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Spatial molecular ecology of the brown bear in Western Carpathians
Šrutová, Jana ; Hulva, Pavel (advisor) ; Hájková, Petra (referee)
In the current human-dominated landscape, wildlife populations are more often exposed to the island effect, loss of genetic variation and the associated risk of extinction vortex. Landscape genetics studies microevolutionary processes in populations and their relationships to landscape features. Integration of the results of genetic analyses and the results of habitat modeling of the species under study helps to identify transition zones between suitable habitats or anthropogenic barriers to gene flow in the landscape. Analysis of the spatial population structure of wildlife populations is an important tool for the conservation and management of populations. Between 2019-2021, 2172 mostly non-invasive brown bear (Ursus arctos) samples were collected in Slovakia, mostly collected in the Western Carpathian region. Using a microsatellite panel containing 10 polymorphic loci and the SRY gene for sex determination, a total of 1036 genotypes were identified, including 632 unique genotypes. The population seems to be relatively diversified and the observed heterozygosity is comparable to other demographically stable bear populations in Europe. Using STRUCTURE, a Bayesian clustering analysis was performed, which divided the population into three or four subpopulations according to the selected method. The...
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