摘要
以15种已知生活史类型鱼类为参照,选择渐近体长(L∞)、渐近体重(W∞)、生长系数(k)、自然死亡系数(M)、初次性成熟年龄(Tm)、最大年龄(Tmax)和种群繁殖力系数(PF)等7个生态学参数作指标,采用模糊聚类分析法、主成分分析法、判别分析法和Beverton-Holt动态综合模型等4种方法判断为r-选择类型鱼类。作为渔业管理对策,北江的起捕年龄应定为3龄以上。
Compared with the life-history patterns of 15 species of fishes,the life-history pattern of Hemiculter leucisculus was studied by analyzing seven ecological parameters,including asymptotic body-length（L∞）,asymptotic body-weight（W∞）,growth coefficient（k）,natural mortality（M）,primary reproductive age（Tm）,maximum age（Tmax）and population fecundity（PF）.The results showed that the life-history pattern of Hemiculter leucisculus tended to be r-selected.Meanwhile,cluster analysis,principal component analyses,discriminant analysis and equilibrium yield model Beverton-Holt were performed to discuss the life-history pattern of Hemiculter leucisculus.As a strategy of fishery management,the harvesting age should be three years old will be advantageous to the conservation of resources.
出处
《四川动物》
CSCD
北大核心
2011年第3期348-352,共5页
Sichuan Journal of Zoology
基金
广东省科技计划项目(2005A20105001
2006B20701001
2006B20201002)
广东重大科技兴海(渔)项目(B200601G02)
广州大学创新团队项目资助(1001-1012)
关键词
聚类分析
主成分分析
生活史类型
Hemiculter leucisculus
cluster analysis
principal component analyses
life-history pattern
