• Home
  • Spartak Litvinchuk
Spartak Litvinchuk

Spartak Litvinchuk
Institute of Cytology of the Russian Academy of Sciences, St. Peterburg, Russia · Group of Genome Microevolution and Cytoecology

Ph.D.

About

257
Publications
91,607
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
3,745
Citations
Additional affiliations
January 2001 - present
Russian Academy of Sciences
Education
September 1985 - June 1992

Publications

Publications (257)
Article
Full-text available
Biodiversity analyses can greatly benefit from coherent species delimitation schemes and up-to-date distribution data. In this article, we have made the daring attempt to delimit and map described and undescribed lineages of anuran amphibians in the Eastern Palaearctic (EP) region in its broad sense. Through a literature review, we have evaluated t...
Conference Paper
Full-text available
Фауна и флора геотермальных источников Памира (Таджикистан, Афганистан и Китай) изучены крайне недостаточно и сведения о них носят фрагментарный характер. Взрослые земноводные и их личинки являются неотъемлемой частью биологического разнообразия этих экосистем. На Памире насчитывается около сотни известных термальных источников. В этих уникальных м...
Article
Full-text available
Latitudinal variations in species niche due to factors such as phenotypic plasticity and local adaptation pose fundamental problems for ecological niche modelling at large geographic scales. Species adaptation to varying climates across latitudes thus necessitates the latitudinal adjustment of climatic variables for incorporation into more accurate...
Article
The anomaly P is a mass morphological anomaly reported in some water frog populations across Europe. It was found that polydactyly is only a mild attenuated form of heavy cases of the anomaly P syndrome, which have strong deformations of the hindlimbs and, partly, forelimbs. It was shown that the anomaly P is caused by the trematode Strigea robusta...
Article
Full-text available
Bufo gargarizans is a polymorphic species that is widespread in East Asia. Populations of the species inhabiting various parts of the range differ significantly in morphological and physiological parameters. In the present study, we analysed comparative patterns of reproduction, growth, and development of this toad from two populations in northeast...
Article
Full-text available
Taxa with vast distribution ranges often display unresolved phylogeographic structures and unclear taxonomic boundaries resulting into hidden diversity. This hypothesis-driven study reveals the evolutionary history of Bufonidae, covering the phylogeographic patterns found in Holarctic bufonids from the West Gondwana to the phylogenetic taxonomy of...
Article
Full-text available
Old World tree frogs from the family Rhacophoridae, one of the most species-rich groups of amphibians worldwide, are becoming a model in ecological and evolutionary research, notably for their tremendous diversity of breeding systems. In this study, we provide the most comprehensive temporally and spatially explicit phylogeographical framework for...
Article
Full-text available
Technological developments now make it possible to employ many markers for many individuals in a phylogeographic setting, even for taxa with large and complex genomes such as salamanders. The banded newt (genus Ommatotriton) from the Near East has been proposed to contain three species (O. nesterovi, O. ophryticus and O. vittatus) with unclear phyl...
Article
Full-text available
We examined morphometric variation in green toads of the genus Bufotes using univariate and multivariate statistics in order to identify diagnostic characters. This study describes patterns of variation in two diploid (B. sitibundus and B. perrini) and a tetraploid (B. pewzowi) species and triploid hybrids of B. perrini and B. pewzowi distributed i...
Article
The slow-worm lizards (Anguis) comprise five species occurring throughout most of the Western Palearctic. Although these species are relatively uniform morphologically – with the exception of A. cephallonica, which exhibits a quite unique morphology – they are genetically deeply divergent. Here, we provide detailed distribution maps for each species...
Article
Full-text available
The genetic architecture of speciation, i.e. how intrinsic genomic incompatibilities promote reproductive isolation (RI) between diverging lineages, is one of the best-kept secrets of evolution. To directly assess whether incompatibilities arise in a limited set of large-effect speciation genes, or in a multitude of loci, we examined the geographic...
Article
Full-text available
We provide the first comprehensive data on the questionable distribution of the genus Pelophylax and the family Ranidae from Pa-kistan. Based on a literature review and two specimens of the genus from Tasp, Panjgur District in Pakistani Balochistan (USNM 26194-95), stored in the Smithsonian National Museum of Natural History, Washington, DC, USA, w...
