Search for dissertations about: "genetic rescue"

Showing result 1 - 5 of 23 swedish dissertations containing the words genetic rescue.

2. 1. Population size, viability and genetic diversity in the orchid Gymnadenia conopsea

   Author : Linus Söderquist; Nina Sletvold; Sophie Karrenberg; Hans Jacquemyn; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; demography; extinction probability; genetic diversity; genetic rescue; genetic structure; Gymnadenia conopsea; orchid conservation; population viability; population size; Biology with specialization in Ecological Botany; Biologi med inriktning mot ekologisk botanik;

   Abstract : In this thesis, I combined controlled crosses with genetic and demographic data to examine how a main conservation value indicator, population size, was associated with estimates of population viability. I focused on the still common, but decreasing, perennial orchid Gymnadenia conopsea at two spatial scales—locally on the island Öland, in SE Sweden, and regionally across Scandinavia. READ MORE

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

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

   Abstract : 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. READ MORE

5. 3. Quo vadis? Insights into the determinants of evolutionary dynamics

   Author : Alexandre Rêgo; Rike Stelkens; Dmitri Petrov; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; natural selection; selection; genetic drift; evolutionary rescue; historical contingency; adaptation; complex environments; evolutionary predictability; parallel evolution; populationsgenetik; Population Genetics;

   Abstract : Predicting future evolutionary outcomes and explaining past and current patterns of biodiversity are fundamental goals in evolutionary biology. Trajectories of evolving populations are determined by evolutionary mechanisms (natural selection, mutation, genetic drift, and gene flow) and the environment in which the populations are found. READ MORE

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

   Author : Øystein Flagstad; Ettore Randi; Uppsala universitet; []
   Keywords : 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;

   Abstract : 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. READ MORE

7. 5. Conservation genomics in inbred Scandinavian wolves using bioinformatic methods

   Author : Linnéa Smeds; Hans Ellegren; Giorgio Bertorelle; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; conservation genomics; Canis lupus; bioinformatics; Y chromosome; admixture; genetic load; structural variation; GWAS; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

   Abstract : With the recent and unprecedented progress in retrieving DNA sequence information from a large number of individuals of any species, conservation genetic research has entered a new phase. Specifically, it has become possible to study how genomes of endangered species respond to reductions in population size. READ MORE