Genetic and morphological divergence at a biogeographic break in the beach-dwelling brooder Excirolana hirsuticauda Menzies (Crustacea, Peracarida).

ABSTRACT:

Background

There is a biogeographic break located at 30°S in the southeast Pacific, in a coastal area of strong environmental discontinuities. Several marine benthic taxa with restricted dispersal have a coincident phylogeographic break at 30°S, indicating that genetic structure is moulded by life history traits that limit gene flow and thereby promote divergence and speciation. In order to evaluate intraspecific divergence at this biogeographic break, we investigated the genetic and morphological variation of the directly developing beach isopod Excirolana hirsuticauda along 1900 km of the southeast Pacific coast, across 30°S.

Results

The COI sequences and microsatellite data both identified a strong discontinuity between populations of E. hirsuticauda to the north and sout

SUBMITTER: Haye PA 

PROVIDER: S-EPMC6560899 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature