| 短钝溞（Daphnia obtusa Kurz)在“藻-螺-溞”系统中的反馈养殖与污水净化 |
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| 引用本文： | 何健,谷孝鸿,黄诚.短钝溞（Daphnia obtusa Kurz)在“藻-螺-溞”系统中的反馈养殖与污水净化[J].湖泊科学,1999,11(4):328-332. |
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| 作者姓名： | 何健 谷孝鸿 黄诚 |
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| 作者单位： | 中国科学院水生生物研究所!武汉430072 |
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| 基金项目： | 国家科技攻关!96－008－02－03，中国科学院“九五”重大项目!KZ951－A1－102 |
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| 摘 要： | 本文对河蟹幼蟹蜕壳过程及蜕壳后的特征进行了比较斩观察，并初步探讨了蜕壳与光照，温度及生境的关系。对于０．５－２ｇ的幼蟹，蜕壳期大约需要３－６ｈ，软壳期需要２ｈ，薄壳期需要１５ｈ，幼蟹特别喜欢选择有草的生境作为蜕壳地点，也喜欢在池塘浅水区蜕壳，但是在２ｍ以内水深对蜕壳成功没有影响。
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| 关 键 词： | 中华绒螯蟹 蜕壳 生态环境 光照强度 幼蟹 |
| 收稿时间： | 1998/2/23 0:00:00 |
| 修稿时间： | 1998/9/15 0:00:00 |
Ecological Observations on Molting of Juveniles of the Chinese Mitten Crab, Eriocheir sinensis |
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| HE Jian,GU Xiaohong and ZHUANG cheng.Ecological Observations on Molting of Juveniles of the Chinese Mitten Crab, Eriocheir sinensis[J].Journal of Lake Science,1999,11(4):328-332. |
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| Authors: | HE Jian GU Xiaohong and ZHUANG cheng |
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| Institution: | Nantong Fishery institute, Nantong 226000,Nanjing institute of Geography Limnology, Chinese Academy of Sciences, Nanjing 210008 and Department of Biology, Nanjing University, Nanjing 210093 |
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| Abstract: | Using artifical sewage to culture the single-celled agela (Scenedemus obLiquus Turp) until the biological abandance up to 1.7×104 individual· ml-1, the river snail (Cipangopaludina sp.) and water fleas (Daphnia obtusa Kurz) were inoculated into the sewage. The population dynamics of the algae and water fleas were described. The results were summarized as follows. (l)The changes of the alga density by times were shown to be exponential function. (2) In the still culture stage without harvest, the population growth curve of Daphnia obtusa Kurz was shown as: InN =-0.06410+0.44041; (3)During the stage of interval harvest, the equation of accummu-lated yield was shown to be diplo-logarithmic function:InN = 0.2836+2.5537 Int. (4)The compositions of nitrogen, phosphorus, carbon of the sewage were analized as the feedback culture decreased 80.60%, 72.40% and 45.70%, respectively. |
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| Keywords: | Eriocheir sinensis molt habitat illumination temperature |
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