Comparisons of Growth and Survival Performance Among Selected Families and Wild Populations of Fenneropenaeus chinensis

Luo, Kun; Kong, Jie; Meng, Xianhong; Luan, Sheng; Cao, Baoxiang; Chen, Baolong

doi:10.1007/s11802-018-3429-6

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“…Strict mating of male and female parents were controlled according to high selection index based on estimated breeding values and inbreeding coefficient (< 1%). Previous studies have shown that the body weight had significantly increased by 34.31% compared with wild population 17 and the realized genetic gain was 3.72% per generation. The estimates of heritability in different traits were low to moderate in magnitude (0.00–0.36) in different assessment 4 .…”

Section: Discussionmentioning

confidence: 94%

“…Until just recently, the whole genome of Litopenaeus vannamei was published and provided the first glimpse into penaeid genome 16 . In F. chinensis , we have made many efforts in its genetic studies focusing on growth 4 , 17 , immunity 18 , 19 , effects of inbreeding 20 and feed efficiency 21 . Remarkable progress have also been achieved by transcriptome sequencing for identification of disease-resistant genes and polymorphisms in these genes 22 , 23 .…”

Section: Introductionmentioning

confidence: 99%

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Genome survey and high-resolution genetic map provide valuable genetic resources for Fenneropenaeus chinensis

Meng

Luan

et al. 2021

Sci Rep

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Fenneropenaeus chinensis is one of the most important aquaculture species in China. Research on its genomic and genetic structure not only helps us comprehend the genetic basis of complex economic traits, but also offers theoretical guidance in selective breeding. In the present study, a genome survey sequencing was performed to generate a rough reference genome utilized for groping preliminary genome characteristics and facilitate linkage and quantitative trait locus (QTL) mapping. Linkage mapping was conducted using a reduced-representation sequencing method 2b-RAD. In total, 36,762 SNPs were genotyped from 273 progenies in a mapping family, and a high-resolution linkage map was constructed. The consensus map contained 12,884 markers and spanned 5257.81 cM with an average marker interval of 0.41 cM, which was the first high-resolution genetic map in F. chinensis to our knowledge. QTL mapping and association analysis were carried out in 29 characters including body size, sex and disease resistance. 87 significant QTLs were detected in several traits and they were also evaluated by association analysis. Results of this study provide us valuable suggestions in genetic improvement and breeding of new varieties and also lay a basic foundation for further application of cloning of economic genes in selective breeding program and marker-assisted selection.

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Section: Discussionmentioning

confidence: 94%