| reliability assessment of null allele detection: inconsistencies between and within different methods. | microsatellite loci are widely used in population genetic studies, but the presence of null alleles may lead to biased results. here, we assessed five methods that indirectly detect null alleles and found large inconsistencies among them. our analysis was based on 20 microsatellite loci genotyped in a natural population of microtus oeconomus sampled during 8 years, together with 1200 simulated populations without null alleles, but experiencing bottlenecks of varying duration and intensity, and 1 ... | 2014 | 24119056 |
| [morphometric analysis of follicular structure of the thyroid gland after chronic low-dose gamma-irradiation]. | a quantitative study of follicle average cross-sectional diameter distribution was conducted in the thyroid gland (tg) of mouse like rodents (25 tundra voles, 24 cba mice, 16 wistar rats) after chronic exposure to low-level external y-radiation both in the environment and under the experimental condition (absorbed dose range 0.05-0.5 gy). spectrum analysis of tg follicle cross-sectional diameter distribution in the irradiated animals has demonstrated a universal regularity: in comparison with th ... | 2013 | 23898721 |
| arctic small rodents have diverse diets and flexible food selection. | the ecology of small rodent food selection is poorly understood, as mammalian herbivore food selection theory has mainly been developed by studying ungulates. especially, the effect of food availability on food selection in natural habitats where a range of food items are available is unknown. we studied diets and selectivity of grey-sided voles (myodes rufocanus) and tundra voles (microtus oeconomus), key herbivores in european tundra ecosystems, using dna metabarcoding, a novel method enabling ... | 2013 | 23826371 |
| distinct post-transcriptional regulation of igfbp1 gene by hypoxia in lowland mouse and qinghai-tibet plateau root vole microtus oeconomus. | our previous study revealed the particular expression patterns of insulin-like growth factor 1 (igf1) and insulin-like growth factor binding protein 1 (igfbp1) in the qinghai-tibet plateau root vole (microtus oeconomus) under hypoxic challenge. here we report the molecular mechanisms of igf gene regulation associated with adaptation to hypoxia. m. oeconomus igf1 and igfbp1 were shown to be highly conserved. hypoxia (8.0% o2, 6h) did not change the liver-derived igf1 expression in either m. oecon ... | 2013 | 23748030 |
| the role of colonization in the dynamics of patchy populations of a cyclic vole species. | the crash phase of vole populations with cyclic dynamics regularly leads to vast areas of uninhabited habitats. yet although the capacity for cyclic voles to re-colonize such empty space is likely to be large and predicted to have become evolved as a distinct life history trait, the processes of colonization and its effect on the spatio-temporal dynamics have been little studied. here we report from an experiment with root voles (microtus oeconomus) specifically targeted at quantifying the proce ... | 2013 | 23443355 |
| local and regional determinants of colonisation-extinction dynamics of a riparian mainland-island root vole metapopulation. | the role of local habitat geometry (habitat area and isolation) in predicting species distribution has become an increasingly more important issue, because habitat loss and fragmentation cause species range contraction and extinction. however, it has also become clear that other factors, in particular regional factors (environmental stochasticity and regional population dynamics), should be taken into account when predicting colonisation and extinction. in a live trapping study of a mainland-isl ... | 2013 | 23437137 |
| individual age and odontologic characteristics of root vole. | | 2017 | 23129279 |
| [characteristics of erythrocyte lipids in blood of tundra voles (microtus oeconomus pall.) inhabiting areas with increased natural radioactivity]. | interrelations between the lipid characteristics of the blood erythrocytes and 226ra accumulation in the body of tundra voles (microtus oeconomus pall.) inhabiting areas with different levels of the radiation background were investigated. it is shown that the ratio of the phospholipid (pl) fractions which cause the blood erythrocyte structure depends on the phase of the population cycle, as well as on the sex and age of tundra voles. the statistically significant interrelation between lysoforms ... | 2016 | 22279775 |
| [adaptive reactions of dehydrogenation processes in root voles during additional impacts of the physical nature]. | variations of the dehydrogenation enzyme activity (succinate dehydrogenase, pyruvate dehydrogenase, lactate dehydrogenase) in the heart muscle, liver and brain of root voles (microtus oeconomus pall.) and their progeny associated with additional stress effects (chronic low-level gamma-irradiation, short-term exposure to cold) have been studied. root voles (parents) were caught in the areas with a normal and high-level natural radioactivity in the republic of komi. it has been revealed that the d ... | 2016 | 22279768 |
