Abstract
Aim. The study aimed to determine indicators characterizing the population structure of the Lviv region. Methods. The study employed the method of describing the genetic structure of the population using surnames, as proposed by I. Barrai. Results. Indicators of population structure in district populations of the Lviv region exhibited a wide range of values. The basic index, the isonymy index (I), varied between 2.3 and 26.5 (×10-4). The inbreeding coefficient (FST) ranged from 11.2 to 66.1 (×10-5), the migration index (v) from 70.8 to 212.9 (10-4), the diversity index (a) from 3.8 to 22.9 (×102), the entropy index (H) from 10.0 to 13.0, and the redundancy of surnames (R) from 26.1 to 36.2. In some settlements, there is an accumulation of bearers of the same surname, which can be explained by the founder effect. Conclusions. The rates of isonymy, inbreeding, and migration in district populations were several times higher than those observed in the regional population. The level of isonymy was lowest in areas with high tourist and transit activity.
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