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Keywords = Lasiopodomys raddei

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15 pages, 3479 KiB  
Article
An Invisible Boundary between Geographic Ranges of Cryptic Species of Narrow-Headed Voles (Stenocranius, Lasiopodomys, Cricetidae) in Transbaikalia
by Tatyana V. Petrova, Ivan A. Dvoyashov, Yury A. Bazhenov, Ekaterina V. Obolenskaya and Andrey A. Lissovsky
Diversity 2023, 15(3), 439; https://doi.org/10.3390/d15030439 - 16 Mar 2023
Cited by 4 | Viewed by 2273
Abstract
The narrow-headed vole species complex is represented by Lasiopodomys gregalis and L. raddei, which probably diverged at the beginning of the Middle Pleistocene and came into secondary contact in the Transbaikal region. The current study analyzed mitochondrial gene cytochrome b, nuclear [...] Read more.
The narrow-headed vole species complex is represented by Lasiopodomys gregalis and L. raddei, which probably diverged at the beginning of the Middle Pleistocene and came into secondary contact in the Transbaikal region. The current study analyzed mitochondrial gene cytochrome b, nuclear gene BRCA1, and microsatellite data and was aimed at clarifying geographic ranges of these species and searching for hybrid zones between them. It turned out that the geographic range of L. raddei is almost surrounded by that of L. gregalis; these species are strictly parapatric without a single detected sympatry zone. Although in none of the tested populations did the BRCA1 genotyping contradict the pattern revealed by mitochondrial cytb, microsatellite loci showed traces of hybridization in several populations. Results of species distribution modeling indicated that these species are characterized by quite similar (caused by the same environmental factors), but nevertheless significantly different, ecological preferences. Full article
(This article belongs to the Special Issue Phylogeny and Phylogeography of the Holarctic)
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16 pages, 2596 KiB  
Article
Narrow-Headed Voles Species Complex (Cricetidae, Rodentia): Evidence for Species Differentiation Inferred from Transcriptome Data
by Tatyana Petrova, Maria Skazina, Aleksander Kuksin, Olga Bondareva and Natalia Abramson
Diversity 2022, 14(7), 512; https://doi.org/10.3390/d14070512 - 24 Jun 2022
Cited by 4 | Viewed by 2494
Abstract
The narrow-headed vole complex includes two cryptic species, Lasiopodomys raddei and L. gregalis, and three allopatrically-distributed lineages with obscure taxonomic ranks within the latter. Based on the RNA-seq data of 12 specimens, the current study aims to find the molecular mechanisms of intraspecies [...] Read more.
The narrow-headed vole complex includes two cryptic species, Lasiopodomys raddei and L. gregalis, and three allopatrically-distributed lineages with obscure taxonomic ranks within the latter. Based on the RNA-seq data of 12 specimens, the current study aims to find the molecular mechanisms of intraspecies differentiation and, in particular, reproductive isolation between analyzed groups. According to the results of the GO-enrichment analysis, about a hundred biological processes associated with genes with contrasting SNPs for L. gregalis and L. raddei were identified. Among them, processes of interspecific interactions, defense responses, responses to external stimuli, and the perception of chemical stimuli and smell were identified, indicating the likely existence of pre-copulatory behavioral and physiological mechanisms that contribute to reproductive isolation between cryptic species. An evaluation of the ratio of non-synonymous substitutions to synonymous ones showed evidence of selection in L. raddei compared to L. gregalis for a large part of the analyzed genes. Among the analyzed genes, genes with both weakening and intensifying selection were found. Full article
(This article belongs to the Special Issue Phylogeny and Phylogeography of the Holarctic)
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