| is there a linkage between metabolism and personality in small mammals? the root vole (microtus oeconomus) example. | significant inter-individual variation in the rate of animal metabolism is a widespread phenomenon that has started to accumulate general interest. here we follow recent calls to focus on linkage between the variation in energy metabolism and animal personality. by using wild caught root voles as a study species, we examined the relationship between the behavioral patterns (assessed in open field test) and resting metabolic rate (rmr), both of which are known to show large individual differences ... | 2011 | 21536058 |
| effects of individual condition and habitat quality on natal dispersal behaviour in a small rodent. | 1. individuals should benefit from settling in high-quality habitats, but dispersers born under favourable conditions have a better physical condition and should therefore be more successful at settling in high-quality habitats. 2. we tested these predictions with root voles (microtus oeconomus) by a manipulation of individual condition through litter-size enlargement and reduction during lactation combined with a manipulation of habitat quality through degradation of the vegetation cover. we ac ... | 2011 | 21521215 |
| [action of the radioactive environment contamination on the age changes of the lipid peroxidation state in the rodent tissues]. | influence of the environment radioactive contamination on the age changes of the lipid peroxidation state in the microtus oeconomus tissues (rodents caught in the komi republic areas and in the chernobyl accident zone) was studied. the data show that action extent depends on the external y-radiation level in the trapping areas, the animal sex and the supply of the tissue lipids by antioxidants. | 2010 | 21137215 |
| [correlation of phospholipid composition and physicochemical characteristics of lipids in tissues of the root vole microtus oeconomus of different ages]. | there was performed a comparative analysis of phospholipids and of lipid physicochemical characteristics in spleen, blood erythrocytes, and liver of the root voles caught in the natural environmental habitation at different phases of the population cycle, as well as of the animals born and raised throughout the entire life in vivarium, depending on the animals' sex and age. the age-related changes in the phospholipid composition have been established to correlate with lipid physicochemical chara ... | 2010 | 20799606 |
| self-grooming induced by sexual chemical signals in male root voles (microtus oeconomus pallas). | sniffing is one-way animals collect chemical signals, and many males self-groom when they encounter the odor of opposite-sex conspecifics. we tested the hypothesis that sexual chemical signals from females can induce self-grooming behavior in male root voles (microtus oeconomus pallas). specifically, we investigated the sniffing pattern of male root voles in response to odors from the head, trunk, and tail areas of lactating and non-lactating females. the self-grooming behavior of males in respo ... | 2010 | 20117186 |
| analysing diet of small herbivores: the efficiency of dna barcoding coupled with high-throughput pyrosequencing for deciphering the composition of complex plant mixtures. | in order to understand the role of herbivores in trophic webs, it is essential to know what they feed on. diet analysis is, however, a challenge in many small herbivores with a secretive life style. in this paper, we compare novel (high-throughput pyrosequencing) dna barcoding technology for plant mixture with traditional microhistological method. we analysed stomach contents of two ecologically important subarctic vole species, microtus oeconomus and myodes rufocanus, with the two methods. dna ... | 2009 | 19695081 |
| multiple paternity in free-living root voles (microtus oeconomus). | we used 10 microsatellite loci to determine the mating system and male reproductive success in a natural population of the root vole (microtus oeconomus). by genotyping 21 females and their 111 offspring (5.28+/-0.27 s.e. pups per female), we found evidence for multiple paternity in 38% of the litters sired by two or three males. paternity was not significantly skewed away from the null expectation of equal proportions of offspring sired in any of the multiple-sired litters, and the most success ... | 2009 | 19482071 |
| [dependence of response reaction of root voles to low-intensity irradiation on the initial state of the tissue antioxidant system]. | there has been studied the response of antioxidant (ao) reaction of the tissue system of the root voles microtus oeconomus pall. whose parents belonged to the populations long inhabiting the republic komi regions with different degrees of radioactive contamination on an additional radiation action at low doses. differences have been revealed in the phospholipid content, activities of ao defense, intensities of processes of lipid peroxidation (lpo) in tissues of the vole offspring caught in the c ... | 2008 | 18669281 |
