학술논문
Estimated genetic parameters for growth-related traits in large yellow croaker Larimichthys crocea using microsatellites to assign parentage.
Document Type
Article
Author
Source
Subject
*SCIAENIDAE
*PARAMETER estimation
*FISH growth
*MICROSATELLITE repeats
*FISH genetics
*HERITABILITY
*BODY mass index
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Language
ISSN
0022-1112
Abstract
To estimate the heritabilities of growth-related traits in large yellow croaker, Larimichthys crocea, three independent full-factorial crosses were created by crossing four males × four females, seven males × three females and four males × three females (set 1, set 2 and set 3). At 13 months post-hatch, the juveniles were collected from three cross sets and measured for body mass ( M), standard length ( LS) and body height ( HB). In addition, the parentage of the juveniles was assigned by genotyping six or seven polymorphic microsatellite loci. Out of the 959 juveniles, 99·6% could be assigned to a single parental pair. Heritabilities of growth-related traits were estimated for individual and combined sets with the pedigrees reconstructed by using microsatellite genotypes. The heritability estimates at 13 month-old were 0·02-0·30 for M, 0·02-0·25 for L S and 0·03-0·36 for HB. These results showed that the heritabilities of M, L S and HB were different among three sets, which suggested that different breeding strategies should be adopted for different sets. [ABSTRACT FROM AUTHOR]