ArticleBMC genetics2011
Chromosomal painting and ZW sex chromosomes differentiation in Characidium (Characiformes, Crenuchidae).
Article in BMC genetics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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20 citing papers in PubMed, 41 citations in OpenAlex.
- First cytogenetic data on Afrotropical lutefishes (Citharinidae) in the light of karyotype evolution in Characiformes.Comparative cytogenetics · 2022Article
- Comparative Cytogenetics and Neo-Y Formation in Small-Sized Fish Species of the Genus Pyrrhulina (Characiformes, Lebiasinidae).Frontiers in genetics · 2019Article
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- Tracking the evolutionary pathway of sex chromosomes among fishes: characterizing the unique XX/XYChromosoma · 2018Article
- The karyotypes and evolution of ZZ/ZW sex chromosomes in the genusComparative cytogenetics · 2018Review
- Extensive spreading of interstitial telomeric sites on the chromosomes of Characidium (Teleostei, Characiformes).Genetica · 2015Article
- Repetitive DNA Sequences and Evolution of ZZ/ZW Sex Chromosomes in Characidium (Teleostei: Characiformes).PloS one · 2015Article
- Laser microdissection-based analysis of the Y sex chromosome of the Antarctic fish Chionodracohamatus (Notothenioidei, Channichthyidae).Comparative cytogenetics · 2015Article
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- Single origin of sex chromosomes and multiple origins of B chromosomes in fish genus Characidium.PloS one · 2014Article
- Chromosome painting of Z and W sex chromosomes in Characidium (Characiformes, Crenuchidae).Genetica · 2013Article
- Article
- Sex chromosome system ZZ/ZW in Apareiodon hasemani Eigenmann, 1916 (Characiformes, Parodontidae) and a derived chromosomal region.Genetics and molecular biology · 2012Article
- Repetitive sequences associated with differentiation of W chromosome in Semaprochilodus taeniurus.Genetica · 2012Article
- First karyotype description of Hypostomus iheringii (Regan, 1908): a case of heterochromatic polymorphism.Comparative cytogenetics · 2012Article
- Article
- Chromosomal diversification in ribosomal DNA sites in Ancistrus Kner, 1854 (Loricariidae, Ancistrini) from three hydrographic basins of Mato Grosso, Brazil.Comparative cytogenetics · 2011Article
- Dispersion of transposable elements and multigene families: Microstructural variation in Characidium (Characiformes: Crenuchidae) genomes.Genetics and molecular biologyArticle
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11 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe Characidium (a Neotropical fish group) have a conserved diploid number (2n = 50), but show remarkable differences among species and populations in relation to sex chromosome systems and location of nucleolus organizer regions (NOR). In this study, we isolated a W-specific probe for the Characidium and characterized six Characidium species/populations using cytogenetic procedures. We analyzed the origin and differentiation of sex and NOR-bearing chromosomes by chromosome painting in populations of Characidium to reveal their evolution, phylogeny, and biogeography.
resultsA W-specific probe for efficient chromosome painting was isolated by microdissection and degenerate oligonucleotide primed-polymerase chain reaction (DOP-PCR) amplification of W chromosomes from C. gomesi. The W probe generated weak signals dispersed on the proto sex chromosomes in C. zebra, dispersed signals in both W and Z chromosomes in C. lauroi and, in C. gomesi populations revealed a proximal site on the long arms of the Z chromosome and the entire W chromosome. All populations showed small terminal W probe sites in some autosomes. The 18S rDNA revealed distinctive patterns for each analyzed species/population with regard to proto sex chromosome, sex chromosome pair, and autosome location.
conclusionsThe results from dual-color fluorescence in situ hybridization (dual-color FISH) using W and 18S rDNA probes allowed us to infer the putative evolutionary pathways for the differentiation of sex chromosomes and NORs, from structural rearrangements in a sex proto-chromosome, followed by gene erosion and heterochromatin amplification, morphological differentiation of the sex chromosomal pair, and NOR transposition, giving rise to the distinctive patterns observed among species/populations of Characidium. Biogeographic isolation and differentiation of sex chromosomes seem to have played a major role in the speciation process in this group of fish.
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