Extensive unidirectional introgression between two salamander lineages of ancient divergence and its evolutionary implications.

ABSTRACT: Hybridization and introgression, contrary to previous beliefs, are now considered to be widespread processes even among animal species. Nonetheless, the range of their possible outcomes and roles in moulding biodiversity patterns are still far from being fully appraised. Here we investigated the pattern of hybridization and introgression between Salamandrina perspicillata and S. terdigitata, two salamanders endemic to the Italian peninsula. Using a set of diagnostic or differentiated genetic markers (9 nuclear and 1 mitochondrial), we documented extensive unidirectional introgression of S. terdigitata alleles into the S. perspicillata gene pool in central Italy, indicating that barriers against hybridization were permeable when they came into secondary contact, and despite their ancient di

SUBMITTER: Canestrelli D 

PROVIDER: S-EPMC5377473 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature