安徽农业科学2016，Vol.44Issue(13)：173-176,4.
形态性状对长鳍吻鮈体质量的影响效果分析
Analysis on Effects of Rhinogobio ventralis Morphometric Traits on Body Weight
摘要
Abstract
[ Objective] The effects of Rhinogobio ventralis morphometric traits on body weight were analyzed, which will provide theoretical guidance for the artificial breeding of Rhinogobio ventralis. [ Method] 120 domesticated wild Rhinogobio ventralis were randomly selected, 16 traits including body weight( Y) , total length ( X1 ) , standard length ( X2 ) , body depth ( X3 ) , body width ( X4 ) , head length ( X5 ) , head width ( X6 ) , head depth ( X7 ) , snout length ( X8 ) , fork length ( X9 ) , eye diameter ( X10 ) , interorbital distance ( X11 ) , caudal peduncle length ( X12 ) , caudal peduncle depth ( X13 ) , caudal fin length ( X14 ) , length of the head behind the eye ( X15 ) were measured. The correla-tion, path coefficients, multiple correlation coefficient and determination coefficient between morphometric traits and body weight were calcu-lated by correlation analysis, path analysis, multiple correlation analysis and multiple regression analysis. [ Result] The correlationship be-tween independent variables (morphometric trait ) and dependent variable ( body weight ) were all at extremely significant level (P<0. 01). The path coefficients of total length, head length, head depth, eye diameter and length of the head behind the eye was at significant level (P<0. 05), and the multiple correlation coefficients was 0. 976. They were key impact factors to body weight. Among them total length was the most predominant variable to affect body weight (0. 663). The result of determinant coefficents analysis was consistent with that of path a-nalysis. It revealed that the determinant coefficients of total length, head length, head depth, eye diameter and length of head behind the eye were very large, among which total length had a predominant determinative effect (0. 440). Whereas head length, head depth, eye diameter and length of head behind the eye exhibited a slight direct effect and significant indirect effect on body weight via total length. The morphomet-ric attrbutes total length ( X1 ) , head length ( X5 ) , head depth ( X7 ) , eye diameter ( X10 ) and length of head behind the eye ( X15 ) were used to establish the multiple regression equations as Y= -30. 650+2. 534 X1 +2. 012 X5 +2. 019 X7 +8. 716 X10 +4. 120 X15 . The regression re-sults showed that there was no significant difference between estimated value and actual value(P>0. 05). [Conclusion] The equation can be used in actual production of Rhinogobio ventralis, provide theoretical basis and measurement indicators for breeding of Rhinogobio ventralis.关键词
长鳍吻鮈/形态性状/体质量/相关分析/通径分析/多元回归分析Key words
Rhinogobio ventralis/Morphometric traits/Body weight/Correlation analysis/Path analysis/Multiple regression analysis分类
农业科技引用本文复制引用
管敏,胡美洪,郭柏福,曲焕韬..形态性状对长鳍吻鮈体质量的影响效果分析[J].安徽农业科学,2016,44(13):173-176,4.基金项目
中国长江三峡集团公司资助项目。 （）