Article
We report the discovery of a population of the exotic North African Water Frog Pelophylax saharicus around the Etang de Berre, on the Mediterranean coast of France, about 25 km north-west of Marseille. The animals had been originally identified as P. perezi or P. kl. grafi by a combination of acoustic and morphological characters and their true ide...
Article
Full-text available
The paper provides the first data about age structure and growth of the Zamda toad, Bufotes zamdaensis (Boulen-ger, 1882), from the Himachal Pradesh State (India). The study of age structure of toads was carried out using skeletochronology. The minimal and maximal ages in males of B. zamdaensis were 4 and 7 years, respectively, with mean age of 5.4...
Article
Full-text available
Background The Himalaya-Tibet orogen (HTO) presents an outstanding geologically active formation that contributed to, and fostered, modern Asian biodiversity. However, our concepts of the historical biogeography of its biota are far from conclusive, as are uplift scenarios for the different parts of the HTO. Here, we revisited our previously publis...
Article
Full-text available
Determining the range, status, ecology and behaviour of species from areas where surveys and samplings are uncommon or difficult to conduct is a challenge, such as in the Democratic People’s Republic of Korea (DPR Korea). Here we used genetic samples, field surveys, call recordings, photographic identification and literature review to estimate the...
Article
Full-text available
In Azerbaijan, the Hyrcanian wood frog (Rana pseudodalmatina) usually inhabits forests in the Talysh Mountains and the Lenkoran Lowland from-28 to 2265 m above sea level. Drier regions to the north and west of the Talysh Mountains limit the species distribution. The species can locally penetrate to a no forested zone in the northern and western foo...
Article
Full-text available
Aim – The amount of gene flow between parapatric species can be greatly variable depending on how species boundaries are maintained in respect to numerous genetic and ecological factors that affect the strength of reproductive isolation. We quantified this variability to understand its effect on the genetic integrity of a well-studied pair of hybri...
Preprint
Full-text available
Background The Himalaya-Tibet orogen (HTO) presents an outstanding geologically active formation that contributed to, and fostered, modern Asian biodiversity. However, our concepts of the historical biogeography of its biota are far from conclusive, as are uplift scenarios for the different parts of the HTO. Here, we revisited our previously publis...
Article
Full-text available
The edible frog, Pelophylax esculentus, is a hybrid form that reproduces via clonal propagation of only one of the parental genomes through generations of hybrids while the genome of other parental species is eliminated during gametogenesis. Such reproductive ability requires hybrids to coexist with one of the parental species or rarely both parent...
Article
Full-text available
The growing interest in the lability of sex determination in non-model vertebrates such as amphibians and fishes has revealed high rates of sex chromosome turnovers among closely related species of the same clade. Can such lineages hybridize and admix with different sex-determining systems, or could the changes have precipitated their speciation? W...
Article
Full-text available
In this paper we present results of laboratory reproduction of the Ladakh toad (Bufotes latastii) for three generations. Two pairs of animals, which were collected in April of 2013 in Jammu and Kashmir (India), became founders of a laboratory population. The first female gave offspring four times, while the second only once. The number of eggs in c...
Article
Full-text available
Background: Cases of polydactyly in natural populations of amphibians have attracted great interest from biologists. At the end of the 1940s, the French biologist Jean Rostand discovered a polymorphic syndrome in some water frog (Anura: Pelophylax) populations that included polydactyly and some severe morphological anomalies (he called it 'anomaly...
Article
Full-text available
The paper provided the first data about age structure and growth of the Lataste's toad, Bufotes latastii (Boulenger, 1882), from the Jammu and Kashmir State (India). The study of age structure of toads was carried out using skeletochronology. The minimal and maximal ages in males of B. latastii were 3 and 10 years, respectively, with mean age of 6....
Article
Full-text available
Chromosome set is one of the most important characteristics of a species. Despite the fact that amphibian karyotypes are usually very stable, some species are characterized by various variants of chromosomal polymorphism. We have studied karyotype of Hyla tsinlingensis from the Tsinling Mountains (China) and have compared it with karyotypes of othe...
Article
Full-text available
The use of ecological models enables determining the current distribution of species, but also their past distribution when matching climatic conditions are available. In specific cases, they can also be used to determine the likelihood of fossils to belong to the same species—under the hypothesis that all individuals of a species have the same eco...
