Genetic parameter estimates for growth traits at early stage of Pacific abalone,Haliotis discus hannai Ino

作     者：DENG Yuewen LIU Xiao ZHANG Guofan ZHAO Hongen 

作者机构：Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China Fisheries College Guangdong Ocean University Zhanjiang 524025 China Dalian Institute of Fisheries Dalian 116013 China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2007年第26卷第5期

页      面：90-95页

核心收录：

学科分类：070703[理学-海洋生物学] 07[理学] 0707[理学-海洋科学] 

基　　金：The study was supported by the National High Technology Development Project of China under contract No.2006AA10A407 the National Natural Science Foundation of China under contract No.30371117 

主　　题：Haliotis discus hannai Ino growth traits heritability genetic correlations 

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.