| [the age characteristics of lipid peroxidation in tissues from wild rodents]. | the comparative analysis of the phospholipid composition and the physics-chemical characteristics of the spleen, blood erythrocytes and liver lipids of wild rodents of different age (microtus oeconomus pall.) was carried out. the interrelation between the age changes of the phospholipid composition in spleen and/or the antiperoxide activity and the content of peroxides in lipids was shown. the scale and direct of the age changes of the phospholipid composition depend on the tissue type, basic le ... | 2008 | 19432200 |
| biological consequences of increased natural radiation background for microtus oeconomus pall. populations. | the results of long-term investigations (1981-1999) on the state of microtus oeconomus pall. (tundra vole) population, living under the increased natural radiation background for a long time (for more than 100 generations), are presented. population density dynamics, morphophysiological parameters, state of the lipid peroxidation regulatory system in different tissues and the cytogenetic effects in bone marrow cells of animals have been analyzed. it is shown that tundra voles from the studied ra ... | 2007 | 17467125 |
| [morphological variability of microtus oeconomus pallas (rodentia, rrvicolidae) from baikal region]. | the analysis of morphological variability of the ten samples of microtus oeconomus from islands of baikal and adjacent regions gas shown, that island samples differ from continental ones by complex of parameters, defining proportions of a skuul, mainly, proportions of an auditory region. island samples also differ higher indexes of complexity and asymmetry of morphotypes of the third upper molar. an environment of the baikal islands differ absence of the damp habitats preferred microtus oeconomu ... | 2016 | 17168467 |
| photoperiodic regulation in energy intake, thermogenesis and body mass in root voles (microtus oeconomus). | the present study was designed to examine whether photoperiod alone was effective to induce seasonal regulations in physiology in root voles (microtus oeconomus) from the qinghai-tibetan plateau noted for its extreme cold environment. root voles were randomly assigned into either long photoperiod (ld; 16l:8d) or short photoperiod (sd; 8l:16d) for 4 weeks at constant temperature (20 degrees c). at the end of acclimation, sd voles showed lower body mass and body fat coupled with higher energy inta ... | 2006 | 17049448 |
| small rodent winter survival: snow conditions limit access to food resources. | 1. in fennoscandia during winter small rodents spend most of their time in the subnivean space, between the snow cover and the ground. the subnivean space is probably not a uniform habitat, but broken into accessible and inaccessible patches by ice covering the vegetation. this might reduce access to otherwise available food resources. 2. to test whether ice formations reduce access to food and thus limit winter survival of small rodents, we conducted an experiment where we increased subnivean s ... | 2006 | 16903053 |
| seasonal regulations of energetics, serum concentrations of leptin, and uncoupling protein 1 content of brown adipose tissue in root voles (microtus oeconomus) from the qinghai-tibetan plateau. | survival of small mammals in winter requires proper adjustments in physiology, behavior and morphology. the present study was designed to examine the changes in serum leptin concentration and the molecular basis of thermogenesis in seasonally acclimatized root voles (microtus oeconomus) from the qinghai-tibetan plateau. in january root voles had lower body mass and body fat mass coupled with higher nonshivering thermogenesis (nst) capacity. consistently, cytochrome c oxidase activity and mitocho ... | 2006 | 16786335 |
| male turnover reduces population growth: an enclosure experiment on voles. | turnover of individuals is assumed to cause disruptions of social organization, followed by reduced reproduction and survival. we tested how male turnover (removal of resident males and their replacement by unfamiliar males) affected population performance in experimental root vole (microtus oeconomus) populations. the treatment simulated predation of adult males, with the subsequent replacement by immigrants, and provided insight into the interaction between extrinsic (i.e., predation) and intr ... | 2006 | 16634299 |
| [complex estimation of thyroid gland state in tundra voles, inhabiting the natural radioactive polluted sites]. | behow is presented the complex state of thyroid gland of tundra voles living in high level natural radioactivity conditions (ukhta region of komi republic) by morphological and functional criteria. high sensitivity of thyroid gland under natural chronic irradiation of whole organism is noticed. the essential changes in the morphological structure and in the hormone level of the thyroid gland are found in animals, which live for a long time in the conditions of the radioactive pollution. it is de ... | 2016 | 16080630 |
| density-dependent dispersal and spatial population dynamics. | the synchronization of the dynamics of spatially subdivided populations is of both fundamental and applied interest in population biology. based on theoretical studies, dispersal movements have been inferred to be one of the most general causes of population synchrony, yet no empirical study has mapped distance-dependent estimates of movement rates on the actual pattern of synchrony in species that are known to exhibit population synchrony. northern vole and lemming species are particularly well ... | 2005 | 16024345 |
