uu.seUppsala universitets publikationer
Ändra sökning
Avgränsa sökresultatet
1 - 7 av 7
RefereraExporteraLänk till träfflistan
Permanent länk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Träffar per sida
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sortering
  • Standard (Relevans)
  • Författare A-Ö
  • Författare Ö-A
  • Titel A-Ö
  • Titel Ö-A
  • Publikationstyp A-Ö
  • Publikationstyp Ö-A
  • Äldst först
  • Nyast först
  • Skapad (Äldst först)
  • Skapad (Nyast först)
  • Senast uppdaterad (Äldst först)
  • Senast uppdaterad (Nyast först)
  • Disputationsdatum (tidigaste först)
  • Disputationsdatum (senaste först)
  • Standard (Relevans)
  • Författare A-Ö
  • Författare Ö-A
  • Titel A-Ö
  • Titel Ö-A
  • Publikationstyp A-Ö
  • Publikationstyp Ö-A
  • Äldst först
  • Nyast först
  • Skapad (Äldst först)
  • Skapad (Nyast först)
  • Senast uppdaterad (Äldst först)
  • Senast uppdaterad (Nyast först)
  • Disputationsdatum (tidigaste först)
  • Disputationsdatum (senaste först)
Markera
Maxantalet träffar du kan exportera från sökgränssnittet är 250. Vid större uttag använd dig av utsökningar.
  • 1.
    Andersson, Anna-Carin
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för ekologi och evolution, Naturvårdsbiologi och genetik.
    Lack of mitochondrial DNA structure between chromosome races of the common shrew, Sorex araneus, in Sweden. Implications for chromosomal evolution.Manuskript (Övrigt vetenskapligt)
  • 2.
    Andersson, Anna-Carin
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för ekologi och evolution, Naturvårdsbiologi och genetik.
    Postglacial Population History of the Common Shrew (Sorex araneus) in Fennoscandia: Molekylära studier av återkolonisation, könsbundet genflöde och kromosomrasbildning.2004Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    The common shrew, Sorex araneus, has one of the most variable karyotypes among mammals, displaying numerous chromosomes races throughout its distribution, which can be categorized into different karyotypic groups. The objective of this thesis was to examine the postglacial population history of Fennoscandian common shrews using autosomal microsatellites, mitochondrial DNA (mtDNA) and a Y chromosome specific microsatellite (L8Y).

    Autosomal microsatellites and mtDNA revealed weak genetic structure over a hybrid zone between the karyotypically divergent Northern and Western karyotypic groups. However, the genetic structure displayed by the Y chromosome microsatellite was orders of magnitude higher. Hence, considerable chromosomal differences between the groups do not prevent female gene flow, while male gene flow is reduced (cf. Haldane's rule). Further, the results suggest that the Haldane effect may be caused by the chromosomal differences between the karyotypic groups.

    No mtDNA differentiation was observed either between chromosome races or between the Northern and Western karyotypic groups in Fennoscandia. The combined pattern of karyotypic and mtDNA variation of Fennoscandian common shrews, suggest bi-directional postglacial recolonisation from a single refugium in Europe. The variation of the Y-linked microsatellite supported this conclusion. In contrast, significant mtDNA structure, discordant with the karyotypic variation, revealed that common shrews in southern Finland belong to a different lineage than remaining Fennoscandian regions, implying postglacial recolonisation from a different source.

    MtDNA variation of the chromosome races in Sweden supports the hypothesis that three races of the Western karyotypic group have been formed through whole arm reciprocal translocations (WARTs), as suggested by their mutual karyotypic variation. The variation of the molecular markers supports the theory of rapid karyotypic evolution in the common shrew.

