文献类型： 外文期刊

第一作者： Sui Yamning

作者： Sui Yamning;Wang Senyang;Zhang Longsheng;Shen Mengyan;Li Kaixing;Linlan, L., V;Dong Xuexing;Mohsen Mohamed;Mohsen Mohamed;Liu Zhiquan;Nguyen Haidang;Zhang Shengmao

作者机构：

关键词： microplastic; zooplankton; environmental stress; life-history parameters

期刊名称：JOURNAL OF OCEAN UNIVERSITY OF CHINA （ 影响因子：1.179； 五年影响因子：1.225 ）

ISSN： 1672-5182

年卷期： 2022 年 21 卷 2 期

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收录情况： SCI

摘要： The presence of microplastics in aquatic ecosystems is of increasing global concern. Nano-sized plastics, in particular, can penetrate the cell membrane and cause biological death. Our study evaluated the combined impacts of several polystyrene microspheres' sizes and nominal concentrations on the overall performance changes of Brachionus plicatilis. Experimental animals were exposed to three microplastic sizes (0.08, 0.5 and 6 mu m) and five nominal concentrations (0, 0.5, 2, 8, 32 mu g mL(-1)) for 20 d. Our results showed that the toxicological effect of particle size on rotifers did not significantly depend on the nominal concentration. The interaction between the nominal concentration and size occurred only for body length and lorica width. Specifically, high nominal concentrations of microplastics that were close to nanometer size significantly impaired the overall vitality of rotifers, embodied in shortage of body type, delay in the arrival of maturity, reduction in the cumulative number of neonates, and the advance of the death process. In comparison, fair-sized size (0.5 and 6 mu m) displayed non-significant damage except for individual groups. Most notably, the net reproductive yield was only a third of what it was in the original environment, implying that there was not much fertility left. Besides, with the development of rotifers, the adverse effects of polystyrene microsphere drive had become more and more serious.

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