RESULTS: The Danish hedgehog population is composed of three genetic clusters. We used linear models to test for potential anthropogenic effects on the genetic variability of hedgehogs with iHO, uHE, P% and FIS as response variables, and assessed the demographic history of the population. We estimated individual observed (iHO), observed (HO), and unbiased expected (uHE) heterozygosity, inbreeding coefficient (FIS), percentage of polymorphic loci (P%) and tested for deviations from Hardy-Weinberg equilibrium (HWE). We used a Bayesian clustering method to subdivide individuals into genetically distinct populations. METHODS: We applied an adaptation of the genotyping by sequencing (GBS) technique to 178 individuals from six geographically distinct populations. This study aimed to assess the genetic composition and consequently the conservation status of a nationwide sample of European hedgehogs (Erinaceus europaeus) in Denmark. Preserving genetic connectivity across fragmented landscapes is therefore vital to counteract the negative consequences of genetic drift and inbreeding. OBJECTIVES: Low genetic diversity can lead to reduced average fitness in a population or even extinction.
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