The genetic structure of populations of the specially protected androsace kozo-poljanskii Ovsz. Species under the conditions of the Southern Central Russian upland based on DNA markers

Based on DNA markers (Inter simple sequence repeats (ISSR)) the state of the gene pools of 10 populations (438 individuals) of specially protected relict plant species androsace kozo-poljanskii Ovsz. Seu androsace villosa subsp. koso-poljanskii Fed. in the Southern Central Russian upland is studie

On the issue of the genetic structure of species found in the relic communities of central russian upland southern territories

This paper performs a comparative analysis of population genetic structure concerning specially protected species of terrestrial mollusk Helicopsis striata Müller and the herbaceous plant Androsace kozo-poljanskii Ovs

Assessment of the genetic distances between some species of the family Bradybaenidae (Mollusca, Pulmonata)

On the basis of inter-simple sequence repeat (ISSR) loci and the nucleotide sequences of nuclear (18S and ITS-1) and mitochondrial genes (COI and 16S), a phylogenetic analysis of the three species of terrestrial mollusks of the family Bradybaenidae (Mollusca, Pulmonata), Bradybaena fruticum Mull., Bradybaena schrencki Midd., and Bradybaena transbaicalia Shileyko, was conducted to clarify their taxonomic statu

Genetic structure of populations of specially protected mollusk Cepaea vindobonensis (Mollusca, Gastropoda, Pulmonata) in the northeastern part of the modern-day range

A research study on the population structure of relict and specially protected species Cepaea vindobonensis Fer. (Mollusca, Gastropoda, Pulmonata) in the conditions of the northeastern part of the modern-day distribution range is conducted with the use of allozymes and DNA markers. Groups with both high and low levels of genetic diversity are reveale

Species composition of green frogs (Pelophylax Esculentus Complex) of the Belgorod agglomeration based on DNA markers

On the basis of molecular genetic analysis of the intron-1 of the nuclear serum albumin gene (SAI-1) were identified 177 individuals of Pelophylax esculentus complex of 9 localities Belgorod. Two types of population systems R and RE were identified. Pure populations of L-type, E-type and LE-type as well as P. lessonae individuals were not identifie

Screening of the allele pool of the pig populations of various breeds in the Belgorod and Voronezh regions of Russia by the gene of the estrogen receptor gene ESR1

We studied populations of boars of two pig breeds (Large White and Landrace) in the Belgorod and Voronezh regions of Russia to identify mutations in the gene of the estrogen receptor ESR1 (ESR/PvuII). The results showed that the frequency of the positive B allele was 0.279 in the Landrace and 0.824 in the Large White. An assumption is made that the breeding farms of the indicated region carry out the insufficient selection in Landrace pig populations in relation to maintaining high rates of multiple fertilit

Genotoxicity evaluation of multiwalled carbon nanotubes: in vivo studies in mice

Therefore, the aim of this study was to study the genotoxicity of carbon nanotubes in in vivo experiments on laboratory mice. For this, based on the method of single cell alkaline gel electrophoresis assay, studies were conducted to determine the effect of aqueous colloidal solutions of multiwalled carbon nanotubes on genotoxicity towards various tissues in laboratory mic

Genetic structure of populations of specially protected mollusk Cepaea vindobonensis (Mollusca, Gastropoda, Pulmonata) in the northeastern part of the modern-day range

A research study on the population structure of relict and specially protected species Cepaea vindobonensis Fer. (Mollusca, Gastropoda, Pulmonata) in the conditions of the northeastern part of the modern-day distribution range is conducted with the use of allozymes and DNA markers. Groups with both high and low levels of genetic diversity are reveale

The genetic structure of populations of the specially protected androsace kozo-poljanskii Ovsz. Species under the conditions of the Southern Central Russian upland based on DNA markers

Based on DNA markers (Inter simple sequence repeats (ISSR)) the state of the gene pools of 10 populations (438 individuals) of specially protected relict plant species androsace kozo-poljanskii Ovsz. Seu androsace villosa subsp. koso-poljanskii Fed. in the Southern Central Russian upland is studie

The assessment of the genetic structure of bush snail (fruticicola fruticum) populations based on the nonspecific esterases loci

Using the polymorphic esterases loci, the genetic structure of the gastropod mollusk Fruticicola (Bradybaena) fruticum Mull., most of which lives in the south of the Central Russian Upland, was studied. For comparison, the samples were taken from the Romania, the North Caucasus, the Ural and the Vyatka regions. A total of the 1668 individuals were investigated. Of the 28 stu died populations in 11 (39.3%), there was significant shortage of the heterozygotes. The level of the expected heterozygosity fluctuated in the range He = 0.116-0.454. Using the non-parametric statistics (Chao1-bc method and 1st order jackknife method), the populations with potentially high and low diversity of the multilocus genotypes were identified. The indicators of the genetic disunity between populations averaged Φst = 0.276, Fst = 0.292. The principal component analysis and the Mantel correlation criterion RM = -0.007 showed the absence of a reliable relationship between the geographical and genetic distance between populations, which indicates a violation of the isolation model by distance and confirms the thesis put forward by us that the urbanized forest-steppe landscape disrupts the natural migration processes, leads to the strong isolation and the genetic drift in the snail populations. At the same time, the phenomenon of increasing the degree of division of the populations against the background of reduced the allelic diversity, noted by us in many groups of bush snails, can be regarded as a shift in genetic equilibrium towards an increase in the interpopupulation diversity (according to the Wright model). The revealed absence of the effect of isolation by distance can be a consequence of the action of the stabilizing natural selection. The assumption of the dependence of the esterase alleles frequencies in the bush snail populations on the genetic (biochemical) characteristics of the food objects was proposed. The effective size, calculated using the Slatkin formula turned out to be comparable with the background, adventive and relict species of the terrestrial mollusks living in the study area (Ne = 2.2-7.6). © 2019 Eco-Vector LLC. All rights reserved