虾夷马粪海胆表型性状对性腺性状的影响效果分析  

Effects of phenotypic traits on gonad traits in sea urchins Strongylocentrotus intermedius

作　　者：张伟杰[1] 常亚青[1] 赵冲[1] 刘平晋[1] 宋坚[1] 

机构地区：[1]大连海洋大学农业部海洋水产增养殖学重点开放实验室,116023

出　　处：《渔业科学进展》2010年第3期49-55,共7页Progress in Fishery Sciences

基　　金：国家"863"计划重大项目(2006AA10A411);辽宁省科技攻关重大项目(2007203004)共同资助

摘　　要：从19月龄虾夷马粪海胆Strongylocentrotus intermedius养殖群体中随机选择600枚,测量了壳高(TH)、壳径(TD)、活体重(BW)、性腺湿重(GWW)、性腺颜色(L*a*b*)、性腺指数(GI)、性腺水分(GM)7个性状。采用相关分析和通径分析方法,计算了各性状间的相关系数,并定量分析了壳性状对活体重及表型性状(壳高、壳径、活体重)对性腺性状的影响效果。结果表明,壳性状与活体重极显著相关(P<0.01);4个性腺性状除构成性腺颜色性状的a*(绿-红)、b*(蓝-黄)分别与壳径、活体重呈显著相关(P<0.05),而与其他表型性状无显著相关外,L*(暗-亮)、性腺湿重、性腺指数和性腺水分与表型性状均达到极显著相关(P<0.01)。壳径对活体重的直接影响最大(0.717),活体重对性腺湿重的直接影响最大(0.598),壳径和活体重可作为间接选择性腺湿重的主要指标。利用曲线回归建立了壳性状预测活体重及活体重预测性腺湿重的最优模型:BW=0.001TD2.822(R2=0.984),GWW=0.039BW1.331(R2=0.753)。600 sea urchins Strongylocentrotus intermedius were randomly sampled from the 19-month old cultured population,and the test height（TH）,test diameter（TD）,live body weight（BW）,gonad wet weight（GWW）,gonad color（Lab）,gonad index（GI）,and gonad moisture content（GM）of each sample were measured.Correlation and path analysis were conducted to evaluate the phenotypic correlation coefficients between all the measured traits,and to determine the direct and indirect effects of the test traits on live body weight and the phenotypic traits on the gonad traits.The results showed that the test traits and live body weight were significantly correlated（P〈0.01）.Gonad color traits a（Green-Red）and test diameter as well as b（Blue-Yellow）and live body weight were significantly correlated（P〈0.05）,but both a and b were not significantly correlated with other phenotypic traits;L（Dark-Light）,gonad wet weight,gonad index and gonad moisture content were all significantly correlated with the phenotypic traits（P〈0.01）.Test diameter had the highest direct effect on live body weight with the value of 0.717,and live body weight had the highest direct effect on gonad wet weight with the value of 0.598,test diameter and live body weight should be considered as significant selection criteria in breeding for gonad wet weight.The optimal curvilinear regression equations were obtained to estimate live body weight and gonad wet weight as BW=0.001TD2.822（R2=0.984）,GWW=0.039BW1.331（R2=0.753）.

关 键 词：虾夷马粪海胆 表型性状 性腺性状 相关分析 回归分析 

分 类 号：S959[农业科学—水产养殖]