Global molecular phylogeography reveals persistent Arctic circumpolar isolation in a marine planktonic protist.

ABSTRACT: The high-latitude planktonic foraminifera have proved to be particularly useful model organisms for the study of global patterns of vicariance and gene flow in the oceans. Such studies demonstrate that gene flow can occur over enormous distances in the pelagic marine environment leading to cosmopolitanism but also that there are ecological and geographical barriers to gene flow producing biogeographic structure. Here, we have undertaken a comprehensive global study of genetic diversity within a marine protist species, the high-latitude planktonic foraminiferan Neogloboquadrina pachyderma. We present extensive new data sets from the North Pacific and Arctic Oceans that, in combination with our earlier data from the North Atlantic and Southern Oceans, allow us to determine the global phyloge

SUBMITTER: Darling KF 

PROVIDER: S-EPMC1829254 | biostudies-literature | 2007 Mar

REPOSITORIES: biostudies-literature