首页|期刊导航|中国海洋湖沼学报（英文版）|ZResponse to selection, heritability and genetic correlations between body weight and body size in Pacific white shrimp,Litopenaeus vannamei
中国海洋湖沼学报（英文版）2012，Vol.30Issue(2)：200-205,6.DOI:10.1007/s00343-012-1066-2
ZResponse to selection, heritability and genetic correlations between body weight and body size in Pacific white shrimp,Litopenaeus vannamei
ZResponse to selection, heritability and genetic correlations between body weight and body size in Pacific white shrimp,Litopenaeus vannamei
摘要
Abstract
To quantify the response to selection,heritability and genetic correlations between weight and size of Litopenaeus vannamei,the body weight (BW),total length (TL),body length (BL),first abdominal segment depth (FASD),third abdominal segment depth (TASD),first abdominal segment width (FASW),and partial carapace length (PCL) of 5-month-old parents and of offspring were measured by calculating seven body measurings of offspring produced by a nested mating design.Seventeen half-sib families and 42 full-sib families of L.vannamei were produced using artificial fertilization from 2-4 dams by each sire,and measured at around five months post-metamorphosis.The results show that heritabilities among various traits were high:0.515+0.030 for body weight and 0.394+0.030 for total length.After one generation of selection,the selection response was 10.70％ for offspring growth.In the 5th month,the realized heritability for weight was 0.296 for the offspring generation.Genetic correlations between body weight and body size were highly variable.The results indicate that external morphological parameters can be applied during breeder selection for enhancing the growth without sacrificing animals for determining the body size and breed ability; and selective breeding can be improved significantly,simultaneously with increased production.关键词
genetic correlation/growth/heritability/Litopenaeus vannamei/selection responseKey words
genetic correlation/growth/heritability/Litopenaeus vannamei/selection response引用本文复制引用
Farafidy ANDRIANTAHINA,LIU Xiaolin,HUANG Hao,XIANG Jianhai..ZResponse to selection, heritability and genetic correlations between body weight and body size in Pacific white shrimp,Litopenaeus vannamei[J].中国海洋湖沼学报（英文版）,2012,30(2):200-205,6.基金项目
Supported by National High Technology Research and Development Program of China (863 Program) (No.2006AA10A406) and the Key Laboratory of Marine Biology,Institute of Oceanology,Chinese Academy of Sciences (No.KF201002) （863 Program）
