Phylogeography of higher Diptera in glacial and postglacial grasslands in western North America.

ABSTRACT:

Background

Pleistocene glaciations have had an important impact on the species distribution and community composition of the North American biota. Species survived these glacial cycles south of the ice sheets and/or in other refugia, such as Beringia. In this study, we assessed, using mitochondrial DNA from three Diptera species, whether flies currently found in Beringian grasslands (1) survived glaciation as disjunct populations in Beringia and in the southern refugium; (2) dispersed northward postglacially from the southern refugium; or (3) arose by a combination of the two. Samples were collected in grasslands in western Canada: Prairies in Alberta and Manitoba; the Peace River region (Alberta); and the southern Yukon Territory. We sequenced two gene regions (658 bp of cytochrom

SUBMITTER: Solecki AM 

PROVIDER: S-EPMC6923875 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature