Molecular genetic diversification of the lizard complex Darevskia raddei (Sauria: Lacertidae): Early stages of speciation

To characterize the molecular genetic diversity of the genus Darevskia, several populations were examined by the inter-SINE-PCR method, reporting the number and sizes of the spacers between individual copies of SINE-like interspersed repeats. Examination of 17 D. raddei geographical populations and...

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Veröffentlicht in:Molecular biology (New York) Jg. 41; H. 5; S. 764 - 775
Hauptverfasser: Grechko, V. V., Bannikova, A. A., Kosushkin, S. A., Ryabinina, N. L., Milto, K. D., Darevsky, I. S., Kramerov, D. A.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York Springer Nature B.V 01.10.2007
Schlagworte:
Genetic diversity
Lacertidae
Lacertilia
ISSN:0026-8933, 1608-3245
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Zusammenfassung:To characterize the molecular genetic diversity of the genus Darevskia, several populations were examined by the inter-SINE-PCR method, reporting the number and sizes of the spacers between individual copies of SINE-like interspersed repeats. Examination of 17 D. raddei geographical populations and several reference species revealed unequal genetic differences, measured as Nei and Li's genetic distances (D^sub NL^), for different groups of samples. The highest homogeneity was observed for the apparently panmictic D. raddei nairensis population from the basin of the Hrazdan River: genetic differences within each of the five samples and between them were similarly low (less than 0.1). The difference between ten samples of D. raddei raddei from Armenia and Karabakh (0.2-0.3) was somewhat higher than the interindividual difference within each sample (0.1-0.2), indicating that the samples belonged to different populations. The assumption was supported by the phylogenetic tree topology and multidimensional scaling. The differences between samples from the morphological subspecies D. raddei raddei and D. raddei nairensis ranged 0.3-0.4. The difference of two D. raddei raddei samples of Talysh (Azerbaijan) from other samples of the same subspecies corresponded to the subspecific level. The genetic distances between the good species D. raddei and D. rudis was 0.6-0.7. In terms of D^sub NL^, a questionable population from northwestern Turkey ("D. tristis") was closer to D. rudis (D^sub NL^ = 0.45), probably representing its subspecies. The phylogeography of D. raddei is discussed.[PUBLICATION ABSTRACT]
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ISSN:0026-8933
1608-3245
DOI:10.1134/S0026893307050093