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Increased genetic divergence between two closely related fir species in areas of range overlap

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Author(s)

Jing Wang, Richard John Abbott, Par K. Ingvarsson, Jian-Quan Liu

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Abstract

Because of introgressive hybridization, closely related species can be more similar to each other in areas of range overlap (parapatry or sympatry) than in
areas where they are geographically isolated from each other (allopatry). Here,
we report the reverse situation based on nuclear genetic divergence between
two fir species, Abies chensiensis and Abies fargesii, in China, at sites where they are parapatric relative to where they are allopatric. We examined genetic divergence across 126 amplified fragment length polymorphism (AFLP) markers in a set of 172 individuals sampled from both allopatric and parapatric populations of the two species. Our analyses demonstrated that AFLP divergence was much greater between the species when comparisons were made between parapatric populations than between allopatric populations. We suggest that selection in parapatry may have largely contributed to this increased divergence
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Original languageEnglish
Pages (from-to)1019-1029
Number of pages11
JournalEcology and Evolution
Volume4
Issue number7
Early online date3 Mar 2014
DOIs
Publication statusPublished - Apr 2014

    Research areas

  • Abies chensiensis, Abies fargesii, Allopatry, Genetic divergence, Natural selection, Parapatry

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