安徽农业大学学报2017，Vol.44Issue(2)：242-247,6.DOI:10.13610/j.cnki.1672-352x.20170419.003
双台子河口刀鲚不同年龄重点形态性状对体重的影响
Effects of major morphometric attributes on body weight of the different age Coilia nassu from Shuangtaizi estuary
摘要
Abstract
A total of 266 Coilia nassu species at 2+ to 5+ ages were collected.The total length(X1),body length(X2),body depth(X3),body width(X4),head length(X5),snout length(X6),eye diameter(X7),head length after eye(X8),interorbital distance(Xg) and body weight(Y) of each specie were measured.The relationship between morphometric attributes and body weight was analyzed by correlation coefficients,multiple regression analysis and path coefficients.The result showed the direct effect of body length to body weight of 2+ and 4+ ages was the biggest,while the body depth was major trait affecting the body weight of 3+ and 5+ages.The morphometric attributes were used to establish the multiple regression equations as Y=-7.186 + 3.617 X2 + 0.174X3 (R2=0.911);Y=-3.441 + 0.738X3+ 1.649X2 (R2=0.910);Y =-7.703 + 3.383X2 + 0.413X3 (R2=0.909);Y =-6.733 + 1.831X3 + 2.175X1 (R2=0.958).The results showed that it is very necessary to analyze continuously different developmental stages of fish in order to improve the accuracy of selective breeding.关键词
刀鲚/形态性状/相关分析/通径分析/多元回归方程Key words
Coilia nassu/morphometric attribute/correlation analysis/path analysis/multiple regression analysis分类
农业科技引用本文复制引用
霍堂斌,郑文军,李耕,赵荣伟,代尚英,那文学..双台子河口刀鲚不同年龄重点形态性状对体重的影响[J].安徽农业大学学报,2017,44(2):242-247,6.基金项目
中国水产科学研究院基本科研业务费和大辽河口鲚属鱼类早期资源调查研究(2014C02XK01)共同资助. （2014C02XK01）
