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不同藻类对大型溞存活和生殖的影响

史文;刘其根;吴晶;余员龙;刘国栋   

  1. 上海海洋大学农业部水产种质资源与利用重点开放实验室, 上海 201306
  • 收稿日期:2008-09-10 修回日期:1900-01-01 出版日期:2009-06-10 发布日期:2009-06-10

Effects of different algae on the survival and reproduction of Daphnia magna.

SHI Wen;LIU Qi-gen;WU Jing;YU Yuan-long;LIU Guo-dong   

  1. The Key Laboratory of Aquatic Genetic Resources and Utilization (AGRU) of the Ministry of Agriculture, Shanghai Ocean University, Shanghai 201306, China
  • Received:2008-09-10 Revised:1900-01-01 Online:2009-06-10 Published:2009-06-10

摘要: 通过生命表技术观察了大型溞(Daphnia magna)在实验室恒定温度(25 ℃)下分别以梅尼小环藻、铜绿微囊藻905、铜绿微囊藻469和斜生栅藻为饵料时的存活率和生殖量变化,并据此探讨了不同藻类对大型溞生活史特征的影响。结果表明:大型溞食用梅尼小环藻和铜绿微囊藻469后生长良好,大型溞在斜生栅藻中也能较好生长,而铜绿微囊藻905对大型溞的生长和繁殖均有不良影响;大型溞对不同藻类的净生殖率(R0)、世代历期(T)和内禀增长率(rm)及存活率有不同的影响,梅尼小环藻分别为44.35、11.86、0.32、5%;铜绿微囊藻469分别为48.20、14.25、0.27、30%;斜生栅藻分别为8.10、12.47、0.17、15%;铜绿微囊藻905分别为0、0、0、0。

关键词: 冬小麦, 渗透胁迫, 叶绿素荧光动力学

Abstract: By using life table analysis technology, the survival and reproduction of Daphnia magna fed with Cyclotella meneghinana, Microcystis aerugionosa 905, M. aerugionosa 469, and Scenedesmus obliquus were observed in laboratory under constant temperature condition (25 ℃), aimed to investigate the effects of different algae on the life history of D. magna. Among the test algae, C. meneghinana and M. aerugionosa 469 improved the growth of D. magna, S. obliquus had the similar effect as C. meneghinana and M. aerugionosa 469, while M. aeruginosa 905 gave negative impact on the growth and survival of D. magna. The net reproductive rate (R0), generation time (T), intrinsic rate of increase (rm), and survival rate of D. magna were 4435, 1186, 032, and 5% when fed with C. meneghinana, 4820, 1425, 027, and 30% when fed with M. aerugionosa 469, 810, 1247, 017, and 15% when fed with S. obliquus, and 0, 0, 0, 0 when fed with M. aerugionosa 905.

Key words: Winter wheat, Osmotic stress, Chlorophyll fluorescence kinetics