Shared and Unique Patterns of Genomic Differentiation and Introgression Between Japanese Stickleback Species Across Three Sympatric Sites.

ABSTRACT: Hybridization and introgression frequently occur even between distantly related species. A central question in speciation research is which genomic regions act as barriers to gene flow and how genome-wide differentiation persists despite hybridization between species. Ecological divergence is well known to promote genomic differentiation, especially during the early stages of speciation. However, the extent to which ecological divergence contributes to genomic divergence and the restriction of gene flow between more strongly isolated species, such as those exhibiting intrinsic hybrid incompatibilities, remains relatively unclear. One promising approach is to compare genomic differentiation and introgression patterns between sympatric sites of ecologically divergent distantly related specie

SUBMITTER: Okude G 

PROVIDER: S-EPMC12821563 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature