ArticleHeredity2011
Independent fusions and recent origins of sex chromosomes in the evolution and diversification of glass knife fishes (Eigenmannia).
Article in Heredity, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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Who cites it
27 citing papers in PubMed, 37 citations in OpenAlex.
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- Chromosomal Diversification inFrontiers in genetics · 2022Article
- Karyotype description and comparative chromosomal mapping of rDNA and U2 snDNA sequences inComparative cytogenetics · 2022Article
- Against the mainstream: exceptional evolutionary stability of ZW sex chromosomes across the fish families Triportheidae and Gasteropelecidae (Teleostei: Characiformes).Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2021Article
- Multiple sex chromosomes in teleost fishes from a cytogenetic perspective: state of the art and future challenges.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021Review
- Sex chromosome evolution in frogs-helpful insights from chromosome painting in the genus Engystomops.Heredity · 2021Article
- Deciphering the Origin and Evolution of the XInternational journal of molecular sciences · 2019Article
- Comparative Cytogenetics and Neo-Y Formation in Small-Sized Fish Species of the Genus Pyrrhulina (Characiformes, Lebiasinidae).Frontiers in genetics · 2019Article
- Evidence for a Robertsonian fusion in Solea senegalensis (Kaup, 1858) revealed by zoo-FISH and comparative genome analysis.BMC genomics · 2018Article
- The transcriptomic signature of different sexes in two protogynous hermaphrodites: Insights into the molecular network underlying sex phenotype in fish.Scientific reports · 2018Article
- Extensive Karyotype Reorganization in the FishFrontiers in genetics · 2018Article
- The Gene Toolkit Implicated in Functional Sex in Sparidae Hermaphrodites: Inferences From Comparative Transcriptomics.Frontiers in genetics · 2018Article
- Hidden Diversity in the Populations of the Armored CatfishFrontiers in genetics · 2017Article
- X1X1X2X2/X1X2Y sex chromosome systems in the Neotropical Gymnotiformes electric fish of the genus Brachyhypopomus.Genetics and molecular biology · 2015Article
- Large-scale transcriptome sequencing reveals novel expression patterns for key sex-related genes in a sex-changing fish.Biology of sex differences · 2015Article
- Estimating tempo and mode of Y chromosome turnover: explaining Y chromosome loss with the fragile Y hypothesis.Genetics · 2014Article
- Single origin of sex chromosomes and multiple origins of B chromosomes in fish genus Characidium.PloS one · 2014Article
- Karyotype diversity and patterns of chromosomal evolution in Eigenmannia (Teleostei, Gymnotiformes, Sternopygidae).Comparative cytogenetics · 2014Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The genus Eigenmannia comprises several species groups that display a surprising variety of diploid chromosome numbers and sex-determining systems. In this study, hypotheses regarding phylogenetic relationships and karyotype evolution were investigated using a combination of molecular and cytogenetic methods. Phylogenetic relationships were analyzed for 11 cytotypes based on sequences from five mitochondrial DNA regions. Parsimony-based character mapping of sex chromosomes confirms previous suggestions of multiple origins of sex chromosomes. Molecular cytogenetic analyses involved chromosome painting using probes derived from whole sex chromosomes from two taxa that were hybridized to metaphases of their respective sister cytotypes. These analyses showed that a multiple XY system evolved recently (<7 mya) by fusion. Furthermore, one of the chromosomes that fused to form the neo-Y chromosome is fused independently to another chromosome in the sister cytotype. This may constitute an efficient post-mating barrier and might imply a direct function of sex chromosomes in the speciation processes in Eigenmannia. The other chromosomal sex-determination system investigated is shown to have differentiated by an accumulation of heterochromatin on the X chromosome. This has occurred in the past 0.6 my, and is the most recent chromosomal sex-determining system described to date. These results show that the evolution of sex-determining systems can proceed very rapidly.
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