uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Divergence in the face of gene flow: the case of two newts (Amphibia: Salamandridae)
Jagiellonian University, Institute of Environmental Sciences, Kraków.
Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Kraków.
2009 (English)In: Molecular biology and evolution, ISSN 0737-4038, E-ISSN 1537-1719, Vol. 26, no 4, 829-841 p.Article in journal (Refereed) Published
Abstract [en]

Understanding the process of divergence requires the quantitative characterization of patterns of gene flow between diverging taxa. New and powerful coalescent-based methods give insight into these processes in unprecedented details by enabling the reconstruction of the temporal distribution of past gene flow. Here, we use sequence variation at eight nuclear markers and mitochondrial DNA (mtDNA) in multiple populations to study diversity, divergence, and gene flow between two subspecies of a salamander, the smooth newt (Lissotriton vulgaris kosswigi and Lissotriton vulgaris vulgaris) in Turkey. The ranges of both subspecies encompass mainly the areas of this important glacial refugial area. Populations in refugia where species have been present for a long time and differentiated in situ should better preserve the record of past gene flow than young populations in postglacial expansion areas. Sequence diversity in both subspecies was substantial (nuclear πsil = 0.69% and 1.31%). We detected long-term demographic stability in these refugial populations with large effective population sizes (Ne) of the order of 1.5–3 × 105 individuals. Gene trees and the isolation with migration (IM) analysis complemented by tests of nested IM models showed that despite deep, pre-Pleistocene divergence of the studied newts, asymmetric introgression from vulgaristo kosswigi has occurred, with signatures of recent gene flow in mtDNA and an anonymous nuclear marker, and evidence for more ancient introgression in nuclear introns. The distribution of migration times raises the intriguing possibility that even the initial divergence may have occurred in the face of gene flow.

Place, publisher, year, edition, pages
2009. Vol. 26, no 4, 829-841 p.
National Category
Evolutionary Biology
URN: urn:nbn:se:uu:diva-238106DOI: 10.1093/molbev/msp004OAI: oai:DiVA.org:uu-238106DiVA: diva2:770049
Available from: 2014-12-09 Created: 2014-12-09 Last updated: 2015-08-06Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Nadachowska, Krystyna
In the same journal
Molecular biology and evolution
Evolutionary Biology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 177 hits
ReferencesLink to record
Permanent link

Direct link