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

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

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Mass selection for fast growth was conducted in three Pacific oyster(Crassostrea gigas)stocks from China,Japan and Korea using previously established lines(CS1,JS 1,and KS 1).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.

Pacific oysterCrassostrea gigasmass selectionsecond generationgenetic gainrealized heritability

WANG Qingzhi、LI Qi、KONG Lingfeng、YU Ruihai

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1)Liaoning Ocean and Fishery Science Research Institute,Dalian 116023,P.R.China

Key Laboratory of Mariculture,Ministry of Education,Ocean University of China,Qingdao 266003,P.R.China

This work was supported by the National High Technology Research and Development Program国家重点基础研究发展规划(973计划)We are grateful to Jiqing Li (Wendeng Mollusk Hatchery,Weihai,Shandong)for experimental assistance

2006AA 10A4092010CB126406

2012

10.1007/sl1802-012-1909-7

中国海洋大学学报(自然科学英文版)
中国海洋大学

中国海洋大学学报(自然科学英文版)

CSTPCDSCI
影响因子：0.268
ISSN：1672-5182
年,卷(期)：2012.11(3)
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