不同壳色和性别栉孔扇贝群体的性状相关性及通径分析  

Correlation and path analysis of traits of male and female Chlamys farreri with different shell colors

作　　者：赵春暖 于涛[1,2] 郑言鑫 李波[1,2] 王喜文 蔡忠强 王晓梅[1,2] 任利群 徐帅 吴玉萍[1,2] 吴楠 张明燡[1,2] ZHAO Chunnuan;YU Tao;ZHENG Yanxin;LI Bo;WANG Xiwen;CAI Zhongqiang;WANG Xiaomei;REN Liqun;XU Shuai;WU Yuping;WU Nan;ZHANG Mingyi(Changdao Enhancement and Experiment Station,Chinese Academy of Fishery Sciences,Yantai 265800,China;Engineering Technology Research Center of Shellfish and Algae Breeding,Chinese Academy of Fishery Sciences,Yantai 265800,China)

机构地区：[1]中国水产科学研究院长岛增殖实验站,山东烟台265800 [2]中国水产科学研究院贝藻繁育工程技术研究中心,山东烟台265800

出　　处：《中国水产科学》2023年第3期268-283,共16页Journal of Fishery Sciences of China

基　　金：现代农业产业技术体系专项资金资助项目(CARS-49);中央级公益性科研院所基本科研业务费专项经费项目(2020YJ05,2020TD66).

摘　　要：为了优化栉孔扇贝(Chlamys farreri)选育中的亲贝选择策略,以长岛海域栉孔扇贝浅红和棕黄两个壳色群体为研究对象,通过测定壳长(X1)、壳宽(X2)、壳高(X3)、前耳长(X4)、绞合线长(X5)、绞合线宽(X6)6个形态性状,以及湿重(Y)、软体重(Z)和闭壳肌重(W)3个重量性状,采用相关分析和通径分析方法,研究两种壳色群体整体及其雌雄群体与重量性状显著相关的形态性状,分别构建栉孔扇贝形态性状与重量性状间的回归方程。研究结果表明,闭壳肌重的变异系数最高(0.30);棕黄雄性群体壳宽与闭壳肌重不相关,其余群体6个形态性状与3个重量性状间均存在显著相关关系(P<0.05),浅红群体、浅红雄性群体、浅红雌性群体、棕黄群体、棕黄雄性群体、棕黄雌性群体中对湿重(Y)、软体重(Z)直接影响程度最大的形态性状均为壳长,壳长对湿重的通径系数依次为0.602、0.645、0.580、0.527、0.752、0.343,壳长对软体重的通径系数依次为0.677、0.664、0.770、0.566、0.793、0.688;浅红群体、浅红雄性群体、浅红雌性群体、棕黄群体及棕黄雄性群体对闭壳肌重直接影响程度最大的形态性状为壳长,壳长对闭壳肌重通径系数依次为0.726、0.751、0.717、0.534、0.488,而棕黄雌性群体对闭壳肌重直接影响程度最大的形态性状为壳宽,壳宽对闭壳肌重的通径系数为0.425。浅红群体中作用显著的形态性状对闭壳肌重的直接影响程度显著高于棕黄群体,棕黄群体对闭壳肌重作用显著的形态性状存在雌雄差异。各实验群体决定系数与通径分析结果一致。结论认为,在栉孔扇贝选育过程中,针对不同的选育目标,挑选不同壳色的雌雄亲本应参考的形态性状不同,重点以壳长为主要选择性状,同时关注其他形态性状的协同选择。Chlamys farreri is the primary,economically important shellfish in northern China.When researching high-quality artificial breeding C.farreri,selecting parents with excellent traits is particularly important due to the influence of germplasm.To optimize the selection strategy of parent scallops in artificial breeding,we collected male and female C.farreri with different shell colors from the Changdao sea area and analyzed the relationship between morphological and weight traits.The morphological traits were measured with a vernier caliper and included shell length(X1),shell width(X2),shell height(X3),anterior ear length(X4),hinge length(X5),and hinge width(X6).The weight traits were measured using an electronic balance and included wet weight(Y),tissue weight(Z),and adductor weight(W).Weight and morphological traits of male and female C.farreri with two shell colors were correlated using correlation analysis and path analysis.The morphological traits that were significantly correlated with weight traits were identified for each group.Regression equations were established between morphological traits and weight traits for C.farreri.The results showed that the coefficient of variation of adductor weight was the largest(0.30).There was no significant correlation between shell width and adductor weight in the male population with pale brown shell color,while there were significant correlations between 6 morphological traits and 3 weight traits in other groups(P<0.05).In the groups with light red and pale brown shell colors,shell length had the largest direct effect on wet weight and tissue weight.In the group of all scallops with light red shell color,the male group with light red shell color,the female group light red shell color,the group of all scallops with pale brown shell color,the male group with pale brown shell color,and the female group pale brown shell color,the path coefficients of shell length on wet weight were 0.602,0.645,0.580,0.527,0.752,and 0.343,respectively.The path coefficients of shell length on

关 键 词：栉孔扇贝 壳色 相关性 通径分析 

分 类 号：S917[农业科学—水产科学]