Anton O. SvininUniversity of Tyumen · X-BIO
Anton O. Svinin
PhD
About
35
Publications
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154
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Citations since 2017
Introduction
Anton O. Svinin is a Senior Research Fellow at the University of Tyumen, Russia. His research focuses mostly on biology of amphibians from Northern Eurasia. Anton does research in Evolutionary Biology, Molecular Ecology, Cell Biology and Parasitology. He is currently examining the unique morphological deformations in water frogs also known as the “anomaly P”.
Additional affiliations
September 2016 - November 2016
November 2012 - November 2015
Education
September 2007 - June 2012
Publications
Publications (35)
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...
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...
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...
The anomaly P is a widespread morphological anomaly, which occurs in some groups of amphibians, caused by the trematode parasite Strigea robusta (Digenea: Strigeidae). This anomaly has been previously recorded in water frogs of the genus Pelophylax and toads of the genera Bufo and Bufotes. The anomaly P includes symmetrical polydactyly cases as a m...
The anomaly P is a mass morphological anomaly found in some populations of anuran amphibians (water frogs of the genus Pelophylax and toads of the genera Bufo and Bufotes) caused by the parasitic flatworm Strigea robusta. Minimum dose of cercariae for the appearance of the anomaly P remains unknown. However, it is important information for understa...
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...
Anomaly P is a polymorphic syndrome affecting some populations of European water frogs of the genus Pelophylax. It was discovered by French writer and biologist Jean Rostand in the late 1940s and studied by him during next 20 years. Novel records of the anomaly P “hotspots” with heavy forms had led to discovery of the cause. We have shown in experi...
The Lindholm rock lizard, Darevskia lindholmi, is the only member of the genus Darevskia whose range is restricted solely to Europe, representing a local endemism found only in the Crimean Mountains. In our study, we investigated the cytochrome b gene (mtDNA) of 101 D. lindholmi sequences from 65 Crimean localities, representing its entire range. W...
Kukushkin et al. Phylogeography of Darevskia lindholmi_Supplementary Figs
Knowledge about the distribution of living organisms on Earth is very important for many areas of biological science and understanding of the surrounding world. However, much of the existing distributional data are scattered throughout a multitude of sources, such as taxonomic publications, checklists and natural history collections and often, brin...
The structure and dynamic of mollusk communities, as well as environmental factors influencing them, were analysed under conditions of small oxbow lakes in the forest-steppe zone (a case of the Khoper river valley, Penza region). 19 species of mollusks were found in the studied water bodies. The oxbows were characterized by relatively low alpha-div...
The report provides data on granulomatous inflammation in the small intestine of Pelophylax ridibundus, ob-served in exophytic outgrowths (diverticulums) of duodenum and caused by Brandesia turgida. Amphibians were collected from Protected Areas (Privolzhskaya Lesostep’ State Nature Reserve, Penza region, and Sos-novaya Roscha Forest Park near the...
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...
The paper examines the effects of the antimicrobial agent triclosan on the functioning of the liver mitochondria of marsh frog (Pelophylax ridibundus (Pallas, 1771)). It was established that triclosan inhibits DNP-stimulated respiration of mitochondria and decreases respiratory control ratio. In addition, triclosan causes the collapse of the mitoch...
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...
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...
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...
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...
The article considers the comparative analysis of the functional activity of mitochondria isolated from the liver of grass snakes, Natrix natrix (Linnaeus, 1758) that were kept at different temperatures (23–26 °C and 4-5 °C). It was found that liver mitochondria of hypothermia-exposed grass snakes are characterized by weak coupling of oxidative pho...
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...
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...
A high level of biological diversity, including amphibians, is characteristic for Protected Areas. The group of the European green frogs has a special interest because they are characterised by unique genetic and ecological interactions in the process of hybridogenic reproduction. In 2000–2018 in the Middle Volga Region we studied green frogs in fi...
In summer 2016, we investigated Ostrovtsovskaya Lesostep’ (Penza region, Russia) and caught more than 130 specimens belonging to 4 species of anuran amphibians. We found a symmetric case of “hyperxanthism” of the eyes (a new type of anomaly among amphibians) in one Rana arvalis specimen, one asymmetric amely in Bombina bombina, and 21 specimens of...
In the Volga region and adjacent territories, 263 specimens of green toads from 63 localities were studied. Genome size analysis by means of flow DNA cytometry allowed the specimens from 16 localities to be
identified as the “western” (= viridis) form and the green toads from 20 localities as the “eastern” form (= variabilis or sitibundus). In the...
New data about distribution of the edible frog Pelophylax esculentus, diagnosed by the methods of morphometry, flow DNA-cytometry and molecular genetic analysis in 10 regions of the Volga River drainage are presented. Possible ways of the establishment of P. esculentus populations and factors limiting the distribution and abundance of these species...
Molecular-genetic analysis of green frogs (67 individuals of Pelophylax ridibundus and 63 ones of hybridogenic P. esculentus) from Mari El Republic (15 localities) and the Kirov Region (one locality) was performed by two (mitochondrial and nuclear) markers. Some part of the material (66 individuals) was studied by means of DNA flow cytometry. It is...
In 2007 - 2013, a total of 754 specimens were investigated from 15 localities situated in Mari El Republic and southern part of Kirovskaya Province (north-eastern part of the Pelophylax areas). We observed 4 types of morphological anomalies among specimens of marsh frog (polyphalangy, asymmetric and symmetric cases of polydactyly, brachidactyly), a...
The study of morphological structure of three populations of great crested newt from the Middle Volga region ( n = 113) was carried out. Sexual dimorphism was found only on characters TL and L (Mordovia, Mari El), Lcd (Mari El), WI and Ltc/L (Mordovia), Pa/Pp (Chuvashia, Mari El). Sexual differences on occurrence of phenocomplexes and phenotypes ar...
On the basis of the authors’ data and the ones obtained from other sources, the data on 11
species of amphibians and 5 species of reptiles on the territory of the Bolshaya Kokshaga reserve
are generalized in the article. For the first time, it has been stated that the reserve is the edible
frog’s habitat. The data on the number, distribution traits...
Three species of green frogs were identified in Mari El Republic by means of the DNA flow cytometry
analysis, namely: the marsh or lake frog, Pelophylax ridibundus (Pallas, 1771), the pool frog, P. lessonae
(Camerano, 1882), and the edible frog, P. esculentus (Linnaeus, 1758). The last species (of hybrid origin)
was reliably recorded in this territ...
Projects
Projects (4)
The anomaly P syndrome is a mass morphological anomaly occurred in some populations of Palaearctic amphibians of the genera Pelophylax, Bufo and Bufotes. These grotesque anomalies were first discovered by French scientist and writer Jean Rostand in 1952. Individuals with syndrome have symmetrical polydactyly, brachymely, hindlimbs flexions, outgrows and bony spikes. The study of the anomaly P was discontinued after Jean Rostand and did not resume for almost 50 years. In 2016, we found the anomaly P in Khopyor River drainage. We discovered that anomaly P in water frogs caused by trematode Strigea robusta (Digenea, Strigeidae) and the manifestation of anomaly P turned out to be dependent on the stage of development, cercariae dose, and the location of the cysts. We found the same effects in the Palaearctic toads of the genera Bufo and Bufotes, and found first description of heavy forms of the anomaly P in toads from Altai Mountains (Teletskoe Lake) in scientific literature (Yakovlev, 1984). Finally, we found selective effects of Strigea robusta on amphibians: infected tadpoles of the genus Rana have no anomalies in their morphology.
The project aimed to study structure, dynamic and functioning of aquatic ecosystems of the forest-steppe, formed and transformed by zoogenic processes; assess the role of such water bodies for biodiversity of territories with poor water resources; analyze the differences between beaver-made, natural and anthropogenic lentic ecosystems. The study pays attention to both abiotic (hydrology, hydrochemistry) and biotic (macrophytes, phytoplankton, zooplankton, benthos, nekton) components of water bodies.
Research of morphogenesis canalization drivers, evolutionary teratology, environmental health
