华中农业大学学报2025，Vol.44Issue(5)：118-125,8.DOI:10.13300/j.cnki.hnlkxb.2025.05.012
梨形环棱螺壳形性状与出肉率的相关性研究
Correlation analysis between shell morphological traits and meat yield rate of Bellamya purificata
摘要
Abstract
To investigate the shell morphological traits closely related to the meat yield rate of Bella-mya purificata,180 individuals of varying sizes,large(≥5 g),medium(3-5 g),and small(1-3 g)were randomly collected for study.After weighing,the parameters:shell height(X1),body whorl height(X2),spiral whorl height(X3),shell width(X4)and shell aperture height(X5)were measured.The abdominal foot muscle was then dissected to determine the net meat weight,and meat yield rate(Y).Then,correla-tion analysis,path analysis,and stepwise regression analysis were conducted to identify the key shell mor-phological traits associated with the meat yield rate.Multiple regression equations were established based on the results obtained.The results showed that,the meat yield rates of three sizes of B.purificata were signifi-cantly correlated with all five shell morphological traits(P<0.01).Among these traits,shell width exhibit-ed the highest correlation with meat yield rate,with correlation coefficients of 0.812,0.811,and 0.850 for large,medium,and small individuals,respectively.Path analysis results revealed that shell width,shell height,body whorl height,and spiral whorl height were significantly related to meat yield rate.Notably,shell width displayed the highest correlation with meat yield rate,with path coefficients of 0.534,0.705,and 0.850 for the three size categories.The regression equations for shell morphological traits(Xi)and meat yield(Y)were fitted by stepwise regression analysis as Y=-0.275+0.013X4+0.010X2-0.003X3,Y=-0.112+0.014X4-0.003X1+0.005X2 and Y=-0.078+0.019X4 for large,medium and small size individu-als,respectively.The results of this study indicated that shell width is the morphological trait most closely related to meat yield rate,and therefore it can be used as an indirect selection trait for the genetic improve-ment of meat yield in B.purificata.关键词
梨形环棱螺/出肉率/壳形性状/性状选育Key words
Bellamya purificata/meat yield rate/shell morphological traits/traits breeding分类
农业科技引用本文复制引用
田子楷,文衍红,罗福广,肖雄,周小云..梨形环棱螺壳形性状与出肉率的相关性研究[J].华中农业大学学报,2025,44(5):118-125,8.基金项目
国家重点研发计划项目(2022YFD2400700) （2022YFD2400700）
广西重点研发计划项目(桂科农AB2506910042) （桂科农AB2506910042）
