溴酸盐对淡水轮虫秀丽隐杆线虫生殖的慢性影响。
Chronic Effects of Bromate on Sexual Reproduction of Freshwater Rotifer Brachionus calyciflorus.
机构信息
College of Civil Engineering and Architecture, Anhui Polytechnic University, Wuhu, 241000, Anhui, China.
Center of Cooperative Innovation for Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-founded by Anhui Province and Ministry of Education, Wuhu, 241000, China.
出版信息
Bull Environ Contam Toxicol. 2021 Feb;106(2):270-277. doi: 10.1007/s00128-021-03103-z. Epub 2021 Jan 20.
The effects of potassium bromate (KBrO), sodium bromate (NaBrO), and potassium bromide (KBr) on the sexual reproduction of the rotifer Brachionus calyciflorus were studied by 2-d population growth, 4-d sexual reproduction, and 7-d resting egg production tests. The results showed that low concentrations of bromate promote 2-d and 4-d rotifer population growth, while high concentrations limit it. Bromate stress significantly affected parameters of rotifer sexual reproduction, including the ratio of mictic to amictic females, the mictic rate of rotifers, and the fertilization rate of mictic females. KBrO at 0.001, 0.01, 1, and 10 mg/L, NaBrO at 1 and 10 mg/L, and KBr at 100 and 200 mg/L significantly increased resting egg production, while KBrO at 100 and 200 mg/L, and NaBrO at 200 mg/L significantly decreased it. Resting egg production appears to provide a sensitive endpoint in evaluating the effect of bromate on rotifer sexual reproduction.
研究了溴酸钾（KBrO）、溴酸钠（NaBrO）和溴化钾（KBr）对轮虫褶皱臂尾轮虫有性繁殖的影响。采用 2 天种群增长、4 天有性繁殖和 7 天休眠卵生产试验进行研究。结果表明，低浓度的溴酸盐促进 2 天和 4 天轮虫种群增长，而高浓度则限制其增长。溴酸盐胁迫显著影响轮虫有性繁殖的参数，包括产雌孤雌生殖比、轮虫产雌孤雌生殖率和产雌孤雌生殖体的受精率。0.001、0.01、1 和 10mg/L 的 KBrO、1 和 10mg/L 的 NaBrO 以及 100 和 200mg/L 的 KBr 显著增加休眠卵的产生，而 100 和 200mg/L 的 KBrO 以及 200mg/L 的 NaBrO 则显著降低休眠卵的产生。休眠卵的产生似乎为评价溴酸盐对轮虫有性繁殖影响提供了一个敏感的终点。
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