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Marková S, Horníková M, Lanier HC, Henttonen H, Searle JB, Weider LJ, Kotlík P. High genomic diversity in the bank vole at the northern apex of a range expansion: The role of multiple colonizations and end-glacial refugia. Mol Ecol 2020; 29:1730-1744. [PMID: 32248595 DOI: 10.1111/mec.15427] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 03/10/2020] [Accepted: 03/25/2020] [Indexed: 01/08/2023]
Abstract
The history of repeated northern glacial cycling and southern climatic stability has long dominated explanations for how genetic diversity is distributed within temperate species in Eurasia and North America. However, growing evidence indicates the importance of cryptic refugia for northern colonization dynamics. An important geographic region to assess this is Fennoscandia, where recolonization at the end of the last glaciation was restricted to specific routes and temporal windows. We used genomic data to analyse genetic diversity and colonization history of the bank vole (Myodes glareolus) throughout Europe (>800 samples) with Fennoscandia as the northern apex. We inferred that bank voles colonized Fennoscandia multiple times by two different routes; with three separate colonizations via a southern land-bridge route deriving from a "Carpathian" glacial refugium and one via a north-eastern route from an "Eastern" glacial refugium near the Ural Mountains. Clustering of genome-wide SNPs revealed high diversity in Fennoscandia, with eight genomic clusters: three of Carpathian origin and five Eastern. Time estimates revealed that the first of the Carpathian colonizations occurred before the Younger Dryas (YD), meaning that the first colonists survived the YD in Fennoscandia. Results also indicated that introgression between bank and northern red-backed voles (Myodes rutilus) took place in Fennoscandia just after end-glacial colonization. Therefore, multiple colonizations from the same and different cryptic refugia, temporal and spatial separations and interspecific introgression have shaped bank vole genetic variability in Fennoscandia. Together, these processes drive high genetic diversity at the apex of the northern expansion in this emerging model species.
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Affiliation(s)
- Silvia Marková
- Laboratory of Molecular Ecology, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Liběchov, Czech Republic
| | - Michaela Horníková
- Laboratory of Molecular Ecology, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Liběchov, Czech Republic.,Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Hayley C Lanier
- Department of Biology, Program in Ecology & Evolutionary Biology, University of Oklahoma, Norman, OK, USA.,Sam Noble Museum, University of Oklahoma, Norman, OK, USA
| | | | - Jeremy B Searle
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, USA
| | - Lawrence J Weider
- Department of Biology, Program in Ecology & Evolutionary Biology, University of Oklahoma, Norman, OK, USA
| | - Petr Kotlík
- Laboratory of Molecular Ecology, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Liběchov, Czech Republic
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Ling J, Smura T, Tamarit D, Huitu O, Voutilainen L, Henttonen H, Vaheri A, Vapalahti O, Sironen T. Evolution and postglacial colonization of Seewis hantavirus with Sorex araneus in Finland. INFECTION GENETICS AND EVOLUTION 2017; 57:88-97. [PMID: 29133028 DOI: 10.1016/j.meegid.2017.11.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 10/15/2017] [Accepted: 11/09/2017] [Indexed: 12/11/2022]
Abstract
Hantaviruses have co-existed with their hosts for millions of years. Seewis virus (SWSV), a soricomorph-borne hantavirus, is widespread in Eurasia, ranging from Central Siberia to Western Europe. To gain insight into the phylogeography and evolutionary history of SWSV in Finland, lung tissue samples of 225 common shrews (Sorex araneus) trapped from different parts of Finland were screened for the presence of SWSV RNA. Forty-two of the samples were positive. Partial small (S), medium (M) and large (L) segments of the virus were sequenced, and analyzed together with all SWSV sequences available in Genbank. The phylogenetic analysis of the partial S-segment sequences suggested that all Finnish SWSV strains shared their most recent common ancestor with the Eastern European strains, while the L-segment suggested multiple introductions. The difference between the L- and S-segment phylogenies implied that reassortment events play a role in the evolution of SWSV. Of the Finnish strains, variants from Eastern Finland occupied the root position in the phylogeny, and had the highest genetic diversity, supporting the hypothesis that SWSV reached Finland first form the east. During the spread in Finland, the virus has formed three separate lineages, identified here by correlation analysis of genetic versus geographic distance combined with median-joining network analysis. These results support the hypothesis that Finnish SWSV recolonized Finland with its host, the common shrew, from east after the last ice age 12,000-8000years ago, and then subsequently spread along emerging land bridges towards west or north with the migration and population expansion of its host.
