Estimated genetic parameters for growth-related traits in large yellow croaker <i>Larimichthys crocea</i> using microsatellites to assign parentage

Authors: Liu, X. D.; Zhao, G. T.; Cai, M. Y.; Wang, Z. Y.

Source: Journal of Fish Biology, Volume 82, Number 1, 1 January 2013 , pp. 34-41(8)

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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 (L_S) and body height (H_B). 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 H_B. These results showed that the heritabilities of M, L_S and H_B were different among three sets, which suggested that different breeding strategies should be adopted for different sets.

Document Type: Regular paper

DOI: http://dx.doi.org/10.1111/j.1095-8649.2012.03472.x

Publication date: 2013-01-01