Sökning: "loss of genetic variability"

Visar resultat 1 - 5 av 20 avhandlingar innehållade orden loss of genetic variability.

  1. 1. Population History and Non-invasive Monitoring : Use of low copy number DNA in Conservation Genetics

    Författare :Øystein Flagstad; Ettore Randi; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; genetic tagging; immigration; loss of genetic variability; non-invasive molecular techniques; population decline; Swayne’s hartebeest; wolf; wolverine; Biologi; Biology; Biologi; ekologisk botanik; Ecological Botany;

    Sammanfattning : Conservation genetics research is increasingly becoming an integrated part of the management of small and endangered populations. In this thesis I developed tools for genetic analysis of low copy number sources of DNA, such as old teeth from museum specimens as well as field-collected faeces and urine. LÄS MER

  3. 2. Importance of tannins for responses of aspen to anthropogenic nitrogen enrichment

    Författare :Franziska Bandau; Benedicte Albrectsen; Michael Gundale; Lisbeth Josson; Umeå universitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; aspen; foliar condensed tannins; genetic variability; anthropogenic nitrogen enrichment; plant growth; plant defense; litter decomposition; Populus tremula; asp; kondenserade tanniner; genetisk variabilitet; antropogent kväve; tillväxt; växtförsvar; förna nedbrytning; Populus tremula; Environmental Science; miljövetenskap; ekologisk botanik; Ecological Botany; Entomology; entomologi; Physiological Botany; fysiologisk botanik; Population Biology; populationsbiologi;

    Sammanfattning : Boreal forests are often strongly nitrogen (N) limited. However, human activities are leading to increased N inputs into these ecosystems, through atmospheric N deposition and forest fertilization. LÄS MER

  4. 3. Conservation biology and genetic structure of fringe populations of the scarce heath butterfly in Sweden

    Författare :Anna Cassel; Volker Loeschcke; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Genetics; fragmentation; genetic structure; mobility; inbreeding; habitat requirements; Lepidoptera; Genetik; Clinical genetics; Klinisk genetik; Conservation Biology; naturvårdsbiologi;

    Sammanfattning : During the past century, about 82% of meadows and pastures have been lost in Sweden, with negative consequences for their flora and fauna. An example is the scarce heath butterfly, which is one of the red-listed species threatened by such habitat loss through afforestation. LÄS MER

  5. 4. Glycoprotein G of Herpes simplex virus type 2. Antigenicity and genetic variability

    Författare :Jan-Åke Liljeqvist; Göteborgs universitet; []
    Nyckelord :Herpes simplex virus type 2; glycoprotein G; antigenic regions; sequence variability;

    Sammanfattning : Herpes simplex virus type 2 (HSV-2) causes genital lesions, meningitis and occasionally, severe neonatal infections. Globally HSV-2 infection is one of the most common sexually transmitted diseases. LÄS MER

  7. 5. Genetic variability of hepatitis B virus in chronic infection

    Författare :Charles Hannoun; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; hepatitis B virus; mutation; genotype; phylogeny; ; Recombination; coinfection; interferon; response;

    Sammanfattning : Chronic hepatitis B is a major health problem, and may lead to cirrhosis and hepatocellular carcinoma. The liver damage in hepatitis B virus (HBV) infection is considered to be a result of the immune response, and not a cytopathic effect of the virus itself. LÄS MER