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61,005 resultsShowing papers similar to Microplastics: toxicity and Bioacumulation at the first trophic levels of the food chain
ClearEcotoxicology of microplastics in Daphnia: A review focusing on microplastic properties and multiscale attributes of Daphnia
This review synthesizes research on how microplastics affect Daphnia, a key organism in aquatic food webs, across individual, population, and community levels. Researchers found that the toxicity of microplastics to Daphnia depends heavily on the physical and chemical properties of the particles, and that combined exposure with other pollutants can produce more severe effects. The study highlights Daphnia as an important indicator species for understanding how microplastic pollution cascades through aquatic ecosystems.
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.
Effects of Microplastics on Aquatic Animals: A Case Study on Daphnia
Researchers exposed Daphnia water fleas to ten types of virgin plastic materials (HDPE, LDPE, PA, PVC, PP, PS, TPU, etc.) and measured survival, reproduction, and behavioral endpoints, finding that PVC and certain engineering plastics caused the greatest acute toxicity while softer polyolefins had lower effects.
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.
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.
Effects of microplastics on key reproductive and biochemical endpoints of the freshwater microcrustacean Daphnia magna
Researchers studied how microplastics affect reproduction and biochemistry in the freshwater water flea Daphnia magna, a widely used indicator species. They found that microplastic exposure led to changes in reproductive output and altered key biochemical markers in these small crustaceans. The study suggests that even tiny plastic particles can disrupt important biological functions in freshwater organisms that form the base of aquatic food webs.
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.
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.
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.
Toxicological Effect of Polyethylene Microsphere on Brachionus Plicatilis and Daphnia Magna
This study examined the toxicity of polyethylene microspheres on two aquatic organisms — a marine rotifer and a freshwater crustacean — finding dose-dependent reductions in survival and reproduction. The results confirm that microplastic particles at environmentally relevant concentrations can harm the base of aquatic food chains.
Screening study of four environmentally relevant microplastic pollutants: Uptake and effects on Daphnia magna and Artemia franciscana
Researchers exposed Daphnia water fleas and brine shrimp to four real-world microplastic types from consumer products, finding that smaller particles were ingested more readily by daphnids, that gut accumulation depended on particle size, and that while no acute lethality occurred, brine shrimp growth was impaired.
Consumption and Impacts of Water-Borne Polypropylene Microplastics on Daphnia Similis
This study exposed water fleas (Daphnia similis) to polypropylene microplastics and found that the particles accumulated in their digestive tracts and disrupted biochemical processes. Polypropylene is one of the most common plastics in consumer packaging, making it a major contributor to microplastic pollution in aquatic environments. Daphnia are a key link in aquatic food chains, so their disruption could affect fish and other wildlife that consume them.
Multi-level toxicity assessment of polylactic acid (PLA) microplastics on the cladoceran Daphnia magna
Researchers tested the toxicity of microplastics made from polylactic acid (PLA), a common bioplastic marketed as an eco-friendly alternative, on water fleas over 21 days. The PLA microplastics caused oxidative stress, depleted energy reserves, and reduced reproduction, though effects were generally milder than those reported for conventional plastics. This study challenges the assumption that bioplastics are harmless once they break down in the environment.
The complexity of micro- and nanoplastic research in the genus Daphnia – A systematic review of study variability and a meta-analysis of immobilization rates
This meta-analysis examines how micro- and nanoplastics affect Daphnia, a tiny water creature widely used to test the toxicity of pollutants. The research found that plastics can harm Daphnia survival and reproduction, which matters because these organisms are at the base of freshwater food chains that ultimately connect to human water and food sources.
Effects of Microplastics on Reproduction and Growth of Freshwater Live Feeds Daphnia magna
Researchers found that microplastic exposure negatively affected reproduction and juvenile growth in Daphnia magna, a key freshwater zooplankton species, with effects worsening at higher concentrations and posing risks for aquatic food chains.
Ecotoxicological Effects of Polyvinyl Chloride (PVC) Microplastics on the Growth, Reproduction and Survival of Daphnia magna
Researchers exposed Daphnia magna to polyvinyl chloride microplastics at different concentrations, alone and combined with two algal food sources, and measured growth, reproduction, and survival. PVC microplastics reduced fecundity and survival in a dose-dependent manner, with food source type modulating the severity of toxicity effects.
Toxic Effects of Ester Based Polymers on Daphnia Magna: a Laboratory Microcosm Study
Researchers assessed the acute and chronic toxicity of polycarbonate, PET, and polybutylene terephthalate microplastics on Daphnia magna, finding EC50 values of 2.6, 4.7, and greater than 100 mg/L respectively at 72 hours, with physiological effects observed even at low immobilization rates. The study demonstrates that ester-based polymer microplastics differ substantially in their toxicity to freshwater zooplankton.
Is the development of Daphnia magna neonates affected by short-term exposure to polyethylene microplastics?
Daphnia magna neonates ingested polyethylene microplastics within the first 24 hours of exposure but showed no significant effects on mobility or molting, though food availability was a more powerful driver of development than microplastic concentration. The study highlights the importance of accounting for feeding regime when interpreting microplastic toxicity tests.
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.
The ecotoxicological effects of microplastics on aquatic food web, from primary producer to human: A review
This review traces the ecotoxicological effects of microplastics through the aquatic food web, from algae and zooplankton up through fish and ultimately to human consumers. Researchers found evidence that microplastics cause harm at every trophic level, including reduced growth, reproductive impairment, and inflammatory responses. The study highlights that microplastics can transfer up the food chain, raising concerns about cumulative exposure in seafood-consuming populations.
Significant decline of Daphnia magna population biomass due to microplastic exposure
Stable Daphnia magna populations were exposed to primary microplastics (1–5 μm) at concentrations ranging from 10⁴ to 10⁷ particles/mL for three weeks, resulting in a significant decline in population biomass at higher concentrations. The study demonstrates that population-level endpoints reveal microplastic effects that are missed by single-organism toxicity tests, highlighting the need for realistic long-term exposure experiments.
Ingestion of micro- and nanoplastics in Daphnia magna – Quantification of body burdens and assessment of feeding rates and reproduction
Researchers used a quantitative approach to measure how the water flea Daphnia magna ingests and excretes micro- and nanoplastic particles of different sizes. They found that larger 2-micrometer particles were ingested in greater mass than 100-nanometer particles, and that complete excretion did not occur within 24 hours. Chronic exposure reduced feeding rates and reproduction, suggesting that ongoing microplastic exposure could have meaningful ecological consequences for these important freshwater organisms.
Uptake and effects of microplastic textile fibers on freshwater crustacean Daphnia magna
Researchers exposed the freshwater crustacean Daphnia magna to ground PET textile microfibers for 48 hours and found that fiber ingestion increased mortality in food-deprived organisms and that daphnids could not recover after transfer to clean water, providing the first evidence of PET textile microfiber bioavailability and toxicity in a standard ecotoxicology model.
Review on the ecotoxicological impacts of plastic pollution on the freshwater invertebrate Daphnia
This review examines the ecotoxicological impacts of plastic pollution on the freshwater invertebrate Daphnia, a widely used model organism. Researchers highlight that microplastics affect Daphnia reproduction, growth, and survival, and that chemicals leaching from plastics may contribute additional toxic effects that transfer through food webs.