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Ongoing Movement of the Hermit Warbler X Townsend's Warbler Hybrid Zone

PLoS One, Nov 2010, Vol.5(11), p.e14164 [Peer Reviewed Journal]

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  • Title:
    Ongoing Movement of the Hermit Warbler X Townsend's Warbler Hybrid Zone
  • Author: Rohwer, Sievert
  • Found In: PLoS One, Nov 2010, Vol.5(11), p.e14164 [Peer Reviewed Journal]
  • Subjects: Parulidae ; Dendroica Townsendi ; Dendroica Occidentalis ; Oregon ; Animal Behavior ; Climate Change ; Biology ; Mitochondrial DNA ; Museums ; Climate Change ; Competition ; Historic Sites ; Studies ; Deoxyribonucleic Acid–DNA ; Biological Diversity ; Environmental Factors ; Movement ; Haplotypes ; Hybrid Zones
  • Language: English
  • Description: Background Movements of hybrid zones – areas of overlap and interbreeding between species – are difficult to document empirically. This is true because moving hybrid zones are expected to be rare, and because movement may proceed too slowly to be measured directly. Townsend's warblers (Dendroica townsendi) hybridize with hermit warblers (D. occidentalis) where their ranges overlap in Washington and Oregon. Previous morphological, behavioral, and genetic studies of this hybrid zone suggest that it has been steadily moving into the geographical range of hermit warblers, with the more aggressive Townsend's warblers replacing hermit warblers along ∼2000 km of the Pacific coast of Canada and Alaska. Ongoing movement of the zone, however, has yet to be empirically demonstrated. Methodology/Principal Findings We compared recently sampled hybrid zone specimens to those collected 10–20 years earlier, to test directly the long-standing hypothesis of hybrid zone movement between these species. Newly...
  • Identifier: E-ISSN: 19326203 ; DOI: 10.1371/journal.pone.0014164

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