Estimated reproductive success of brooders and heritability of growth traits for large yellow croaker (Larimichthys crocea) using microsatellites

作     者：刘贤德 隋班良 王志勇 蔡明夷 姚翠鸾 陈庆凯 

作者机构：Key Laboratory of Healthy Mariculture for East China Sea Ministry of Agriculture of China Fisheries College Jimei University Fishery Technical Extension Station of Ningde City 

出 版 物：《Chinese Journal of Oceanology and Limnology》 (中国海洋湖沼学报（英文版）)

年 卷 期：2011年第29卷第5期

页      面：990-995页

核心收录：

学科分类：090801[农学-水产养殖] 0908[农学-水产] 09[农学] 

基　　金：Supported by the Special Fund for Agro-Scientific Research in the Public Interest (No. 200903029-4) Key Project of Science and Technology Department of Fujian Province (No. 2010N0021) the Foundation for Young Professors of Jimei University (No. 2009C002) 

主　　题：Larimichthys crocea growth trait heritability genetic correlation microsatellite 

摘      要：We estimated the reproductive success of adult brood fish and the heritability of growthrelated traits for large yellow croaker （Larimichthys crocea）. We created two independent full-factorial cross groups （1 and 2） by crossing 4 malesx4 females and 4 males^3 females, respectively. We measured the body weight （BW）, body length （BL）, and body height （BH） of 281 individuals from group 1 and 318 individuals from group 2 at 20 months post hatch （harvest age）. We also collected a tissue sample from each individual. The parents and offspring were genotyped using six polymorphic mierosatellites. Of the 599 offspring, 99.2% were assigned to a single pair of parents. In both groups, some parent pairs produced a large number of offsprings while other pairs did not produce any offspring. The genetic diversity and putative No were lower in the offsprings than in the parents in both groups. The heritability estimates at 20-month age were 0.13±0.10 for BW, 0.19±0.13 for BL, and 0.09±0.06 for BH. The genetic and phenotype correlation between BW, BL, and BH was close to 1. The results provide basic information for selective breeding and further genetic characterization of large yellow croaker.