| breeding and reproduction of fifteen wild rodents maintained as laboratory colonies. | data on reproduction and production were presented for laboratory colonies of microtus pennsylvanicus tananaensis, m oeconomus macfarlani, m o operarius, m mirurus, m abbreviatus, lemmus lemmus, l sibiricus trimucronatus, dicrostonyx stevensoni, clethrionomys rutilus, peromyscus maniculatus borealis, p m bairdii, baiomys taylori, calomys ducilla, c callosus, acomys cahirinus. litter size varied from 2.0 in a cahirinus to 5.5 in c callosus. infant (neonatal) and juvenile losses through the end of ... | 1976 | 775192 |
| spontaneous death of echinococcus multilocularis: cases diagnosed serologically (by em2 elisa) and clinical significance. | nine cases of asymptomatic alveolar hydatid disease (ahd) of the liver were diagnosed in 1985 among eskimos from the endemic region of western alaska. the patients were identified by screening with the enzyme-linked immunosorbent assay, using purified echinococcus multilocularis antigen (em2 elisa). five patients, and one diagnosed earlier (1979), were found to have lesions in which the larval e. multilocularis had died spontaneously at an early stage of infection. viability was assessed histolo ... | 1987 | 3578654 |
| seasonal variations in hemoglobin and hematocrit values in the northern red-backed mouse, clethrionomys rutilus dawsoni (merriam), in interior alaska. | | 1966 | 5905878 |
| an occurrence of schistosomatium douthitti (cort, 1914) price, 1931, in alaska in a new natural definitive host, clethrionomys rutilus (pallas). | | 1966 | 5949735 |
| detection of hemorrhagic fever with renal syndrome (hfrs) virus in the lungs of bank voles clethrionomys glareolus and redbacked voles clethrionomys rutilus trapped in hfrs foci in the european part of u.s.s.r., and serodiagnosis of this infection in man. | the antigen of hfrs virus was demonstrated by means of the indirect fluorescent antibody procedure in the lung tissue of bank and redbacked voles (clethrionomys glareolus, cl. rutilus) trapped in hfrs foci in the european part of ussr. this antigen has been used satisfactorily for serodiagnosis of hfrs in several european and asian regions of the ussr where hfrs had been found to be endemic. | 1981 | 6117265 |
| [detection of echinococcal infection in rodents and shrews caught in asahikawa and kushiro districts]. | during the may-october period of 1983, rodents and shrews were caught in asahikawa and kushiro districts and examined for the presence of echinococcal infection. 603 individuals representing 8 species and 110 individuals of 9 species were collected in asahikawa and kushiro districts, respectively. among these animals, a vole, clethrionomys rutilus mikado caught in akkeshi in kusiro district was infected with larval echinococcus multilocularis, but no evidence of echinococcal infection was found ... | 1984 | 6530212 |
| [metabolic and hematologic changes in the northern red-backed vole clethrionomys rutilus and the large-toothed red-backed vole clethrionomys rufocanus during short-term starvation and refeeding]. | the effect of starvation has been investigated on the content of glucose and lipids in the blood plasma, on the level of leucocytes in the peripheral blood and on the concentration of total lipids and glycogen in the liver. it was found that in both species of the voles, starvation within 20-22 hours sharply decreases glucose content and increases lipid content of the blood plasma. the liver glycogen becomes almost completely exhausted. these changes are more significant than those observed unde ... | 1982 | 7043959 |
| experimental infections by brucella suis type 4 in alaskan rodents. | the susceptibility of nine species of rodents and one species of lagomorph to brucella suis type 4 was studied experimentally. the rodent species included: guinea pig (cavia porcellus), scandinavian lemming (lemmus lemmus), brown lemming (l. sibiricus), northern red-backed vole (clethrionomys rutilis), varying lemmings (dicrostonyx stevensoni and d. rubricatus), yellow-cheeked vole (microtus xanthognathus), flying squirrel (glaucomys sabrinus) and ground squirrel (citellus parryii). the lagomorp ... | 1980 | 7463596 |