Article
Full-text available
Alien species can strongly impact local environments and compete against native species, which can lead to their extinction. Marsh frogs of the Pelophylax ridibundus complex are one of the most invasive amphibians in Northern Eurasia. It was previously thought that three water frog species of the genus Pelophylax (the marsh frog, P. ridibundus, the...
Article
Full-text available
Because it is indicative of reproductive isolation, the amount of genetic introgression across secondary contact zones is increasingly considered in species delimitation. However, patterns of admixture at range margins can be skewed by the regional dynamics of hybrid zones. In this context, we posit an important role for phylogeographic history: hy...
Article
Full-text available
The anomaly P in green frogs was firstly found in 1952 in France by French writer and scientist Jean Rostand. Mild form of anomaly P manifestation includes polydactyly, while complex morphological transformations affect the fore and hindlimbs and include combinations of traits: polydactyly, brachymely, hind limb flexion, small additional limbs, bon...
Article
Full-text available
Distribution of Bufo eichwaldi in Azerbaijan was analyzed with the modeling application in Maxent. Based on 36 localities of the species, we developed a species distribution model for identification of suitable habitats. Two variables (annual precipitation and environmental habitat heterogeneity) accounted for 70% of the predicted range. The range...
Article
Full-text available
Subdivided Pleistocene glacial refugia, best known as “refugia within refugia”, provided opportunities for diverging populations to evolve into incipient species and/or to hybridize and merge following range shifts tracking the climatic fluctuations, potentially promoting extensive cytonuclear discordances and “ghost” mtDNA lineages. Here we tested...
Article
Full-text available
Here we present the first new data about the mysterious "anomaly P" of green frogs (genus Pelophylax) in about 50 years. We established that the gastropod Planorbarius corneus could be an intermediate host (or vector) of the infectious agent of the anomaly P. Symmetrical cases of polydactyly, the anomaly "cross" and heavy cases of the anomaly P, wh...
Article
Full-text available
A molecular multiplex PCR method for identification of East European green frog species (Pelophylax ridibundus, P. cf. bedriagae and P. lessonae) and their hybrids was developed. This simple and rapid method can be used for identification of species-specific mitochondrial and nuclear DNA. The method is based on species-specific differences in prima...
Article
Full-text available
The “anomaly P” was described in Palearctic water frogs of the genus Pelophylax by Jean Rostand as complex morphological anomalies of water frogs, including polydactyly, brachymely, hind limb oedema, bone outgrowths, spikes, flexions and additional limbs in the inguinal region. In 2016, the anomaly P syndrome was rediscovered in central Russia, con...
Article
Full-text available
Recent advances in the understanding of the evolution of the Asian continent challenge the long‐held belief of a faunal immigration into the Himalaya. Spiny frogs of the genus Nanorana are a characteristic faunal group of the Himalaya–Tibet orogen (HTO). We examine the phylogeny of these frogs to explore alternative biogeographic scenarios for thei...
Conference Paper
Full-text available
Hyla tsinlingensis-эндемик Китая. Её ареал состоит из двух изолированных участков. Ранее кариотипы у особей этого вида были изучены для обеих частей ареала, но хромосомный полиморфизм не был выявлен. Нами были изучены кариотипы у двух самцов и одной молодой особи с типовой территории этого вида в горах Циньлинь. Установлено, что кариотип H. tsinlin...
Article
Full-text available
Many closely related species are capable of mating to produce hybrid offspring, which are usually sterile. Nevertheless, altering the gametogenesis of hybrid offspring can rescue hybrids from sterility by enabling asexual reproduction. Hybridogenesis is one of the most complicated asexual reproductive modes, and it includes drastic genome reorganiz...
Article
Full-text available
In summer of 2018 the Center for Himalayan Research at the St. Petersburg Association of Scientists & Scholars organized an interdisciplinary expedition to central Nepal and south-western Tibet (China). Ten participants visited Kathmandu and Pokhara valleys as well Langtang area in Nepal, and, later, travelled across south-western Tibet from Kyiron...
Conference Paper
Full-text available
Background. The aim of the work was to study the heteromorphism of nucleolar organizers (NORs) and its correlations with sex chromosomes in different species of Anura. Materials and methods. NORs in karyotypes of 57 species of tailless amphibians (6 families, 14 genera) were studied. In karyotypes, we analyzed a number of NORs on each chromosome an...
Article
Full-text available
The “Manych-Gudilo” State Nature Regional Reserve was established in 2010 in Apanasenkovsky district of Stavropol region. The local fauna of mammals and birds is very well known, but amphibians and reptiles after the creation of this regional reserve have not been studied specifically. The aim of the paper is to identify the species composition and...
Article
Full-text available
Phylogeographic breaks can be viewed as regional hotspots of diversity where the genetic integrity of incipient species is put to the test. We focus on an understudied species transition from the Middle-East: the Dead Sea Rift in the Levant region, which presumably divided the tree frogs Hyla savignyi and H. felixarabica. Combining multilocus genet...
Article
Full-text available
Background. Being an interesting case of unusual reticulate evolution at the species level, polyploid speciation in Asian green toads of the genus Bufotes draws an attention of many researchers. The aim of the paper was to determine a sequence of events that could lead to origin of polyploid species in the genus. Materials and methods. Two diploid...
Article
Full-text available
The genomic era contributes to update the taxonomy of many debated terrestrial vertebrates. In an accompanying work, we provided a comprehensive molecular assessment of spadefoot toads (Pelobates) using genomic data. Our results call for taxonomic updates in this group. First, nuclear phylogenomics confirmed the species-level divergence between the...
Article
Full-text available
Cryptic phylogeographic diversifications are unique models to examine the role of phylogenetic divergence on the evolution of reproductive isolation, without extrinsic factors such as ecology. Yet, to date very few comparative studies were attempted within such radiations. Here, we characterize a new speciation continuum in a group of widespread Eu...
Article
Cryptic phylogeographic diversifications provide unique models to examine the role of phylogenetic divergence on the evolution of reproductive isolation, without extrinsic factors such as ecological and behavioural differentiation. Yet, to date very few comparative studies have been attempted within such radiations. Here, we characterize a new spec...
Article
Full-text available
This is the first record of specific morphological deviations in the marsh frog on the territory of Russia. Similar anomalies were discovered by Jean Rostand in the 1950s in France and named by him as the "anomaly P". Our observations were made on the territory of the Privolzhskaya Lesostep' Nature Reserve (Penza region, Central Russia) in 2016 and...
Article
Full-text available
The unidirectional natural transfer of mitochondrial (mt) DNA from Pelophylax lessonae into P. ridibundus is a common phenomenon in central Europe. Cases of mtDNA exchange between P. lessonae and other non-clonal species of the genus Pelophylax have been unknown so far. In this paper, we describe the first case of mtDNA transfer from P. cf. bedriag...
Article
Full-text available
Scutiger occidentalis is considered extinct in India. This species has been last reported from India about 40 years ago. We describe a new, genetically confirmed record of S. occidentalis obtained in October 2017 from Himachal Pradesh (India), representing the so far southernmost locality for the species. Based on 16 previously known localities of...
Article
Comparative molecular studies emphasized a new biogeographic paradigm for the terrestrial fauna of North Africa, one of the last uncharted ecoregions of the Western Palearctic: two independent east-west divisions across the Maghreb. Through a comprehensive phylogeography, we assessed how this model suits the genetic diversification documented for t...
Article
Full-text available
Several lines of evidence support that north-Italian and Ticinese tree frogs, recently called Hyla perrini, represent a distinct species, formerly considered as Hyla intermedia. However, a nomenclatural clause for electronic publishing of species names according to the Code of International Nomenclature caused that the new name has been unavailable...
Article
Full-text available
For the first time, somatic chromosomes of Bufo spinosus were described (2n = 22). It was close to the karyotypes of other West-Palearctic species of the genus Bufo and consisted of 10 large metacentric (V), 2 large submeta-centric chromosomes (SV), 8 small metacentric (v), and 2 small submetacentric chromosomes (sv): 10 V + 2 SV + 8 v + 2 sv, NF =...
Chapter
Full-text available
The genome size variability was studied with use of the method of fl ow DNA cytometry in 342 individuals from 64 localities in Turkmenistan and Uzbekistan. It was revealed 88 (26%) diploids, 3 (1%) triploids, and 251 (73%) tetraploids. The limits of variation of the character did not overlapped in representatives of all these three groups. We did n...
Conference Paper
Full-text available
Various definitions of Tibet (administrative, cultural, physico-geographical, etc.) are mentioned. Exact delimitation of the eastern border of natural Tibet in the Hengduan Shan Mountains is a serious problem. The amphibian fauna of Tibet (98 species from 30 genera and 11 families) mostly consists of the Oriental species. The composition of the fau...