魁蚶两个不同群体形态性状对体质量的影响效果分析  

The relationship between morphometric traits and body weight of Scapharca broughtonii in two different populations

作　　者：吴彪[1] 杨爱国[1] 刘志鸿[1] 周丽青[1] 邱梅 辛梅 李靖 

机构地区：[1]农业部海洋渔业资源可持续利用重点开放实验室中国水产科学研究院黄海水产研究所,青岛266071 [2]青岛康地恩药业有限公司,266061 [3]青岛市渔业技术推广站,266071

出　　处：《渔业科学进展》2010年第6期54-59,共6页Progress in Fishery Sciences

基　　金：国家863计划项目(2006AA10A408);国家科技支撑计划项目(2006BAD01A00);黄海水产研究所基本科研业务费(2060302)共同资助

摘　　要：随机选取中国江苏与韩国通营两个不同地理群体魁蚶,分别测量壳长(X1)、壳高(X2)、壳宽(X3)、壳顶宽(X4)、外韧带长(X5)、背缘长(X6)和放射肋宽(X7)等7个形态性状指标并称量活体重(Y),采用多元分析方法分析了各形态性状对体质量的影响效果。结果表明,两群体魁蚶各形态性状对体重的影响效果不同。江苏魁蚶各性状相关性都达到极显著水平,壳长、壳高和壳宽对体重的直接影响和辅助其他性状的间接影响作用较大;通营魁蚶各性状相关性没有全部达到极显著水平,壳长对体重的直接影响和辅助其他各性状间接影响体重的作用最大。经显著性分析,将偏回归系数显著的变量对体质量建立多元回归方程,分别为:江苏魁蚶Y=-77.05+1.366X1+1.306X3;通营魁蚶Y=-108.22+1.979X1+0.964X2,两方程的回归系数均达到极显著水平。To study the difference in morphological traits of the Scapharca broughtonii Schrenck between Jiangsu population and Tongying population,samples were collected from the two populations.The shell length（X1）,shell height（X2）,shell width（X3）,umbo length（X4）,outer ligament length（X5）,dorsal edge length（X6）,radial rib length（X7）,and the live body weight（Y）were measured individually.The correlation between the phenotypic data and the body weight,the direct and indirect effect of body size on body weight were analyzed by correlation analysis and path analysis,and then the regression equation was established by using morphological traits as independent variables and the body weight as dependent variable.The results showed that correlation coefficients between each phenotypic traits and body weight were all significantly different（P0.01）in the two populations.The shell length（X1）,shell width（X3）and shell width（X3）had major direct and indirect effects on the body weight for Jiangsu population,while for the Tongying population the shell length（X1）was the key factor that affecting body weight.The multiple regression equation established for the two bloody clams were：1）For Jiangsu population Y =-77.05＋1.366X1＋1.306X3;2）For Tongying population Y =-108.22＋1.979X1＋0.964X2.This study provided a theoretical basis for bloody clam breeding and morphologic study.

关 键 词：魁蚶 形态性状 相关分析 回归分析 

分 类 号：Q789[生物学—分子生物学]