On the basis of the analysis of genetic variation detectable by ISSR-PCR, the state of the gene pools of 14 populations of Roman snail Helix pomatia L. in the conditions of urbanized landscapes of the southeastern and eastern parts of the current range was examined. According to the data obtained, the majority of the studied populations of this mollusk are in satisfactory condition. This is evidenced by the increased level of genetic diversity (H e = 0.199 ± 0.025, I sh = 0.306 ± 0.035) and the high values of effective population size, calculated, on the basis of the straight-line regression equation, between the pairwise genetic and geographic distances (Ne = 2.0–4.9) that are comparable with indigenous common species of terrestrial mollusks. Despite the high level of differentiation (Gst = 0.255, Φst = 0.233, N m = 0.822), the population distribution was not random (R m =–0.591, p = 0.0004) and corresponded to the model of isolation by distance. It is hypothesized that, in the adventitious colonies of this mollusk, effective formation of a balanced genetic structure takes place that, in the context of biological and ecological features, facilitates its adaptation to the conditions of an urban environment and the population of the new territories of Eastern Europe.
Russian Journal of Genetics – Springer Journals
Published: Apr 9, 2017
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