Browsing NTNU Open by Author "Niskanen, Alina Katariina"

Now showing items 1-7 of 7

    • Animal models with group-specific additive genetic variances: extending genetic group models 

      Muff, Stefanie; Niskanen, Alina Katariina; Saatoglu, Dilan; Keller, Lukas; Jensen, Henrik (Journal article; Peer reviewed, 2019)
      Background The animal model is a key tool in quantitative genetics and has been used extensively to estimate fundamental parameters, such as additive genetic variance or heritability. An implicit assumption of animal ...

    • Dispersal in a house sparrow metapopulation: An integrative case study of genetic assignment calibrated with ecological data and pedigree information 

      Saatoglu, Fikriye Dilan; Niskanen, Alina Katariina; Kuismin, Markku; Ranke, Peter Sjolte; Hagen, Ingerid Julie; Araya-Ajoy, Yimen; Kvalnes, Thomas; Pärn, Henrik; Rønning, Bernt; Ringsby, Thor Harald; Sæther, Bernt-Erik; Husby, Arild; Sillanpää, Mikko J.; Jensen, Henrik (Peer reviewed; Journal article, 2021)
      Dispersal has a crucial role determining ecoevolutionary dynamics through both gene flow and population size regulation. However, to study dispersal and its consequences, one must distinguish immigrants from residents. ...

    • Genetic assignment of individuals to source populations using network estimation tools 

      Kuismin, Markku; Saatoglu, Dilan; Niskanen, Alina Katariina; Jensen, Henrik; Sillanpää, Mikko J. (Peer reviewed; Journal article, 2019)
      Dispersal, the movement of individuals between populations, is crucial in many ecological and genetic processes. However, direct identification of dispersing individuals is difficult or impossible in natural populations. ...

    • Impact of genetics and epigenetic processes on parasite infection dynamics in the house sparrow 

      Lundregan, Sarah Louise (Doctoral theses at NTNU;2022:399, Doctoral thesis, 2022)
      Parasites are important drivers of ecological and evolutionary processes in natural populations, and can exert strong selective pressures on their hosts by reducing host fitness. Investigating the mechanisms involved in ...

    • Inbreeding is associated with shorter early-life telomere length in a wild passerine 

      Pepke, Michael Le; Niskanen, Alina Katariina; Kvalnes, Thomas; Boner, Winnie; Sæther, Bernt-Erik; Ringsby, Thor Harald; Jensen, Henrik (Peer reviewed; Journal article, 2022)
      Inbreeding can have negative effects on survival and reproduction, which may be of conservation concern in small and isolated populations. However, the physiological mechanisms underlying inbreeding depression are not ...

    • Inferences of genetic architecture of bill morphology in house sparrow using a high-density SNP array point to a polygenic basis 

      Lundregan, Sarah; Hagen, Ingerid Julie; Gohli, Jostein; Niskanen, Alina Katariina; Kemppainen, Petri; Ringsby, Thor Harald; Kvalnes, Thomas; Pärn, Henrik; Rønning, Bernt; Holand, Håkon; Ranke, Peter Sjolte; Båtnes, Anna Solvang; Selvik, Linn-Karina M.; Lien, Sigbjørn; Sæther, Bernt-Erik; Husby, Arild; Jensen, Henrik (Journal article; Peer reviewed, 2018)
      Understanding the genetic architecture of quantitative traits can provide insights into the mechanisms driving phenotypic evolution. Bill morphology is an ecologically important and phenotypically variable trait, which is ...

    • Variation in generation time reveals density regulation as an important driver of pace of life in a bird metapopulation 

      Araya-Ajoy, Yimen; Niskanen, Alina Katariina; Froy, Hannah; Ranke, Peter Sjolte; Kvalnes, Thomas; Rønning, Bernt; Pepke, Michael Le; Jensen, Henrik; Ringsby, Thor Harald; Sæther, Bernt-Erik; Wright, Jonathan (Journal article; Peer reviewed, 2021)
      Generation time determines the pace of key demographic and evolutionary processes. Quantified as the weighted mean age at reproduction, it can be studied as a life-history trait that varies within and among populations and ...