A search for Y-chromosomal species-specific markers and their use for hybridization analysis in ground squirrels (Spermophilus: Rodentia, sciuridae)

Ermakov, Oleg A.; Surin, V. L.; Титов, С. В.; Zborovsky, S. S.; Formozov, N. A.

doi:10.1134/s1022795406040107

Cited by 22 publications

(33 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because ground squirrels exhibit female philopatry (Mandier and Gouat ; Ermakov et al. , ), this result is congruent with the ecology of these two species. The overall patchy nature of populations (Stangl et al.…”

Section: Discussionsupporting

confidence: 55%

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

Thompson

Khan

Stangl

et al. 2013

Ecology and Evolution

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionsupporting

confidence: 55%

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

Thompson

Khan

Stangl

et al. 2013

Ecology and Evolution

View full text Add to dashboard Cite

show abstract

“…Fur thermore, this study [4] employed a series of tissue samples from individuals caught in areas of habitation shared by different species, which may have a hybrid ori gin. Cases of hybridization between S. fulvus, S. major, S. pygmaeus and S. suslicus in this area have been described previously [7][8][9].…”

mentioning

confidence: 99%

Phylogeny of genus Spermophilus and position of Alashan ground squirrel (Spermophilus alashanicus, Büchner, 1888) on phylogenetic tree of Paleartic short-tailed ground squirrels

2015

View full text Add to dashboard Cite

Phylogenetic relationships within a group of Paleartic short tailed ground squirrels (Spermophi lus), recently defined as genus, are not sufficiently clear and need a critical revision. Interspecies hybridiza tion, found in Eurasian Spermophilus, can affect the results of reconstruction of molecular phylogeny. Alas han ground squirrel position on the phylogenetic tree needs clarification. We analyzed eight nucleotide sequences of cytb gene of S. alashanicus and 127 sequences of other Spermophilus species form GenBank. S. alashanicus and S. dauricus close phylogenetic relationship, and their affinity to ancestral forms of the group are revealed. Monophyly of Colobotis subgenus was confirmed. Paraphyly of eastern and western forms of S. relictus was shown.

show abstract

“…Although the evolutionary consequences of hybridization can be deleterious, causing sterility or reduced fertility of offspring or resulting in a loss of genetic integrity and homogenization of gene pools (Rhymer and Simberloff, 1996), in some circumstances it may be beneficial by allowing the incorporation of novel genetic diversity and promoting adaptation to new environments or even speciation (Dowling and Secor, 1997;Martinsen et al, 2001;Salzburger et al, 2002;Smith et al, 2003). Although initially considered rare and usually deleterious among mammals, hybridization has been identified, to varying degrees, in various wild eutherian mammal taxa including cetaceans (Willis et al, 2004), seals (Lancaster et al, 2006;Kingston and Gwilliam, 2007), canids (Vila et al, 2003;Verardi et al, 2006), felids (Pierpaoli et al, 2003;Lecis et al, 2006), leporids (Thulin et al, 2006;MeloFerreira et al, 2007), martens (Kyle et al, 2003) and squirrels (Ermakov et al, 2006;Spiridonova et al, 2006). However, despite many macropodid marsupial species readily hybridizing in captivity (Close and Lowry, 1990), relatively few instances of natural hybridization have been reported in marsupials, with the exception of several parapatric rock-wallaby species (Briscoe et al, 1982;Eldridge et al, 1991;Eldridge and Close, 1992;Bee and Close, 1993).…”

Section: Introductionmentioning

confidence: 99%

Molecular detection of hybridization between sympatric kangaroo species in south-eastern Australia

et al. 2009

View full text Add to dashboard Cite

Introgressive hybridization has traditionally been regarded as rare in many vertebrate groups, including mammals. Despite a propensity to hybridize in captivity, introgression has rarely been reported between wild sympatric macropodid marsupials. Here we investigate sympatric populations of western (Macropus fuliginosus) and eastern (Macropus giganteus) grey kangaroos through 12 autosomal microsatellite loci and 626 bp of the hypervariable mitochondrial DNA (mtDNA) control region. M. fuliginosus and M. giganteus within the region of sympatry corresponded, both genetically and morphologically, to their respective species elsewhere in their distributions. Of the 223 grey kangaroos examined, 7.6% displayed evidence of introgression, although no F1 hybrids were detected. In contrast to captive studies, there was no evidence for unidirectional hybridization in sympatric grey kangaroos. However, a higher portion of M. giganteus backcrosses existed within the sample compared with M. fuliginosus. Hybridization in grey kangaroos is reflective of occasional breakdowns in species boundaries, occurring throughout the region and potentially associated with variable conditions and dramatic reductions in densities. Such rare hybridization events allow populations to incorporate novel diversity while still retaining species integrity.

show abstract

A search for Y-chromosomal species-specific markers and their use for hybridization analysis in ground squirrels (Spermophilus: Rodentia, sciuridae)

Cited by 22 publications

References 10 publications

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

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

Phylogeny of genus Spermophilus and position of Alashan ground squirrel (Spermophilus alashanicus, Büchner, 1888) on phylogenetic tree of Paleartic short-tailed ground squirrels

Molecular detection of hybridization between sympatric kangaroo species in south-eastern Australia

Contact Info

Product

Resources

About