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61,005 resultsShowing papers similar to Incubation in Wastewater Reduces the Multigenerational Effects of Microplastics inDaphnia magna
ClearExposure medium and particle ageing moderate the toxicological effects of nanomaterials to Daphnia magna over multiple generations: a case for standard test review?
This study found that the toxicological effects of engineered nanomaterials on Daphnia magna varied depending on the exposure medium and whether particles had been environmentally aged, with aged particles behaving differently from pristine ones across multiple generations. The findings suggest that standard ecotoxicology test protocols designed for pristine particles may not accurately reflect real-world risks from weathered nanoplastics and nanomaterials.
Intergenerational and biological effects of roxithromycin and polystyrene microplastics to Daphnia magna
Researchers studied the intergenerational effects of the antibiotic roxithromycin combined with polystyrene microplastics on water fleas (Daphnia magna) across multiple generations. They found that UV-aged microplastics altered the carrier effects on the antibiotic compared to pristine particles, changing survival and reproductive outcomes. The study suggests that the aging and weathering state of microplastics in the environment influences how they interact with pharmaceutical pollutants and their combined toxicity.
Transgenerational effects and recovery of microplastics exposure in model populations of the freshwater cladoceran Daphnia magna Straus
Researchers tracked the effects of microplastic exposure across four generations of Daphnia magna and found that reproductive impairment and growth reductions persisted into offspring generations that were never directly exposed. The study suggests that microplastics can cause transgenerational effects in freshwater organisms, though partial recovery was observed when exposure ceased.
Difference in sensitivity of Daphnia magna to pristine and aged microplastic fibers
Researchers compared the sensitivity of Daphnia magna to pristine versus aged microplastic fibers, which make up a large proportion of environmental plastic pollution. Aged fibers showed different toxicity profiles than pristine fibers, highlighting the need to use environmentally weathered particles in ecotoxicology tests.
Accumulation, depuration, and potential effects of environmentally representative microplastics towards Daphnia magna
Researchers created environmentally realistic microplastics by grinding common consumer products and tested their effects on Daphnia magna, a small freshwater organism widely used in toxicity studies. The organisms accumulated the microplastics and showed some ability to clear them over time, but the realistic microplastics caused different effects than the pristine laboratory plastics typically used in research. This suggests that many existing studies may underestimate the true environmental risk of microplastics.
Multi-level approach to evaluate the toxicity of virgin and weathered microplastics made of polylactic acid (PLA) and polybutylene adipate terephthalate (PBAT) on Daphnia magna
This study evaluated the toxicity of virgin and weathered bioplastic microplastics made from PLA and PBAT on Daphnia magna using a multi-level approach examining survival, reproduction, and molecular endpoints. Weathered bioplastic particles showed altered toxicity compared to virgin materials, demonstrating that environmental aging changes the hazard profile of biodegradable plastics.
An exploratory ecotoxicity study of primary microplastics versus aged in natural waters and wastewaters
Polyethylene facial scrub microbeads were incubated for 3 weeks in spring water, river water, WWTP effluent, and landfill leachate, then tested for ecotoxicity on Daphnia, zebrafish embryos, and duckweed. While pristine microplastics showed no acute toxicity, beads incubated in high-organic-load wastewaters became significantly toxic, demonstrating that environmental weathering and chemical sorption transform microplastics into more hazardous particles.
Primary and Secondary Plastic Particles Exhibit Limited Acute Toxicity but Chronic Effects on Daphnia magna
Researchers investigated the chronic effects of both primary nanoplastics (polystyrene nanospheres) and secondary micro- and nanoplastics from weathered single-use plastics on Daphnia magna across multiple generations. The study found that nanoplastics accumulated in the intestine and brood chamber, transferred to offspring, and reduced reproduction and physiological function, with effects persisting across generations even after exposure ended.
Multi-level approach to evaluate the toxicity of virgin and weathered microplastics made of polylactic acid (PLA) and polybutylene adipate terephthalate (PBAT) on Daphnia magna
Researchers assessed the toxicity of both virgin and weathered bioplastic microplastics using a multi-level approach including biomarkers of oxidative stress and cellular damage. Weathered bioplastics showed altered toxicity compared to virgin material, demonstrating that environmental aging affects the hazard posed by biodegradable alternatives.
Aging process potentially aggravates microplastic toxicity in aquatic organisms: Evidence from a comprehensive synthesis
This meta-analysis found that environmental aging of microplastics significantly worsens their toxicity to aquatic organisms overall, particularly harming algae, zooplankton, and fish. However, the effect varied by organism type — aged microplastics were less toxic to aquatic plants. Aging methods, particle characteristics, and environmental conditions all modulated the severity of toxicity.
Microplastics but not natural particles induce multigenerational effects in Daphnia magna
Daphnia magna were exposed to irregular polyethylene microplastics across multiple generations and compared to naturally occurring mineral particles of similar size; microplastics caused multigenerational reductions in reproduction and body size while natural particles did not, demonstrating particle-type-specific chronic effects.
Difference in sensitivity of Daphnia magna to pristine and aged microplastic fibers
Researchers compared the acute and chronic toxicity of pristine versus UV-aged polyamide, polyacrylonitrile, and polyester microplastic fibers on the freshwater crustacean Daphnia magna, also testing natural wool and cellulose fibers as references. Aged plastic fibers showed different toxicity profiles than unaged fibers, with effects on survival, reproduction, growth, and oxygen consumption.
Long-term exposure to nanoplastics reduces life-time in Daphnia magna
Researchers conducted long-term exposure experiments to assess the effects of nanoplastics on the freshwater invertebrate Daphnia magna over its entire lifetime. The study found that chronic nanoplastic exposure significantly reduced the lifespan of these organisms, demonstrating that while short-term acute toxicity has been documented, the long-term consequences of nanoplastic pollution may be even more concerning for aquatic ecosystems.
Microplastics originated from Plasmix-based materials caused biochemical and behavioral adverse effects on Daphnia magna
Researchers assessed the toxicity of microplastics derived from Plasmix, a heterogeneous recycled plastic fraction, on the freshwater crustacean Daphnia magna over 21 days. They found that both naive and additivated Plasmix microplastics were ingested by the organisms, causing changes in oxidative status, antioxidant enzyme activity, and lipid peroxidation. The study highlights the importance of eco-safety evaluation before deploying new materials made from recycled plastic waste.
Assessing the ecological consequences of biodegradable plastics: Acute, chronic and multigenerational impacts of poly-3-hydroxybutyrate microplastics on freshwater invertebrate Daphnia magna
Researchers tested the effects of microplastics made from PHB, a biodegradable plastic, on the freshwater organism Daphnia magna across multiple generations. Even biodegradable microplastics impaired reproduction, growth, and survival, with effects worsening over successive generations. This study shows that replacing conventional plastics with biodegradable alternatives does not eliminate the microplastic problem, since biodegradable plastics can still produce harmful micro-sized particles.
Effects of nanoplastics at predicted environmental concentration on Daphnia pulex after exposure through multiple generations
Researchers exposed water fleas (Daphnia pulex) to environmentally realistic nanoplastic concentrations across three generations over 63 days. They found that while the first two generations showed mainly molecular-level stress responses, the third generation experienced reduced growth and reproduction along with suppressed antioxidant defenses. The study suggests that even very low nanoplastic concentrations can have significant long-term toxic effects that worsen across generations and may take multiple generations to recover from.
A fit-for-purpose categorization scheme for microplastic morphologies
Researchers studied the long-term effects of polypropylene microplastic exposure on the life history traits of the water flea Daphnia magna across three generations, finding progressively increasing reproductive impairment and reduced survival in successive generations. The multigenerational impacts exceeded those observed in single-generation tests.
Evaluating sublethal effects of long-term exposure of Daphnia magna to nanoplastics at a low concentration
Lab experiments exposed Daphnia magna — a water flea that links primary producers to larger predators — to nanoplastics at low concentrations over multiple generations. The nanoplastics caused sublethal reproductive effects that became more pronounced over successive generations, suggesting that long-term, low-level nanoplastic exposure in the environment could gradually impair aquatic invertebrate population health.
Microplastic fiber-induced transgenerational epigenetic disruption impairs fitness in Daphnia magna
Researchers investigated the multi-generational effects of microplastic fiber exposure on the water flea Daphnia magna across three generations. They found that microplastic fibers negatively affected reproduction and survival, and these effects persisted into unexposed generations through epigenetic changes. The study reveals that microplastic pollution may cause lasting harm to aquatic populations through inherited biological alterations, not just direct exposure.
Effects of microplastics and natural particles on the aquatic invertebrate Daphnia magna under different dietary quality scenarios
Researchers exposed Daphnia magna to both natural particles—including sediment, algae, and biofilm—and polystyrene microplastics to compare their effects, finding that natural particles caused similar or greater harm than microplastics at equivalent concentrations, highlighting the need for environmental context in MP toxicity studies.
Ecotoxicology of Polystyrene Microplastic Fragments: Oxidative Stress Effects in Neonate Versus Adult Daphnia magna
Researchers exposed neonate and adult Daphnia magna, a key freshwater organism, to polystyrene microplastic fragments to assess oxidative stress effects. They found that younger organisms were significantly more sensitive to microplastic exposure, showing greater oxidative stress and reduced antioxidant responses compared to adults. The study highlights that life stage is an important factor when evaluating the ecological risks of microplastic pollution in aquatic environments.
Tissue translocation, multigenerational and population effects of microplastics in Daphnia magna
This study examined how microplastics are taken up by the water flea Daphnia magna and whether exposure causes multigenerational effects, finding that microplastics can accumulate in body tissues and pass to offspring. The results suggest microplastic pollution poses risks not just to exposed individuals but can affect population health across generations.
Effects of microplastics mixed with natural particles on Daphnia magna populations
Researchers exposed populations of the freshwater organism Daphnia magna to polystyrene microplastics mixed with natural particles over 50 days and found significant population-level declines. Population sizes dropped by 28 to 42 percent compared to controls, with changes in population structure and stress-induced resting egg production. The study demonstrates that microplastics cause harmful effects at the population level, not just in individual organisms.
First insight of the intergenerational effects of tri-n-butyl phosphate and polystyrene microplastics to Daphnia magna
Researchers studied the combined effects of polystyrene microplastics and the flame retardant tributyl phosphate on water fleas across multiple generations. They found that co-exposure caused more severe impacts on survival, growth, and reproduction than either contaminant alone, with effects persisting into subsequent generations. The study suggests that microplastics carrying adsorbed chemicals may pose compounding risks to aquatic organisms over time.