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dc.contributor.authorHogner, Silje
dc.contributor.authorLaskemoen, Terje
dc.contributor.authorLifjeld, Jan Terje
dc.contributor.authorPorkert, Jiri
dc.contributor.authorKleven, Oddmund
dc.contributor.authorAlbayrak, Tamer
dc.contributor.authorKabasakal, Bekir
dc.contributor.authorJohnsen, Arild
dc.identifier.citationEcology and Evolution. 2012, 2 (12), 2974-2988.nb_NO
dc.description.abstractMitochondrial DNA usually shows low sequence variation within and high sequence divergence among species, which makes it a useful marker for phylogenetic inference and DNA barcoding. A previous study on the common redstart (Phoenicurus phoenicurus) revealed two very different mtDNA haplogroups (5% K2P distance). This divergence is comparable to that among many sister species; however, both haplogroups coexist and interbreed in Europe today. Herein, we describe the phylogeographic pattern of these lineages and test hypotheses for how such high diversity in mtDNA has evolved. We found no evidence for mitochondrial pseudogenes confirming that both haplotypes are of mitochondrial origin. When testing for possible reproductive barriers, we found no evidence for lineage-specific assortative mating and no difference in sperm morphology, indicating that they are not examples of cryptic species, nor likely to reflect the early stages of speciation. A gene tree based on a short fragment of cytochrome c oxidase subunit 1 from the common redstart and 10 other Phoenicurus species, showed no introgression from any of the extant congenerics. However, introgression from an extinct congeneric cannot be excluded. Sequences from two nuclear introns did not show a similar differentiation into two distinct groups. Mismatch distributions indicated that the lineages have undergone similar demographic changes. Taken together, these results confirm that deeply divergent mitochondrial lineages can coexist in biological species. Sympatric mtDNA divergences are relatively rare in birds, but the fact that they occur argues against the use of threshold mtDNA divergences in species delineation. Assortative mating, mtDNA, reproductive isolation, sympatric divergencenb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleDeep sympatric mitochondrial divergence without reproductive isolation in the common redstart Phoenicurus phoenicurusnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.subject.nsiVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480nb_NO
dc.source.journalEcology and Evolutionnb_NO
dc.relation.projectNorges forskningsråd: 213592nb_NO
dc.relation.projectNorges forskningsråd: 196554nb_NO
cristin.unitnameAvdeling for terrestrisk økologi

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal