Prevalence and genetic diversity of Wolbachia endosymbiont and mtDNA in Palearctic populations of Drosophila melanogaster

BMC Evolutionary Biology
Roman A BykovYury Yu Ilinsky

Abstract

Maternally inherited Wolbachia symbionts infect D. melanogaster populations worldwide. Infection rates vary greatly. Genetic diversity of Wolbachia in D. melanogaster can be subdivided into several closely related genotypes coinherited with certain mtDNA lineages. mtDNA haplotypes have the following global distribution pattern: mtDNA clade I is mostly found in North America, II and IV in Africa, III in Europe and Africa, V in Eurasia, VI is global but very rare, and VIII is found in Asia. The wMel Wolbachia genotype is predominant in D. melanogaster populations. However, according to the hypothesis of global Wolbachia replacement, the wMelCS genotype was predominant before the XX century when it was replaced by the wMel genotype. Here we analyse over 1500 fly isolates from the Palearctic region to evaluate the prevalence, genetic diversity and distribution pattrern of the Wolbachia symbiont, occurrence of mtDNA variants, and finally to discuss the Wolbachia genotype global replacement hypothesis. All studied Palearctic populations of D. melanogaster were infected with Wolbachia at a rate of 33-100%. We did not observe any significant correlation between infection rate and longitude or latitude. Five previously reported Wolbachi...Continue Reading

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Citations

Mar 1, 2019·BMC Evolutionary Biology·Yuriy L OrlovLeonid L Moroz
Mar 2, 2021·Archives of Insect Biochemistry and Physiology·Elena V BurdinaNataly Е Gruntenko

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Datasets Mentioned

BETA
AE017196.1
NC001709

Methods Mentioned

BETA
PCR

Software Mentioned

AtteStat
MS Excel

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