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Effects of Morphological Traits on Body Mass of Triplophysa (Hedinichthys) yarkandensis (Day)

CHEN Sheng-ao;YAO Na;SONG Yong;WANG Shuai;XIE Cong-xin   

  • Received:2017-03-25 Revised:2017-03-25 Online:2017-03-25 Published:2017-03-25

塔里木河叶尔羌高原鳅形态性状对体质量的影响

陈生熬;姚娜;宋勇;王帅;谢从新   

  1. 塔里木大学动物科学学院,新疆阿拉尔 843300;华中农业大学水产学院,湖北武汉 430070;塔里木大学动物科学学院,新疆阿拉尔,843300;华中农业大学水产学院,湖北武汉,430070

Abstract: [Objective] This paper aims to study the effects of the morphological traits of 1,2 and 3 years old Triplophysa(Hedinichthys)yarkandensis(Day)individuals on their body mass.[Method]Using correlation analysis,path analysis and multiple linear regression method.[Result]For the 1 year old T.yarkandensis(Day)individuals,the correlation coefficients of body mass with body height,eye diameter,body length,body width,and beard length were 0.540,0.694,0.030,0.286 and-0.170,respectively(P<0.05),and the path coefficients also reached very significant level(P<0.05).Body height,body width and beard length had significant influence on body weight,respectively(P<0.05).The related multiple regression equation was Y=1.510+0.897X4-7.377 X8+0.23 X1+0.32 X5+0.674 X6.For the 2 years old T.yarkandensis(Day)individuals,head length,body height and body width were 0.665,0.551 and 0.224,respectively(P<0.05),and the path coefficients also reached very significant level(P<0.05).Head length had significant influence on body weight,respectively(P<0.05).The related multiple regression equation was Y=-0.605+2.487 X2+1.437 X4+0.393 X5.For the 3 years old T.yarkandensis(Day)individuals,body height,head length,body width and eye diameter were 0.771,0.719,0.604 and 0.189,respectively(P<0.05),and the path coefficients also reached very significant level(P<0.05).Body width and eye diameter had significant influence on body weight,respectively(P <0.01).The related multiple regression equation was Y=-6.640+0.579 X1+1.812 X2+2.782 X5+4.573 X8.[Conclusion]At the different stages of 1,2,3 years old fish,different biological indicators should be used to choose different fish in the breeding of T.yarkandensis(Day).

摘要: [目的]研究1龄、2龄和3龄叶尔羌高原鳅形态性状对体质量的影响.[方法]采用相关分析、通径分析和多元线性回归等分析方法相结合.[结果]1龄组,叶尔羌高原鳅体高、眼径、体长、体宽、须长与1龄体质量的相关系数分别为0.540、0.694、0.030、0.286、-0.170,差异显著(P<0.05).1龄体质量的通径系数差异显著(P<0.05);体高、体宽和须长应对体质量影响颇大,差异显著(P<0.05),拟合方程为Y=1.510+0.897X4-7.377 X8+0.23 X1+0.32 X5+0.674 X6;2龄组,叶尔羌高原鳅头长,体高,体宽与体质量的相关系数依次为0.665、0.551、0.224,通径系数差异显著(P<0.05),在2年龄组中,头长对体质量的影响颇大(P<0.05),拟合方程为Y=-0.605+2.487 X2+1.437 X4+0.393 X5;3龄组,叶尔羌高原鳅体长、头长、体宽、眼径与其体质量相关系数分别为0.771、0.719、0.604、0.189,差异显著(P<0.05),通径系数差异显著(P<0.05),体宽和眼径对体质量的影响颇大,差异极为显著(P<0.01),拟合方程为Y=-6.640+0.579 X1+1.812 X2+2.782 X5+4.573 X8.[结论]在叶尔羌高原鳅的选育中,在1、2、3龄中采用不同年龄阶段应该选择不同的生物性状指标来进行选择不同的鱼类.