| Genetic parameter estimates for growth traits at early stage of Pacific abalone,Haliotis discus hannai Ino |
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| 作者姓名： | DENG Yuewen LIU Xiao ZHANG Guofan ZHAO Hongen |
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| 作者单位： | DENG Yuewen1，2，LIU Xiao1，ZHANG Guofan1，ZHAO Hongen31.Institute of Oceanology，Chinese Academy of Sciences，Qingdao 266071，China 2.Fisheries College，Guangdong Ocean University，Zhanjiang 524025，China 3.Dalian Institute of Fisheries，Dalian 116013，China |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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国家自然科学基金 |
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| 摘 要： | Heritability and genetic and phenotypic correlations were estimated for juvenile growth traits of Pacific abalone Haliotis discus hannai Ino.The estimates were calculated from shell length and shell width measurements on progeny resulting from 12 half-sib families and 36 full-sib families obtained using artificial fertilization of mating three females to each male.The measurements were taken at 10,20 and 30 d after fertilization.It was found that heritability estimates based on sire component ranged from 0.23 to 0.36 for shell length and 0.21 to 0.32 for shell width.Heritability estimates from dam component were larger than those from sire component at three ages,indicating presence of maternal effects,non-additive genetic effects and common environmental effects.Phenotypic correlations were significant at three ages(P < 0.05),with values of 0.92,0.93 and 0.92,respectively.Genetic correlations from the paternal half-sib correlation analysis were highly positive at three ages,with values of 0.50,0.78 and 0.81,respectively.The results suggest that selective breeding is an effective approach to improving growth traits of Pacific abalone stocks.
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| 关 键 词： | 鲍鱼 遗传相关因素 海岸生物 生长性能 |
| 收稿时间： | 2006/7/22 0:00:00 |
| 修稿时间： | 2006-07-22 |
Genetic parameter estimates for growth traits at early stage of Pacific abalone,Haliotis discus hannai Ino |
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| DENG Yuewen,LIU Xiao,ZHANG Guofan,ZHAO Hongen.Genetic parameter estimates for growth traits at early stage of Pacific abalone,Haliotis discus hannai Ino[J].Acta Oceanologica Sinica,2007,26(5):90-95. |
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| Authors: | DENG Yuewen LIU Xiao ZHANG Guofan and ZHAO Hongen |
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| Institution: | 1.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Fisheries College, Guangdong Ocean University, Zhanjiang 524025, China2.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China3.Dalian Institute of Fisheries, Dalian 116013, China |
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| Abstract: | Heritability and genetic and phenotypic correlations were estimated for juvenile growth traits of Pacific abalone Haliotis discus hannai Ino.The estimates were calculated from shell length and shell width measurements on progeny resulting from 12 half-sib families and 36 full-sib families obtained using artificial fertilization of mating three females to each male.The measurements were taken at 10,20 and 30 d after fertilization.It was found that heritability estimates based on sire component ranged from 0.23 to 0.36 for shell length and 0.21 to 0.32 for shell width.Heritability estimates from dam component were larger than those from sire component at three ages,indicating presence of maternal effects,non-additive genetic effects and common environmental effects.Phenotypic correlations were significant at three ages(P < 0.05),with values of 0.92,0.93 and 0.92,respectively.Genetic correlations from the paternal half-sib correlation analysis were highly positive at three ages,with values of 0.50,0.78 and 0.81,respectively.The results suggest that selective breeding is an effective approach to improving growth traits of Pacific abalone stocks. |
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| Keywords: | Haliotis discus hannai Ino growth traits heritability genetic correlations |
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