中国水产科学2017，Vol.24Issue(4)：710-717,8.DOI:10.3724/SP.J.1118.2017.16305
日本囊对虾早期生长性状遗传参数估计
Genetic parameter estimation of growth traits for early growth stage of Marsupenaeus japonicus
摘要
Abstract
Linear Mixed Effects Model and Restricted Maximum Likelihood (REML) were applied to estimate the genetic parameters for growth traits based on sixty-eight full-sib families of the Kuruma shrimp Penaeus Marsu-penaeus japonicus. The results indicated that the heritability estimates of body length (BL), abdorminal segment length (ASL), and body weight (BW) were 0.1545±0.0505, 0.1672±0.0473, and 0.1934±0.0439, respectively, on day 45. On day 75, the heritability estimates were 0.1933±0.0475 for body length, 0.1937±0.0468 for abdorminal segment length, and 0.1992±0.037 for body weight, all of which were found to be at moderate levels. Strong posi-tive phenotypic and genetic correlations between growth-related traits at different stages were detected. The phe-notypic correlations between BL and ASL, BL and BW, and ASL and BW on day 45 were 0.7121±0.0188, 0.5147± 0.0277, and 0.5052±0.0280, respectively, while the genetic correlations were 0.9896± 0.0034, 0.9304±0.0321, and 0.9429±0.0301, respectively. The phenotypic correlations between BL and ASL, BL and BW, and ASL and BW on day 75 were 0.6710±0.0236, 0.6555±0.0181, and 0.6534±0.0160, respectively, while the genetic correlations were 0.7637±0.0161, 0.7479±0.0148, and 0.7177±0.0131, respectively. Selection for growth traits in M. japonicus was found to be effective in the present study, and selection for one growth trait can improve other growth traits si-multaneously in a breeding program. The results of this study provided reference data for early selective breeding and multi-trait selection of M. japonicus.关键词
日本囊对虾/生长性状/遗传力/遗传相关/表型相关Key words
Marsupenaeus japonicus/growth trait/heritability/genetic correlations/phenotypic correlations分类
农业科技引用本文复制引用
郑静静,刘建勇,蒋湘,谢妙,曹伏君..日本囊对虾早期生长性状遗传参数估计[J].中国水产科学,2017,24(4):710-717,8.基金项目
广东省技术开发及产业化项目(日本囊对虾种质资源评价及群体选育技术研究,zj0004) （日本囊对虾种质资源评价及群体选育技术研究,zj0004）
广东省海洋与渔业局良种体系专项项目[(2014301)]. （2014301）
