Search for dissertations about: "mitochondrial dna and phylogeography"

Showing result 1 - 5 of 7 swedish dissertations containing the words mitochondrial dna and phylogeography.

2. 1. Phylogeography and mitochondrial DNA diversity in arctic lemmings

   Author : Vadim B. Fedorov; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Genetics; Genetik; Clinical genetics; Klinisk genetik; Genetics; genetik;

   Abstract : The aim of this thesis is to evaluate the effects of Quaternary environmental fluctuations on the present patterns of mitochondrial DNA variation in the wood lemming, Myopus schisticolor, and the two genera of Arctic lemmings: collared lemmings, Dicrostonyx, and true lemmings, Lemmus.The phylogeographic pattern and the limited mtDNA diversity in the Scandinavian populations of the wood lemming reflect recent colonization by a limited number of founders during the Holocene boreal forest expansion. READ MORE

4. 2. Population Genetic Analyses of Natal Dispersal and Substructure in Three Bird Species

   Author : Tobias Sahlman; Jan Ekman; Jacob Höglund; Ben J. Hatchwell; Uppsala universitet; []
   Keywords : Ecology; Perisoreus infaustus; Gallinago media; Lagopus muta; relatedness; philopatry; biased dispersal; phylogeography; microsatellite; mitochondrial DNA; Ekologi;

   Abstract : Genetic variation within and among populations is a result of past and ongoing processes. Among the most important of such processes are dispersal, habitat fragmentation and selection. This thesis use neutral genetic variation as a tool to investigate these processes in three bird species. READ MORE

5. 3. Phylogeographic Structure and Genetic Variation in Formica Ants

   Author : Anna Goropashnaya; Pekka Pamilo; David Bilton; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Genetics; Formica ants; phylogeography; phylogeny; Pleistocene refugia; population expansion; social organization; Genetik; Clinical genetics; Klinisk genetik;

   Abstract : The aim of this thesis is to study phylogeny, species-wide phylogeography and genetic diversity in Formica ants across Eurasia in connection with the history of biotic responses to Quaternary environmental changes.The mitochondrial DNA phylogeny of Palaearctic Formica species supported the subgeneric grouping based on morphological similarity. READ MORE

6. 4. Evolutionary History of the Root Vole (Microtus oeconomus) as Revealed by Y Chromosome and Mitochondrial DNA sequences

   Author : Cecilia Brunhoff; Malmö Patologi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Genetics; colonization history; phylogeography; root vole; cytogenetics; Genetik; cytogenetik;

   Abstract : The root vole (Microtus oeconomus) is a rodent with Holarctic distribution. In fact, it is the only Microtus vole found in both Eurasia and North America. Phylogeographic analyses of the root vole from across its distribution range were performed using mitochondrial and Y chromosome DNA sequences. READ MORE

7. 5. Phylogeography of the Adder, Vipera berus

   Author : Martin Carlsson; Håkan Tegelström; Michael Douglas; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Genetics; Phylogeography; Vipera; adders; mtDNA; microsatellites; RAPDs; Genetik; Clinical genetics; Klinisk genetik; Genetics; genetik;

   Abstract : The phylogeography of a wide ranging temperate species, the adder, Vipera berus, was investigated using several genetic tools, with special emphasis on the post-glacial colonisation pattern of Fennoscandia. The area was colonised from two directions by adder populations representing different glacial refugia. READ MORE