| 大菱鲆体重和形态性状的遗传动态分析 |
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| 引用本文： | 王新安,马爱军,马得友.大菱鲆体重和形态性状的遗传动态分析[J].海洋学报(英文版),2015,34(2):55-62. |
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| 作者姓名： | 王新安 马爱军 马得友 |
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| 作者单位： | 中国水产科学研究院黄海水产研究所"农业部海洋渔业可持续发展重点实验室, 青岛市海水鱼类种子工程与生物技术重点实验室, 山东 青岛 266071,中国水产科学研究院黄海水产研究所"农业部海洋渔业可持续发展重点实验室, 青岛市海水鱼类种子工程与生物技术重点实验室, 山东 青岛 266071,中国水产科学研究院黄海水产研究所"农业部海洋渔业可持续发展重点实验室, 青岛市海水鱼类种子工程与生物技术重点实验室, 山东 青岛 266071 |
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| 基金项目： | The Earmarked Fund for Modern Agro-Industry Technology Research System under contract No. CARS-50- G01. |
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| 摘 要： | In order to elucidate the genetic mechanism of growth traits in turbot during ontogeny, developmental genetic analysis of the body weights, total lengths, standard lengths and body heights of turbots was conducted by mixed genetic models with additive-dominance effects, based on complete diallel crosses with four different strains of Scophthalmus maximus from Denmark, Norway, Britain, and France. Unconditional genetic analysis revealed that the unconditional additive effects for the four traits were more significant than unconditional dominance effects, meanwhile, the alternative expressions were also observed between the additive and dominant effects for body weights, total lengths and standard lengths. Conditional analysis showed that the developmental periods with active gene expression for body weights, total lengths, standard lengths and body heights were 15–18, 15 and 21–24, 15 and 24, and 21 and 27 months of age, respectively. The proportions of unconditional/conditional variances indicated that the narrow-sense heritabilities of body weights, total lengths and standard lengths were all increased systematically. The accumulative effects of genes controlling the four quantitative traits were mainly additive effects, suggesting that the selection is more efficient for the genetic improvement of turbots. The conditional genetic procedure is a useful tool to understand the expression of genes controlling developmental quantitative traits at a specific developmental period(t-1→t) during ontogeny. It is also important to determine the appropriate developmental period(t-1→t) for trait measurement in developmental quantitative genetic analysis in fish.
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| 关 键 词： | 大菱鲆 生长 发育遗传 遗传效应 |
| 收稿时间： | 2013/10/3 0:00:00 |
| 修稿时间： | 2014/5/15 0:00:00 |
Developmental quantitative genetic analysis of body weights and morphological traits in the turbot, Scophthalmus maximus |
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| WANG Xin''an,MA Aijun and MA Deyou.Developmental quantitative genetic analysis of body weights and morphological traits in the turbot, Scophthalmus maximus[J].Acta Oceanologica Sinica,2015,34(2):55-62. |
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| Authors: | WANG Xin'an MA Aijun and MA Deyou |
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| Institution: | Yellow Sea Fisheries Research Institute, Chinese Academy of Fisheries Sciences / Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture / Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao 266071, China |
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| Abstract: | In order to elucidate the genetic mechanism of growth traits in turbot during ontogeny, developmental genetic analysis of the body weights, total lengths, standard lengths and body heights of turbots was conducted by mixed genetic models with additive-dominance effects, based on complete diallel crosses with four different strains of Scophthalmus maximus from Denmark, Norway, Britain, and France. Unconditional genetic analysis revealed that the unconditional additive effects for the four traits were more significant than unconditional dominance effects, meanwhile, the alternative expressions were also observed between the additive and dominant effects for body weights, total lengths and standard lengths. Conditional analysis showed that the developmental periods with active gene expression for body weights, total lengths, standard lengths and body heights were 15-18, 15 and 21-24, 15 and 24, and 21 and 27 months of age, respectively. The proportions of unconditional/conditional variances indicated that the narrow-sense heritabilities of body weights, total lengths and standard lengths were all increased systematically. The accumulative effects of genes controlling the four quantitative traits were mainly additive effects, suggesting that the selection is more efficient for the genetic improvement of turbots. The conditional genetic procedure is a useful tool to understand the expression of genes controlling developmental quantitative traits at a specific developmental period (t-1→t) during ontogeny. It is also important to determine the appropriate developmental period (t-1→t) for trait measurement in developmental quantitative genetic analysis in fish. |
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| Keywords: | Turbot (Scophthalmus maximus L ) growth developmental genetics genetic effect |
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