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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.湖泊科学,1999,11(4):328-332. DOI:10.18307/1999.0407
HE Jian,GU Xiaohong,ZHUANG cheng.Feedback Culture of Daphnia obtusa Kurz and Purification of Sewage in the “Algae-River Snail-Water Flea” System. J. Lake Sci.1999,11(4):328-332. DOI:10.18307/1999.0407
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短钝溞(Daphnia obtusa Kurz)在“藻-螺-溞”系统中的反馈养殖与污水净化
何健1, 谷孝鸿2, 黄诚3
1.南通市水产研究所, 南通 226000;2.中国科学院南京地理与湖泊研究所, 南京 210008;3.南京大学生物科学与技术系, 南京 210093
摘要:
利用人工配制的生活污水先进行单胞藻(斜生栅藻 Scenedesmus obliquusTurp)的培养,再接种田螺(Cipipangopaludina sp)和短钝溞(Daphnia obtusa Kurz), 对栅藻密度的经时变化, 短钝溞种群增长及水体中氮、磷、碳在培养过程中的变化作了测定与分析结果如下:(1)田螺组和 对照组中栅藻密度(N)经时变化的函数为:田螺组N=e(1.1136)t(1.7204); 对照组N=e(1.4175)t(1.8099);(2)田 螺组短钝溞在静态条件下的种群增长模型为:N=0.75e(0.476)t,(3)(以短钝溞问收方式收获量的累加 值作为种群增长量(产出量),其数学模型为:N=e(0.2877)t(2.5537);(4)经栅藻、田螺、短钝溞培养后,生 活污水的氮、磷、碳含量分别下降了 80、60%, 72. 40%, 45. 70%. 本研究既为枝角类集约化培养提供了某些生态学理论参数,也为污水调控及资源化提出一个 值得参考的技术途径
关键词:  生活污水  栅藻  短钝溞  反馈养殖
DOI:10.18307/1999.0407
分类号:
基金项目:国家“九五”攻关项目(96-008-04-02);南京大学分析中心测试基金
Feedback Culture of Daphnia obtusa Kurz and Purification of Sewage in the “Algae-River Snail-Water Flea” System
HE Jian1, GU Xiaohong2, ZHUANG cheng3
1.Nantong Fishery institute, Nantong 226000;2.Nanjing institute of Geography Limnology, Chinese Academy of Sciences, Nanjing 210008;3.Department of Biology, Nanjing University, Nanjing 210093
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.
Key words:  Daphnia obtusa Kurz  Scenedemus obLiquus Turp  feedback culture  purfica-tion of sewage
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