文献类型： 外文期刊

第一作者： Li Qi

作者： Li Qi;Kong Lingfeng;Yu Ruihai;Wang Qingzhi

作者机构：

关键词： Pacific oyster; Crassostrea gigas; mass selection; second generation; genetic gain; realized heritability

期刊名称：JOURNAL OF OCEAN UNIVERSITY OF CHINA （ 影响因子：1.179； 五年影响因子：1.225 ）

ISSN： 1672-5182

年卷期： 2012 年 11 卷 3 期

页码：

收录情况： SCI

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.

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