ArticleScientific reports2022
Sex chromosomes in the tribe Cyprichromini (Teleostei: Cichlidae) of Lake Tanganyika.
Article in Scientific reports, 2022. 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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7 citing papers in PubMed, 7 citations in OpenAlex.
- Different sex determination systems in two closely related Eurasian minnow (Phoxinus) species.Heredity · 2026Article
- ZW and XY Sex Chromosomes Drive Rapid and Distinctive Evolution of Sex-Biased Gene Expression.Molecular ecology · 2025Article
- A Chromosome Inversion Creates a Supergene for Sex and Colour in Lake Malawi Cichlids.Molecular ecology · 2025Article
- K-mer-based Approaches to Bridging Pangenomics and Population Genetics.Molecular biology and evolution · 2025Review
- Diversity of Sex Chromosomes in Vertebrates: Six Novel Sex Chromosomes in Basal Haplochromines (Teleostei: Cichlidae).Genome biology and evolution · 2024Article
- Turnover of sex chromosomes in the Lake Tanganyika cichlid tribe Tropheini (Teleostei: Cichlidae).Scientific reports · 2024Article
- Genome assemblies forFrontiers in genetics · 2024Article
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Authors and funding
3 authors at 2 institutions in 2 countries.
Funding
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Abstract
Sex determining loci have been described on at least 12 of 22 chromosomes in East African cichlid fishes, indicating a high rate of sex chromosome turnover. To better understand the rates and patterns of sex chromosome replacement, we used new methods to characterize the sex chromosomes of the cichlid tribe Cyprichromini from Lake Tanganyika. Our k-mer based methods successfully identified sex-linked polymorphisms without the need for a reference genome. We confirm the three previously reported sex chromosomes in this group. We determined the polarity of the sex chromosome turnover on LG05 in Cyprichromis as ZW to XY. We identified a new ZW locus on LG04 in Paracyprichromis brieni. The LG15 XY locus in Paracyprichromis nigripinnis was not found in other Paracyprichromis species, and the sample of Paracyprichromis sp. "tembwe" is likely to be of hybrid origin. Although highly divergent sex chromosomes are thought to develop in a stepwise manner, we show two cases (LG05-ZW and LG05-XY) in which the region of differentiation encompasses most of the chromosome, but appears to have arisen in a single step. This study expands our understanding of sex chromosome evolution in the Cyprichromini, and indicates an even higher level of sex chromosome turnover than previously thought.
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