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Ermakov, Oleg A.; Surin, V. L.; Титов, С. В.; Tagiev, A. F.; Lukyanenko, A. V.; Formozov, N. A.

doi:10.1023/a:1016395722664

Cited by 31 publications

(11 citation statements)

References 10 publications

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“…Analysis of the variation in the complete mtDNA control region suggests that the ground squirrels from the east of the distribution range display considerably lower genetic diversity as compared with the western populations of this species. Thus, our data agree with a recent estimation of the polymorphism in the left domain of speckled ground squirrel mtDNA control region from different parts of the distribution range [12]. The pooled genetic diversity of the eastern popula tions studied suggests that they are less successful as compared with the western populations.…”

Section: Resultssupporting

confidence: 91%

“…Our earlier bioacoustic analysis of the populations living in Moscow and Lipetsk regions revealed signifi cant between population differences in the alarm calls, which suggested the presence of considerable genetic differences between these populations [11]. This assumption has been confirmed by the data on polymorphism in the left domain of mtDNA control region (310 bp) of the speckled ground squirrel, namely, a considerable level of differences between 20 populations living in different parts of the species distribution range [12]. It has been found that the phy logeographic structure in the western part of the distri bution range is more pronounced as compared with…”

mentioning

confidence: 56%

“…The complete control region flanked by a fragment of the tRNA-Pro gene and the tRNA-Phe gene (total length, 1148 bp) was amplified using the primers MDL1 and H00651 [13]. Polymerase chain reaction (PCR) was conducted in a volume of 25 mL using the reagents from Dialat (Russia); the reaction mixture contained 5 pM of each primer, 0.1-0.2 µg of DNA, and ddH 2 O to the final volume.…”

Section: Methodsmentioning

confidence: 99%

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Within- and between-population polymorphism of the mtDNA control region of the speckled ground squirrel (Spermophilus suslicus)

et al. 2014

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Section: Resultssupporting

confidence: 91%

mentioning

confidence: 56%

Section: Methodsmentioning

confidence: 99%

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Within- and between-population polymorphism of the mtDNA control region of the speckled ground squirrel (Spermophilus suslicus)

et al. 2014

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“…The level of hybridization we documented between M. baibacina and M. sibirica is lower than what has been reported in Palaearctic Spermophilus, both in the proportion of hybrids in populations and in spatial coverage (Ermakov et al, 2002(Ermakov et al, , 2015Titov et al, 2005;Spiridonova et al, 2006;Ivanova et al, 2017). But in general, hybridization occurs more frequently in secondary contact zones within Palaearctic Marmota and Spermophilus than Nearctic Marmotini (Hird et al, 2010;Stangl et al, 2012;Frare et al, 2017;Leitner et al, 2017).…”

Section: Spatial Habitat and Behavioral Background Of Hybridizationcontrasting

confidence: 59%

“…In most other known cases of intense hybridization, contact zones were formed relatively recently as a result of an expansion of one or several species under influence of anthropogenic factors that transform the natural environment. Examples of this scenario are the contact zones of S. major with the neighboring species S. suslicus, S. fulvus, and S. pygmaeus (Ermakov et al, 2002) and I. parvidens-I. tridecemlineatus (Stangl et al, 2012).…”

Section: Spatial Habitat and Behavioral Background Of Hybridizationmentioning

confidence: 99%

A Study of Hybridization Between Marmota baibacina and M. sibirica in Their Secondary Contact Zone in Mongolian Altai

et al. 2021

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The role of hybridization as one of the factors of speciation in mammals has been underestimated for a long time, but now there is a lot of data on its impact in mammalian evolution. Hybridization of species often occurs in their secondary contact zones, which is a natural model for testing factors that ensure species integrity. Studies of hybrid zones are increasingly revealing the essential role of ecological and behavioral features both in initiating crossbreeding and in maintaining interspecific barriers. We studied the hybridization of two species of marmots Marmota baibacina and M. sibirica in the zone of sympatry in Mongolian Altai Mountains. We used a bioacoustic approach to determine the localization of individuals of different species and their cohabitation sites. Genetic typing with two diploid nuclear markers and one marker each of paternal and maternal lines was used to identify hybrids. Habitat preferences of marmots were studied to understand the conditions for the formation of heterospecific pairs. We found a high proportion of hybrid individuals in boulder screes where conditions for the formation of heterospecific pairs probably exist. Our data indicate the viability and fertility of F1 hybrids and their descendants. We hypothesize that the environmental preferences and behavioral features of both species of marmots are important factors that both create conditions for hybridization and limit hybrid dispersal.

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Multilocus analyses indicate a mosaic distribution of hybrid populations in ground squirrels (genusIctidomys)

Thompson

Khan

Stangl

et al. 2013

Ecology and Evolution

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DNA sequence data from mitochondrial cytochrome-b (Cytb) and Y-linked structural maintenance of chromosomes (SmcY) genes were combined with 478 nuclear loci obtained from amplified fragment length polymorphisms (AFLP) to assess the extent of hybridization and genetic spatial structure of populations in two hybridizing species of ground squirrel (Ictidomys parvidens and Ictidomys tridecemlineatus). Based on AFLP analyses of 134 individuals from 28 populations, 10 populations were identified that possessed hybrid individuals. Overall estimates of FST values revealed strong support for population structure in the Cytb data set; however, analyses of the SmcY gene and the AFLP data indicated ongoing gene flow between species. Pairwise FST comparisons of populations were not significant for the SmcY gene; although they were significant for the Cytb gene, indicating that these populations were structured and that gene flow was minimal. Therefore, gene flow between I. parvidens and I. tridecemlineatus appeared to be restricted to populations that exhibited hybridization. In addition, the fragmented nature of the geographic landscape suggested limited gene flow between populations. As a result, the distributional pattern of interspersed parental and hybrid populations were compatible with a mosaic hybrid zone model. Because ground squirrels display female philopatry and male-biased dispersal, the ecology of these species is compatible with this hypothesis.

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Cited by 31 publications

References 10 publications

Within- and between-population polymorphism of the mtDNA control region of the speckled ground squirrel (Spermophilus suslicus)

Within- and between-population polymorphism of the mtDNA control region of the speckled ground squirrel (Spermophilus suslicus)

A Study of Hybridization Between Marmota baibacina and M. sibirica in Their Secondary Contact Zone in Mongolian Altai

Multilocus analyses indicate a mosaic distribution of hybrid populations in ground squirrels (genusIctidomys)

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