四角蛤蜊形态性状对重量性状的影响效果分析  

Effects of shell morphological traits on the weight traits of clam Mactra veneriformis Reeve along northern coast in China

作　　者：闫喜武[1] 王琰[1] 郭文学[1] 霍忠明[1] 张跃环[1] 杨凤[1] 张国范[2] 

机构地区：[1]大连海洋大学生命科学与技术学院,辽宁大连116023 [2]中国科学院海洋研究所,山东青岛266071

出　　处：《水产学报》2011年第10期1513-1518,共6页Journal of Fisheries of China

基　　金：现代农业产业技术体系建设专项资金资助(CARS-48);辽宁省教育厅创新团队项目(2007T104)

摘　　要：以随机选取的123只野生四角蛤蜊为材料,对其形态性状(壳长X1、壳高X2、壳宽X3)和重量性状(活体质量Y、软体质量Z)进行了测量,然后运用相关分析、通径分析和回归分析等分析方法研究形态性状对重量性状的影响。结果表明,5个数量性状间的相关系数均达到极显著水平(P<0.01)。形态性状对活体质量和软体质量的直接影响依次为壳宽>壳长>壳高。壳宽是影响活体质量和软体质量的主要因素,其决定系数分别为0.302 5和0.224 7。多元回归分析建立了估计活体质量、软体质量的最优回归方程:Y=-19.537+0.244X1+0.266X2+0.732X3、Z=-2.456+0.035X1+0.035X2+0.089X3。123 clams Mactra veneriformis Reeve were randomly sampled in April 2010.The shell length（X1）,height（X2）,width（X3）,and the live body weight（Y）and edible tissue weight（Z）were measured.The shell morphological traits were used as independent variables,and live body weight or edible tissue weight used as a dependent variable for calculating the path coefficients,correlation index and determinant coefficients.The direct and indirect effects of all shell morphological traits on weight traits were analyzed and a multiple regression equation was obtained.The results showed that the live body weight and edible tissue weight were significantly correlated with the three shell morphological traits（P0.01）.The direct effects of three shell morphological traits on live body weight and edible tissue weight were in order of shell widthsshell lengthsshell heights.Shell width had greatest direct effect on the live body weight and was the key influencing factor.The determinant coefficients of shell width on live body weight and edible tissue weight were 0.302 5 and 0.224 7.The multiple regression equations were obtained to estimate live body weight and edible tissue weight as Y=-19.537＋0.244X1＋0.266X2＋0.732;Z=-2.456＋0.035X1＋0.035X2＋0.089X3.This study shows in selective breeding of M.veneriformis Reeve the shell width was the ideal measurement index.The results provide a theoretical basis for breeding of M.veneriformis Reeve.

关 键 词：四角蛤蜊 形态性状 重量性状 相关分析 通径分析 

分 类 号：Q178.1[生物学—水生生物学] S917.4[生物学—普通生物学]