Phenotypic and genetic parameter estimation of juvenile growth and bottom color traits in half-smooth tongue sole, Cynoglossus semilaevis
文献类型： 外文期刊
作者： Liu Feng 1 ; Yang Yingming 1 ; Li Yangzhen 1 ; Guo Hua 1 ; Dai Huan 1 ; Gao Jin 1 ; Zhang Yongzhen 1 ; Ma Jialu 1 ; Liu Yang 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Sustainable Dev Marine Fisheries, Minist Agr, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao 266237, Peoples R China
3.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai 201306, Peoples R China
4.Zhejiang Ocean Univ, Marine & Fishery Res Inst, Zhoushan 316021, Peoples R China
关键词： half-smooth tongue sole; Cynoglossus semilaevis; growth trait; bottom color; genetic parameter; family selection
期刊名称：ACTA OCEANOLOGICA SINICA （ 影响因子：1.431； 五年影响因子：1.445 ）
ISSN： 0253-505X
年卷期： 2016 年 35 卷 10 期
页码：
收录情况： SCI
摘要： Half-smooth tongue sole (Cynoglossus semilaevis) is a commercially important fish species. There were no reports about accurate genetic parameters of growth traits in C. semilaevis, despite efforts aimed at the culture of this species. Therefore, the main goal of this study was to estimate the parameters for the early growth traits (total length, body depth and body weight) of C. semilaevis based on the data obtained from 80 families. The trait of fish with pure white bottom or not (named as the trait of bottom color) was also analyzed. All the heritabilities estimated for the traits were medium, which varied from 0.210 to 0.362. Genetic correlations among growth traits were highly positive, varying from 0.913 to 0.959, indicating that selection of one of the three traits would result in correlated increase in the others. Also, genetic correlations between bottom color and growth traits were positive and varying from 0.241 to 0.353, suggesting that selection for the bottom color can be utilized to enhance the selection of growth traits. In addition, fish from the top performing 16 full-sib families were selected as broodstock, based on the above analysis and the comparison of family breeding value. This research provides an important basic material to implement selective breeding in C. semilaevis.
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