长尾琉金金鱼形态性状的相关与通径分析  

The correlation and path analysis for morphometric attributes of the long tail ryukin

作　　者：杨璞[1] 穆祥兆[1] 梁拥军[1] 苏建通[1] 孙向军[1] 孙砚胜[1] 张升利[1] 史东杰[1] 

机构地区：[1]北京市水产科学研究所,北京100068

出　　处：《淡水渔业》2011年第1期83-86,共4页Freshwater Fisheries

基　　金：北京市重大科技项目(D09060500430901);观赏鱼产业技术体系北京市创新团队建设专项

摘　　要：测定了637尾1龄长尾琉金金鱼体重、体长、体高、头长、尾柄长、尾柄高、胸鳍长、腹鳍长、背鳍高、臀鳍长、尾鳍长等11个性状,计算性状间的相关系数,同时采用通径分析方法计算以形态性状为自变量对尾鳍长作依变量的通径系数、决定系数,对各性状的影响大小进行剖分。结果显示,尾柄高对尾鳍长的直接影响最大,胸鳍长和尾柄长对尾鳍长的直接影响较小。利用逐步回归分析方法建立了以尾柄长、尾柄高、胸鳍长为自变量估计尾鳍长的多元回归方程为y=-2.573+4.200x1+0.647x2+2.410x3。637 individuals of one-year-old long tail Ryukin were collected for measuring the morphometric attributes,including the body weigh,body length,body height,head length,tail handle length,tail handle height,pectoral fin length,ventral fin length,dorsal fin height,anal fin length and caudal fin length.The correlation coefficients among the attributes were calculated,and then path analysis was conducted by taking the caudal fin length as a dependent variable,and other ten morphometric attributes as independent variables.The results showed that the tail handle height had the most influnce to the caudal fin length;the pectoral fin length and the tail handle length followed.The multiple regression equation relating the caudal fin length was established as y=-2.573＋4.2x1＋0.647x2＋2.41x3,where y is caudal fin length,x1,x2,x3 is the tail handle height,pectoral fin length,and tail handle length,respectively.

关 键 词：长尾琉金金鱼(Carassius auratus var.) 形态性状 相关 通径分析 

分 类 号：S917[农业科学—水产科学] Q954[生物学—动物学]