To study the molecular genetic relationships and correlate them with the taxonomy within the complex of lacertid lizards of the genus Darevskia, the locus analysis of the copies of the SINE-type repeat (Squam1) specific for the order Squamata was used. It was demonstrated that one of the loci (No. 34) contained the Squam1 copy insert in all species and subspecies of the examined genus. SINE allelic copies in some of the loci contained large indels and specific sets of mutations. The allelic variant M (medium, about 340 bp) was found most frequently; it was detected in all subspecies of D. saxicola (saxicola, darevskii, szczerbaki, lindholmi) and in most of the other species of the genus. Two species, D. derjugini and D. praticola, differed from the other species in the presence of long (L) and short (S) alleles. The longest allele was characteristic of the D. derjugini population from the Northern Caucasus (L, 379 bp, ssp. silvatica), while the shortest allele (97 bp) united the derjugini and barani subspecies. The second allele S (279 bp) characterizes the subspecies D. praticola praticola, some individuals of which also carry allele M. The second subspecies, D. p. pontica, contains allele L2, which differs from all other medium alleles in the presence of strictly specific short indel. In addition to apomorphic indels, the specificity and mutation distribution patterns among the Squam1 alleles were also examined. An analysis of the NJ tree indicated the concordance between morphological and molecular genetic characters of the species derjugini, praticola, and saxicola. Furthermore, four subspecies of D. saxicola were much closer to each other than the subspecies within the first two species; D. d. silvatica and the group of D. d. derjugini + barani were clearly separated. It cannot be excluded that populations from Azerbaijan and Serbia can be treated as the independent subspecies of D. praticola.
Russian Journal of Genetics – Springer Journals
Published: Aug 14, 2013
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