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dc.contributor.authorDrovetski, Sergei V.
dc.contributor.authorRakovic, Marko
dc.contributor.authorSemenov, Georgy
dc.contributor.authorFadeev, Igor V.
dc.contributor.authorRed'kin, Yaroslav A.
dc.date.accessioned2014-02-18T14:02:43Z
dc.date.available2014-02-18T14:02:43Z
dc.date.issued2014
dc.description.abstractPhylogeographic studies of Holarctic birds are challenging because they involve vast geographic scale, complex glacial history, extensive phenotypic variation, and heterogeneous taxonomic treatment across countries, all of which require large sample sizes. Knowledge about the quality of phylogeographic information provided by different loci is crucial for study design. We use sequences of one mtDNA gene, one sex-linked intron, and one autosomal intron to elucidate large scale phylogeographic patterns in the Holarctic lark genus Eremophila. The mtDNA ND2 gene identified six geographically, ecologically, and phenotypically concordant clades in the Palearctic that diverged in the Early - Middle Pleistocene and suggested paraphyly of the horned lark (E. alpestris) with respect to the Temminck’s lark (E. bilopha). In the Nearctic, ND2 identified five subclades which diverged in the Late Pleistocene. They overlapped geographically and were not concordant phenotypically or ecologically. Nuclear alleles provided little information on geographic structuring of genetic variation in horned larks beyond supporting the monophyly of Eremophila and paraphyly of the horned lark. Multilocus species trees based on two nuclear or all three loci provided poor support for haplogroups identified by mtDNA. The node ages calculated using mtDNA were consistent with the available paleontological data, whereas individual nuclear loci and multilocus species trees appeared to underestimate node ages. We argue that mtDNA is capable of discovering independent evolutionary units within avian taxa and can provide a reasonable phylogeographic hypothesis when geographic scale, geologic history, and phenotypic variation in the study system are too complex for proposing reasonable a priori hypotheses required for multilocus methods. Finally, we suggest splitting the currently recognized horned lark into five Palearctic and one Nearctic species.en
dc.identifier.citationPLoS ONE (2014), vol. 9(1): e87570en
dc.identifier.cristinIDFRIDAID 1108871
dc.identifier.doihttp://dx.doi.org/10.1371/journal.pone.0087570
dc.identifier.issn1932-6203
dc.identifier.urihttps://hdl.handle.net/10037/5852
dc.identifier.urnURN:NBN:no-uit_munin_5542
dc.language.isoengen
dc.publisherPublic Library of Science (PLoS)en
dc.rights.accessRightsopenAccess
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480::Systematic zoology: 487en
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Systematisk zoologi: 487en
dc.titleLimited Phylogeographic Signal in Sex-Linked and Autosomal Loci Despite Geographically, Ecologically, and Phenotypically Concordant Structure of mtDNA Variation in the Holarctic Avian Genus Eremophilaen
dc.typeJournal articleen
dc.typeTidsskriftartikkelen
dc.typePeer revieweden


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