Variations in the Life-Cycle Parameters and Population Growth of Rotifer Brachionus Plicatilis Under the Stress of Microplastics and 17β-Estradiol

The Combined Effect of Plastic Particles Size and Concentration on Rotifers’ (Brachionus plicatilis) Performance

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Researchers exposed the marine rotifer Brachionus plicatilis to polystyrene microspheres across multiple sizes and concentrations for 20 days, finding that near-nanometer particles at high concentrations severely impaired body size, maturity timing, reproduction, and survival, reducing net reproductive yield to one-third of controls.

Influence of polystyrene microplastics on rotifer (Brachionus calyciflorus) growth, reproduction, and antioxidant responses

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Polystyrene microplastics trigger oxidative stress in the freshwater rotifer Brachionus calyciflorus, increasing reactive oxygen species while impairing growth, reproduction, and the antioxidant enzyme PHGPx in a concentration-dependent manner. These findings demonstrate that microplastics can disrupt the antioxidant defense systems of small aquatic invertebrates, with implications for food web stability in contaminated freshwater ecosystems.

Variations in the life-cycle parameters and population growth of rotifer Brachionus plicatilis under the stress of microplastics and 17β-estradiol

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Researchers studied how polystyrene microplastics of different sizes (50, 100, and 500 nm) and 17-beta-estradiol affect the life history and population growth of the rotifer Brachionus plicatilis, finding that only the smallest 50 nm particles caused dose-dependent reductions in lifespan, fecundity, and population growth rate. Combined exposure to microplastics and estradiol significantly impaired multiple reproductive parameters even when neither compound alone caused significant effects.

Toxic Effects of Fragmented Polyethylene Terephthalate Particles on the Marine Rotifer Brachionus Koreanus: Based on Ingestion and Egestion Assay, in Vivo Toxicity Test, and Multi-Omics Analysis

Metabolism deficiency and oxidative stress induced by plastic particles in the rotifer Brachionus plicatilis: Common and distinct phenotypic and transcriptomic responses to nano- and microplastics

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Researchers found that nanoplastics caused stronger reproductive and population growth inhibition in the marine rotifer Brachionus plicatilis than microplastics, with transcriptomic analysis revealing distinct size-dependent toxicity pathways involving metabolism deficiency and oxidative stress.