铜鱼生活史类型的模糊模式识别  

Study on Life History Pattern of Coreius heterodon Bleeker by Fuzzy Pattern Recognition

作　　者：杨严鸥 甘永成[1,2] 姚峰[1,2] 

机构地区：[1]湖北农学院动物科学系 [2]湖北农学院电算中心

出　　处：《湖北农学院学报》1998年第4期340-342,共3页Journal of Hubei Agricultural College

摘　　要：以典型的ｋ－选择类型的达氏鳇和典型的ｒ－选择类型的尖头塘鳢作参照物，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，用模糊聚类分析法研究了铜鱼的生活史类型，表明铜鱼属ｒ－选择类型鱼类。建议为了保护资源并获得较好的经济效益，应使捕捞强度不超过０６起捕年龄不超过３龄。Compared with the life history patterns of Huso dauricus  (a kind of typical fish of k selection) and Eleotris oxycephala (a kind of typical fish of r selection), the life history pattern of Coreius heterodon  was studied by analyzing seven ecological parameters: asymptotic body length (L ∞), asymptotic body weight (m ∞), growth coefficient (K), primary reproductive age (t m), maximum age(t max ), instaneous natural mortality (M) and population fecundity coefficient (F p) using fuzzy cluster analysis. The results indicated that the life history pattern of Coreius heterodon  belonged to r selection. For protecting the resources and gaining better economic efficiency, the harvesting strength should not be higher than 0.6 and the first fishing age should not be over 3 years old.

关 键 词：铜鱼 生活史类型 模糊聚类分析 

分 类 号：S965.127[农业科学—水产养殖]