ArticleGenome biology and evolution2019
Repeated Evolution Versus Common Ancestry: Sex Chromosome Evolution in the Haplochromine Cichlid Pseudocrenilabrus philander.
Article in Genome biology and evolution, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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19 citing papers in PubMed, 30 citations in OpenAlex.
- Same Sex Chromosomes With Independent Origins in Haplochromine Cichlids.Genome biology and evolution · 2026Article
- Evolution of a ZW sex determination system in sticklebacks.Science advances · 2026Article
- Rapid turnover of sex-determining architecture in invasive mussels.bioRxiv : the preprint server for biology · 2026Article
- Sex Chromosome Evolution: Hallmarks and Question Marks.Molecular biology and evolution · 2024Review
- Diversity of Sex Chromosomes in Vertebrates: Six Novel Sex Chromosomes in Basal Haplochromines (Teleostei: Cichlidae).Genome biology and evolution · 2024Article
- Potential Contribution of Ancient Introgression to the Evolution of a Derived Reproductive Strategy in Ricefishes.Genome biology and evolution · 2023Article
- No evidence for sex chromosomes in natural populations of the cichlid fish Astatotilapia burtoni.G3 (Bethesda, Md.) · 2023Article
- Repeated translocation of a supergene underlying rapid sex chromosome turnover inProceedings of the National Academy of Sciences of the United States of America · 2022Article
- Something Fishy about Siamese Fighting Fish (Cells · 2022Article
- Polymorphism of Sex Determination Amongst Wild Populations Suggests its Rapid Turnover Within the Nile Tilapia Species.Frontiers in genetics · 2022Article
- Speciation dynamics and extent of parallel evolution along a lake-stream environmental contrast in African cichlid fishes.Science advances · 2021Article
- Dynamics of sex chromosome evolution in a rapid radiation of cichlid fishes.Science advances · 2021Article
- Are Geckos Special in Sex Determination? Independently Evolved Differentiated ZZ/ZW Sex Chromosomes in Carphodactylid Geckos.Genome biology and evolution · 2021Article
- Gene Variant ofInternational journal of molecular sciences · 2021Article
- Identification of a novel sex determining chromosome in cichlid fishes that acts as XY or ZW in different lineages.Hydrobiologia · 2021Article
- Article
- The genomic timeline of cichlid fish diversification across continents.Nature communications · 2020Article
- Disagreement in FMolecular ecology resources · 2020Article
- Sex Chromosome Evolution: So Many Exceptions to the Rules.Genome biology and evolution · 2020Review
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Authors and funding
7 authors at 1 institution in 2 countries.
Funding
Abstract
Why sex chromosomes turn over and remain undifferentiated in some taxa, whereas they degenerate in others, is still an area of ongoing research. The recurrent occurrence of homologous and homomorphic sex chromosomes in distantly related taxa suggests their independent evolution or continued recombination since their first emergence. Fishes display a great diversity of sex-determining systems. Here, we focus on sex chromosome evolution in haplochromines, the most species-rich lineage of cichlid fishes. We investigate sex-specific signatures in the Pseudocrenilabrus philander species complex, which belongs to a haplochromine genus found in many river systems and ichthyogeographic regions in northern, eastern, central, and southern Africa. Using whole-genome sequencing and population genetic, phylogenetic, and read-coverage analyses, we show that one population of P. philander has an XX-XY sex-determining system on LG7 with a large region of suppressed recombination. However, in a second bottlenecked population, we did not find any sign of a sex chromosome. Interestingly, LG7 also carries an XX-XY system in the phylogenetically more derived Lake Malawi haplochromine cichlids. Although the genomic regions determining sex are the same in Lake Malawi cichlids and P. philander, we did not find evidence for shared ancestry, suggesting that LG7 evolved as sex chromosome at least twice in haplochromine cichlids. Hence, our work provides further evidence for the labile nature of sex determination in fishes and supports the hypothesis that the same genomic regions can repeatedly and rapidly be recruited as sex chromosomes in more distantly related lineages.
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