Shallow phylogeographic structuring of Vimba vimba across Europe suggests two distinct refugia during the last glaciation |
| |
Authors: | B Hänfling C Dümpelmann N G Bogutskaya R Brandl M Brändle |
| |
Institution: | 1. Department of Biological Sciences, University of Hull, Cottingham Road, Hull HU6 7RX, U.K.;2. Systematic Zoology, Faculty of Biology, Philipps Universit?t Marburg, Karl‐von‐Frisch Strasse 8, 35032 Marburg, Germany;3. Zoological Institute, Russian Academy of Sciences, Universitetskaya Embankment 1, 199034 St. Petersburg, Russia;4. Animal Ecology, Department of Ecology, Faculty of Biology, Philipps Universit?t Marburg, Karl‐von‐Frisch Strasse 8, 35032 Marburg, Germany |
| |
Abstract: | Genetic variation and geographical structuring of vimba Vimba vimba were analysed across 26 sites (80 individuals) by means of mtDNA sequences (cyt b gene, mitochondrial control region) to localize hypothesized glacial refugia and to reconstruct postglacial recoloniation routes. Although genetic diversity among sequenced individuals was low, a combined analysis of the two sequenced fragments revealed a western (central and northern Europe: Danube, Elbe and lakes of Sweden) and an eastern clade (eastern Europe: Dnieper–South Bug, Don, Neman). Furthermore, a number of divergent ancestral haplotypes distributed around the Black and Caspian Seas became apparent. Mismatch analyses supported a sudden expansion model for the populations of the western clade between 50 and 10 000 bp . Overall, the study provides strong evidence for a northward and westward expansion of V. vimba from two refugial regions located in the Danubian drainage and the northern Pontic regions respectively. |
| |
Keywords: | freshwater fish phylogeography Pleistocene recolonization refugia Vimba vimba |
|
|