The genetic structure of populations of specially protected mollusk Cepaea vindobonensis (Mollusca, Gastropoda, Pulmonata) in a north-eastern part of the modern area

Snegin, Eduard A.; Анатольевич, Снегин Эдуард; Snegina, Elena A.; Андреевна, Снегина Елена

doi:10.17816/ecogen14313-27

Cited by 5 publications

(2 citation statements)

References 24 publications

(24 reference statements)

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“…Instead, the Pontic region was likely settled from eastern Balkan populations. These findings are generally congruent with the recent population genetic study of Snegin and Snegina (2016) on C. vindobonensis . Based on nuclear loci (allozymes, Random Amplification of Polymorphic DNA, Inter-Simple Sequence Repeats), they showed that Pontic populations of this species had reduced allelic diversity and increased levels of inbreeding in some groups and high levels of isolation of populations compared with Pannonian (Austrian) populations.…”

Section: Discussionsupporting

confidence: 90%

Reconstructed historical distribution and phylogeography unravels non-steppic origin of Caucasotachea vindobonensis (Gastropoda: Helicidae)

et al. 2017

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Existing data on the phylogeography of European taxa of steppic provenance suggests that species were widely distributed during glacial periods but underwent range contraction and fragmentation during interglacials into “warm-stage refugia.” Among the steppe-related invertebrates that have been examined, the majority has been insects, but data on the phylogeography of snails is wholly missing. To begin to fill this gap, phylogeographic and niche modeling studies on the presumed steppic snail Caucasotachea vindobonensis were conducted. Surprisingly, reconstruction of ancestral areas suggests that extant C. vindobonensis probably originated in the Balkans and survived there during the Late Pleistocene glaciations, with a more recent colonization of the Carpatho-Pannonian and the Ponto-Caspian regions. In the Holocene, C. vindobonensis colonized between the Sudetes and the Carpathians to the north, where its recent and current distribution may have been facilitated by anthropogenic translocations. Together, these data suggest a possible non-steppic origin of C. vindobonensis. Further investigation may reveal the extent to which the steppic snail assemblages consist partly of Holocene newcomers.

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Section: Discussionsupporting

confidence: 90%

Reconstructed historical distribution and phylogeography unravels non-steppic origin of Caucasotachea vindobonensis (Gastropoda: Helicidae)

et al. 2017

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“…Studies of the genetic structure of the adventitious populations of H. pomatia in Eastern Europe using the ISSR m ethod based on capillary electrophoresis make it possible to m ore accurately estimate the level of genetic diversity and the subdivision of groups of snails. The values of the effective num ber of Rom an snail populations determ ined using the Slatkin model significantly exceed the similar indices we obtained earlier in populations of mollusc species aboriginal for the area under study [5,16,17], which indicates their high viability. The latter is likely to contribute to suc cessful colonization by Rom an snails of the areas out side their native range.…”

Section: Co N Clu Sio N Ssupporting

confidence: 51%

Estimation of the Genetic Structure of Helix pomatia L. Populations (Mollusca, Pulmonata) by Capillary Electrophoresis of ISSR DNA Fragments

2018

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Using the capillary electrophoresis of ISSR DNA fragments, the genetic structure of the adventi tious populations of Helix pomatia L. (Mollusca, Pulmonata) inhabiting the territory of Eastern Europe was studied. A significant decrease in genetic heterogeneity (He = 0.095 ± 0.002) and population differentiation level (Fst = 0.074) was revealed in comparison with similar data obtained using the ISSR method with elec trophoretic detection in agarose gel and allozymes in polyacrylamide gel. Similar to other methods, an effect of spatial isolation (RM =-0.476) was found on the basis of regression analysis between genetic and geo graphical distances. The effective population size, calculated with the help of M. Slatkin's model, turned out to be the largest of the previously calculated values (Ne = 41.8), which indicates the high viability of the stud ied groups of Roman snails in newly developed territories.

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Assessment of the state of population gene pools of the slightly mobile animal species on the example of the land snail Bradybaena fruticum Müll. (Gastropoda, Pulmonata) based on the DNA markers

Snegin

Анатольевич²,

Snegina

et al. 2017

Ecological genetics

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Using the polymorphic DNA markers (RAPD and ISSR), the genetic structure was examined and the viability of 26 populations of the terrestrial gastropod Bradybaena (Fruticicola) fruticum Müll., most of which lives in the south of the Central Russian Upland, was estimated. Samples from Romania, the Urals and Vyatka regions for comparison were taken. In total, 1153 individuals were examined. The level of expected heterozygosity averaged He = 0.208 ± 0.028, the Shannon index Ish = 0.320 ± 0.039. The lowered level of variability, both actual and theoretically expected (estimated by the methods of Chao1-bc and 1st order jackknife) in groups of anthropogenically disturbed biotopes inhabiting the zones of industrial enterprises is noted. The indices of the genetic disunity of the populations were Fst = 0.298, Gst = 0.254, and the level of the gene flow Nm = 0.708. The cluster analysis and the Mantel correlation coefficient Rm = –0.024 showed the absence of a reliable relationship between the geographic and genetic distance between populations, which indicates the violation of the isolation model by distance and confirms the thesis advanced earlier that the urbanized forest-steppe landscape disrupts the natural migration processes, leads to the strong isolation and of the genetic drift in populations of snails. At the same time, the observed phenomenon of increasing the degree of subdivision of populations against the background of a decrease in the allelic diversity noted by us in many groups of bush snail can be regarded as the shift of genetic equilibrium toward increasing interpopopulation diversity (according to Wright's model). The calculation of the effective population size with the help of the Slatkin model turned out to be the lowest of the background mollusks in the study area (Ne = 0.39-0.83). However, the level of the effective population size calculated with the subdivision index (Fst and Gst) was equal to 6.2 and 7.3, respectively, which is comparable with other species of mollusks.

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The genetic structure of populations of specially protected mollusk Cepaea vindobonensis (Mollusca, Gastropoda, Pulmonata) in a north-eastern part of the modern area

Cited by 5 publications

References 24 publications

Reconstructed historical distribution and phylogeography unravels non-steppic origin of Caucasotachea vindobonensis (Gastropoda: Helicidae)

Reconstructed historical distribution and phylogeography unravels non-steppic origin of Caucasotachea vindobonensis (Gastropoda: Helicidae)

Estimation of the Genetic Structure of Helix pomatia L. Populations (Mollusca, Pulmonata) by Capillary Electrophoresis of ISSR DNA Fragments

Assessment of the state of population gene pools of the slightly mobile animal species on the example of the land snail Bradybaena fruticum Müll. (Gastropoda, Pulmonata) based on the DNA markers

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