Toxic effects of single animal hormones and their mixtures on the growth of Chlorella vulgaris and Scenedesmus armatus

Chemosphere
Karolina CzarnyRenata Gadzała-Kopciuch

Abstract

In their environments, aquatic organisms are simultaneously exposed to mixtures of several endocrine disrupting compounds, including hormones. However, most of the toxicity studies so far focused on effects of single contaminants. The available information on the potential toxicity of combined hormones on microalgae is extremely limited. For these reasons the aim of this study was to evaluate the individual and mixture effect of estrone (E1), ß-estradiol (E2), estriol (E3), 17-α-ethinylestradiol (EE2), progesterone (PRO), 5-pregnen-3β-ol-20-one (PRE), levonorgestrel (LG) and testosterone (TST) on Chlorella vulgaris and Scenedesmus armatus. Green algae cells were exposed to different concentrations (0.1-100 mg L-1) of hormones for 14 days. Biomass in the form of dry weight and chlorophyll a was examined. The decreasing order of toxicity (based on EC50, 14d) to Chlorella vulgaris and Scenedesmus armatus was: EE2>PRO > E2>PRE > TST > E3>LG > E1 and EE2>PRO > TST > E2>PRE > LG > E1>E3, respectively. Chlorella vulgaris was more sensitive to the effects of hormones than Scenedesmus armatus. Although mixed hormones were more toxic to green algae than single hormones, in the ecosystem mixtures can pose higher ecological risk than singl...Continue Reading

Citations

Jun 28, 2019·Journal of Separation Science·Karolina CzarnyRenata Gadzała-Kopciuch
Dec 25, 2019·Environmental Science and Pollution Research International·Bruna Luiza ViegaElisângela Düsman
May 30, 2019·International Journal of Molecular Sciences·Krystian Miazek, Beata Brozek-Pluska
Dec 2, 2020·Ecotoxicology and Environmental Safety·Fuqiang ZhangYonghong Wu
Oct 1, 2021·The Science of the Total Environment·Yingxiao MaRuihua Dai

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