Abstract
The symbiotic bacterium Wolbachia is widespread in natural Drosophila melanogaster populations. Its frequency in D. melanogaster populations is broadly variable in different regions—from occasional individuals to total infestation. Six genotypes are recognized in this symbiont: wMel, wMel2, wMel3, wMel4, wMelCS, and wMelCS2. Also, the following two genotypes of Wolbachia are everywhere: wMel and wMelCS. The rest belong to rare genotyoes which are spread in a limited area or in laboratory stocks. In spite of the studies of Wolbachia spreading in D. melanogaster populations of the world, the information of its prevalence and genotypic diversity in Eurasian populations is still obscure. We analyzed the prevalence and genotypic diversity of Wolbachia in the natural D. melanogaster population of the city of Nalchik (Kabardino-Balkaria). It is shown that the genotypic composition of Wolbachia and its frequency in the population have remained stable for four years. Two genotypes are present in the population: wMel and wMelCS, with wMel being predominant. We did not find any Wolbachia genotypes in the D. melanogaster population in Nalchik.
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