Sökning: "Inbreeding sweden"

Visar resultat 1 - 5 av 18 avhandlingar innehållade orden Inbreeding sweden.

  1. 1. Dispersal, inbreeding and fitness in natural populations

    Författare :Bengt Hansson; MEMEG; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; immigration; inbreeding; inbreeding depression; heterozygosity; microsatellite; great reed warbler; bird; Djurekologi; Animal ecology; philopatry; heritability; founder event; dispersal; bottleneck;

    Sammanfattning : To evaluate how inbreeding affects the viability of small populations, it is crucial to determine what constitutes a population (i.e., the number of breeders in local patches and the degree of dispersal), and also to estimate the reproductive consequences of philopatry and emigration. LÄS MER

  3. 2. Dynamics of inbreeding and genetic rescue in a small population

    Författare :Malin Hasselgren; Karin Norén; Carles Vilà; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; inbreeding; inbreeding depression; genetic rescue; fitness; genomics; conservation genetics; mutational load; arctic fox; pedigree; gene flow; zoologisk ekologi; Animal Ecology;

    Sammanfattning : Isolation at small population size can reduce individual fitness and impede population growth caused by inbreeding and genetic drift (i.e. inbreeding depression). Inbreeding depression can however be circumvented by gene flow from unrelated individuals through masking of recessive deleterious alleles and contribute to population persistence (i. LÄS MER

  4. 3. Selection, Maternal Effects and Inbreeding in Reindeer Husbandry

    Författare :Lars Rönnegård; Högskolan Dalarna; []
    Nyckelord :breeding programme; communal grazing; randombred populations; Rangifer tarandus tarandus; semidomestic reindeer; gene flow; reindeer; animal breeding; gene flow; random mating; breeding methods; genetic inheritance; population structure; extensive husbandry; sweden;

    Sammanfattning : In extensive grazing systems where several owners’ flocks are allowed to mix, selection strategies will also interact, due to gene flow between flocks. The aim of the thesis was to analyse breeding schemes in terms of genetic gain and rate of inbreeding (?F), given the complexity of ownership and interaction of selection strategies within a mixing reindeer population. LÄS MER

  5. 4. 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

  7. 5. Effects of inbreeding and selection on bristle number in Drosophila melanogaster

    Författare :Marianne Rasmuson; Stockholms högskola; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER