ArticleBMC genomics2024
A high-density linkage map and sex-determination loci in Pacific white shrimp (Litopenaeus vannamei).
Article in BMC genomics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed.
- Research on Quantitative Analysis Technology for Pacific White Shrimp Density Based on Environmental DNA.Ecology and evolution · 2026Article
- Genome-wide Association Study Identifies SNPs and Candidate Genes Associated with Abdominal Meat Weight and Meat Yield of red Swamp Crayfish Procambarus clarkii.Marine biotechnology (New York, N.Y.) · 2026Article
- First High-Density Linkage Map and Quantitative Trait Loci for Disease Resistance in Striped CatfishInternational journal of molecular sciences · 2026Article
- Genome-Wide Association Study for Weight-Related Traits inAnimals : an open access journal from MDPI · 2025Article
- Oysters in transition: hermaphrodite oysters display unique DNA methylation patterns in gill tissue.BMC genomics · 2025Article
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9 authors.
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Abstract
backgroundExpansion of genomic resources for the Pacific white shrimp (Litopenaeus vannamei), such as the construction of dense genetic linkage maps, is crucial for the application of genomic tools in order to improve economically relevant traits. Sexual dimorphism exists in Pacific white shrimp, and the mapping of the sex-determination region in this species may help in future reproductive applications. We have constructed male, female, and sex-averaged high-density genetic maps using a 50 K single-nucleotide polymorphism (SNP) array, followed by a genome-wide association study (GWAS) to identify genomic regions associated with sex in white shrimp.
resultsThe genetic map yielded 15,256 SNPs assigned to 44 linkage groups (LG). The lengths of the male, female, and sex-averaged maps were 5,741.36, 5,461.20 and 5,525.26 cM, respectively. LG18 was found to be the largest for both sexes, whereas LG44 was the shortest for males and LG31 for females. A sex-determining region was found in LG31 with 21 statistically significant SNPs. The most important SNP was previously identified as a sex-linked marker and was able to identify 99% of the males and 88% of the females. Although other significant markers had a lower ability to determine sex, putative genes were intercepted or close to them. The oplophorus-luciferin 2-monooxygenase, serine/arginine repetitive matrix protein and spermine oxidase genes were identified as candidates with possible participation in important processes of sexual differentiation in shrimp.
conclusionsOur results provide novel genomic resources for shrimp, including a high-density linkage map and new insights into the sex-determining region in L. vannamei, which may be usefulfor future genetics and reproduction applications.
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