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Affiliation(s)
- Jiaxin Ling
- University of Helsinki, Medicum, Department of Virology, Helsinki, Finland.
| | - Teemu Smura
- University of Helsinki, Medicum, Department of Virology, Helsinki, Finland
| | - Daniel Tamarit
- Uppsala University, Biomedical Centre, Science for Life Laboratory, Cell and Molecular Biology, Department of Molecular Evolution, Sweden
| | - Otso Huitu
- Forest and Animal Ecology, Natural Resources Institute Finland, Tampere, Finland
| | - Liina Voutilainen
- University of Helsinki, Medicum, Department of Virology, Helsinki, Finland; Forest and Animal Ecology, Natural Resources Institute Finland, Helsinki, Finland
| | - Heikki Henttonen
- Forest and Animal Ecology, Natural Resources Institute Finland, Helsinki, Finland
| | - Antti Vaheri
- University of Helsinki, Medicum, Department of Virology, Helsinki, Finland
| | - Olli Vapalahti
- University of Helsinki, Medicum, Department of Virology, Helsinki, Finland; University of Helsinki, Department of Veterinary Biosciences, Helsinki, Finland; Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Tarja Sironen
- University of Helsinki, Medicum, Department of Virology, Helsinki, Finland; University of Helsinki, Department of Veterinary Biosciences, Helsinki, Finland
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Volleth M, Heller KG, Yong HS, Müller S. Karyotype evolution in the horseshoe bat Rhinolophus sedulus by whole-arm reciprocal translocation (WART). Cytogenet Genome Res 2014; 143:241-50. [PMID: 25139053 DOI: 10.1159/000365824] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2014] [Indexed: 11/19/2022] Open
Abstract
Robertsonian (centric) fusion or fission is one of the predominant modes of chromosomal rearrangement in karyotype evolution among mammals. However, in karyotypes composed of only bi-armed chromosomes, creation of new chromosomal arm combinations in one step is possible only via whole-arm reciprocal translocation (WART). Although this type of rearrangement has often been proposed to play an important role in chromosomal evolution, direct observations of WARTs remained rare, and, in most cases, were found in hybrids of chromosomal races in the genera Mus and Sorex. For the first time, we present the karyotype of the horseshoe bat species Rhinolophus sedulus (2n = 28, FNa = 52), where a WART between 2 metacentric autosomes was detected by G-banding and confirmed by FISH with painting probes of the vespertilionid bat Myotis myotis. Among the 6 specimens analyzed, 2 showed the heterozygous condition of the WART, 1 showed the presumed ancestral, and 3 specimens showed the derived homozygous state. As the existence of a hybrid zone at the sampling locality is thought to be rather improbable, the WART may indicate ongoing karyotype evolution in this taxon.
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Affiliation(s)
- Marianne Volleth
- Department of Human Genetics, Otto von Guericke University, Magdeburg, Germany
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Moska M, Wierzbicki H, Macierzyńska A, Strzała T, Maślak R, Warchałowski M. A microsatellite study in the Łęgucki Młyn/Popielno hybrid zone reveals no genetic differentiation between two chromosome races of the common shrew (Sorex araneus). ACTA THERIOLOGICA 2011; 56:117-122. [PMID: 21475705 PMCID: PMC3061409 DOI: 10.1007/s13364-011-0029-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2010] [Accepted: 11/08/2010] [Indexed: 10/26/2022]
Abstract
This study investigated a chromosome hybrid zone between two chromosomal races of the common shrew (Sorex araneus). Gene flow and genetic structure of the hybrid zone, located in the northeast of Poland, were studied using seven polymorphic autosomal microsatellite loci (L9, L14, L33, L45, L67, L68, L97) and a Y-linked microsatellite locus (L8Y). Seventy-five animals (46 of the Łęgucki Młyn race and 29 of the Popielno race) from nine different localities were examined and the data were analyzed using hierarchical AMOVA and F-statistic. The studied microsatellite loci and races (divided into nine geographical populations) were characterized by observed heterozygosity (H(O)), expected heterozygosities within (H(S)), and between (H(T)) populations, inbreeding coefficient (F(IS)), fixation index (F(ST)), and average allelic richness (A). We found that genetic structuring within and between the two chromosome races were weak and non-significant. This finding and unconstrained gene flow between the races indicates a high level of migration within the Łęgucki Młyn/Popielno hybrid zone, suggesting that evolutionarily important genetic structuring does not occur in interracial zones where races which are not genetically distinct come into contact.
