Random interbreeding between cryptic lineages of the Common Raven: evidence for speciation in reverse

@article{Webb2011RandomIB,
  title={Random interbreeding between cryptic lineages of the Common Raven: evidence for speciation in reverse},
  author={William C. Webb and John M. Marzluff and Kevin E Omland},
  journal={Molecular Ecology},
  year={2011},
  volume={20}
}
DNA sequence studies frequently reveal evidence of cryptic lineages in morphologically uniform species, many of which turn out to be evolutionarily distinct species. The Common Raven (Corvus corax) includes two deeply divergent mtDNA lineages: one lineage seems restricted to western North America and the other is Holarctic in distribution. These deep clades hint of the possibility of cryptic species in the western United States. We tested this hypothesis in a population consisting of an equal… 
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This study illustrates that incipient shorebird species with gene flow after secondary contact can exhibit discrete divergence at specific genomic regions and provides basis to further exploration on the genetic basis of relevant phenotypic traits.
Demographic Histories and Genome-Wide Patterns of Divergence in Incipient Species of Shorebirds
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This study illustrates that incipient shorebird species with gene flow after secondary contact can exhibit discrete divergence at specific genomic regions and provides basis to further exploration on the genetic basis of relevant phenotypic traits.
PERCHED AT THE MITO‐NUCLEAR CROSSROADS: DIVERGENT MITOCHONDRIAL LINEAGES CORRELATE WITH ENVIRONMENT IN THE FACE OF ONGOING NUCLEAR GENE FLOW IN AN AUSTRALIAN BIRD
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Observed mito‐nuclear discordance accords with environmental selection on a female‐linked trait, such as mtDNA, mtDNA–nDNA interactions or genes on W‐chromosome, driving mitochondrial divergence in the presence of nuclear gene flow.
Maintenance of Species Boundaries Despite Ongoing Gene Flow in Ragworts
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Using a D-statistic approach, previously unknown cases of introgressive hybridization between multiple pairs of taxa across the species tree are demonstrated, suggesting that introgressed hybridization may be a widespread and important process in plant evolution.
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