Abstract
Four types of nuclear DNA markers identified by the taxonprint, RAPD, and IMP (Inter-MIR-PCR) methods, and the nucleotide sequences of satellite DNA monomers have been used to analyze the molecular genetic similarity between some populations, subspecies, and species of lizards combined into the group Lacerta s. str., as well as representatives of some other genera. The notions on the systematics and phylogeny of this group based on morphological and zoogeographic criteria have been compared to the conclusions based on molecular genetic data. The genus and species subdivisions of populations based on nuclear molecular markers and morphological characters generally agree with each other, the degree of genetic differences being correlated with the taxonomy suggested by zoomorphologists. The degree of differences between the subspecies of one of the species studied, Lacerta agilis, varies depending on the molecular markers used: according to the results of RAPD analysis, all subspecies substantially differ from one another, the variation within populations being small; with respect to other markers, the differences are smaller and not equivalent. The existence of the so-called eastern and western clades of this species earlier assumed by other researchers on the basis of mtDNA and morphological data has been confirmed. There are no distinct gradations exceeding individual variation in 14 populations of L. agilis exigua (the eastern clade) with respect to IMP markers, although these populations inhabit a vast area from the Ural Mountains to the Kabardino-Balkar Republic (the Caucasus). These data suggest that the subspecies has been rapidly spreading northwards since the Pleistocene glaciation (about 15,000 years ago).
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Original Russian Text © V.V. Grechko, L.V. Fedorova, D.M. Ryabinin, N.L. Ryabinina, D.G. Ciobanu, S.A. Kosushkin, I.S. Darevsky, 2006, published in Molekulyarnaya Biologiya, 2006, Vol. 40, No. 1, pp. 61–73.
If a gene tree conflicts with an accepted tree, one should stop and ponder why. C. B. Stewart [1].
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Grechko, V.V., Fedorova, L.V., Ryabinin, D.M. et al. The use of nuclear DNA molecular markers for studying speciation and systematics as exemplified by the “Lacerta agilis complex” (Sauria: Lacertidae). Mol Biol 40, 51–62 (2006). https://doi.org/10.1134/S0026893306010092
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DOI: https://doi.org/10.1134/S0026893306010092