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Allozyme variation in three closely related species of Caucasian rock lizards (Lacerta)

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Genetic diversity at 37 allozyme loci was surveyed from Lacerta valentini (4 populations), L. portschinskii and L. rudis (1 population each). The number of polymorphic loci ranged from 1 (L. valentini) to 11 (L. rudis). Mean heterozygosity (direct count) ranged from 0.003 (L. valentini) to 0.071 (L. rudis). Nei's (1978) genetic distance ranged from 0-0.03 among populations of L. valentini, 0.127-0.163 between L. valentini and L. rudis and 0.366-0.487 between L. portschinskii and the two other taxa. Indices of genetic variability for species having disjunct distributions were lower than in species with contiguous distributions, similar to the case of insular populations, which have lower values than do mainland populations.

Affiliations: 1: Department of Ichthyology & Herpetology, Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada; 2: Zoological Institute, Russian Academy of Sciences, St. Petersburg 119034, Russia; 3: Faculty of Biology, Erevan State University, 375000 Erevan, Armenia


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