| effects of peripheral ghrelin on the carbohydrate and lipid metabolism of the tundra vole (microtus oeconomus). | ghrelin is a novel orexigenic peptide hormone. in humans and rodents, it increases food intake and its levels are reduced in obesity but increased in fasting. it is an antagonistic signal to leptin informing the central nervous system about negative energy balance. the tundra vole (microtus oeconomus) is an interesting model to study the effects of ghrelin, as it is poorly adapted to fasting. in this study, 10 male voles were injected with intraperitoneal ghrelin at 10 microg kg(-1)day(-1) for f ... | 2004 | 15302267 |
| [monitoring of tundra vole (microtus oeconomus pall.) population inhabiting areas with increased radiation background]. | the data of complex examinations of morphophysiological state of tundra vole (microtus oeconomus pall.), the lipid peroxidation (lpo) processes and the energy exchange in their organs, the cytogenetic analysis of marrow cells and the process of multiplication in populations inhabiting areas with increased natural radiation background more 50 years are generalized. the data obtained support the existence of qualitative differences of tundra vole subpopulations inhabiting control and radioactive n ... | 2016 | 15287255 |
| [spatiotemporal dynamics of the vole populations in heterogeneous habitats of the iremel mountain range]. | specific features of seasonal changes in the demographic structure and distribution of three vole species were studied in heterogeneous, qualitatively different habitats of three altitudinal belts in the southern ural. the results showed that the fauna of small mammals in the mountain-forest, subgoltsy, and mountain-tundra belts of the iremel' mountain range could be regarded as metapopulations of the northern red-backed vole, large-toothed red-backed vole, and root vole, and the fauna of each b ... | 2016 | 15131988 |
| reproduction of the tundra vole (microtus oeconomus) with dietary phytosterol supplement. | phytosterols (ps) are plant-derived compounds with estrogenic activity in vitro and beneficial effects on the serum lipid profile in vivo. in nature, ps exposure can derive from pulp mill effluents. the effects of a pulp-mill derived ps mixture on the reproduction, endocrine variables and enzyme activities of the tundra vole (microtus oeconomus) were investigated in a two-generation study. the cumulative food intake of ps-treated females was higher than in the control group supporting previous r ... | 2004 | 15110103 |
| genetic consequences of pleistocene glaciations for the tundra vole (microtus oeconomus) in beringia. | repeated glacial events during the pleistocene fragmented and displaced populations throughout the northern continents. different models of the effects of these climate-driven events predict distinct phylogeographic and population genetic outcomes for high-latitude faunas. the role of glaciations in (i) promoting intraspecific genetic differentiation and (ii) influencing genetic diversity was tested within a phylogeographic framework using the rodent microtus oeconomus. the spatial focus for the ... | 2004 | 14653795 |
| melatonin and the wintering strategy of the tundra vole, microtus oeconomus. | short photoperiod induces physiological changes connected to the wintering of the tundra vole, microtus oeconomus. the aim of the present study was to investigate the effects of continuous melatonin treatment on selected hormones and enzyme activities associated with energy metabolism in the species. liver, kidney, and muscle glycogen concentrations and glycogen phosphorylase activities, as well as liver and kidney glucose-6-phosphatase and lipase esterase activities were determined. plasma lept ... | 2002 | 12130797 |
| [the influence of population factors on phospholipid content of different tissues in lemmings microtus oeconomus in their natural habitat]. | | 2006 | 12070911 |
| microsatellite analysis of population structure and genetic differentiation within and between populations of the root vole, microtus oeconomus in the netherlands. | eight microsatellite markers for the root vole (microtus oeconomus) were developed to assess the amount of genetic variation for nine dutch root vole populations from four different regions, and to evaluate the degree of differentiation and isolation. all eight microsatellite loci were found to be highly variable with observed heterozygosity values ranging from 0.61 to 0.82. these values are similar to those observed for more distant populations from norway, finland and germany. therefore, the p ... | 2000 | 11050559 |
| hippocampal mossy fibers and swimming navigation learning in two vole species occupying different habitats. | we showed previously for mice that size differences of the infrapyramidal hippocampal mossy fiber projection (iip-mf) correlate with spatial learning abilities. in order to clarify the role of the iip-mf in a natural environment, we studied the bank vole (clethrionomys glareolus), adapted to a wide range of different habitats, and the root vole (microtus oeconomus), living in homogenous grassland habitats with small home ranges. morphometry on timm-stained horizontal brain sections of six c. gla ... | 2000 | 10706213 |
| population dynamic and genetic consequences of spatial density-dependent dispersal in patchy populations. | predictions about sex-specific, spatial density-dependent dispersal and their demographic and genetic consequences were tested in experimental populations of root voles (microtus oeconomus). each population consisted of two demes inhabiting equal-sized habitat patches imbedded in a barren matrix area. we used a neutral two-allele allozyme marker to monitor gene flow. initially, the two demes were genetically distinct and had different densities so that the size of a high-density deme (genotype b ... | 2000 | 10686164 |
| foraging behaviour of the root vole microtus oeconomus in fragmented habitats. | the effect of habitat fragmentation on spatial foraging behaviour in the root vole microtus oeconomus was investigated in seven experimental populations. four of the populations were established in large, continuous blocks (30 × 95 m) of meadow habitat (treatment plots), whereas the three remaining populations had six small rectangular habitat fragments (30 × 7.5 m) with variable inter-fragment distances (control plots). both the small habitat fragments and the large continuous habitat were embe ... | 1999 | 28308563 |
| causes and consequences of natal dispersal in root voles, microtus oeconomus. | to test the causes and consequences of variation in natal dispersal in root voles we released 53 matrilines (mothers with newly weaned litters) separately in field enclosures, during nine consecutive periods. the matrilines could disperse and distribute themselves among three pre-emptied habitat patches. two dispersal measures were recorded: short-distance dispersal defined as individuals immigrating to a neighbouring patch, and long-distance dispersal defined as unsettled individuals captured a ... | 1998 | 9933531 |
| effects of temperature and photoperiod on thermogenesis in plateau pikas (ochotona curzoniae) and root voles (microtus oeconomus). | we examined the effects of temperature and photoperiod on metabolic thermogenesis and the thermogenic characteristics of brown adipose tissue in plateau pikas (ochotona curzoniae) and root voles (microtus oeconomus), the dominant species of small mammals in the alpine meadow ecosystems on the qinghai-tibetan plateau. pikas and voles were acclimated in the following groups: (1) long day-warm temperature (16l:8d, 23 degrees c) (2) long day-cold temperature (16l:8d, 5 degrees c), (3) short day-warm ... | 1999 | 10093908 |
| the effects of experimental habitat destruction and patch isolation on space use and fitness parameters in female root vole microtus oeconomus. | the aim of this study was to test whether experimentally induced destruction and fragmentation of habitat and varying degrees of patch isolation applied to 11 experimental populations of root voles affected space use and fitness parameters in radio-tracked females. it was predicted that the habitat destruction would disrupt the spatiosocial relations between breeding individuals, which, in turn, would cause lowered survival and reproductive success. different degrees of patch isolation were expe ... | 1998 | 26412373 |
| [embryonic malformations in rodents in forest communities of the bryansk region exposed to radioactive pollution]. | embryonic malformations have been described and classified in small forest rodents (microtus oeconomus, clethrionomys glareolus), which had several generations living on the radioactively contaminated territory and were exposed to small doses of radiation (140-200 mkr/h). | 2016 | 9467640 |
| [the ectoparasite fauna of the root vole (microtus oeconomus pall.) on the territory of the priluki preserve in byelarus]. | there are 27 ectoparasites species recorded now on the root vole, microtus oeconomus in byelorussia. among them, 14 species are recorded for the first time in the territory of the republic. | 2010 | 8975211 |
| diel pattern of locomotor activity in populations of root voles, microtus oeconomus. | surface locomotor activity of root voles (microtus oeconomus) during summer and autumn was recorded with passage-counters in four experimental populations in 0.5 ha outdoor enclosures. populations differed considerably with respect to density, geographical origin and social behavior of animals, and year of observation. the general characteristics of diel activity patterns, however, were very similar among populations. root voles were generally more active during daytime than during the night, an ... | 1995 | 7488759 |
| the curious normality of the synaptic association between the sex chromosomes of two arvicoline rodents: microtus oeconomus and clethrionomys glareolus. | in all eight species of arvicoline (microtine) rodents previously described, the x and y chromosomes have remained asynaptic throughout pachynema. since synapsis is presumed to be a prerequisite for crossing over, it has been concluded that the sex chromosomes in these species are also achiasmatic, but the mechanism(s) of their disjunction remains an enigma. their asynaptic, achiasmatic condition has been attributed to loss of the pseudoautosomal region (borodin et al. 1991; carnero et al. 1991; ... | 1994 | 8083057 |
| [seasonal changes in the brain and skull sizes of small mammals]. | a comparative study of seasonal-age dynamics of brain size in six small mammal species, clethrionomys glareolus, c. rutilus, microtus oeconomus, m. gregalis (rodentia); sorex araneus, s. minutis (insectivora) has been carried out. the analysis of seasonal changes in brain weight confirms the existence of autumn-winter regression of brain weight, which takes place at the organism level. the regression is less pronounced in voles than in shrews. the decrease in brain weight both in voles and in sh ... | 2006 | 2800709 |
| the response of spermatogonia and spermatocytes of the northern vole microtus oeconomus to the induction of sex-chromosome nondisjunction, diploidy and chromosome breakage by x-rays and fast fission neutrons. | microtus males were exposed to different doses of 250 kv x-rays or fast fission neutrons of 1 mev mean energy. early (= round) spermatids were analyzed for the presence of extra sex chromosomes, diploidy and micronuclei at different time intervals corresponding with treated differentiating spermatogonia and spermatocytes. induction of nondisjunction of sex chromosomes could not be detected. in contrast, induction of diploids by both types of radiation was statistically significant at all samplin ... | 1989 | 2642602 |
| [cytogenetic research on micropopulations of the root vole (microtus oeconomus pall.) living under various radioecological habitat conditions]. | percentage of aneuploid cells and that of cell with chromosome aberrations in microtus oeconomus pall. living in areas with the enhanced radiation background (the dose of external radiation is 50 times and that of internal irradiation of bone marrow by incorporated 226ra 10 times higher than the controls) exceeds significantly (p less than 0.05) the control values. it is concluded that mutations occur in the experimental animals more frequently than in the controls. | 2013 | 3041438 |
| [effect of chronic gamma irradiation on dehydrogenase activity in the tissues of root voles and their progeny dwelling in a habitat with increased radioactivity]. | chronic gamma-irradiation during 3.5 and 6 months (at a dose = rate of 46.2 pc/kg x c) of microtus oeconomus living in conditions of normal and increased (by 50-100 times) gamma-radiation background, and of their progeny (the 1st, 2nd, 3d, and 4th generations) causes in homogenates of cardiac muscle, liver, and brain different changes in activity of succinate dehydrogenase (1.3.99.1, ec), pyruvate dehydrogenase (1.2.4.1, ec), and lactate dehydrogenase (1.1.1.27, ec) associated with the discordan ... | 2006 | 3554319 |
| [embryonic mortality of the root vole as an index of the effect of small doses of natural radioactivity on genetic processes in populations]. | a study was made of the pre- and post-implantation death of (f2--f4) microtus oeconomus progeny whose parents lived in territories where natural radiation background was increased (an exposition dose-rate of 3.6-144.0 pc/kg x s). the spontaneous rate of pre- and post-implantation death of progeny of irradiated (experimental) animals was higher than that of intact ones (control). the animals kept in conditions of chronic irradiation (46.2 pc/kg x s) exhibited a more pronounced discrepancy in embr ... | 2006 | 3547461 |
| centric fission in microtus oeconomus. a new locality in south east norway. | | 1986 | 3546213 |
| centric fission in microtus oeconomus. a new locality in south east norway. | | 1986 | 3539888 |
| [effect of low doses of ionizing radiation on bone marrow cell chromosomes in microtus oeconomus pall]. | it is shown that microtus oeconomus pall. living in conditions of enhanced natural radioactive background do not suffer from the increased radioactivity with regard to the induction of cytogenetic disturbances in bone marrow cells. it is supposed that these animals are more radioresistant than microtus oeconomus pall. living in vivaria. | 2006 | 3909214 |
| [cytogenetic effect of the action of apretana on the bone marrow cells of microtus oeconomus]. | a frequency of aneuploid cells and mitotic activity induced in bone marrow cells of microtus oeconomus by apretan was examined. treatment with doses 10 g per kg of the weight increased the frequency of aneuploidy from 5.4 to 29.6% and that of the mitotic activity two times. the possible reasons for these data are discussed. | 1985 | 3899860 |
| [effect of an increased level of natural radioactivity on the glycogen content of peripheral blood leukocytes in microtus oeconomus pall]. | in experiments on microtus oeconomus pall., living in natural conditions with normal (0.72-1.08 pa/kg) and increased (3.6-1440 pa/kg) levels of external gamma-irradiation and affected by numerous incorporated radionuclides, the differences were detected, by the cytochemical method, both in the total glycogen content of leucocytes and in the type of grouping of cells depending on the degree of their saturation with polysaccharide. | 2006 | 6393207 |
| [effect of increased natural radioactivity on bone marrow morphology of microtus oeconomus pall]. | it was established that microtus oeconomus pall. living in territories with the increased radiation background exhibit focal myeloid hyperplasia in the bone marrow, changes in the maturation indices of erythroid and myeloid elements, increase in number of karyocytes due to the increase in their mitotic activity. it is suggested that activation of vole haemopoiesis is an adaptive reaction of the organism to the effect of the radioecological factor. | 2013 | 6374747 |
