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61,005 resultsShowing papers similar to Role of benzophenone-3 additive in the effect of polyethylene microplastics on Daphnia magna population dynamics
ClearDistinct Effect of Benzophenone-3 Additive Leaching from Polyethylene Microplastics on Daphnia magna Population Dynamics
This study found that chemical additives leaching from polyethylene microplastics — specifically the UV stabilizer benzophenone-3 — caused significantly more harm to water flea (Daphnia magna) populations than the microplastic particles themselves. Leachate from the plastic delayed development and stunted growth, resulting in a population nearly 15 times smaller after 18 days compared to controls. The plastic particles alone did not cause significant population decline. This highlights that the hidden chemicals inside plastics may pose a greater ecological risk than the physical particles, a concern for aquatic food webs that ultimately link to human seafood consumption.
Role of benzophenone-3 additive in chronic toxicity of polyethylene microplastic fragments to Daphnia magna
Researchers studied how the UV-filter additive benzophenone-3 in polyethylene microplastics affects chronic toxicity in the water flea Daphnia magna. Surprisingly, daphnids exposed to microplastics containing BP-3 had higher survival rates than those exposed to plain microplastics, likely because BP-3 leachate altered the organisms' light-seeking behavior, reducing their microplastic intake. However, both BP-3-containing microplastics and BP-3 alone negatively affected reproduction, suggesting the additive introduces distinct toxicity concerns.
Synergistic effect of microplastic fragments and benzophenone‐3 additives on lethal and sublethal Daphnia magna toxicity
Researchers assessed the combined effects of polyethylene microplastic fragments and the UV-filter additive benzophenone-3 on the water flea Daphnia magna. They found that microplastic fragments were significantly more acutely toxic than the dissolved additive alone, and the combination produced synergistic lethal and sublethal effects. The study highlights that microplastic particles carrying chemical additives may pose greater risks to aquatic invertebrates than either stressor in isolation.
Transgenerational effects of polyethylene microplastic fragments containing benzophenone-3 additive in Daphnia magna
Researchers investigated the transgenerational effects of polyethylene microplastic fragments containing the UV filter benzophenone-3 on water fleas (Daphnia magna) across four generations. They found that while mortality effects recovered by the third unexposed generation, reproductive impairments persisted, with the additive BP-3 contributing more to long-term toxicity than the plastic particles alone. The study suggests that chemical additives in microplastics may pose lasting risks to aquatic organisms even across generations that were never directly exposed.
Different effects of polyethylene microplastic and benzophenone-3 additive on interspecific competition of Daphnia magna and Daphnia pulex
Researchers studied interspecific competition between two Daphnia species under polyethylene microplastic and benzophenone-3 (a UV filter additive) exposure, finding that smaller D. pulex had a competitive advantage under microplastic alone due to lower uptake, while larger D. magna became dominant when the additive was present due to its greater tolerance.
Additives and biofilm formation on microplastics : insights from benzophenone-3 in polyethylene
Researchers investigated how the UV-filter additive benzophenone-3 (BP-3) embedded in polyethylene microplastics affects biofilm formation and environmental aging in freshwater. BP-3-containing MPs developed different biofilm communities and aged differently compared to pristine MPs, demonstrating that additives significantly shape the environmental behavior of microplastics.
The contribution of additives to microplastic aquatic toxicity – A testing approach with model additives on selected aquatic organisms
Researchers developed a systematic testing approach to distinguish between the physical effects of microplastic particles and the chemical effects of their additives on aquatic organisms. The study found that polyethylene microplastics alone showed no significant toxicity to water fleas or protozoa, but the inorganic additive zinc oxide was toxic on its own. The findings suggest that the additives embedded in plastics, rather than the plastic particles themselves, may be the primary drivers of toxicity in some cases.
The contribution of additives to microplastic aquatic toxicity - A testing approach with model additives on selected aquatic organisms
Researchers developed a systematic methodology to separate the physical effects of microplastic particles from the chemical effects of their embedded additives on aquatic organisms. The study found that polyethylene microplastics alone showed no significant toxicity to water fleas or protozoa, while the additive zinc oxide was toxic independently. Artificial aging changed how much additive was released from the plastics but did not change the overall toxicity to the tested organisms.
Effects of microplastic particles and leaching additive on the life history and morphology of Daphnia magna
Researchers compared the chronic effects of flexible PVC microplastics containing the plasticizer DiNP versus rigid PVC without plasticizer on the freshwater crustacean Daphnia magna. They found that flexible PVC increased body length and reduced offspring production, while rigid PVC and glass bead controls had no effect. The study demonstrates that the plasticizer additive leaching from microplastics, rather than the plastic particle itself, can be the primary driver of biological harm.
Combined toxic effects of polystyrene microplastic and benzophenone-4 on the bioaccumulation, feeding, growth, and reproduction of Daphnia magna
Researchers examined the combined toxic effects of polystyrene microplastics and the UV filter chemical benzophenone-4 on water fleas over 21 days. They found that exposure to both contaminants together caused greater harm to feeding, growth, and reproduction than either pollutant alone. The study demonstrates that microplastics and personal care product chemicals can interact to amplify their negative effects on freshwater organisms.
Role of extracellular polymeric substances in leaching and bioconcentration of benzophenone-3 from microplastic fragments
Researchers found that extracellular polymeric substances (EPS) produced by the alga Chlorella vulgaris reduced leaching of the UV filter benzophenone-3 (BP-3) from polyethylene microplastics under most conditions, but that Daphnia magna still bioconcentrated the chemical, demonstrating complex interactions between microplastics, biopolymers, and additive toxicity.
