Widely distributed and regionally isolated! Drivers of genetic structure in Gammarus fossarum in a human-impacted landscape.

ABSTRACT:

Background

The actual connectivity between populations of freshwater organisms is largely determined by species biology, but is also influenced by many area- and site-specific factors, such as water pollution and habitat fragmentation. Therefore, the prediction of effective gene flow, even for well-studied organisms, is difficult. The amphipod crustacean Gammarus fossarum is a key invertebrate in freshwater ecosystems and contains many cryptic species. One of these species is the broadly distributed G. fossarum clade 11 (type B). In this study, we tested for factors driving the genetic structure of G. fossarum clade 11 in a human-impacted landscape at local and regional scales. To determine population structure, we analyzed the mitochondrial cytochrome c oxidase 1 (CO1) gene of 2,0

SUBMITTER: Weiss M 

PROVIDER: S-EPMC4966747 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature