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

We estimated the reproductive success of adult brood fish and the heritability of growth-related traits for large yellow croaker ( Larimichthys crocea ). We created two independent full-factorial cross groups (1 and 2) by crossing 4 males×4 females and 4 males×3 females, respectively. We measured th...

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Bibliographic Details
Published in:Chinese journal of oceanology and limnology 2011-09, Vol.29 (5), p.990-995
Main Authors: Liu, Xiande, Sui, Banliang, Wang, Zhiyong, Cai, Mingyi, Yao, Cuiluan, Chen, Qingkai
Format: Article
Language:English
Subjects:
Animal reproduction
Biology
Body height
Body length
Body weight
Breeding success
Earth and Environmental Science
Earth Sciences
Females
Fish
Genetic crosses
Genetic diversity
Genetic variation
Genotype & phenotype
Hatching
Heritability
Larimichthys crocea
Males
Marine
Microsatellites
Oceanography
Offspring
Phenotypes
Physical growth
Reproduction
Selective breeding
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Summary:We estimated the reproductive success of adult brood fish and the heritability of growth-related traits for large yellow croaker ( Larimichthys crocea ). We created two independent full-factorial cross groups (1 and 2) by crossing 4 males×4 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 microsatellites. 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 N e 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.
ISSN:0254-4059
2096-5508
1993-5005
2523-3521
DOI:10.1007/s00343-011-0266-5