| 凡纳滨对虾收获体质量大规模家系选择效果的计算机模拟分析 |
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| 引用本文： | 栾生,仲伟鹏,谭建,罗坤,陈宝龙,孔杰.凡纳滨对虾收获体质量大规模家系选择效果的计算机模拟分析[J].水产学报,2018,42(10):1582-1588. |
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| 作者姓名： | 栾生 仲伟鹏 谭建 罗坤 陈宝龙 孔杰 |
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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资源可持续利用重点开放实验室;青岛海洋科学与技术国家实验室海洋渔业科学与食物产出过程功能实验室;上海海洋大学水产与生命学院 |
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| 基金项目： | “一带一路”沿线热带国家水产养殖科技创新合作项目；农业部“九四八”滚动项目（2016-X39）；中国水产科学研究院基本业务费重点项目（2016HY-ZD04）；国家自然科学基金（31572616）；泰山学者种业人才团队项目 |
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| 摘 要： | 为进一步补充凡纳滨对虾核心育种群收获体质量的遗传进展工作,设计了包括10个家系数量梯度(100~1 000)和11个家系内测试个体数梯度(100~5 000)的育种方案,利用计算机模拟技术,执行家系间(留种50%家系)和家系内选择(留种1雄、2雌),连续选择19次,比较核心育种群与扩繁群收获体质量育种值和群体近交系数的变化,为进一步优化大规模家系选育提供基础参数。结果显示,与对照方案(家系数量100个、家系内测试个体数100个、体质量遗传力0.35)相比,增加参与测试的家系内个体数,选择强度不断提高,核心育种群收获体质量育种值均值增加了48%(62.75~92.87 g),但增加幅度在不断降低(100~2 500:40.60%;2 500~5 000:7.40%);核心育种群收获体质量育种值标准差降低了2.90%(1.38~1.34 g)。受限于选择强度,随着家系数量的扩大,核心育种群收获体质量育种值仅增加了1.88%(62.75~63.93 g),育种值标准差增加了4.35%。扩繁群收获体质量育种值随家系规模变化的趋势同核心育种群,但在家系水平上的提高幅度更大(63.63~65.48 g,2.91%)。随着家系数量的增加,核心育种群的近交系数降低了90.32%(0.093~0.009),下降幅度不断减少(100~500:79.57%;500~1 000:10.75%);家系数量为200个的育种群体,连续选择19次后,每代平均近交率为0.25%。增加参与测试的家系内个体数,不影响核心育种群的近交水平。研究表明,扩大家系内测试个体数,可以进一步提高核心育种群与扩繁群收获体质量的遗传进展。
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| 关 键 词： | 凡纳滨对虾 家系内选择 家系间选择 育种值 近交系数 |
| 收稿时间： | 2017/11/20 0:00:00 |
| 修稿时间： | 2018/1/31 0:00:00 |
Effect of large-scale family selection on body weight of Litopenaeus vannamei by computer simulation |
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| LUAN Sheng,ZHONG Weipeng,TAN Jian,LUO Kun,CHEN Baolong and KONG Jie.Effect of large-scale family selection on body weight of Litopenaeus vannamei by computer simulation[J].Journal of Fisheries of China,2018,42(10):1582-1588. |
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| Authors: | LUAN Sheng ZHONG Weipeng TAN Jian LUO Kun CHEN Baolong and KONG Jie |
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| Institution: | Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266300, China,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China,Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266300, China,Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266300, China,Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266300, China and Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266300, China |
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| Abstract: | |
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| Keywords: | Litopenaeus vannamei within-family selection between-family selection breeding value inbreeding coefficient |
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