Genomic evidence of speciation reversal in ravens

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dc.contributor.authorKearns, Anna M.
dc.contributor.authorRestani, Marco
dc.contributor.authorSzabo, Ildiko
dc.contributor.authorSchrøder-Nielsen, Audun
dc.contributor.authorKim, Jin Ah
dc.contributor.authorRichardson, Hayley M.
dc.contributor.authorMarzluff, John M.
dc.contributor.authorFleischer, Robert C.
dc.contributor.authorJohnsen, Arild
dc.contributor.authorOmland, Kevin
dc.date.accessioned2018-11-09T17:36:15Z
dc.date.available2018-11-09T17:36:15Z
dc.date.issued2018-03-02
dc.description.abstractMany species, including humans, have emerged via complex reticulate processes involving hybridisation. Under certain circumstances, hybridisation can cause distinct lineages to collapse into a single lineage with an admixed mosaic genome. Most known cases of such ‘speciation reversal’ or ‘lineage fusion’ involve recently diverged lineages and anthropogenic perturbation. Here, we show that in western North America, Common Ravens (Corvus corax) have admixed mosaic genomes formed by the fusion of non-sister lineages (‘California’ and ‘Holarctic’) that diverged ~1.5 million years ago. Phylogenomic analyses and concordant patterns of geographic structuring in mtDNA, genome-wide SNPs and nuclear introns demonstrate long-term admixture and random interbreeding between the non-sister lineages. In contrast, our genomic data support reproductive isolation between Common Ravens and Chihuahuan Ravens (C. cryptoleucus) despite extensive geographic overlap and a sister relationship between Chihuahuan Ravens and the California lineage. These data suggest that the Common Raven genome was formed by secondary lineage fusion and most likely represents a case of ancient speciation reversal that occurred without anthropogenic causes.en_US
dc.description.sponsorshipThis project was supported by a grant from the Research Council of Norway to A.J. (grant #213592). J.A.K. and H.M.R. were supported by the NSF UBM undergraduate training programme (NSF DBI-1031420). We thank M. Chutter (British Columbia FLINRO Bird Specialist) for issuing a directive to all provincial wildlife offices in British Columbia to notify us of raven fatalities; J. Evans, K. Otter, C. Stinson and R. Hanna for assistance in procuring raven samples in British Columbia; R. Yates for assistance with field work in Montana; AMNH, ANSP, BMNH, BRTC, CUMV, DMNH, DMNS, FMNH, KU, LSUMNZ, MBM, MVZ, NAU, NCSM, NYSM, OMNH, RAM, RSM, SDSU, UA, UAM, UBCBBM, UCSB, UMMZ, UNMMSB, USNM, UWBM, B. Bedrosian and many others for specimens used in this study (see Supplementary Data 1 for full details); S. Hogner for assistance with DNA extractions and ddRAD library preparation; M. N. Cortez-Rodriguez and S. Campbell for help with sequencing of toe-pad specimens. Species tree analyses were performed on the Smithsonian Institution High Performance Cluster (SI/HPC).en_US
dc.description.urihttps://www.nature.com/articles/s41467-018-03294-wen_US
dc.format.extent13 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/M2DZ0356D
dc.identifier.citationAnna M. Kearns, Marco Restani, Ildiko Szabo, Audun Schrøder-Nielsen, Jin Ah Kim, Hayley M. Richardson, John M. Marzluff, Robert C. Fleischer, Arild Johnsen & Kevin E. Omland , Genomic evidence of speciation reversal in ravens, Nature research journal volume 9, Article number: 906 (2018) , https://doi.org/10.1038/s41467-018-03294-wen_US
dc.identifier.urihttps://doi.org/10.1038/s41467-018-03294-w
dc.identifier.urihttp://hdl.handle.net/11603/11939
dc.language.isoen_USen_US
dc.publisherSpringer Nature Limiteden_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Biological Sciences Department Collection
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsAttribution 4.0 International (CC BY 4.0)*
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.subjectGenomicen_US
dc.subjectevidence of speciationen_US
dc.subjectEvolutionary Geneticsen_US
dc.subjectravensen_US
dc.titleGenomic evidence of speciation reversal in ravensen_US
dc.typeTexten_US

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