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Affiliation(s)
- Magdalena Moska
- Department of Genetics and Animal Breeding, Wrocław University of Environmental and Life Sciences, Kożuchowska 7, 51-631 Wrocław, Poland
| | - Heliodor Wierzbicki
- Department of Genetics and Animal Breeding, Wrocław University of Environmental and Life Sciences, Kożuchowska 7, 51-631 Wrocław, Poland
| | - Anna Macierzyńska
- Department of Genetics and Animal Breeding, Wrocław University of Environmental and Life Sciences, Kożuchowska 7, 51-631 Wrocław, Poland
| | - Tomasz Strzała
- Department of Genetics and Animal Breeding, Wrocław University of Environmental and Life Sciences, Kożuchowska 7, 51-631 Wrocław, Poland
| | - Robert Maślak
- Institute of Zoology, Wrocław University, Sienkiewicza 21, 50-335 Wrocław, Poland
| | - Marcin Warchałowski
- Department of Genetics and Animal Breeding, Wrocław University of Environmental and Life Sciences, Kożuchowska 7, 51-631 Wrocław, Poland
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Fennoscandian phylogeography of the common shrew Sorex araneus. Postglacial recolonisation—combining information from chromosomal variation with mitochondrial DNA data. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s13364-010-0022-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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STÅHLBERG DAVID, HEDRÉN MIKAEL. Evolutionary history of the Dactylorhiza maculata polyploid complex (Orchidaceae). Biol J Linn Soc Lond 2010. [DOI: 10.1111/j.1095-8312.2010.01505.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Fertility assessment in hybrids between monobrachially homologous Rb races of the house mouse from the island of Madeira: implications for modes of chromosomal evolution. Heredity (Edinb) 2010; 106:348-56. [PMID: 20531448 DOI: 10.1038/hdy.2010.74] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The speciation model of divergence by monobrachially homologous fusions (that is, with one arm in common) benefits from a wide conceptual acceptance, because heterozygotes between populations carrying such fusions suffer from high levels of meiotic dysfunction. The same meiotic configurations can also be generated by WART (whole-arm reciprocal translocation), rearrangements that are known to occur in mammals. Estimating the disadvantage of heterozygotes carrying monobrachially homologous fusions is required to evaluate the relevance of this mode of chromosomal evolution in diversification and speciation. House mice are an excellent study models because chromosomal races exist carrying monobrachially homologous fusions, and WARTs have been documented in this species. The fertility of heterozygote mice carrying the smallest number of monobrachially homologous fusions (that is, a chain of four chromosomes, C4) was investigated in laboratory-bred hybrids between two parapatric chromosomal races from the island of Madeira. Meiotic nondisjunction analyses and histological sections of testes showed that aneuploidy (16.7%) and germ cell death (50.9%) rates reached significantly higher mean values in hybrids than in homozygotes. In females, however, the histological analysis of ovarian follicle parameters revealed no significant differences between hybrid and homozygous individuals. Overall, the reproductive assays indicated that these C4-carrying hybrids were not sterile but showed an approximately 50% decrease in fertility compared to homozygous parental mice. Implications for modes of chromosomal evolution involving monobrachially homologous fusions are discussed.
