ArticlePLoS biology2024
Swordtail fish hybrids reveal that genome evolution is surprisingly predictable after initial hybridization.
Article in PLoS biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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21 citing papers in PubMed.
- Rapid genome-wide purging following tsunami-induced hybridization in a stickleback population.Nature ecology & evolution · 2026Article
- Adaptive introgression between two Drosophila species enhances heat tolerance despite barriers to gene flow.PLoS biology · 2026Article
- Genetics and genomics of hybridization.Nature reviews. Genetics · 2026Review
- On the Causes of Correlated Genomic Ancestry Across Contrasting Hybridization Histories in a Monkeyflower Species Pair.Molecular ecology · 2026Article
- Genomic incompatibilities are persistent barriers when speciation happens with gene flow in Formica ants.Molecular biology and evolution · 2026Article
- Introgression despite minimal hybridization: mating system modulates phenotypic associations with introgression in Clarkia.The New phytologist · 2026Article
- On the causes of correlated genomic ancestry across contrasting hybridization histories in a monkeyflower species pair.bioRxiv : the preprint server for biology · 2026Article
- Sensitivity of genome-wide tests for mitonuclear genetic incompatibilities.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2026Article
- Hypothesis: A modern human range expansion ~300,000 years ago explains Neandertal origins.bioRxiv : the preprint server for biology · 2026Article
- Genome-Scale Nuclear Markers Provide Strong Evidence for Species-Level Differentiation between the Mahseer FishesComputational and structural biotechnology journal · 2026Article
- The molecular evolutionary basis of species formation revisited.Trends in genetics : TIG · 2025Review
- Admixture in a butterfly species complex creates a genomic mosaic of ancestry with distinct histories for different chromosomes.bioRxiv : the preprint server for biology · 2025Article
- Signals of Ancestry-Specific Selection in Gentle Africanized Honey Bees.Genome biology and evolution · 2025Article
- Admixture Mapping Reveals Evidence for Multiple Mitonuclear Incompatibilities in Swordtail Fish Hybrids.Molecular ecology · 2025Article
- Pervasive gene flow despite strong and varied reproductive barriers in swordtails.Nature ecology & evolution · 2025Article
- Hybridization contributes to reproductive isolation.Nature ecology & evolution · 2025Article
- Fluctuating reproductive isolation and stable ancestry structure in a fine-scaled mosaic of hybridizing Mimulus monkeyflowers.PLoS genetics · 2025Article
- Shared Selection and Genetic Architecture Drive Strikingly Repeatable Evolution in Long-Term Experimental Hybrid Populations.Molecular biology and evolution · 2025Article
- Structural genomic variation and behavioral interactions underpin a balanced sexual mimicry polymorphism.Current biology : CB · 2024Article
- Pervasive gene flow despite strong and varied reproductive barriers in swordtails.bioRxiv : the preprint server for biology · 2024Article
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Abstract
Over the past 2 decades, biologists have come to appreciate that hybridization, or genetic exchange between distinct lineages, is remarkably common-not just in particular lineages but in taxonomic groups across the tree of life. As a result, the genomes of many modern species harbor regions inherited from related species. This observation has raised fundamental questions about the degree to which the genomic outcomes of hybridization are repeatable and the degree to which natural selection drives such repeatability. However, a lack of appropriate systems to answer these questions has limited empirical progress in this area. Here, we leverage independently formed hybrid populations between the swordtail fish Xiphophorus birchmanni and X. cortezi to address this fundamental question. We find that local ancestry in one hybrid population is remarkably predictive of local ancestry in another, demographically independent hybrid population. Applying newly developed methods, we can attribute much of this repeatability to strong selection in the earliest generations after initial hybridization. We complement these analyses with time-series data that demonstrates that ancestry at regions under selection has remained stable over the past approximately 40 generations of evolution. Finally, we compare our results to the well-studied X. birchmanni × X. malinche hybrid populations and conclude that deeper evolutionary divergence has resulted in stronger selection and higher repeatability in patterns of local ancestry in hybrids between X. birchmanni and X. cortezi.
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