| [comparative ultrastructural study of the inner medullary zone of the kidney of rodents with varying water access in the habitat environment]. | studies have been made on the papillary zone of the kidney in wild rodents microtus oeconomus, m. afganus, nesokia indica and rhombomus opimus, representing related taxonomic species but differing with respect to accessibility to water. in animals with high concentrating capacity, pronounced peculiarities of ultrastructure of descending and ascending parts of henle's loop, thin epithelial layer in the collecting tubules and poor development of interstitial tissue account for higher level of wate ... | 2006 | 7043961 |
| [gamasid ticks of small mammals in the charskaya basin (gamasoidea)]. | zooparasitological investigation of small mammals (17 species) was carried out in one of the regions of construction of the baikal-amur main line, charskaya hollow. 8475 gamasid mites belonging to 8 families and represented by 25 species were collected. in addition, in the nests of the northern redbacked vole and root vole there were found gamasid mites belonging to 6 families. the mass species, haemogamasus ambulans thorell and hirstionyssus isabellinus oud., were recorded from all landscape zo ... | 2007 | 481901 |
| atherosclerosis in lemmings and voles fed a high fat, high cholesterol diet. | two species of lemmings and two species of voles were fed a high fat, high cholesterol diet for several months. clethrionomys rutilus had a moderate (2x) rise in serum cholesterol while microtus oeconomus had a marked increase (5x); dicrostonyx stevensoni and dicrostonyx rubricatus had extreme increases (8x and 11x, respectively). typical lesions of atherosclerosis were observed in all species, but d. rubricatus had significantly more severe lesions. hepatic fatty infiltration was the principal ... | 1979 | 383113 |
| [micronuclei in the peripheral blood cells of microtus oeconomus pall. that inhabit areas with enhanced natural radioactivity]. | | 2006 | 368873 |
| physiological responses to hypoxia in the tundra vole. | | 1974 | 4415072 |
| [blood plasma esterases of tundra voles (microtus oeconomus), living in conditions of increased levels of natural radiation]. | | 2006 | 4780337 |
| [blood plasma proteins of microtus oeconomus voles living under conditions of increased natural background radiation]. | | 2003 | 5031437 |
| in vitro chromosome studies in the root vole (microtus oeconomus). | | 1970 | 5535795 |
| chromosome polymorphism in the root vole (microtus oeconomus). | | 1970 | 5525814 |
| [the action of small doses of radiation and incorporated naturally radioactive elements on spermatogenesis of microtus oeconomus in natural conditions]. | | 1965 | 5889202 |
| [systematization and nomenclature of microtus oeconomus pall.; mammalia muridae]. | | 1951 | 24541426 |
| taxonomic position of chinese voles of the tribe arvicolini and the description of 2 new species from xizang, china. | china has 26 species in the tribe arvicolini. the taxonomic status of these voles remains controversial despite much effort. herein, we evaluate the taxonomic position of 22 species plus 2 unidentified taxa using mitochondrial dna gene sequences (cytb + co1). we also evaluate 18 species and 2 unidentified taxa using morphological data. phylogenetic analyses of cytb resolve monophyly for the genera alexandromys, lasiopodomys, microtus, neodon, proedromys, and volemys with strong support. stenocra ... | 2017 | 29674783 |
| identification of a novel hantavirus strain in the root vole (microtus oeconomus) in lithuania, eastern europe. | hantaviruses are zoonotic pathogens that can cause subclinical to lethal infections in humans. in europe, five orthohantaviruses are present in rodents: myodes-associated puumala orthohantavirus (puuv), microtus-associated tula orthohantavirus, traemmersee hantavirus (trav)/ tatenale hantavirus (tatv)/ kielder hantavirus, rat-borne seoul orthohantavirus, and apodemus-associated dobrava-belgrade orthohantavirus (dobv). human puuv and dobv infections were detected previously in lithuania, but the ... | 2020 | 32890767 |
| associations between different laelapidae (mesostigmata: dermanyssoidea) mites and small rodents from lithuania. | associations between species of laelapidae (mesostigmata: dermanyssoidea) mites and small rodents have been studied insufficiently. the aim of this study was to investigate infestation patterns of small rodent species by laelapid mites at six locations in lithuania. a total of 728 rodents were snap- and live-trapped in various locations during 2013-2016. eight rodent species were identified, namely apodemus flavicollis, apodemus agrarius, myodes glareolus, micromys minutus, mus musculus, microtu ... | 2020 | 32307619 |
