Evoluciona divergencija seksualnih populacija vrste Otiorhynchus alpicola na području jugoistočnih Dinarida
Evolutionary divergence of sexual Otiorhynchus alpicola populations on the Southeast Dinarids
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The present distribution of weevil Otiorhynchus alpicola at the Southeast Europe is disjunct (vicariant), restricted to open habitats above the timberline around the tops of the highest mountains. In order to estimate the level of genetic differentiation and patterns of evolutionary divergence over these postglacial vegetational disjunctions, allozyme variation of ten populations were analyzed. The analysis of genetic differentiation among populations revealed a moderate degree of intrapopulation variation and a rather high level of genetic differentiation. The results of hierarchical Wright's statistics (FDT=0.338; FDs=0.278 and FST=0.083) and a low level of estimated number of migrants per population (Nem) suggest the prevalence of the genetic differentiation of the local populations over regional genetic differentiation. Results of estimation of genetic distances between populations are concordant with the history of the high altitude environments in Southeast Europe during Pleistocene.