Fennoscandian phylogeography of the common shrew Sorex araneus. Postglacial recolonisation—combining information from chromosomal variation with mitochondrial DNA data

Lundqvist, Anna-Carin; Alström-Rapaport, Cecilia; Tegelström, Håkan

doi:10.1007/s13364-010-0022-9

Cited by 15 publications

(18 citation statements)

References 55 publications

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“…Second, demographic, geographic, or historical factors might have a stronger effect than chromosomes in structuring the hybrid zones. In agreement with previous studies (Andersson et al 2004; Jadwiszczak et al 2006; Lundqvist et al 2011; Moska et al 2011), we observed a low genetic differentiation among chromosomal races of S. araneus . This low genetic differentiation might be explained by the recentness of chromosome differentiation, as karyotypic evolution was proposed to occur between 15,000 and 7000 years ago in the S. araneus group (Searle 1984; Wójcik 1993).…”

Section: Discussionsupporting

confidence: 93%

“…This low genetic differentiation might be explained by the recentness of chromosome differentiation, as karyotypic evolution was proposed to occur between 15,000 and 7000 years ago in the S. araneus group (Searle 1984; Wójcik 1993). Moreover, chromosome differentiation was hypothesized to be a fast process (Andersson et al 2005; Lundqvist et al 2011), which could be largely independent of the genetic differentiations acquired in allopatry during the last glaciations (e.g., Taberlet et al 1994). In addition, recent common ancestry from a shared glacial refugium may also explain a low genetic differentiation (Jadwiszczak et al 2006; Lundqvist et al 2011).…”

Section: Discussionmentioning

confidence: 99%

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CHROMOSOMAL REARRANGEMENTS DO NOT SEEM TO AFFECT THE GENE FLOW IN HYBRID ZONES BETWEEN KARYOTYPIC RACES OF THE COMMON SHREW (SOREX ARANEUS)

et al. 2011

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Chromosomal rearrangements are proposed to promote genetic differentiation between chromosomally differentiated taxa and therefore promote speciation. Due to their remarkable karyotypic polymorphism, the shrews of the Sorex araneus group were used to investigate the impact of chromosomal rearrangements on gene flow. Five intraspecific chromosomal hybrid zones characterized by different levels of karyotypic complexity were studied using 16 microsatellites markers. We observed low levels of genetic differentiation even in the hybrid zones with the highest karyotypic complexity. No evidence of restricted gene flow between differently rearranged chromosomes was observed. Contrary to what was observed at the interspecific level, the effect of chromosomal rearrangements on gene flow was undetectable within the S. araneus species.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

CHROMOSOMAL REARRANGEMENTS DO NOT SEEM TO AFFECT THE GENE FLOW IN HYBRID ZONES BETWEEN KARYOTYPIC RACES OF THE COMMON SHREW (SOREX ARANEUS)

et al. 2011

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“…This is in contrast to other species where the clade(s) occupying the Scandinavian peninsula were also present in central or eastern Europe [4], [22], [23]. For the field vole, one of the two source populations for the bi-directional Fennoscandian colonization had therefore originated in eastern Europe or western Asia, while the other was confined to the southern part of the Scandinavian peninsula itself.…”

Section: Introductionmentioning

confidence: 66%

Land-Bridge Calibration of Molecular Clocks and the Post-Glacial Colonization of Scandinavia by the Eurasian Field Vole Microtus agrestis

