Effects of mEthylparaben (cas 120-47-8), Ethylparaben (cas 120-47-8), and propylparaben on life parameters and sex ratio in the marine copepod Tigriopus japonicus
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Add time:09/02/2019 Source:sciencedirect.com
Parabens are used as a preservative substance in a wide range of man-made products causing deleterious effects on aquatic organisms and therefore, the concern of their effects to aquatic organisms has been increased. In this study, acute toxicity of methylparaben (MeP), ethylparaben (EtP), and propylparaben (PrP) was assessed in the marine copepod Tigriopus japonicus. The acute toxicity assessment resulted in the median lethal concentration (LC50) values of MeP, EtP, and PrP were 29,754, 11,659, and 113 μg/L, respectively, for male and 38,183, 15,371, and 357 μg/L, respectively, for female, indicating the strongest toxicity of PrP, compared to MeP and EtP and the higher sensitivity of males compared to females. Developmental retardation and reproduction rate were also measured under chronic exposure. Furthermore, significant alteration in sex ratio was shown in PrP-exposed group, indicating PrP would have feminization effect in T. japonicus. Here we report different toxicity of three types of parabens and also shows potential estrogenic effects of PrP in T. japonicus.
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