Implications of genome-wide single nucleotide polymorphisms in jade perch (Scortum barcoo) reveals the putative XX/XY sex-determination system, facilitating a new chapter of sex control in aquaculture

Suntronpong, Aorarat; Panthum, Thitipong; Laopichienpong, Nararat; Nguyen, Dung Ho My; Kraichak, Ekaphan; Singchat, Worapong; Ariyaraphong, Nattakan; Ahmad, Syed Farhan; Muangmai, Narongrit; Duengkae, Prateep; Peyachoknagul, Surin; Ezaz, Tariq; Srikulnath, Kornsorn

doi:10.1016/j.aquaculture.2021.737587

Cited by 6 publications

(1 citation statement)

References 102 publications

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“…Recent next-generation sequencing technologies have facilitated the discovery of numerous genetic markers in any organism at affordable costs, facilitating investigations of genetic diversity within and between populations [ 27 ]. Only a fraction of homologous regions in the genomes of non-model species can be sequenced and genotyped for single-nucleotide polymorphisms (SNPs) to identify the genomic regions of sex-determining loci [ 16 , 17 , 18 , 28 , 29 , 30 , 31 ]. In this study, we addressed our first hypothesis using a genome-wide SNP approach to identify novel SNP loci in captive-bred individuals with known phenotypic sex assignment and determine associated regions in Siamese fighting fish.…”

Section: Introductionmentioning

confidence: 99%

Something Fishy about Siamese Fighting Fish (Betta splendens) Sex: Polygenic Sex Determination or a Newly Emerged Sex-Determining Region?

Panthum

Jaisamut

Singchat

et al. 2022

Cells

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Fishes provide a unique and intriguing model system for studying the genomic origin and evolutionary mechanisms underlying sex determination and high sex-chromosome turnover. In this study, the mode of sex determination was investigated in Siamese fighting fish, a species of commercial importance. Genome-wide SNP analyses were performed on 75 individuals (40 males and 35 females) across commercial populations to determine candidate sex-specific/sex-linked loci. In total, 73 male-specific loci were identified and mapped to a 5.6 kb region on chromosome 9, suggesting a putative male-determining region (pMDR) containing localized dmrt1 and znrf3 functional sex developmental genes. Repeat annotations of the pMDR revealed an abundance of transposable elements, particularly Ty3/Gypsy and novel repeats. Remarkably, two out of the 73 male-specific loci were located on chromosomes 7 and 19, implying the existence of polygenic sex determination. Besides male-specific loci, five female-specific loci on chromosome 9 were also observed in certain populations, indicating the possibility of a female-determining region and the polygenic nature of sex determination. An alternative explanation is that male-specific loci derived from other chromosomes or female-specific loci in Siamese fighting fish recently emerged as new sex-determining loci during domestication and repeated hybridization.

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Section: Introductionmentioning

confidence: 99%

Something Fishy about Siamese Fighting Fish (Betta splendens) Sex: Polygenic Sex Determination or a Newly Emerged Sex-Determining Region?

Panthum

Jaisamut

Singchat

et al. 2022

Cells

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Screening and characterization of sex-linked DNA markers in Mozambique tilapia (Oreochromis mossambicus)

et al. 2022

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Assembly of the poorly differentiated Verasper variegatus W chromosome by different sequencing technologies

Xu,

Sun,

Gao

et al. 2023

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The assembly of W and Y chromosomes poses significant challenges in vertebrate genome sequencing and assembly. Here, we successfully assembled the W chromosome of Verasper variegatus with a length of 20.48 Mb by combining population and PacBio HiFi sequencing data. It was identified as a young sex chromosome and showed signs of expansion in repetitive sequences. The major component of the expansion was Ty3/Gypsy. The ancestral Osteichthyes karyotype consists of 24 protochromosomes. The sex chromosomes in four Pleuronectiformes species derived from a pair of homologous protochromosomes resulting from a whole-genome duplication event in teleost fish, yet with different sex-determination systems. V. variegatus and Cynoglossus semilaevis adhere to the ZZ/ZW system, while Hippoglossus stenolepis and H. hippoglossus follow the XX/XY system. Interestingly, V. variegatus and H. hippoglossus derived from one protochromosome, while C. semilaevis and H. stenolepis derived from another protochromosome. Our study provides valuable insights into the evolution of sex chromosomes in flatfish and sheds light on the important role of whole-genome duplication in shaping the evolution of sex chromosomes.

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Implications of genome-wide single nucleotide polymorphisms in jade perch (Scortum barcoo) reveals the putative XX/XY sex-determination system, facilitating a new chapter of sex control in aquaculture

Cited by 6 publications

References 102 publications

Something Fishy about Siamese Fighting Fish (Betta splendens) Sex: Polygenic Sex Determination or a Newly Emerged Sex-Determining Region?

Something Fishy about Siamese Fighting Fish (Betta splendens) Sex: Polygenic Sex Determination or a Newly Emerged Sex-Determining Region?

Screening and characterization of sex-linked DNA markers in Mozambique tilapia (Oreochromis mossambicus)

Assembly of the poorly differentiated Verasper variegatus W chromosome by different sequencing technologies

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