et al. 2014

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Phylogeography interprets molecular genetic variation in a spatial and temporal context. Molecular clocks are frequently used to calibrate phylogeographic analyses, however there is mounting evidence that molecular rates decay over the relevant timescales. It is therefore essential that an appropriate rate is determined, consistent with the temporal scale of the specific analysis. This can be achieved by using temporally spaced data such as ancient DNA or by relating the divergence of lineages directly to contemporaneous external events of known time. Here we calibrate a Eurasian field vole (Microtus agrestis) mitochondrial genealogy from the well-established series of post-glacial geophysical changes that led to the formation of the Baltic Sea and the separation of the Scandinavian peninsula from the central European mainland. The field vole exhibits the common phylogeographic pattern of Scandinavian colonization from both the north and the south, however the southernmost of the two relevant lineages appears to have originated in situ on the Scandinavian peninsula, or possibly in the adjacent island of Zealand, around the close of the Younger Dryas. The mitochondrial substitution rate and the timescale for the genealogy are closely consistent with those obtained with a previous calibration, based on the separation of the British Isles from mainland Europe. However the result here is arguably more certain, given the level of confidence that can be placed in one of the central assumptions of the calibration, that field voles could not survive the last glaciation of the southern part of the Scandinavian peninsula. Furthermore, the similarity between the molecular clock rate estimated here and those obtained by sampling heterochronous (ancient) DNA (including that of a congeneric species) suggest that there is little disparity between the measured genetic divergence and the population divergence that is implicit in our land-bridge calibration.

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“…Although more genetic evidence is needed from haplotypes in Russia and more easterly populations, this does suggest that foxes colonised Scandinavia from two different directions. This easterly and westerly colonisation into Scandinavia is observed in a range of species, including brown bears (Taberlet et al., 1998; Korsten et al., 2009), field voles ( Microtus agrestis ; Jaarola et al., 1999) and common shrews ( Sorex araneus ; Lundqvist et al., 2011), leading to a distinctive suture zone of haplotypes, as would seem evident in our cytb data. CR data are less clear as it shows much greater population differentiation.…”

Section: Discussionmentioning

confidence: 99%

Temporal genetic variation of the red fox, Vulpes vulpes, across western Europe and the British Isles

Edwards

Soulsbury

Statham

et al. 2012

Quaternary Science Reviews

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Quaternary climatic fluctuations have had profound effects on the phylogeographic structure of many species. Classically, species were thought to have become isolated in peninsular refugia, but there is limited evidence that large, non-polar species survived outside traditional refugial areas. We examined the phylogeographic structure of the red fox (Vulpes vulpes), a species that shows high ecological adaptability in the western Palaearctic region. We compared mitochondrial DNA sequences (cytochrome b and control region) from 399 modern and 31 ancient individuals from across Europe. Our objective was to test whether red foxes colonised the British Isles from mainland Europe in the late Pleistocene, or whether there is evidence that they persisted in the region through the Last Glacial Maximum.We found red foxes to show a high degree of phylogeographic structuring across Europe and, consistent with palaeontological and ancient DNA evidence, confirmed via phylogenetic indicators that red foxes were persistent in areas outside peninsular refugia during the last ice age. Bayesian analyses and tests of neutrality indicated population expansion. We conclude that there is evidence that red foxes from the British Isles derived from central European populations that became isolated after the closure of the landbridge with Europe.

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Fennoscandian phylogeography of the common shrew Sorex araneus. Postglacial recolonisation—combining information from chromosomal variation with mitochondrial DNA data

Abstract: We examine mtDNA variation of the common shrew in Fennoscandia to explore the incongruence found in previous studies using chromosomal and mitochondrial markers, aiming to reveal post-glacial recolonisation patterns.

Cited by 15 publications

References 55 publications

CHROMOSOMAL REARRANGEMENTS DO NOT SEEM TO AFFECT THE GENE FLOW IN HYBRID ZONES BETWEEN KARYOTYPIC RACES OF THE COMMON SHREW (SOREX ARANEUS)

CHROMOSOMAL REARRANGEMENTS DO NOT SEEM TO AFFECT THE GENE FLOW IN HYBRID ZONES BETWEEN KARYOTYPIC RACES OF THE COMMON SHREW (SOREX ARANEUS)

Land-Bridge Calibration of Molecular Clocks and the Post-Glacial Colonization of Scandinavia by the Eurasian Field Vole Microtus agrestis

Temporal genetic variation of the red fox, Vulpes vulpes, across western Europe and the British Isles

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