Genomic heterogeneity of historical gene flow between two species of newts inferred from transcriptome data.

ABSTRACT: The role of gene flow in species formation is a major unresolved issue in speciation biology. Progress in this area requires information on the long-term patterns of gene flow between diverging species. Here, we used thousands of single-nucleotide polymorphisms derived from transcriptome resequencing and a method modeling the joint frequency spectrum of these polymorphisms to reconstruct patterns of historical gene flow between two Lissotriton newts: L. vulgaris (Lv) and L. montandoni (Lm). We tested several models of divergence including complete isolation and various scenarios of historical gene flow. The model of secondary contact received the highest support. According to this model, the species split from their common ancestor ca. 5.5 million years (MY) ago, evolved in isolation for c

SUBMITTER: Stuglik MT 

PROVIDER: S-EPMC4930998 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature