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Genomic variation and population structure of Dalmatian Pramenka sheep

Dalmatian Pramenka (DAL) is the largest autochthonous population of sheep in Croatia that belongs to the long tailed Pramenka type of sheep, which are widespread over South-East Europe. We genotyped 28 DAL individuals and 32 mouflons from Croatia (Kalifront) on the Illumina Ovine SNP50 K BeadChip. After the data quality control 26 DAL and 31 mouflons with 40677 SNP remained. We used 478 publicly available genotypes of European and Asian sheep from 18 breeds and three mouflon varieties (European mouflon, Sardinian mouflon and Asian mouflon). Population structure and genetic differentiation were assessed using principal component analysis (PCA) and BAPS software. PCA and BAPS analysis showed that genetic differentiation corresponds well with the geographic origin. At the same time, the clear breed separation was observed. DAL individuals intermingled with other Pramenka type sheep from the geographically neighbouring regions while it was separated from the northern European sheep breeds and mouflon populations.

sheep, conservation genomics, population structure,

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