摘要
选择渐近体长Ｌ∞、渐近体重ｍ∞、生长系数Ｋ、初次性成熟年龄ｔｍ、最大年龄ｔｍａｘ、瞬时自然死亡率Ｍ和种群繁殖力系数Ｆｐ等７项生态学参数作指标，用主成分分析法研究了我国２８种淡水鱼类的生态对策类型。结果表明，施氏鲟等３种鲟科鱼类属典型的ｋ选择类型，鳜（雌）、赤眼鳟（东江）偏向ｋ选择类型，大眼鳜等８种鱼类偏向ｒ选择类型，银鲴等１０种鱼类属ｒ选择类型，尖头塘鳢等４种鱼类属较典型的ｒ选择类型，沙鳢属典型的ｒ选择类型。
Using the method of principal component analysis, the ecological strategy of 28 species of freshwater fish in China was studied by analysing seven ecological parameters: asymptotic body length L ∞,asymptotic body weight m ∞,growth coefficient K, primary reproductive age t m,maximum age t max , instantaneous natural mortality M and population fecundity F p. It was concluded that ecological strategy could be divided into six classes. Three species of strugeon Acipenser schrenckii etc. were typical k selection. Two species Siniperca chuatsi (female) etc. were k selection. Eight species Sinioerca kneri etc. were r selection. Ten species Xenocypris argentea etc. were r selection. Four species Eleotris oxycephola etc. belonged to relatively typical r selection and Odontobutis obacurus belonged to typical r selection.
出处
《湖北农学院学报》
1999年第1期42-45,共4页
Journal of Hubei Agricultural College
关键词
淡水鱼类
生态对策
成分分析
freshwater fish
ecological strategy
principal component analysis
r selection
k selection
