A5089717520- Genetic diversity and population structure
- Plant and animal studies
- Avian ecology and behavior
- Ecology and Vegetation Dynamics Studies
- Wildlife Ecology and Conservation
- Genomics and Phylogenetic Studies
- Species Distribution and Climate Change
- Animal Ecology and Behavior Studies
- Geology and Paleoclimatology Research
- Marine and environmental studies
- Evolution and Paleontology Studies
- Travel-related health issues
- Toxoplasma gondii Research Studies
- Bartonella species infections research
- Pleistocene-Era Hominins and Archaeology
- Identification and Quantification in Food
- Amphibian and Reptile Biology
- Fish Ecology and Management Studies
- Vector-borne infectious diseases
- Geological Studies and Exploration
- Bird parasitology and diseases
- Fish Biology and Ecology Studies
State Hermitage Museum
2014-2024
Our analysis of the ND2 sequences revealed six clades within winter wrens (Troglodytes troglodytes). These corresponded to geographical regions: western Nearctic, eastern Asia, Nepal, Caucasus and Europe, differed by 3–8.8% sequence divergence. Differences among regions explained 96% variation in wren. individuals localities 3% variation, differences 1%. Grouping into subspecies instead did not change these proportions. Proliferation coincided with Early Middle Pleistocene glaciations. The...
We used maximum likelihood analysis of complete mitochondrial ND2 sequences (1041 bp) to clarify the taxonomy and relationships various species genera grass bush warblers. The tree revealed two clades One clade was comprised all four western Palearctic Locustella Asian Bradypterus . other included five eastern (including distinctive Sakhalin warbler amnicola ) marsh grassbird Megalurus pryeri African Australian little gramineus were distantly related their congeners. Therefore, current these...
Abstract Mountains host greater avian diversity than lowlands at the same latitude due to their of habitats stratified along an elevation gradient. Here we test whether this ecological heterogeneity promotes sympatric speciation. We selected accentors ( P runellidae), family associated with mountains alearctic, as a model system. Accentors differ in habitat/elevation preferences and south‐central Siberia H imalayan regions each 6 13 species family. used sequences mtDNA ND 2 gene intron 9 Z...
Phylogeographic studies of Holarctic birds are challenging because they involve vast geographic scale, complex glacial history, extensive phenotypic variation, and heterogeneous taxonomic treatment across countries, all which require large sample sizes. Knowledge about the quality phylogeographic information provided by different loci is crucial for study design. We use sequences one mtDNA gene, sex-linked intron, autosomal intron to elucidate scale patterns in lark genus Eremophila. The ND2...
Abstract We analysed mitochondrial DNA (mtDNA) sequences from 154 bluethroats ( Luscinia svecica ) sampled at 21 sites throughout much of their Eurasian range. A previously reported, single base‐pair mtDNA difference between L. s. and s . namnetum was inconsistent upon expanded geographical sampling. significant F ST value (0.29) an isolation‐by‐distance effect show the existence differentiation. Phylogenetic analysis haplotypes revealed northern southern groups, although lineage sorting is...
When isolated but reproductively compatible populations expand geographically and meet, simulations predict asymmetric introgression of neutral loci from a local to invading taxon. Genetic may affect phylogenetic reconstruction by obscuring topology divergence estimates. We combined analysis sequences one mtDNA 12 nuDNA with gene flow among 5 species Pacific Locustella warblers test for presence genetic its effects on tree Our data showed that was substantial asymmetrical all members...
Hewitt's paradigm for effects of Pleistocene glaciations on European populations assumes their isolation in peninsular refugia during glacial maxima, followed by re-colonization broader Europe interstadials. This is well supported studies poorly dispersing taxa, but highly dispersive birds have not been included. To test this paradigm, we use the dunnock ( Prunella modularis ), a Western Palaearctic endemic whose range includes all major refugia. MtDNA gene tree, multilocus species tree and...
We analyzed sequences of two mitochondrial DNA (mtDNA) gene regions (control region and ND2) totaling 1477 base‐pairs from 232 specimens the white wagtail Motacilla alba obtained 27 localities throughout Eurasia. Although overall haplotype diversity was relatively low (0.79) most common shared by 45% individuals, belonging to six subspecies, a high level population differentiation detected. The mtDNA tree revealed three clades: (1) individuals Krasnodar (belonging M. a. subspecies), (2) all...
The Common Chiffchaff Phylloscopus collybita is an abundant, polytypic Palearctic bird. Validity of some its subspecies controversial and birds from parts the species range remain unclassified taxonomically. relationships among populations different geographic areas have not been sufficiently explored with molecular data. In this study we analyzed four in 'chiffchaff complex' (Common Chiffchaff, Iberian P. ibericus, Canary Islands canariensis Mountain sindianus), patterns intraspecific...
Arctic warbler Phylloscopus borealis is one of several high‐latitude Passerines which are widely distributed across northern continent but restricted to the Beringian part other. Most species with such asymmetric intercontinental ranges monomorphic Beringia, suggesting either recent colonization second or considerable gene flow Bering Strait. only migratory in this group that has three different subspecies Beringia: Ph. b. (Scandinavia western south Mongolia), xanthodryas (Japan, Sakhalin,...
Abstract Aim Boreal forest bird species appear to be divided into lineages endemic each northern continent, in contrast Holarctic living open habitats. For example, the three‐toed woodpecker ( Picoides tridactylus ) and winter wren Troglodytes troglodytes have divergent Nearctic Palaearctic mitochondrial DNA clades. Furthermore, these species, next closest relative of Nearctic/Palaearctic sister is clade, suggesting that may been colonized from Nearctic. The aim this study test pattern...
Montane areas host high levels of diversity and endemism, these features are tied to habitat stratification along an elevational gradient. As such, montane often thought as model systems in which sympatric speciation can occur. To test this idea, we selected Phoenicurus redstarts, avian genus with extensive distribution across Eurasia, well Northwest Africa; nine the 14 species have distributions include Himalayas. We used sequences mtDNA ND2 cytochrome-b genes intron 9 Z chromosome specific...