P17-05: Mixture toxicity of pharmaceuticals and microplastics toward Daphnia magna

Antibiotic and microplastic co-exposure: Effects on Daphnia magna and implications for ecological risk assessment

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This review pulls together existing research on how antibiotics and microplastics, both common pollutants in lakes and rivers, affect tiny water creatures called Daphnia, which are important indicators of freshwater ecosystem health. The key takeaway: when these two pollutants combine, they appear to cause more harm together than either does alone, suggesting our current safety assessments (which typically test pollutants one at a time) may be underestimating real-world risks. While this study focused on aquatic life rather than humans directly, it matters because these same waterways often feed into our drinking water and food supply, so better understanding combined pollutant effects could help protect

Toxicity Effects of Microplastics and Tire Particles on Daphnia magna

Microplastic Transformation and Toxicity Effects on Daphnia magna

Combined effect of polyethylene microplastics and Microcystis aeruginosa spent medium on Daphnia magna

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Researchers combined polyethylene microplastics with metabolites from the harmful cyanobacterium Microcystis aeruginosa in Daphnia magna exposures, finding that the combination increased microplastic ingestion sixfold and suppressed antioxidant responses, leading to higher mortality and lower reproduction during recovery compared to microplastic exposure alone.

On the Influence of Environmental Conditions on Microplastic Sorption Dynamics and Mechanisms of Pharmaceuticals in Aquatic Ecosystems

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This review examines how environmental conditions — including temperature, pH, salinity, and dissolved organic matter — influence the dynamics and mechanisms by which microplastics sorb pharmaceutical pollutants in aquatic ecosystems. Microplastics acting as carriers for pharmaceutical compounds create combined exposure risks for aquatic organisms and humans, as pharmaceuticals sorbed to microplastics can be ingested together and may have synergistic toxic effects.