温度和集胞藻浓度对轮虫生活史参数的影响
Effects of temperature andSynechocystis sp.PCC6803 on the life history parameters of Brachionus calyciflorus
投稿时间:2019-01-07  修订日期:2019-01-07
DOI:
中文关键词: 萼花臂尾轮虫  温度  集胞藻  净生殖率  世代时间  内禀增长率
英文关键词: Brachionus calyciflorus  Temperature  Synechocystis  Net reproductive rate  Generation time  Intrinsic growth rate.
基金项目:中央高校基础科学研究专项(CZP17012) ,姚慧
作者单位E-mail
耿红 中南民族大学 生命科学学院 genghong@mail.scuec.edu.cn 
姚慧 中南民族大学 生命科学学院  
摘要点击次数: 140
全文下载次数: 
中文摘要:
      本实验以萼花臂尾轮虫为研究对象,设置3种温度,4种集胞藻浓度,利用动态生命表法探讨了温度和集胞藻浓度对轮虫生活史参数的影响。结果表明,温度、集胞藻浓度以及两者的交互作用均对萼花臂尾轮虫种群的净生殖率(R<sub>0</sub>)、世代时间(T)和内禀增长率(r<sub>m</sub>)有极显著影响。温度为15℃时,轮虫的净生殖率随集胞藻浓度的升高而显著增加,温度升高为25℃和35℃时,轮虫的净生殖率随集胞藻浓度的升高出现下降的趋势。随温度的升高,轮虫世代时间明显缩短;相同温度下,不同实验组轮虫的世代时间也随集胞藻浓度的升高而趋于缩短。当温度为15℃时,轮虫的内禀增长率随集胞藻浓度的升高而显著增加,但是随着温度升高,集胞藻对于轮虫内禀增长率的促进作用明显减弱。结果显示,集胞藻可以为轮虫种群提供一定的营养,温度的升高降低了集胞藻对轮虫种群的促进作用,本结果为温度变化下浮游动物种群对不同蓝藻种类的响应提供数据基础。
英文摘要:
      The effects of temperature and different concentrations of Synechocystis sp. PCC6803 on the life history parameters of Brachionus calyciflorus were investigated. We conducted the dynamic life table experiment at three temperatures with four different concentrations of Synechocystis. The results showed that net reproductive rate (R<sub>0</sub>), generation time (T) and intrinsic growth rate (r<sub>m</sub>) of B. calyciflorus were significantly affected by the temperature, the concentration of Synechocystis and their interaction. When the temperature is 15℃, R<sub>0 </sub>was significantly increased with the increasing concentrations of Synechocystis. However, at the higher temperatures of 25℃ and 35℃, R<sub>0 </sub>tended to decrease with the increasing concentrations of Synechocystis. The generation time was shortened by the elevated temperature and high concentration of Synechocystis. The r<sub>m </sub>of rotifer was remarkably enhanced by the increased concentrations of Synechocystis at the temperature of 15℃. While, the promoting effect of Synechocystis on the r<sub>m</sub> has weakened with the elevated temperature. The results indicated that Synechocystis can provide certain nutrients for the rotifer population. The elevated temperature decreased the promotion effects of Synechocystis on the rotifer population. The results of this study can provide fundamental data about the response of zooplankton to cyanobacteria which suffered by the temperature changes.
View Fulltext   查看/发表评论  下载PDF阅读器
关闭