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| 不同暴露时间下Zn 2+和Cd2+对萼花臂尾轮虫种群增长的毒性影响 |
| The Toxicity of Zn2+ and Cd2+ to the Population Growth of Brachionus Calyciflorus under Different Exposure Time |
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| DOI： |
| 中文关键词: Zn2+ Cd2+ 联合毒性 暴露时间 萼花臂尾轮虫 种群增长率 |
| 英文关键词: Zn2+ Cd2+ Combined toxicity Exposure time Brachionus calyciflorus Population growth rate |
| 基金项目:安徽省高等学校自然科学研究重点基金资助项目(KJ2016A063)；安徽工程大学青年基金资助项目(2015YQ01)；安徽省教育厅提升计划一般基金资助项目(TSKJ2015B08) |
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| 中文摘要: |
| 采用群体累积培养方法，考察不同亚致死浓度水平的Zn2+、Cd2+和Zn2+-Cd2+在不同暴露时间下对萼花臂尾轮虫3 d种群增长率的影响。结果表明，随着暴露时间的延长，各处理组对轮虫种群增长的抑制作用在增加。Zn2+-Cd2+在中、低浓度处理组及短的暴露时间条件下表现为拮抗效应，而在高浓度处理组中表现为协同效应，且随着暴露时间的增加，协同作用效应在增加。 |
| 英文摘要: |
| The toxic effects of Zn2+, Cd2+, and Zn2+ Cd2+ on the population growth rate of the freshwater rotifer Brachionus calyciflorus were evaluated under different exposure time using the 3 d population cumulative culture method. The results showed that the inhibition of population growth of the rotifers increased with the extension of the exposure time. The toxic effect of Zn2+ Cd2+was antagonism under medium and low concentrations and shorter exposure time. However, the combined effect was synergistic under high concentrations, and increased with the extension of the exposure time. |
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