavioral, physiological, and histological responses
Researchers exposed the freshwater snail Biomphalaria alexandrina to PVC microplastics and measured behavioral, physiological, and histological outcomes. They found concentration-dependent harm including reduced feeding and survival, oxidative stress, and damage to digestive glands.
Do microplastics induce oxidative stress in marine invertebrates?
This review examined whether marine invertebrates exposed to microplastics show evidence of oxidative stress — a common cellular response to toxic injury — finding support for this effect across multiple species and polymer types. Oxidative stress is a key mechanism by which microplastics may harm marine organisms.
Unveiling the effects of polyethylene microplastic on the physiological responses across different size classes of Telescopium telescopium
Researchers exposed mangrove horn snails of two different size classes to environmentally relevant concentrations of polyethylene microplastics for 21 days and measured their energy balance and stress responses. They found that both small and large snails experienced negative energy balance and increased oxidative stress at medium and high microplastic concentrations. The study suggests that microplastic pollution in estuarine environments may threaten the survival of organisms across different life stages.
Is microplastic an oxidative stressor? Evidence from a meta-analysis on bivalves
Microplastics induce time-dependent oxidative stress in bivalves, with antioxidant enzymes (GPx, GST, SOD) increasing during short-term exposure but declining after long-term exposure, while glutathione levels and catalase activity remained elevated throughout and may serve as reliable biomarkers of sublethal microplastic effects.
Effects of environmentally relevant levels of polyethylene microplastic on Mytilus galloprovincialis (Mollusca: Bivalvia): filtration rate and oxidative stress
Researchers exposed Mediterranean mussels to polyethylene microplastics at environmentally relevant concentrations and found significant reductions in filtration rate and signs of oxidative damage in the digestive gland. The study suggests that microplastics as small as 40-48 micrometers can disrupt antioxidant defenses in bivalves even at low concentrations, raising concerns about their impact on marine filter-feeders.
Metabolic equilibrium and reproductive resilience: Freshwater gastropods under nanoplastics exposure
Researchers exposed freshwater snails to nanoplastics of two different sizes and found concentration-dependent effects on body condition and bioaccumulation, with larger particles accumulating more in tissues. While carbohydrate and protein reserves remained largely stable, lipid metabolism and mitochondrial function were affected at certain exposures. Despite these metabolic shifts, the snails maintained overall energy balance, suggesting some resilience to nanoplastic stress over the 21-day study period.
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.
Using marine mussels to assess the potential ecotoxicological effects of two different commercial microplastics
Researchers exposed marine mussels to polypropylene and polyethylene terephthalate microplastics for up to 28 days to evaluate ecotoxicological effects. They measured feeding rates, condition index, and various biochemical markers related to metabolism and oxidative stress. The study found measurable changes in the mussels' biological responses, suggesting that these common types of microplastics can affect the health of filter-feeding organisms in marine environments.
Effects of environmentally relevant concentrations of microplastics on amphipods
Researchers exposed two amphipod species to environmentally relevant polyethylene microplastic concentrations and found increased mortality and oxidative stress, with species-specific sensitivity suggesting ecological impacts even at low exposure levels.
Ingestion and impacts of water-borne polypropylene microplastics on Daphnia similis
Researchers found that acute exposure to polypropylene microplastics caused immobility in Daphnia similis, increased reactive oxygen species production, elevated antioxidant enzyme activity, and decreased neurotransmitter function.
Assessment of the Effects of Environmental Concentrations of Microplastics on the Aquatic Snail Potamopyrgus antipodarum
Researchers examined the effects of environmentally relevant microplastic concentrations on the freshwater snail Potamopyrgus antipodarum, assessing impacts on this benthic invertebrate in an understudied freshwater ecosystem context.
Oxidative stress, energy metabolism and molecular responses of earthworms (Eisenia fetida) exposed to low-density polyethylene microplastics
Researchers exposed earthworms to various concentrations of low-density polyethylene microplastics for 28 days and measured oxidative stress, energy metabolism, and molecular responses. The study found dose-dependent increases in oxidative damage markers and alterations in energy reserves, suggesting that microplastic contamination in soils can trigger measurable physiological stress in soil invertebrates.
Microplastics Exposure Causes Negligible Effects on the Oxidative Response Enzymes Glutathione Reductase and Peroxidase in the Oligochaete Tubifex tubifex
Researchers exposed the freshwater oligochaete Tubifex tubifex to polyethylene microplastics at environmentally relevant concentrations, finding negligible effects on oxidative stress markers after the exposure period. The results suggest this bioindicator species may have some tolerance to microplastic exposure at tested concentrations.
Uptake and adverse effects of polyethylene terephthalate microplastics fibers on terrestrial snails (Achatina fulica) after soil exposure
Researchers exposed terrestrial snails to polyethylene terephthalate microplastic fibers in soil and found that the snails ingested and excreted the fibers, but exposure caused visible damage to the particles and oxidative stress in the animals. Higher concentrations led to measurable changes in growth and feeding behavior. The study provides evidence that microplastic fibers in soil can harm land-dwelling organisms that play important roles in soil ecosystems.
Adaptive gut microbiota dysbiosis coupled with altered fatty acid metabolism in apple snails (Pomacea canaliculata): A potential strategy against polystyrene microplastic stress
Researchers exposed apple snails to polystyrene microplastics for 21 days and found that higher concentrations reduced food intake and weight gain while causing oxidative stress in intestinal tissues. The microplastics also significantly altered the snails' gut microbiome composition and disrupted fatty acid metabolism. The study suggests that freshwater snails may adapt to microplastic stress through changes in their gut bacteria and metabolic pathways, though at a cost to their overall health.
Oxidative stress dynamics in Hyalella azteca under sub-chronic exposure to naturally aged polypropylene microplastics
Researchers exposed the freshwater amphipod Hyalella azteca to naturally aged polypropylene microplastics for up to 14 days followed by a 7-day recovery period. They found that the highest concentration caused significant mortality, while lower concentrations induced oxidative stress markers after 14 days of exposure. After the depuration period, biochemical damage levels were reduced, demonstrating that the organisms can partially recover once removed from the contaminated environment.
Does microplastic induce oxidative stress in marine invertebrates
This review examined whether microplastic ingestion induces oxidative stress in marine invertebrates, finding evidence that microplastics can elevate reactive oxygen species and disrupt antioxidant defenses in species including mussels, sea urchins, and copepods. Oxidative stress is a key mechanism through which microplastics may cause cellular damage in marine animals.
Chemical pollution and ecotoxicological effects of high-density polyethylene microplastics in Mytilus galloprovincialis from two Italian lagoon ecosystems
Researchers assessed microplastic contamination and chemical pollution in mussels from two Italian lagoon ecosystems and tested the effects of high-density polyethylene microplastic exposure. The study found microplastics present in mussels from one lagoon, and laboratory exposure to HDPE microplastics induced significant oxidative stress responses, suggesting these particles can cause ecotoxicological harm in transitional water ecosystems.