ArticleBMC genomics2021
A high-density linkage map and sex-linked markers for the Amazon Tambaqui Colossoma macropomum.
Article in BMC genomics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Genome resequencing reveals an XX/XY sex determination system and male-specific markers iniScience · 2026Article
- Article
- Genome-specific association study (GSAS) for exploration of variability in hemp (Cannabis sativa).Scientific reports · 2025Article
- First neurotranscriptome of adults Tambaquis (Colossoma macropomum) with characterization and differential expression between males and females.Scientific reports · 2024Article
- De novo assembly and characterization of a highly degenerated ZW sex chromosome in the fish Megaleporinus macrocephalus.GigaScience · 2024Article
- Sex determination mechanisms and sex control approaches in aquaculture animals.Science China. Life sciences · 2022Review
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Authors and funding
12 authors.
Funding
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Abstract
backgroundTambaqui (Colossoma macropomum, Cuvier, 1818) is the most economically important native freshwater fish species in Brazil. It can reach a total length of over 1 m and a weight of over 40 kg. The species displays a clear sex dimorphism in growth performance, with females reaching larger sizes at harvest. In aquaculture, the production of monosex populations in selective breeding programmes has been therefore identified as a key priority.
resultsIn the present study, a genetic linkage map was generated by double digest restriction-site associated DNA (ddRAD) sequencing from 248 individuals sampled from two F1 families. The map was constructed using 14,805 informative SNPs and spanned 27 linkage groups. From this, the tambaqui draft genome was improved, by ordering the scaffolds into chromosomes, and sex-linked markers were identified. A total of 235 markers on linkage group 26 showed a significant association with the phenotypic sex, supporting an XX/XY sex determination system in the species. The four most informative sex-linked markers were validated on another 206 sexed individuals, demonstrating an accuracy in predicting sex ranging from 90.0 to 96.7%.
conclusionsThe genetic mapping and novel sex-linked DNA markers identified and validated offer new tools for rapid progeny sexing, thus supporting the development of monosex female production in the industry while also supporting breeding programmes of the species.
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