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Whole-arm reciprocal translocation in a hybrid population of Sorex araneus. Chromosome Res 2009; 17:451-4. [DOI: 10.1007/s10577-009-9036-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2008] [Revised: 02/12/2009] [Accepted: 02/12/2009] [Indexed: 10/21/2022]
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9
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Orlov VN, Kozlovskii AI, Balakirev AE, Borisov YM. Fixation of metacentric chromosomes in eastern Europe populations of the common shrew Sorex araneus L. RUSS J GENET+ 2008. [DOI: 10.1134/s1022795408050013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Mao X, Nie W, Wang J, Su W, Feng Q, Wang Y, Dobigny G, Yang F. Comparative cytogenetics of bats (Chiroptera): the prevalence of Robertsonian translocations limits the power of chromosomal characters in resolving interfamily phylogenetic relationships. Chromosome Res 2008; 16:155-70. [PMID: 18293110 DOI: 10.1007/s10577-007-1206-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Although the monophyly of Chiroptera is well supported by many independent studies, higher-level systematics, e.g. the monophyly of microbats, remains disputed by morphological and molecular studies. Chromosomal rearrangements, as one type of rare genomic changes, have become increasingly popular in phylogenetic studies as alternatives to molecular and other morphological characters. Here, the representatives of families Megadermatidae and Emballonuridae are studied by comparative chromosome painting for the first time. The results have been integrated into published comparative maps, providing an opportunity to assess genome-wide chromosomal homologies between the representatives of eight bat families. Our results further substantiate the wide occurrence of Robertsonian translocations in bats, with the possible involvement of whole-arm reciprocal translocations (WARTs). In order to search for valid cytogenetic signature(s) for each family and superfamily, evolutionary chromosomal rearrangements identified by chromosomal painting and/or banding comparison are subjected to two independent analyses: (1) a cladistic analysis using parsimony and (2) the mapping of these chromosomal changes onto the molecularly defined phylogenetic tree available from the literature. Both analyses clearly indicate the prevalence of homoplasic events that reduce the reliability of chromosomal characters for resolving interfamily relationships in bats.
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Affiliation(s)
- Xiuguang Mao
- Kunming Institute of Zoology, Kunming, Yunnan, People's Republic of China
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11
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12
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FREDGA KARL, NARAIN YOLANDA. The complex hybrid zone between the Abisko and Sidensjö chromosome races of Sorex araneus in Sweden. Biol J Linn Soc Lond 2008. [DOI: 10.1111/j.1095-8312.2000.tb00211.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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JAAROLA MAARIT, TEGELSTRÖM HAKAN, FREDGA KARL. Colonization history in Fennoscandian rodents. Biol J Linn Soc Lond 2008. [DOI: 10.1111/j.1095-8312.1999.tb01161.x] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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14
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Reconstruction of the postglacial colonization of Sorex araneus into northern Scandinavia based on karyotype studies, and the subdivision of the Abisko race into three. RUSSIAN JOURNAL OF THERIOLOGY 2007. [DOI: 10.15298/rusjtheriol.06.1.12] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Phylogeographic differentiation in Sorex araneus: morphology in relation to geography and karyotype. RUSSIAN JOURNAL OF THERIOLOGY 2007. [DOI: 10.15298/rusjtheriol.06.1.11] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Veyrunes F, Watson J, Robinson TJ, Britton-Davidian J. Accumulation of rare sex chromosome rearrangements in the African pygmy mouse, Mus (Nannomys) minutoides: a whole-arm reciprocal translocation (WART) involving an X-autosome fusion. Chromosome Res 2007; 15:223-30. [PMID: 17285252 DOI: 10.1007/s10577-006-1116-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2006] [Revised: 11/28/2006] [Accepted: 11/28/2006] [Indexed: 01/05/2023]
Abstract
Although sex chromosomes are generally the most conserved elements of the mammalian karyotype, those of African pygmy mice show three extraordinary deviations from the norm: (a) asynaptic sex chromosomes, (b) multiple sex-autosome fusions, and (c) modifications of sex determination in some populations/species. In this study we identified, in two sex-reversed females of Mus (Nannomys) minutoides, a fourth rare sex chromosome change: a spontaneous whole-arm reciprocal translocation (WART) between an autosomal Robertsonian pair Rb(13.16) and the sex-autosome fusion Rb(X.1). This represents one of the very few reported cases of WARTs in natura within mammals, and is the first one to involve sex chromosomes. Hence, this finding offers new insights into the mechanisms of chromosomal differentiation in African pygmy mice, as WARTs may have contributed to the extensive diversity not only of autosomal Robertsonian fusions, but also of sex-autosome translocations. More widely, these results provide additional support to previous studies on the house mouse and the common shrew which indirectly inferred the role of WARTs in their karyotypic evolution, and may even help to understand how the fascinating 10 sex chromosome chain of the platypus might have evolved. This accumulation of rare sex chromosome changes in single specimens is, to our knowledge, exceptional among mammals.
