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MA Aijun,WANG Xin'an,HUANG Zhihui,LIU Zhifeng,CUI Wenxiao,QU Jiangbo. 2018. Estimation of genetic parameters for upper thermal tolerance and growth-related traits in turbot Scophthalmus maximus using the Bayesian method based on Gibbs sampling. Acta Oceanologica Sinica, 37(6):40－46

Estimation of genetic parameters for upper thermal tolerance and growth-related traits in turbot Scophthalmus maximus using the Bayesian method based on Gibbs sampling

基于Gibbs抽样的贝叶斯方法估计大菱鲆生长和耐高温性状的遗传参数

Received:August 09, 2017 Revised:December 12, 2017

DOI：10.1007/s13131-018-1185-5

Key words:heritability genetic correlation thermotolerance body weight Turbot Bayesian inference

中文关键词: 遗传力遗传相关耐高温体重大菱鲆贝叶斯推断

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 Key Research and Development Plan of Shandong under contract No. 2016GSF115019; the Agricultural Fine Breed Project of Shandong under contract No. 2016LZGC031; Chinese Acdemy of Fishery Sciences Basal Research Fund under contract No. 2016HY-JC0301; the Special Financial Grant from the China Postdoctoral Science Foundation under contract No. 2016T90661.

Author Name	Affiliation	E-mail
MA Aijun	Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao 266071, China Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China	maaj@ysfri.ac.cn
WANG Xin'an	Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao 266071, China Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
HUANG Zhihui	Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao 266071, China Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
LIU Zhifeng	Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao 266071, China Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
CUI Wenxiao	Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Qingdao 266071, China Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
QU Jiangbo	Yantai Tianyuan Aquatic Limited Corporation, Yantai 264003, China

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Abstract:

In order to carry out the genetic improvement of turbot upper thermal tolerance, it is necessary to estimate the genetic parameters of UTT (upper thermal tolerance) and growth-related traits. The objective of this study was to estimate genetic parameters for BW (body weight) and UTT in a two-generational turbot (Scophthalmus maximus L.) pedigree derived from four imported turbot stocks (England, France, Denmark and Norway). A total of 42 families including 20 families from G₁ generation and 22 families from G₂ generation were used to test upper thermal tolerance (40-50 animals per family) in this study and the body weight of individuals were measured. The heritability of BW and UTT and the correlation between these two traits were estimated based on an individual animal model using Bayesian method based on two types of animal models with and without maternal effects. These results showed that the heritabilities for BW and UTT and phenotypic and genetic correlations between the two traits estimated from model without maternal effects were 0.239±0.141, 0.111±0.080, 0.075±0.026 and -0.019±0.011, respectively. The corresponding values from model with maternal effects were 0.203±0.115, 0.055±0.026, 0.047±0.034 and -0.024±0.028, respectively. The maternal effects of BW and UTT were 0.050±0.017 and 0.013±0.004, respectively. The maternal effects had a certain influence on the genetic evaluation of the two traits. The findings of this paper provided the necessary background to determine the best selection strategy to be adopted in the genetic improvement program.

中文摘要:

为了开展大菱鲆耐高温选育工作，对其进行耐高温性状及其相关生长性状的遗传评估是非常必要的。以来源于英国、法国、丹麦和挪威4个国家的不同群体构建大菱鲆选育家系，利用F₁的20个和F₂的22个耐高温选育家系进行耐高温实验，统计耐高温评估指标（UTT）和相应的实验鱼体重（每个家系选取40-50尾实验鱼）。基于Gibbs抽样的贝叶斯方法，采用包含母性效应和不包含母性效应的两种动物模型，对大菱鲆耐高温（UTT）和生长性状的遗传力以及这两个性状间的遗传相关和表型相关进行分析。结果表明，基于不包含母性效应的动物模型估计的体重和耐高温性状的遗传力以及这两个性状之间的表型相关和遗传相关分别为0.239±0.141,0.111±0.080,0.075±0.026和-0.019±0.011。基于包含母性效应的动物模型估计的这4个值分别为0.203±0.115,0.055±0.026,0.047±0.034和-0.024±0.028,体重和耐高温性状的母性效应分别为0.050±0.017和0.013±0.004。母性效应对这两个性状的遗传评估有一定的影响。本文的研究结论为制订合理的大菱鲆耐高温育种规划提供了理论依据。

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