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A genome-wide assessment of stages of elevational parapatry in Bornean passerine birds reveals no introgression : implications for processes and patterns of speciation [PeerJ]

Keywords : biodiversity, biogeography, zoology

par Frédéric Magné - publié le

Topographically complex regions often contain the close juxtaposition of closely related species along elevational gradients. The evolutionary causes of these elevational replacements, and thus the origin and maintenance of a large portion of species diversity along elevational gradients, are usually unclear because ecological differentiation along a gradient or secondary contact following allopatric diversification can produce the same pattern. We used reduced representation genomic sequencing to assess genetic relationships and gene flow between three parapatric pairs of closely related songbird taxa (Arachnothera spiderhunters, Chloropsis leafbirds, and Enicurus forktails) along an elevational gradient in Borneo.(...)

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