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Affiliation(s)
- Frédéric Veyrunes
- Institut des Sciences de l'Evolution (UMR5554), Génétique & Environnement, Université Montpellier II, Montpellier, France.
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Microsatellite investigation of roe deer (Capreolus capreolus) in Scandinavia reveals genetic differentiation of a Baltic Sea Island population. EUR J WILDLIFE RES 2006. [DOI: 10.1007/s10344-006-0047-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Andersson AC, Alström-Rapaport C, Fredga K. Lack of mitochondrial DNA divergence between chromosome races of the common shrew, Sorex araneus, in Sweden. Implications for interpreting chromosomal evolution and colonization history. Mol Ecol 2005; 14:2703-16. [PMID: 16029472 DOI: 10.1111/j.1365-294x.2005.02584.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The common shrew, Sorex araneus, has one of the most variable karyotypes among mammals, displaying numerous chromosome races throughout its distribution. The six chromosome races present in Sweden can be categorized in two different karyotypic groups, the west and north European karyotypic groups (western and northern). Three races belonging to the western group are considered to have arisen through whole arm reciprocal translocations (WARTs). Race formation through this process requires a bottleneck event. In the present study we sequenced a part of the mitochondrial DNA (mtDNA) genome to investigate molecular differences between the chromosome races in Sweden. We found no mtDNA differentiation between the mainland chromosome races or the karyotypic groups. Genetic variation is as large between populations within a race as between populations among the races or karyotypic groups, suggesting that the karyotypic groups might have originated in a common glacial refugium. The noticeable exception is the Oland race, which shows higher mtDNA diversity compared to the other Swedish races, indicating a divergent origin difficult to explain. Mitochondrial DNA variation in Sweden suggests that most haplotypes arose in situ and that the populations has undergone a rapid size expansion. Altogether, the mtDNA data are in agreement with the WART hypothesis, which still holds as the most plausible variant of karyotype evolution for three of the chromosome races of the common shrew in Sweden.
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Affiliation(s)
- Anna-Carin Andersson
- Evolutionary Functional Genomics, Department of Evolution, Genomics and Systematics, EBC, Uppsala University, Norbyvägen 18 D, SE-752 36 Uppsala, Sweden.
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Andersson AC, Narain Y, Tegelström H, Fredga K. No apparent reduction of gene flow in a hybrid zone between the West and North European karyotypic groups of the common shrew, Sorex araneus. Mol Ecol 2004; 13:1205-15. [PMID: 15078456 DOI: 10.1111/j.1365-294x.2004.02146.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The common shrew, Sorex araneus, exhibits an unusually high level of karyotypic variation. Populations with identical or similar karyotypes are defined as chromosome races, which are, in turn, grouped into larger evolutionary units, karyotypic groups. Using six microsatellite markers, we investigated the genetic structure of a hybrid zone between the Sidensjö and Abisko chromosome races, representatives of two distinct karyotypic groups believed to have been separated during the last glacial maximum, the West European karyotypic group (western group) and the North European karyotypic group (northern group), respectively. Significant FST values among populations suggest some weak genetic structure. All hierarchical levels show similar levels of genetic differentiation, equivalent to levels of genetic structure in several intraracial studies of common shrew populations from central Europe. Notably, genetic differentiation was of the same order of magnitude between and within karyotypic groups. Although the genetic differentiation was weak, the correlation between genetic and geographical distance was positive and significant, suggesting that the genetic variation observed between populations is a function of geographical distance rather than racial origin. Hence, considerable chromosomal differences do not seem to prevent extensive gene flow.
