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Articles by Øystein Flagstad
The effective size of the Scandinavian wolf population is too small for both short- and long-term conservation
Abstract The Scandinavian wolf population (Norway and Sweden) is intensively managed at a population size considered sustainable by managing authorities. As these authorities have decided to reduce the population to only 170 individuals, it is timely to evaluate this population size goal and to scrutinize underlying assumptions of recent simulation studies that inform population management.
Rapid loss of genetic variation and increased inbreeding in small and isolated populations of Norwegian wild reindeer
Abstract Wildlife responses to habitat loss and fragmentation are a central concern in the management and conservation of biodiversity. Small and isolated populations are vulnerable, both due to demographic and genetic mechanisms, which are often linked. Thus, understanding how (changes in) genetic diversity, effective population sizes, and levels of inbreeding relate to population size and degree of isolation is key for developing effective conservation strategies.
Harvest and decimation affect genetic drift and the effective population size in wild reindeer
1 INTRODUCTION An important consequence of harvesting populations is a change in their genetic dynamics (e.g. Allendorf et al., 2008; Kuparinen et al., 2016; Kuparinen & Merilä, 2007; Ryman et al., 1981; Waples, 2005). Harvest affects the genetic drift by changing demographic parameters, such as generation time, age structure, fecundity and survival, and the genetic variation in a population (Allendorf et al., 2008; Ryman et al., 1981; Sæther et al., 2009).
Whole-genome resequencing of temporally stratified samples reveals substantial loss of haplotype diversity in the highly inbred Scandinavian wolf population
Agnese Viluma1, Øystein Flagstad2, Mikael Åkesson3, Camilla Wikenros3, Håkan Sand3, Petter Wabakken4 and Hans Ellegren1 1Department of Evolutionary Biology, Uppsala University, SE-752 36 Uppsala, Sweden; 2Norwegian Institute for Nature Research (NINA), Torgard, NO-7485, Trondheim, Norway; 3Department of Ecology, Swedish University of Agricultural Sciences, SE-739 93 Riddarhyttan, Sweden; 4Faculty of Applied Ecology, Agricultural Sciences and Biotechnology, Inland Norway, University of Applied...
Whole-genome resequencing of temporally stratified samples reveals substantial loss of haplotype diversity in the highly inbred Scandinavian wolf population
Agnese Viluma1, Øystein Flagstad2, Mikael Åkesson3, Camilla Wikenros3, Håkan Sand3, Petter Wabakken4 and Hans Ellegren1 1Department of Evolutionary Biology, Uppsala University, SE.752 36 Uppsala, Sweden; 2Norwegian Institute for Nature Research (NINA), Torgard, NO-7485, Trondheim, Norway; 3Department of Ecology, Swedish University of Agricultural Sciences, SE-739 93 Riddarhyttan, Sweden; 4Faculty of Applied Ecology, Agricultural Sciences and Biotechnology, Inland Norway, University of Applied...
Genomic consequences of intensive inbreeding in an isolated wolf population
Abstract Inbreeding (mating between relatives) is a major concern for conservation as it decreases individual fitness and can increase the risk of population extinction. We used whole-genome resequencing of 97 grey wolves (Canis lupus) from the highly inbred Scandinavian wolf population to identify ‘identical-by-descent’ (IBD) chromosome segments as runs of homozygosity (ROH).
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