Gone with the currents: lack of genetic differentiation at the circum-continental scale in the Antarctic krill Euphausia superba.

ABSTRACT:

Background

Southern Ocean fauna represent a significant amount of global biodiversity, whose origin may be linked to glacial cycles determining local extinction/eradication with ice advance, survival of refugee populations and post-glacial re-colonization. This pattern implies high potential for differentiation in benthic shelf species with limited dispersal, yet consequences for pelagic organisms are less clear. The present study investigates levels of genetic variation and population structure of the Antarctic krill Euphausia superba using mitochondrial DNA and EST-linked microsatellite markers for an unprecedentedly comprehensive sampling of its populations over a circum-Antarctic range.

Results

MtDNA (ND1) sequences and EST-linked microsatellite markers indicated no clea

SUBMITTER: Bortolotto E 

PROVIDER: S-EPMC3095564 | biostudies-literature | 2011 Apr

REPOSITORIES: biostudies-literature