Shape, size, and polymer dependent effects of microplastics on Daphnia magna
Researchers systematically tested how the shape, size, and material of microplastic particles affect the water flea Daphnia magna by comparing polystyrene particles to non-plastic control particles with similar properties. They found that small polystyrene beads and fragments caused harmful effects on reproduction and body shape, while none of the non-plastic control particles caused any damage. The study suggests that the toxic effects are specific to the plastic polymer itself, not simply a result of ingesting small particles.
Do microplastic particles affect Daphnia magna at the morphological, life history and molecular level?
Researchers examined the effects of two polymer mixtures on the water flea Daphnia magna at morphological, life history, and molecular levels. At low but environmentally realistic microplastic concentrations, they found no significant changes in mortality, body size, or reproduction in adult organisms. However, differential gene expression analysis revealed molecular-level responses, suggesting that even when visible effects are absent, microplastics may trigger subtle biological changes.
Short-term and long-term effects of microplastics and organic UV-filters on the invertebrate model species Daphnia magna
Researchers exposed water fleas to polystyrene microplastics, a mixture of UV-filter chemicals found in sunscreens, or both over 21 days. The microplastics alone reduced body size and reproduction, while combined exposure with UV-filters further impaired swimming behavior and offspring production. The study highlights that microplastics and common personal care product chemicals can interact to create compounding negative effects on freshwater organisms.
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.
The Effects of Natural and Anthropogenic Microparticles on Individual Fitness in Daphnia magna
Researchers compared the effects of natural and anthropogenic microparticles on the fitness of the water flea Daphnia magna. The study found that both primary microplastics from cosmetic products and secondary microplastics from degraded plastic waste can have detrimental effects on zooplankton feeding and fitness, with particle shape and weathering influencing toxicity.
Contribution of additive-related effects to microplastics toxicity for aquatic organisms: a case study with model metal (ZnO) and organic additives (Lubio) and LDPE
Researchers produced well-defined LDPE microplastic particles loaded with model additives (ZnO nanoparticles and a commercial Lubio antiaging system) to isolate and quantify additive-related contributions to microplastic toxicity in Daphnia magna and Tetrahymena thermophila. Results showed ZnO nanoparticles were acutely toxic while additive-free and Lubio-loaded particles demonstrated differing toxicity profiles, providing a framework for disentangling polymer versus additive effects in ecotoxicity studies.
Aquatic toxicity of UV-irradiated commercial polypropylene plastic particles and associated chemicals
Researchers tested the aquatic toxicity of UV-degraded polypropylene plastic particles on water fleas and algae. They found that smaller nanoplastic particles were significantly more toxic than larger microplastics, and the presence of a common plastic additive (the antioxidant Irgafos 168) made the particles even more harmful. The study suggests that as plastics break down in the environment and release their chemical additives, they may become increasingly dangerous to aquatic life.
Short-term exposure with high concentrations of pristine microplastic particles leads to immobilisation of Daphnia magna
Researchers tested the effects of high concentrations of pristine microplastic particles on the water flea Daphnia magna. The study found that short-term exposure to high microplastic concentrations led to immobilisation, and that different polymer types, sizes, and shapes produced varying levels of toxicity, highlighting the importance of particle characteristics in microplastic risk assessment.
Maternal Effect of Polyethylene Microplastic Fragments Containing Benzophenone-3 in Different Ages and Broods of Daphnia Magna
This study investigated how maternal age and brood number affect the toxicity of polyethylene microplastic fragments containing the UV filter benzophenone-3 to Daphnia magna over two generations, finding that maternal effects on offspring toxicity varied significantly with age and brood.
Toxicological effects of microplastics and heavy metals on the Daphnia magna
Researchers studied how polystyrene microplastics of two sizes adsorb heavy metals and how their combined presence affects the water flea Daphnia magna. They found that smaller microplastics had higher adsorption capacity for metals, and the combined toxicity shifted from antagonistic to additive effects as microplastic concentrations increased. The study reveals that smaller microplastics pose a greater toxicological risk when combined with heavy metals in aquatic environments.
Sublethal effects of bio-plastic microparticles and their components on the behaviour of Daphnia magna.
This study compared the toxicity of bioplastic microparticles made from PLA and PHB to traditional fossil-based plastics on water fleas, a common test organism. Surprisingly, the bioplastic particles were about five times more toxic than their chemical additives alone, and commercial bioplastic products were more harmful than standard laboratory-grade materials. This challenges the assumption that biodegradable plastics are automatically safer for the environment and raises questions about what happens when bioplastics break down into microparticles.
Sublethal impacts of fragmented polyethylene nanoplastics on Daphnia magna following chronic exposure
Researchers exposed Daphnia magna (water fleas) to fragmented polyethylene nanoplastics over a chronic period and observed adverse sublethal effects. The study suggests that even at concentrations that do not cause outright mortality, fragmented nanoplastics from real-world polyethylene degradation can impair the health and function of these important freshwater organisms.
Adsorption of benzalkonium chlorides onto polyethylene microplastics: Mechanism and toxicity evaluation
Researchers investigated how polyethylene microplastics adsorb benzalkonium chloride disinfectants and the combined toxic effects on water fleas. The study found that microplastics had strong adsorption capacity for these disinfectants, and surprisingly, the presence of microplastics increased survival rates of Daphnia magna by acting as scavengers that reduced the bioavailability of the toxic chemicals in water.