Phylogeographic history of flat periwinkles, Littorina fabalis and L. obtusata.

ABSTRACT:

Background

The flat periwinkles, Littorina fabalis and L. obtusata, are two sister species widely distributed throughout the Northern Atlantic shores with high potential to inform us about the process of ecological speciation in the intertidal. However, whether gene flow has occurred during their divergence is still a matter of debate. A comprehensive assessment of the genetic diversity of these species is also lacking and their main glacial refugia and dispersal barriers remain largely unknown. In order to fill these gaps, we sequenced two mitochondrial genes and two nuclear fragments to perform a phylogeographic analysis of flat periwinkles across their distribution range.

Results

We identified two main clades largely composed by species-specific haplotypes corresponding t

SUBMITTER: Sotelo G 

PROVIDER: S-EPMC7011314 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature