花鲈幼鱼形态性状与体质量影响关系的通径分析  

Path Coefficinet Analysis of Relationship Between Morphometric Traits and Body Weight of Juvenile Japanese Sea Perch Lateolabrax maculatus

作　　者：董义超[1] 盛伟博 于会国[1] 马振华[3] 李欣贤 杨涛 张忠[1] 张恒旭 宋顺杰 DONG Yichao;SHENG Weibo;YU Huiguo;MA Zhenhua;LI Xinxian;YANG Tao;ZHANG Zhong;ZHANG Hengxu;SONG Shunjie(Weifang Key Laboratory of Fishery Diseases,Weifang Key Laboratory of Enzyme and Microecology,Shangdong Vocational College of Science&Technology,Weifang 261053,China;Dalian Xinyulong Ecological Feed Technology Co.Ltd.,Dalian 116023,China;Tropical Fishery Research and Development Center,South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Sanya 572018,China;Dongying Shuangyu Aquatic Seeding Co.Ltd.,Dongying 257000,China)

机构地区：[1]山东科技职业学院,潍坊市渔业病害重点实验室,潍坊市酶与微生态重点实验室,山东潍坊261053 [2]大连鑫玉龙生态饲料科技有限公司,辽宁大连116023 [3]中国水产科学研究院南海水产研究所热带水产研究开发中心,海南三亚572018 [4]东营双灜水产苗种有限公司,山东东营257000

出　　处：《水产学杂志》2021年第1期29-34,39,共7页Chinese Journal of Fisheries

摘　　要：随机选取室内养殖的5月龄花鲈Lateolabrax maculatus幼鱼120尾,测定了全长(X_(1))、体长(X_(2))、体高(X_(3))、头长(X_(4))、眼后头长(X_(5))、吻长(X_(6))、眼径(X_(7))、尾柄长(X_(8))、尾柄高(X_(9))、躯干长(X_(10))、体宽(X_(11))、眼间距(X_(12))和体质量(Y),通过相关分析和通径分析探寻影响体质量的主要形态性状,结合逐步回归分析建立了形态性状对体质量回归方程,为花鲈优良形态性状的选育提供参考。结果显示:5月龄花鲈各形态性状相关系数达到显著水平(除眼间距、眼后头长分别与眼径不显著外);体质量受体高直接影响作用最大(0.3966),其次为全长、体宽、眼径。这4个性状对体质量的共同决定系数总和为0.8822,表明体质量主要受这4个性状的影响。经多元回归分析,建立5月龄花鲈多元回归方程:Y=-3.434+0.033X1+0.138X3-0.064X7+0.295X11(R2=0.882)。在对花鲈以体质量为主进行亲本选育时,应以体高(X_(3))为主要选择性状,全长(X_(1))、体宽(X_(7))、眼径(X_(1))为辅进行选育。A total of 120 individuals of 5-month-old Japanese sea perch Lateolabrax maculatus juveniles were randomly sampled from a farm,and total length(X_(1)),body length(X_(2)),body depth(X_(3)),head length(X_(4)),and head length posterior to eyes(X_(5)),snout length(X_(6)),interorbital(X_(7)),caudal peduncle length(X_(8)),caudal peduncle depth(X_(9)),trunk length(X_(10)),body width(X_(11)),distance between eye(X_(12)),and body weight(Y)were measured to explore the main morphological traits affecting body weight,and a regression equation for morphological traits to bodyweight by correlation analysis and path analysis in combination with stepwise regression analysis,aiming to provide reference for selective breeding of Japanese sea perch.The results showed that there was significant correlation coefficient between all of the morphometric attributes and body weight except for X_(12),X_(5)and X_(7).The path analysis revealed that body height directly affected body weight in(0.3966),followed by total length,body depth,and eye diameter.The analysis of determination coefficients showed that the total decision coefficient of four morphological traits to body weight was 0.8822,indicating that those morphological traits were the main factors influencing body weight.The regression equation between morphological traits and body weight was expressed as:Y=-3.434+0.033X_(1)+0.138X_(3)-0.064X_(7)+0.295X11(R^(2)=0.882)in 5-month-old Japanese sea perch.The findings indicate that the body depth(X_(3))should be the main selective trait for broodstock sea bass,and that total length(X_(1)),body width(X_(7))and eye diameter(X_(11))as auxiliary selective traits.

关 键 词：花鲈 形态性状 相关分析 通径分析 

分 类 号：S917.4[农业科学—水产科学]