Position: Home > Articles > Correlation and path coefficient analysis on body weight and morphometric traits of Hexagrammos agrammus at 6-month-old
Journal of Fisheries Research
2022,44
(1)
52-59
6月龄斑头鱼形态性状与体质量的相关性和通径分析
作 者：
王晓龙;李莉;王雪;菅玉霞;高凤祥;郭文;宋宗诚;岳新璐;胡发文
单 位：
威海圣航水产科技有限公司;山东省海洋科学研究院青岛市海洋生物种质资源挖掘与利用工程实验室山东省海洋养殖病害防治重点实验室
关键词：
斑头鱼;形态性状;体质量;相关分析;通径分析
摘 要：
为研究6月龄斑头鱼形态性状对体质量的影响,采用相关性分析、回归分析和通径分析的方法,对220尾斑头鱼的全长(X_1)、体长(X_2)、头长(X_3)、躯干长(X_4)、尾柄长(X_5)、尾柄高(X_6)、体高(X_7)和体宽(X_8)8个形态性状和体质量(Y)进行测量和分析。结果表明,所测量的8个形态性状与体质量的相关性均达到极显著水平(P<0.01)。通径分析表明,体长、体宽、全长、头长和体高是影响体质量的主要形态性状。决定系数显示,体长的单独决定系数最大,为0.299;全长和体长的共同决定系数最大,为0.244;总的决定系数为0.923,表明对6月龄斑头鱼体质量有影响的主要形态性状全部纳入。研究建立了最优的回归方程为Y=-8.900+0.467X_1+1.247X_2+0.274X_3+0.169X_7+1.866X_8。对6月龄斑头鱼选育的过程中,除考虑体质量外,还应考虑全长和体长。
译 名：
Correlation and path coefficient analysis on body weight and morphometric traits of Hexagrammos agrammus at 6-month-old
作 者：
WANG Xiaolong;LI Li;WANG Xue;JIAN Yuxia;GAO Fengxiang;GUO Wen;SONG Zongcheng;YUE Xinlu;HU Fawen;Qingdao Engineering Laboratory of Exploration and Utilization of Marine Germ Plasm Resources; Key Laboratory of Disease Control for Aquaculture in Shandong Province, Marine Science Research Institute of Shandong Province;Weihai Shenghang Aquatic Science and Technology Co.,Ltd.;
关键词：
Hexagrammos agrammus;;morphological traits;;body weight;;correlation analysis;;path analysis
摘 要：
To study the effect of morphological traits on body weight in the early stage, and to provide reference for the selection and breeding of fine varieties, the total length(X_1),body length(X_2),head length(X_3),trunk length(X_4),caudal stalk length(X_5),caudal stalk height(X_6),body height(X_7),body width(X_8) and body weight(Y) were measured and analyzed by means of correlation analysis, regression analysis and path analysis.The results showed that the correlations between the 8 morphological traits and body weight reached a very significant level(P<0.01).Path analysis showed that body length, body width, full length, head length and body height were the main morphological traits that affected body weight.The determination coefficient showed that the single determination coefficient of body length was the largest, which was 0.299,while the joint determination coefficient of body length and full length was the largest, which was 0.244,and the total determination coefficient was 0.923.The results showed that all the main morphological characters which had influence on the body weight of 6-month-old spotted head fish were included.The optimal regression equation was established as Y=-8.900+0.467X_1+1.247X_2+0.274X_3+0.169X_7+1.866X_8.In the breeding process of 6-month-old spotted head fish, body length and body length should be considered as well as body weight.
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