Response to Selection for Fast Growth in the Second Generation of Pacific Oyster (Crassostrea gigas)

作     者：WANG Qingzhi LI Qi KONG Lingfeng YU Ruihai WANG Qingzhi;LI Qi;KONG Lingfeng;YU Ruihai

作者机构：Liaoning Ocean and Fishery Science Research InstituteDalian 116023P.R.China Key Laboratory of MaricultureMinistry of EducationOcean University of ChinaQingdao 266003P.R.China 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2012年第11卷第3期

页      面：413-418页

核心收录：

学科分类：090801[农学-水产养殖] 0908[农学-水产] 08[工学] 080401[工学-精密仪器及机械] 09[农学] 0804[工学-仪器科学与技术] 081102[工学-检测技术与自动化装置] 0811[工学-控制科学与工程] 

基　　金：supported by the National High Technology Research and Development Program (2006AA10A409) the National Basic Research Program of China (2010CB126406) 

主　　题：Pacific oyster Crassostrea gigas mass selection second generation genetic gain realized heritability 

摘      要：Mass selection for fast growth was conducted in three Pacific oyster (Crassostrea gigas) stocks from China, Japan and Korea using previously established lines (CS1, JS1, and KS1). To determine whether continuous progress can be achieved by selection for growth, the progeny of three second-generation Pacific oyster lines was selected for shell height and evaluated via a 400-day farming experiment. When harvested at the end of the experiment, the selected crosses of CS2, JS2, and KS2 lines grew by 9.2%, 10.2% and 9.6% larger than the control crosses, respectively. During grow-out stage, the genetic gain of three selected lines was (10.2 ± 1.4)%, (10.4 ± 0.3)%, and (8.4 ± 1.6)%, respectively; and the corresponding realized heritability was 0.457 ± 0.143, 0.312 ± 0.071 and 0.332 ± 0.009, respectively. These results indicated that the selection for fast growth achieved steady progress in the second generation of oyster. Our work provides supportive evidence for the continuity of the Pacific oyster selective breeding program.