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Affiliation(s)
- A-C Andersson
- Department of Conservation Biology and Genetics, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18 D, SE-752 36 Uppsala, Sweden.
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Narain Y, Fredga K. A Hybrid Zone Between the Hällefors and Uppsala Chromosome Races of Sorex Araneus in Central Sweden. Hereditas 2004. [DOI: 10.1111/j.1601-5223.1996.00137.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Zima J, Fedyk S, Fredga K, Hausser J, Mishta A, Searle JB, Volobouev VT, Wójcik JM. The List of the Chromosome Races of the Common Shrew (Sorex Araneus). Hereditas 2004. [DOI: 10.1111/j.1601-5223.1996.00097.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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22
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Ratkiewicz M, Fedyk S, Banaszek A, Gielly L, Chetnicki W, Jadwiszczak K, Taberlet P. The evolutionary history of the two karyotypic groups of the common shrew, Sorex araneus, in Poland. Heredity (Edinb) 2002; 88:235-42. [PMID: 11920129 DOI: 10.1038/sj.hdy.6800032] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2001] [Accepted: 10/24/2001] [Indexed: 11/08/2022] Open
Abstract
Genetic variability within and among two karyotypic groups and five chromosome races of the common shrew (Sorex araneus) in Poland was assayed by sequencing a 1023 bp part of the cytochrome b gene (mtDNA) from 28 individuals. Thirty-four variable positions defined 21 distinct haplotypes with a maximum sequence divergence of 0.88%. No significant differentiation in the cytochrome b gene between Western and Eastern Karyotypic groups was found. Haplotype diversity estimates within the races and groups sampled were high (h = 0.800-0.928), while nucleotide diversity estimates were low (pi = 0.0034-0.0053). The distribution of pairwise nucleotide differences fits well with expectations of a "sudden expansion" model. High haplotype diversity was accompanied by relatively high expected heterozygosity (H(E)) values in nuclear genes (calculated over 47 enzyme loci: H(E) = 0.031 - 0.049), giving no evidence for a recent bottleneck after the process of post-Pleistocene recolonization of Poland by the shrews. Thus, for S. araneus chromosome races in Poland, the data on the cytochrome b gene variability support the hypothesis assuming the Robertsonian fusions having spread into an ancestral acrocentric distribution.
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Affiliation(s)
- M Ratkiewicz
- Institute of Biology, University of Białystok, Swierkowa 20 B, 15-950 Białystok, Poland.
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Berglund AB, Westerbergh A. Two postglacial immigration lineages of the polyploid Cerastium alpinum (Caryophyllaceae). Hereditas 2002; 134:171-83. [PMID: 11732854 DOI: 10.1111/j.1601-5223.2001.00171.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
The plant cover of Fennoscandia is young because of the recent glaciation. This study covers the early stages of diversification and the genetic consequences of postglacial migration of a hermaphroditic polyploid plant. Cerastium alpinum. It has a continuous distribution in the alpine region, where it grows on alpine heaths and serpentine soils that are rich in heavy metals. Within the boreal forest C. alpinum has a scattered distribution on serpentine, dolomite and steep slopes. Plants from 31 populations in Norway, Sweden and Finland were subjected to enzyme electrophoresis. Analyses of the enzyme phenotypes suggest that C. alpinum has colonized Fennoscandia through two postglacial immigration events resulting in a southeastern and a southwestern lineage. These two lineages seem to meet in a hybrid zone in northern Sweden. Large genetic differences were found among most populations in both the southeastern and the southwestern lineages. This suggests that the populations are effectively isolated from each other.
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Affiliation(s)
- A B Berglund
- Department of Natural and Environmental Sciences, Mid Sweden University, Härnösand.
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Wyttenbach A, Narain Y, Fredga K. Genetic structuring and gene flow in a hybrid zone between two chromosome races of the common shrew (Sorex araneus, Insectivora) revealed by microsatellites. Heredity (Edinb) 1999. [DOI: 10.1038/sj.hdy.6884520] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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