Glacial vicariance drives phylogeographic diversification in the amphi-boreal kelp Saccharina latissima.

ABSTRACT: Glacial vicariance is regarded as one of the most prevalent drivers of phylogeographic structure and speciation among high-latitude organisms, but direct links between ice advances and range fragmentation have been more difficult to establish in marine than in terrestrial systems. Here we investigate the evolution of largely disjunct (and potentially reproductively isolated) phylogeographic lineages within the amphi-boreal kelp Saccharina latissima s. l. Using molecular data (COI, microsatellites) we confirm that S. latissima comprises also the NE Pacific S. cichorioides complex and is composed of divergent lineages with limited range overlap and genetic admixture. Only a few genetic hybrids were detected throughout a Canadian Arctic/NW Greenland contact zone. The degree of genetic differe

SUBMITTER: Neiva J 

PROVIDER: S-EPMC5773594 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature