ArticleMarine biotechnology (New York, N.Y.)2023
Sex-Associated SNP Confirmation of Sex-Reversed Male Farmed Japanese Flounder Paralichthys olivaceus.
Article in Marine biotechnology (New York, N.Y.), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Genome resequencing reveals an XX/XY sex determination system and male-specific markers iniScience · 2026Article
- Synchronously Mature Intersex Japanese Flounder (Animals : an open access journal from MDPI · 2024Article
- FishSNP: a high quality cross-species SNP database of fishes.Scientific data · 2024Article
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Authors and funding
8 authors.
Funding
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Abstract
Female Japanese flounder Paralichthys olivaceus grow more rapidly than the male. The goal of all-female commercial production requires an efficient method of genetic sex identification. We conducted genome-wide association analysis of female and male farmed Japanese flounder (n = 24 per phenotypic sex) and found all regions of chromosome 24 to be significantly associated with phenotypic sex, suggesting it as the sex chromosome. Genetic sex was identified based on single nucleotide polymorphisms (SNP) on chromosome 24 (n = 3568) using multidimensional scaling analysis, and individuals were clearly separated according to sex by the first dimension. The 61 SNPs most highly associated with sex were selected, and an amplicon-based SNP panel was developed. This was used to determine genetic sex of 39 females and 40 males. Eleven phenotypic males were assigned as female with XX genotype, suggesting sex reversal. Genetic sex was also assessed based on the indel of the amh gene promoter, which is the major candidate sex gene of Japanese flounder. We found four SNPs perfectly associated with genotypic sex in the sex-associated SNP panel, one of which was located in exon 2 of the amh gene. Along with the indel of the amh gene promoter, the sex-associated SNP panel will be of value in identifying genetic sex of farmed Japanese flounder. Molecular sexing will facilitate all-female production by breeding sex-reversed males.
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