ArticleBMC genomics2013
Chromosome rearrangements, recombination suppression, and limited segregation distortion in hybrids between Yellowstone cutthroat trout (Oncorhynchus clarkii bouvieri) and rainbow trout (O. mykiss).
Article in BMC genomics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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26 citing papers in PubMed, 50 citations in OpenAlex.
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- The genome assembly of the westslope cutthroat trout, Oncorhynchus lewisi, reveals interspecific chromosomal rearrangements with the rainbow trout, Oncorhynchus mykiss.G3 (Bethesda, Md.) · 2025Article
- Genomic Architecture of the Clownfish Hybrid Amphiprion leucokranos.Genome biology and evolution · 2025Article
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- Construction of Genetic Linkage Maps From a Hybrid Family of Large Yellow Croaker (Frontiers in genetics · 2021Article
- Chromosome reciprocal translocations have accompanied subspecies evolution in bananas.The Plant journal : for cell and molecular biology · 2020Article
- Identification of transcription factors controlling floral morphology in wild Petunia species with contrasting pollination syndromes.The Plant journal : for cell and molecular biology · 2020Article
- Genomic Chaos Begets Psychiatric Disorder.Complex psychiatry · 2020Review
- Eukaryote hybrid genomes.PLoS genetics · 2019Article
- Variable hybridization outcomes in trout are predicted by historical fish stocking and environmental context.Molecular ecology · 2019Article
- Evolution of the Banana Genome (Musa acuminata) Is Impacted by Large Chromosomal Translocations.Molecular biology and evolution · 2017Article
- Linkage Map ofG3 (Bethesda, Md.) · 2017Article
- Night Monkey Hybrids Exhibit De Novo Genomic and Karyotypic Alterations: The First Such Case in Primates.Genome biology and evolution · 2017Article
- A SNP Based Linkage Map of the Arctic Charr (G3 (Bethesda, Md.) · 2017Article
- Salmonid Chromosome Evolution as Revealed by a Novel Method for Comparing RADseq Linkage Maps.Genome biology and evolution · 2016Article
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Authors and funding
5 authors at 5 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundIntrogressive hybridization is an important evolutionary process that can lead to the creation of novel genome structures and thus potentially new genetic variation for selection to act upon. On the other hand, hybridization with introduced species can threaten native species, such as cutthroat trout (Oncorhynchus clarkii) following the introduction of rainbow trout (O. mykiss). Neither the evolutionary consequences nor conservation implications of rainbow trout introgression in cutthroat trout is well understood. Therefore, we generated a genetic linkage map for rainbow-Yellowstone cutthroat trout (O. clarkii bouvieri) hybrids to evaluate genome processes that may help explain how introgression affects hybrid genome evolution.
resultsThe hybrid map closely aligned with the rainbow trout map (a cutthroat trout map does not exist), sharing all but one linkage group. This linkage group (RYHyb20) represented a fusion between an acrocentric (Omy28) and a metacentric chromosome (Omy20) in rainbow trout. Additional mapping in Yellowstone cutthroat trout indicated the two rainbow trout homologues were fused in the Yellowstone genome. Variation in the number of hybrid linkage groups (28 or 29) likely depended on a Robertsonian rearrangement polymorphism within the rainbow trout stock. Comparison between the female-merged F₁ map and a female consensus rainbow trout map revealed that introgression suppressed recombination across large genomic regions in 5 hybrid linkage groups. Two of these linkage groups (RYHyb20 and RYHyb25_29) contained confirmed chromosome rearrangements between rainbow and Yellowstone cutthroat trout indicating that rearrangements may suppress recombination. The frequency of allelic and genotypic segregation distortion varied among parents and families, suggesting few incompatibilities exist between rainbow and Yellowstone cutthroat trout genomes.
conclusionsChromosome rearrangements suppressed recombination in the hybrids. This result supports several previous findings demonstrating that recombination suppression restricts gene flow between chromosomes that differ by arrangement. Conservation of synteny and map order between the hybrid and rainbow trout maps and minimal segregation distortion in the hybrids suggest rainbow and Yellowstone cutthroat trout genomes freely introgress across chromosomes with similar arrangement. Taken together, these results suggest that rearrangements impede introgression. Recombination suppression across rearrangements could enable large portions of non-recombined chromosomes to persist within admixed populations.
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