摘要
对不同性别栉孔扇贝的壳长、壳高、壳宽和绞合线长4个壳性状及体质量、软体质量及闭壳肌质量3个质量性状进行了测量。比较重要经济性状及壳形态在性别间的差异,分别在雌雄群体内,应用相关分析、通径分析等方法计算壳性状与质量性状间的相关系数、通径系数和决定系数,并利用逐步回归方法建立壳性状对质量性状的回归方程。试验结果表明,雌雄群体间重要经济性状及壳形态间无显著差异(P>0.05);雌雄群体各性状间表型相关系数均达到极显著水平(P<0.01),雌性群体相关系数普遍高于雄性;雄性群体中对体质量直接影响最大的壳性状为壳长,其次为壳高,而雌性群体中对体质量直接影响最大的壳性状为壳高,壳长影响极小;雌性群体中对软体质量直接影响最大的壳性状为壳高,其次为壳长和壳宽,而雄性群体中,仅壳高对软体质量的直接影响较大。雌雄群体间壳性状对质量性状的回归方程亦有较大不同。
The shell length （SL）, shell height （SH）, shell width （SW）, hinge length （HL）, body weight （BW）, Soft part weight （FW） and adductor muscle weight （AMW） were measured and compared in male and female scallop Chlamys farreri. Multivariates such as correlation analysis, and path analysis were used to calculate correlation coefficients, path coefficients and determinant coefficient. Regression equation between weight traits and shell traits were established by stepwise regression analysis. The results showed that there were no significant difference in economic important traits between genders （P 〉 0. 05）. Correlation coefficients between these traits were significant both in male and female populations （P〈 0.01）, generally higher in females than those in the males. For males, SL was shown to have the maximal direct effect on BW, followed by SH. In the females, SH was shown to have the maximal direct effect while SL gave very slight effect. SH gave the maximal direct effect on FW in female, followed by SL and SW. For the males, only SH gave the maximal direct effect. There were different regression equations between weight traits and shell traits between the males and females.
出处
《水产科学》
CAS
北大核心
2013年第8期441-446,共6页
Fisheries Science
关键词
栉孔扇贝
性别
通径分析
多元回归
Chlamys farreri
gender
path analysis
multivariate regression
