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陈其羽. 武汉东湖铜锈环棱螺种群变动和生产量的初步观察[J]. 水生生物学报, 1987, 11(2): 117-130.
引用本文: 陈其羽. 武汉东湖铜锈环棱螺种群变动和生产量的初步观察[J]. 水生生物学报, 1987, 11(2): 117-130.
Chen Qiyu. A PRELIMINARY STUDY ON THE POPULATION DYNAMICS AND ANNUAL PRODUCTION OF BELLAMYA AERUGINOSA (REEVE) IN LAKE DONG HU, WUHAN[J]. ACTA HYDROBIOLOGICA SINICA, 1987, 11(2): 117-130.
Citation: Chen Qiyu. A PRELIMINARY STUDY ON THE POPULATION DYNAMICS AND ANNUAL PRODUCTION OF BELLAMYA AERUGINOSA (REEVE) IN LAKE DONG HU, WUHAN[J]. ACTA HYDROBIOLOGICA SINICA, 1987, 11(2): 117-130.

武汉东湖铜锈环棱螺种群变动和生产量的初步观察

A PRELIMINARY STUDY ON THE POPULATION DYNAMICS AND ANNUAL PRODUCTION OF BELLAMYA AERUGINOSA (REEVE) IN LAKE DONG HU, WUHAN

  • 摘要: 本文报道了东湖环棱螺的种群密度、年龄结构、种群增长率和生物量、生产量、P/B系数及其在不同湖区中的季节变化;用指数生长模型计算种群增长率。以累计总增长的方法估算种群生产量。研究结果表明,水果湖区铜锈环棱螺年平均生物量为554.37克·米-2,累计生产量为604.99克·米-2·年-1,P/B系数为1.09;郭郑湖区平均生物量为286.74克·米-2,生产量为308.99克·米-2·年-1,P/B系数为1.08。本文还对影响铜锈环棱螺的种群变动和生产量的生态因子作了扼要的分析。

     

    Abstract: On the basis of the data obtained from field quantitative samples and cage stocking, the paper presents the population density, age structure population growth, biomass, production. P/B ratio and seasonal dynamics of Bellamya aeruginosa in various districts of Lake Dong Hu from April, 1982 to March, 1983. Population growth-rate was estimated by means of exponential growth model, and production was calculated by accumulative increase method. The result shows that the annual average biomass of Bellamya aeruginosa in Shui Guo Hu district was 554.37g穖-2, the cumulative production was 604.99g穖-2 year-1, and the coefficient of P/B was 1.09. In Guo Zheng Hu district the average biomass was 286.74g穖-2, the production was 308.99 g穖-2 year-1, and the coefficient of P/B was 1.08.Ecological factors that influence the population dynamics and prodution of Bellamya aeruginosa are discussed briefly.

     

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