01984nas a2200193   4500008004100000020001400041245011000055210006900165260001000234300001200244490000700256520129700263653001501560653001701575100002001592700002101612700003001633856012701663       2012                        eng d  a1672-960900aGenetic distinctness of parthenogenetic forms of European Polydrusus weevils of the subgenus Scythodrusus0 aGenetic distinctness of parthenogenetic forms of European Polydr  cApril  a183-1940 v193 aAmong eight species of Polydrusus weevils which belong to subgenus Scythodrusus, at least two possess parthenogenetic forms: P. (S.) inustus and P. (S.) pilifer. Both of these species consist of dioecious populations in the Caspian area and of parthenogenetic populations in Eastern Europe (P. (S.) inustus), the Caucasus region (both species) and Middle Asia (P. (S.) pilifer). The origin of parthenogenesis in this subgenus is unresolved; however some data suggest that the parthenogenetic forms are of hybrid ancestry. The genetic distinctness of parthenogenetic Scythodrusus was assessed on the basis of COII, ITS2, EF1-[alpha] and Wolbachia wsp, 16S ribosomal DNA, ftsZ and hcpA sequence comparisons. Both taxa turned out to be monophyletic for all markers, which is an evidence against hybridization of their dioecious ancestors. On the other hand, a high frequency of heterozygous P. (S.) inustus females suggests an origin resulting from hybridization between genetically distinct dioecious representatives of this species. Very similar strains of Wolbachia supergroup A were found in both species, indicating that they have been either inherited from a common ancestor or were transmitted between parthenogenetic Scythodrusus weevils and probably spread randomly across their ranges.10aPolydrusus10aScythodrusus1 aKajtoch, Lukasz1 aKorotyaev, Boris1 aLachowska-Cierlik, Dorota  uhttps://weevil.myspecies.info/genetic-distinctness-parthenogenetic-forms-european-polydrusus-weevils-subgenus-scythodrusus