Correlation and path analysis on relationship between morphological traits and body mass and soft tissue mass in the whelk Volutharpa ampullacea Perryi
HAN Senrong, LI Chunmao, LI Tingting, SUN Jihong,ZOU Wenjing, ZHAO Tanjun, ZHAN Yaoyao, CHANG Yaqing
1.Key Laboratory of Mariculture & Stock Enhancement in North China’s Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian 116023, China； 2.Dalian Ocean Island Fisheries Group Company Limited, Dalian 116500, China
Abstract: In order to understand the effects of morphological traits on qualitative traits of the whelk Volutarpaampullacea Perryi distributed in the northern Yellow Sea (China), eight morphological traits (X1, shell height; X2, shell width; X3, shell aperture height; X4, shell aperture width; X5, body whorl height; X6, body whorl width; X7, spiral whorl height, and X8, spiral whorl width) and two qualitative traits (body mass Y1 and soft tissue mass Y2) were individually measured in samples (n=100) collected from wild population in the northern Yellow Sea, and the relationship between morphological traits and two qualitative traits by correlation analysis, multiple regression analysis and path analysis. Results showed that all measured traits were significantly correlated with each other (P<0.01), with the maximal effect of shell width on body mass, and the maximal effect of spiral layer height on soft tissue mass. Optimal regression equations were established by stepwise regression as: Y1=-51.102+0.819X5+0.792X3+0.757X2+593X8 (R2=0.786) for body mass; Y2=-50.078+0.934X5+0.544X2+0.628X3+0.621X7 (R2=0.789) for soft tissue mass. The shell width was the first choice character and the shell aperture height was strengthened when selecting broodstocks with body mass as the target, when selecting broodstocks with soft tissue mass as the target, the first selective body whorl height as the primary character and strengthen the cooperative selection of shell aperture height. In conclusion, the findings provide theoretical information and tools in artificial culture and selective breeding in whelk V.ampullacea Perryi.
韩森荣, 李春茂, 李婷婷, 孙继红, 邹雯静, 赵谭军, 湛垚垚, 常亚青. 皮氏蛾螺形态性状对体质量与软体部质量的相关性及通径分析[J]. 大连海洋大学学报, 2021, 36(6): 976-984.
HAN Senrong, LI Chunmao, LI Tingting, SUN Jihong, ZOU Wenjing, ZHAO Tanjun, ZHAN Yaoyao, CHANG Yaqing. Correlation and path analysis on relationship between morphological traits and body mass and soft tissue mass in the whelk Volutharpa ampullacea Perryi. Journal of Dalian Ocean University, 2021, 36(6): 976-984.
2021, Vol. 36 