| bartonella infections in three species of microtus: prevalence and genetic diversity, vertical transmission and the effect of concurrent babesia microti infection on its success. | bartonella spp. cause persistent bacterial infections in mammals. although these bacteria are transmitted by blood-feeding arthropods, there is also evidence for vertical transmission in their mammalian hosts. we aimed to determine: (i) the prevalence and diversity of bartonella spp. in a microtus spp. community; (ii) whether vertical transmission occurs from infected female voles to their offspring; (iii) the effect of concurrent babesia microti infection on the success of vertical transmission ... | 2018 | 30165879 |
| geographical distribution of ljungan virus in small mammals in europe. | ljungan virus (lv), which belongs to the parechovirus genus in the picornaviridae family, was first isolated from bank voles (myodes glareolus) in sweden in 1998 and proposed as a zoonotic agent. to improve knowledge of the host association and geographical distribution of lv, tissues from 1685 animals belonging to multiple rodent and insectivore species from 12 european countries were screened for lv-rna using reverse transcriptase (rt)-pcr. in addition, we investigated how the prevalence of lv ... | 2020 | 32487013 |
| the competition between immatures of ixodes ricinus and dermacentor reticulatus (ixodida: ixodidae) ticks for rodent hosts. | the numbers of ixodes ricinus (l.) and dermacentor reticulatus (fabricius) larvae and nymphs attached to small mammals are influenced by interspecific competition. the present study analyses data collected over several years in two study areas: kosewo górne (mazurian district, n poland; between july 1997 and july 2009) and białowieża primeval forest (e poland; in july 2007). in total, 975 ticks were collected from striped field mice (apodemus agrarius), yellow-necked mice (a. flavicollis), bank ... | 2019 | 30346558 |
| gonads or body? differences in gonadal and somatic photoperiodic growth response in two vole species. | to optimally time reproduction, seasonal mammals use a photoperiodic neuroendocrine system (pnes) that measures photoperiod and subsequently drives reproduction. to adapt to late spring arrival at northern latitudes, a lower photoperiodic sensitivity and therefore a higher critical photoperiod for reproductive onset is necessary in northern species to arrest reproductive development until spring onset. temperature-photoperiod relationships, and hence food availability-photoperiod relationships, ... | 2020 | 32917818 |
| larval spirurids in a supralittoral amphipod in the north-east of russia and the identification of the intermediate host of antechiniella septentrionalis (spirurida: acuariidae), parasitic in a tundra vole. | the supralittoral amphipod traskorchestia ditmari (derzhavin, 1923) was identified as the intermediate host for antechiniella septentrionalis ivanova, dokuchaev & spiridonov, 2019, a parasite of the tundra vole microtus oeconomus and skrjabinocerca sp. (both spirurida: acuariidae) in magadan oblast in north-eastern russia. joint infection by both larval spirurids was not observed. the infective stage of a. septentrionalis was the encysted larvae, while larvae of skrjabinocerca sp. were free in t ... | 2019 | 31514757 |
| first record of natural baylisascaris transfuga (ascaridoidea, nematoda) infection in wild rodents. | the intestinal parasitic nematode, baylisascaris transfuga, was recorded in wild rodents for the first time. representatives of four murid species (15 myodes rufocanus, 10 m. rutilus, 3 m. glareolus and 27 microtus oeconomus) were collected in the white sea coastal habitats in the south of the kola peninsula, russia in july 2015 and examined for parasites. encapsulated nematode larvae were detected in the mesentery and the large intestine wall of one grey-sided vole (m. rufocanus) and one tundra ... | 2019 | 31452476 |
| synergistic effects of predation and parasites on the overwinter survival of root voles. | predators and parasites have been important extrinsic factors influencing the fluctuation of small mammal populations. they can have non-additive effects on a shared group of preys or hosts, which can have important consequences for population dynamics. however, experimental studies incorporating the interactions between predation and parasites are scarce in small mammal populations. here we systematically examined the synergistic effects of predators and coccidian parasites interaction on overw ... | 2019 | 31332519 |
| antechiniella septentrionalis n. sp. (spirurida: acuariidae), a new intestinal nematode parasite of the tundra vole microtus oeconomus (pallas) (rodentia: muridae) in the north-east of russia. | antechiniella septentrionalis n. sp. (spirurida: acuariidae) is described from the duodenum of a tundra vole, microtus oeconomus (pallas), collected in the magadan region in the north-east part of russia. it differs from a. suffodiax (beveridge & barker, 1975) and a. sertatum smales, 1991 mainly in having a larger number of postcloacal papillae (5-6 pairs vs 4 pairs), a differently shaped left spicule, the disposition of precloacal papillae in two rows vs one, and oblong vs oval eggs. other ... | 2019 | 29759087 |
| [a case of the tick (ixodidae) hiperinvasion of the tundra vole in magadan environs]. | a case of tundra vole death as a result its hyperinvasion by ticks ixodes angustus on the northern periphery of the asiatic range of the parasite is given. | 2018 | 29401575 |