Wang Xin-An, Ma Ai-Jun
Shandong Key Laboratory of Marine Fisheries Biotechnology and Genetic Breeding, Qingdao Key Laboratory for Marine Fish Breeding and Biotechnology, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.
Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
J Fish Dis. 2019 May;42(5):713-720. doi: 10.1111/jfd.12973. Epub 2019 Mar 8.
Genetic parameters for resistance to Vibrio anguillarum in Scophthalmus maximus were estimated using three different statistical models. Data were recorded from an experimental infection performed on 2,400 individuals from 30 full-sib groups. Cross-sectional linear model and cross-sectional threshold probit model were used to analyse the test-period survival; the cross-sectional threshold logit models were used to analyse the test-day survival. The heritability values estimated by cross-sectional linear model (CSL), cross-sectional threshold (probit) model (THRp) and cross-sectional threshold (logit) model (THRl) were 0.202 ± 0.101, 0.296 ± 0.168 and 0.110 ± 0.023, respectively. The correlation coefficients between the full-sib families' estimated breeding values (EBVs) based on these three models were over 0.993. An almost identical ranking of families was generated using any of these models. Accuracy of selection using CSL, THRp and THRl models was 0.783, 0.789 and 0.801, respectively. Accuracy of selection based on the THRl model was higher than that based on CSL and THRp models.
利用三种不同的统计模型估计了大菱鲆对鳗弧菌抗性的遗传参数。数据记录自对来自30个全同胞家系的2400个个体进行的实验性感染。采用横断面线性模型和横断面阈值概率单位模型分析试验期存活率；采用横断面阈值对数单位模型分析试验日存活率。通过横断面线性模型（CSL）、横断面阈值（概率单位）模型（THRp）和横断面阈值（对数单位）模型（THRl）估计的遗传力值分别为0.202±0.101、0.296±0.168和0.110±0.023。基于这三种模型的全同胞家系估计育种值（EBV）之间的相关系数超过0.993。使用这些模型中的任何一种都能产生几乎相同的家系排名。使用CSL、THRp和THRl模型的选择准确性分别为0.783、0.789和0.801。基于THRl模型的选择准确性高于基于CSL和THRp模型的选择准确性。