    Delarbeten
    1. No apparent reduction of gene flow in a hybrid zone between the West and North European karyotypic groups of the common shrew, Sorex araneus.
    Öppna denna publikation i ny flik eller fönster >>No apparent reduction of gene flow in a hybrid zone between the West and North European karyotypic groups of the common shrew, Sorex araneus.
    2004 Ingår i: Molecular Ecology, ISSN 1365-294X, Vol. 13, nr 5, s. 1205-1215.Artikel i tidskrift (Refereegranskat) Published
    Identifikatorer
    urn:nbn:se:uu:diva-91849 (URN)
    Tillgänglig från: 2004-05-13 Skapad: 2004-05-13Bibliografiskt granskad
    2. Lack of mitochondrial DNA structure between chromosome races of the common shrew, Sorex araneus, in Sweden. Implications for chromosomal evolution.
    Öppna denna publikation i ny flik eller fönster >>Lack of mitochondrial DNA structure between chromosome races of the common shrew, Sorex araneus, in Sweden. Implications for chromosomal evolution.
    Manuskript (Övrigt vetenskapligt)
    Identifikatorer
    urn:nbn:se:uu:diva-91850 (URN)
    Tillgänglig från: 2004-05-13 Skapad: 2004-05-13 Senast uppdaterad: 2010-01-13Bibliografiskt granskad
    3. Fennoscandian phylogeography of the common shrew Sorex araneus. Postglacial recolonisation-combining information from chromosomal variation with mitochondrial DNA data
    Öppna denna publikation i ny flik eller fönster >>Fennoscandian phylogeography of the common shrew Sorex araneus. Postglacial recolonisation-combining information from chromosomal variation with mitochondrial DNA data
    2011 (Engelska)Ingår i: Acta Theriologica, ISSN 0001-7051, E-ISSN 2190-3743, Vol. 56, nr 2, s. 103-116Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    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. A total of 241 common shrews from 51 localities in Fennoscandia were analysed. This area includes a secondary contact zone between two groups (the Northern group and the Western group) showing distinct karyotypes. All individuals were sequenced for 447 bp of the mitochondrial control region. No significant differentiation in the mtDNA variation was observed between the two major chromosomal groups in Fennoscandia. The star-like shape of the sequence network for the entire study area shows the most common haplotype A as ancestral in all regions but one, in situ formation of most haplotypes and population expansion. The only significant mtDNA structure observed occurs between south Finland and the rest of Fennoscandia. We propose that the Northern and Western group shared a common refugium during the Last Glacial Maximum but recolonised Fennoscandia via two routes. Karyotypic differences between south and north Finland has led researchers to suggest that both regions originate from the same ancestral population east of Finland. The observed divergence of mtDNA variation between these two regions supports this hypothesis.

    Nyckelord
    Control region, Common shrew, Glacial refugia, Colonization history, Chromosome race
    Nationell ämneskategori
    Biologiska vetenskaper
    Identifikatorer
    urn:nbn:se:uu:diva-91851 (URN)10.1007/s13364-010-0022-9 (DOI)000290689600001 ()
    Tillgänglig från: 2004-05-13 Skapad: 2004-05-13 Senast uppdaterad: 2017-12-14Bibliografiskt granskad
    4. Reduced levels of male gene flow in a hybrid zone between the North and West European karyotypic groups of the common shrew, Sorex araneus. Chromosomally based explanation for Haldane's rule?
    Öppna denna publikation i ny flik eller fönster >>Reduced levels of male gene flow in a hybrid zone between the North and West European karyotypic groups of the common shrew, Sorex araneus. Chromosomally based explanation for Haldane's rule?
    Manuskript (Övrigt vetenskapligt)
    Identifikatorer
    urn:nbn:se:uu:diva-91852 (URN)
    Tillgänglig från: 2004-05-13 Skapad: 2004-05-13 Senast uppdaterad: 2010-01-13Bibliografiskt granskad
    5. Y-chromosome microsatellite variation among common shrews (Sorex araneus) in northern Europe.
    Öppna denna publikation i ny flik eller fönster >>Y-chromosome microsatellite variation among common shrews (Sorex araneus) in northern Europe.
    Manuskript (Övrigt vetenskapligt)
    Identifikatorer
    urn:nbn:se:uu:diva-91853 (URN)
    Tillgänglig från: 2004-05-13 Skapad: 2004-05-13 Senast uppdaterad: 2010-01-13Bibliografiskt granskad
  • 3.
    Andersson, Anna-Carin
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för ekologi och evolution, Naturvårdsbiologi och genetik.
    Alström-Rapaport, Cecilia
    Tegelström, Håkan
    Reduced levels of male gene flow in a hybrid zone between the North and West European karyotypic groups of the common shrew, Sorex araneus. Chromosomally based explanation for Haldane's rule?Manuskript (Övrigt vetenskapligt)
  • 4.
    Andersson, Anna-Carin
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för ekologi och evolution, Naturvårdsbiologi och genetik.
    Narain, Yolanda
    Tegelström, Håkan
    Fredga, Karl
    No apparent reduction of gene flow in a hybrid zone between the West and North European karyotypic groups of the common shrew, Sorex araneus.2004Ingår i: Molecular Ecology, ISSN 1365-294X, Vol. 13, nr 5, s. 1205-1215.Artikel i tidskrift (Refereegranskat)
  • 5.
    Andersson, Anna-Carin
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för ekologi och evolution, Naturvårdsbiologi och genetik.
    Utter, Marianne
    Alström-Rapaport, Cecilia
    Tegelström, Håkan
    Y-chromosome microsatellite variation among common shrews (Sorex araneus) in northern Europe.Manuskript (Övrigt vetenskapligt)
  • 6.
    Goropashnaya, Anna V
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och evolution, Naturvårdsbiologi och genetik.
    Fedorov, Vadim B
    Pamilo, Pekka
    Recent speciation in the Formica rufa group ants (Hymenoptera, Formicidae): inference from mitochondrial DNA phylogeny2004Ingår i: Molecular Phylogenetics and Evolution, ISSN 1055-7903, E-ISSN 1095-9513, Vol. 32, nr 1, s. 198-206Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This study examines phylogenetic relationships among six species of the Formica rufa group ants (F. polyctena, F. rufa, F. lugubris, F. paralugubris, F. aquilonia, and F. pratensis). The phylogeny based on a 2051bp fragment of mtDNA including cyt b, tRNASer, and ND1 genes supports the division of the group into three major clusters: one with the species F. polyctena and F. rufa, one with F. aquilonia, F. lugubris, and F. paralugubris, and the third one with F. pratensis. The interspecific divergence estimates (mean 0.98 +/- 0.15% for the main phylogenetic groups) imply that radiation took place during the Pleistocene. Comparison of the divergence estimates among the F. rufa group species with divergence estimates among other closely related species of insects suggests that speciation in the group was relatively fast, and the mitochondrial lineages of F. polyctena and F. rufa have not fully separated. The haplotype tree shows also signs of transfer of mtDNA between species through hybridisation. The distribution of polygyny (multiple queens per nest) along the branches of the tree indicates that the social type characterised by highly polygynous societies and large colonial networks, has originated at least three times. The species F. aquilonia and F. paralugubris that build such large supercolonies, cluster tightly together with very little nucleotide variation, suggesting that this type of social organisation could be a factor promoting speciation in the ants.

  • 7.
    Goropashnaya, Anna V.
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och evolution, Naturvårdsbiologi och genetik.
    Fedorov, Vadim B.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och evolution, Naturvårdsbiologi och genetik.
    Seifert, Bernhard
    Pamilo, Pekka
    Phylogeography and population structure in the ant Formica exsecta (Hymenoptera, Formicidae) across Eurasia as reflected by mitochondrial DNA variation and microsatellites2007Ingår i: Annales Zoologici Fennici, ISSN 0003-455X, E-ISSN 1797-2450, Vol. 44, nr 6, s. 462-474Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Phylogeography and population structure of the ant Formica exsecta was studied across Eurasia by using mtDNA sequences and microsatellite genotypes. The phylogeny based on 1.5 kb mtDNA fragment including the cytochrome b and part of the ND6 gene showed significant division (1.63% of nucleotide divergence) between a haplotype from Tibet and all other haplotypes. Similar to findings in diverse array of species associated with forest in Eurasia, the mtDNA phylogeny revealed no evidence for vicariant events due to separation in different forest refugia over glacial periods. The haplotype network includes several small clades (with 2-4 haplotypes in each) with geographically limited distribution, but one geographical region may have received haplotypes from two or more of such clades. This pattern could indicate mixing of different gene pools during postglacial colonization of Europe from different forest refugia or from an ancestral source with some spatial genetic differentiation. The genealogy and the haplotype frequencies suggest postglacial colonization of Siberia from a single refugial source of limited size. Maternal and biparental DNA markers indicated a moderate but significant level of population differentiation (mtDNA Phi(ST) = 0.42, microsatellite F-ST = 0.13) across Eurasia. However, no correlation between genetic differentiation estimated for mtDNA and microsatellites was found among the populations. Considerable reduction in microsatellite genetic diversity was found in the small population of F. exsecta in England, giving some basis to classify this population as near threatened.

1 - 7 av 7
RefereraExporteraLänk till träfflistan
Permanent länk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf