引用本文:	栾生,罗坤,阮晓红,曹宝祥,王浩,杜学芳,张凯,孔杰.凡纳滨对虾(Litopenaeus vannamei)体重、存活性状的遗传参数和基因型与环境互作效应.海洋与湖沼,2013,44(2):445-452.

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*凡纳滨对虾(Litopenaeus vannamei)体重、存活性状的遗传参数和基因型与环境互作效应*
栾生,罗坤,阮晓红,曹宝祥,王浩,杜学芳,张凯,孔杰
1.农业部海洋渔业可持续发展重点实验室中国水产科学研究院黄海水产研究所;2.大连海洋大学水产与生命学院;3.上海海洋大学水产与生命学院;4.中国海洋大学海洋生命学院

摘要:

利用7个凡纳滨对虾(Litopenaeus vannamei)引进群体, 通过双列杂交和巢式交配设计构建家系, 建立育种基础群体, 估计体重、存活性状的遗传参数和基因型与环境互作效应(genotype by environment interactions, G×E)。结果表明, 凡纳滨对虾基础群体体重和存活性状的遗传力估计值范围分别在(0.19±0.09)—(0.43±0.09), (0.27±0.04)—(0.45±0.06), 均属于中高遗传力水平, 并且统计检验显著(P<0.05)。Z-score检验表明, 体重和存活性状遗传力估计值在河北黄骅(HBHH)和青岛鳌山(QBAS)两个测试场间差异均不显著。体重和存活性状的表型和遗传相关系数分别为?0.007和?0.008, 表现为低度线性负相关。对于体重和存活性状, HBHH 和QBAS场间的遗传相关分别为0.83±0.04和0.40±0.11。体重性状的G×E效应不显著(K<0.5), 但存活性状存在显著的G×E效应(K>0.5)。上述结果显示, 凡纳滨对虾基础群体体重和存活性状的遗传变异丰富, 多代选择可获得较大的遗传进展。

关键词: 凡纳滨对虾体重存活遗传力遗传相关基因型与环境互作

DOI：10.11693/hyhz201302029029

分类号:

基金项目:国家高技术研究发展计划项目(2012AA10A404); 农业部“引进国际先进农业科学技术”项目(2013-Z13); 公益性行业(农业)科研专项(200903045)。

附件

GENETIC PARAMETERS AND GENOTYPE BY ENVIRONMENT INTERACTION FOR BODY WEIGHT AND SURVIVAL OF PACIFIC WHITE SHRIMP LITOPENAEUS VANNAMEI

LUAN Sheng^1,2, LUO Kun^1,2, RUAN Xiao-Hong^1,2, CAO Bao-Xiang^1,2, WANG Hao^1,2,3, DU Xue-Fang^1,2,4, ZHANG Kai^1,2,5, KONG Jie^1,2

1.Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences;2.Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture;3.College of Fisheries and Life Science, Dalian Ocean University;4.College of Fisheries and Life Science, Shanghai Ocean University;5.College of Marine Life Science, Ocean University of China

Abstract:

Genetic parameters and genotype by environment interaction (G×E) were obtained for body weight and survival of Pacific white shrimp Litopenaeus vannamei using full-sib and half-sib families from cultured brood females collected from seven introduced populations. The heritability estimates for body weight and survival in the base population all ranged from moderate to high [(0.19±0.09) to (0.43±0.09), (0.27±0.04) to (0.45±0.06)] and were significantly different from zero (P<0.05). The heritabilities estimated between two farm units (HBHH and QDAS) at different locations (Huanghua city and Qingdao city) were not significantly different from each other (P>0.05) for body weight and survival using Z-score test. There was a low phenotypic and genetic correlation between body weight and survival (?0.007 and ?0.008).The genetic correlations between HBHH and QDAS farms were 0.83±0.04 for body weight, and 0.40±0.11 for survival. These correlations suggest that a low G×E effect for body weight (K<0.5), but a high G×E effect for survival (K>0.5). The results show that there is quite substantial additive genetic variance for body weight and survival in Pacific white shrimp that can be exploited through selective breeding.

Key words: Litopenaeus vannamei body weight survival heritability genetic correlations genotype by environment interaction