ArticleScientific reports2024
Turnover of sex chromosomes in the Lake Tanganyika cichlid tribe Tropheini (Teleostei: Cichlidae).
Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 7 citations in OpenAlex.
- Same Sex Chromosomes With Independent Origins in Haplochromine Cichlids.Genome biology and evolution · 2026Article
- Causes and consequences of sex-chromosome turnovers in Diptera.Evolution letters · 2026Article
- Before the East African Radiation: Sex Chromosome Systems in Basal Haplotilapiine Cichlids.Genome biology and evolution · 2026Article
- A Chromosome Inversion Creates a Supergene for Sex and Colour in Lake Malawi Cichlids.Molecular ecology · 2025Article
- Gene Duplication, Translocation, and Molecular Evolution ofBiomolecules · 2025Article
- Diversity of Sex Chromosomes in Vertebrates: Six Novel Sex Chromosomes in Basal Haplochromines (Teleostei: Cichlidae).Genome biology and evolution · 2024Article
- Genome assemblies forFrontiers in genetics · 2024Article
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Authors and funding
6 authors at 4 institutions in 4 countries.
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Abstract
Sex chromosome replacement is frequent in many vertebrate clades, including fish, frogs, and lizards. In order to understand the mechanisms responsible for sex chromosome turnover and the early stages of sex chromosome divergence, it is necessary to study lineages with recently evolved sex chromosomes. Here we examine sex chromosome evolution in a group of African cichlid fishes (tribe Tropheini) which began to diverge from one another less than 4 MYA. We have evidence for a previously unknown sex chromosome system, and preliminary indications of several additional systems not previously reported in this group. We find a high frequency of sex chromosome turnover and estimate a minimum of 14 turnovers in this tribe. We date the origin of the most common sex determining system in this tribe (XY-LG5/19) near the base of one of two major sub-clades of this tribe, about 3.4 MY ago. Finally, we observe variation in the size of one sex-determining region that suggests independent evolution of evolutionary strata in species with a shared sex-determination system. Our results illuminate the rapid rate of sex chromosome turnover in the tribe Tropheini and set the stage for further studies of the dynamics of sex chromosome evolution in this group.
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