| 大菱鲆体重和主要体型比率性状的遗传动态分析 |
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| 引用本文： | 王新安,马爱军.大菱鲆体重和主要体型比率性状的遗传动态分析[J].海洋学报(英文版),2020,39(2):22-27. |
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| 作者姓名： | 王新安 马爱军 |
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| 作者单位： | 中国水产科学研究院黄海水产研究所, 山东省海洋渔业生物技术与遗传育种重点实验室, 山东 青岛 266071;青岛海洋科学与技术国家实验室, 海洋生物学与生物技术功能实验室, 山东 青岛 266237,中国水产科学研究院黄海水产研究所, 山东省海洋渔业生物技术与遗传育种重点实验室, 山东 青岛 266071;青岛海洋科学与技术国家实验室, 海洋生物学与生物技术功能实验室, 山东 青岛 266237 |
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| 基金项目： | The Earmarked Fund for Modern Agro-Industry Technology Research System under contract No. CARS-47-G01; the AoShan Talents Cultivation Program supported by Qingdao National Laboratory for Marine Science and Technology under contract No. 2017ASTCP-OS04; the Agricultural Fine Breed Project of Shandong under contract No. 2016LZGC031; the Chinese Academy of Fishery Sciences Basal Research Fund under contract No. 2016HY-JC0302; the National Key Research and Development Program under contract No. 2018YFD0900102. |
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| 摘 要： | The objective of this study was to estimate genetic parameters of body width(BW)to body length(BL)ratio(BW/BL)and of body weight traits(BWT)in turbot,and to elucidate the genetic mechanism of the two traits during ontogeny by dynamic genetic analysis.From 3 to 27 months,BW,BL and BWT of each communally stocked fish were measured every 3 months.The BW/BL ratio was measured at different sampling ages.A twotrait animal model was used for genetic evaluation of traits.The results showed that the heritability values of BW/BL ratio ranged from 0.2168 to 0.3148,corresponding to moderate heritability.The BWT heritability values ranged from 0.2702 to 0.3479 corresponding to moderate heritability.The heritability of BW/BL ratio was lower than that of BWT,except at 3 months of age.Genetic correlation between BW/BL ratio and BWT decreased throughout the measurement period.Genetic correlations were higher than the phenotypic correlations.The current results for estimating genetic parameters demonstrate that the BW/BL ratio could be used as a phenotypic marker of fast-growing turbot,and the BW/BL ratio and BWT could be improved simultaneously through selective breeding.
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| 关 键 词： | TURBOT dynamic genetic analysis body weight main length ratio heritability genetic correlation |
| 收稿时间： | 2018/5/21 0:00:00 |
Dynamic genetic analysis for body weight and main length ratio in turbot Scophthalmus maximus |
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| Wang Xin''an and Ma Aijun.Dynamic genetic analysis for body weight and main length ratio in turbot Scophthalmus maximus[J].Acta Oceanologica Sinica,2020,39(2):22-27. |
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| Authors: | Wang Xin'an and Ma Aijun |
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| Institution: | 1.Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences/Shandong Province Key Laboratory of Marines Fisheries Biotechnology and Genetic Breeding, Qingdao 266071, China2.Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China |
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| Abstract: | The objective of this study was to estimate genetic parameters of body width (BW) to body length (BL) ratio (BW/BL) and of body weight traits (BWT) in turbot, and to elucidate the genetic mechanism of the two traits during ontogeny by dynamic genetic analysis. From 3 to 27 months, BW, BL and BWT of each communally stocked fish were measured every 3 months. The BW/BL ratio was measured at different sampling ages. A two-trait animal model was used for genetic evaluation of traits. The results showed that the heritability values of BW/BL ratio ranged from 0.216 8 to 0.314 8, corresponding to moderate heritability. The BWT heritability values ranged from 0.270 2 to 0.347 9 corresponding to moderate heritability. The heritability of BW/BL ratio was lower than that of BWT, except at 3 months of age. Genetic correlation between BW/BL ratio and BWT decreased throughout the measurement period. Genetic correlations were higher than the phenotypic correlations. The current results for estimating genetic parameters demonstrate that the BW/BL ratio could be used as a phenotypic marker of fast-growing turbot, and the BW/BL ratio and BWT could be improved simultaneously through selective breeding. |
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| Keywords: | turbot dynamic genetic analysis body weight main length ratio heritability genetic correlation |
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