Uptake Through Feeding and/or Culture Medium of 0.5% Dimethyl Sulfoxide (DMSO): Biological Response of Daphnia magna and Ceriodaphnia dubia in Ecotoxicity Tests
2025
Stefania Bigi | Karin Schlappa | Serena Anselmi | Francesca Provenza | Monia Renzi
Dimethyl sulfoxide (DMSO) is an aprotic solvent widely used in ecotoxicological assays, suitable for solubilizing a wide range of polar and non-polar substances. The aim of this study was to analyze the species-specific biological response of the model organisms Daphnia magna and Ceriodaphnia dubia to 0.5% DMSO, under feeding conditions. Both species were exposed in culture medium, with or without 0.5% DMSO, to the unicellular algae (Raphidocelis subcapitata, Tetradesmus obliquus), either individually or in combination: the algae were pretreated or not pretreated with 0.5% DMSO. The exposure was carried out in acute (24 h and 48 h) and chronic (72 h and 168 h) ecotoxicity tests. The experimental results suggest that a lower DMSO concentration limit (<:0.5%) would be appropriate for C. dubia due to its greater sensitivity to the solvent. Finally, considering the ingestion of DMSO-contaminated algae, it can be concluded that, under certain experimental conditions, the solvent ingested through the diet may significantly affect the mortality of both D. magna and C. dubia.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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