| infection course of the strobilar stage of taenia crassiceps in golden hamsters, with reference to host responses. | the time course of intestinal infection of golden hamsters (mesocricetus auratus) with taenia crassiceps was monitored every 2 days up to day 26 postinfection (p.i.). the isolate used was originally obtained from clethrionomys rutilus on st. lawrence island, bering sea (usa), and shows a high level of enteral establishment without parenteral infection. following oral administration of various numbers (3, 15, 30, or 60) of metacestodes, proportional numbers of cestodes attached their scolices to ... | 1994 | 8202462 |
| establishment and survival of the strobilar stage of taenia crassiceps in hamsters, gerbils, and mice, with reference to different helminth isolates. | following the oral administration of metacestodes of two isolates of taenia crassiceps, the enteral establishment and survival of the strobilar stage were examined in golden hamsters (mesocricetus auratus), mongolian gerbils (meriones unguiculatus) and laboratory mice. the origin of the isolates was microtus montebelli caught in japan in 1985 or clethrionomys rutilus captured on st. lawrence island, bering sea, in 1988 (abbreviated as jpn and sli isolates), respectively. the enteral establishmen ... | 1993 | 8295896 |
| vector and host relationships of california serogroup viruses in western siberia. | during 1990 and 1991, adult mosquitoes were collected along the ob river and its tributaries in western siberia from approximately 51 degrees 18'n to 66 degrees 4'n. fifteen virus strains were isolated from 74,196 mosquitoes tested in 1,874 pools. these included tahyna virus from aedes cataphylla-punctor subgroup (one) and ae. excrucians (one), and inkoo (ink) virus from ae. communis (one), ae. communis subgroup (one), ae. hexodontus (two), ae. punctor subgroup (two), ae. punctor complex (one), ... | 1993 | 8352392 |
| naturally occurring orthopoxviruses: potential for recombination with vaccine vectors. | orthopoxviruses are being increasingly used as live recombinant vectors for vaccination against numerous infectious diseases in humans, domestic animals, and wildlife. for risk assessments and surveillance, information about the occurrence, distribution and ecology of orthopoxviruses in western europe is important but has mainly been based on serological investigations. we have examined kidneys, lungs, spleens, and livers of norwegian small rodents and common shrews (sorex araneus) for the prese ... | 1998 | 9705389 |
| [endo- and ectoparasites as factors influencing variability of the humoral immunity response in a natural population of red vole (clethrionomys rutilus)]. | based on the five-year population study of red voles clethrionomys rutilus pallas in southern west siberia, we analysed the distribution of two predominating species of parasites (tapeworms hymenolepis horrida and immature instars of ticks ixodes persulcatus) in different demographic groups of the host, and seasonal changes of their incidence in the population. we assessed primary humoral immune response of the voles (splenic antibody-forming cells) to antigenic challenge (injection of sheep ery ... | 1998 | 9813882 |
| [paranoplocephala longivaginata sp. n. (cyclophyllidea: anoplocephalidae)--a new cestode from rodents of the western siberia]. | a new species of anoplocephalidean cestode paranoplocephala longivaginata sp. n. from some rodents (clethrionomys rutilus, sciurus vulgaris) of the western siberia is described. the new species differs from formerly known species of the genus paranoplocephala by a structure of copulatory organs: the length of cirrus and the length of vagina exceed the length of genital bursa more than 1.5 times; the internal surface of the vagina is covered with hair-like bristles along all its length. | 1998 | 9813885 |
| host associations of the tick, ixodes angustus (acari: ixodidae), on alaskan mammals. | infestation parameters are presented for 227 ticks, all ixodes angustus neumann, collected from individual mammals (n = 531) in southeastern and south-central alaska from 1996 to 1999. this tick was recovered from 12 of the 19 mammal species examined, with four species of shrews (sorex spp.), two species of voles [clethrionomys gapperi (vigors) and clethrionomys rutilus (pallas)], one species of mouse [peromyscus keeni (rhoads)], and the red squirrel [tamiasciurus hudsonicus (erxleben)] being th ... | 2003 | 14596283 |
| [helminthiasis, metabolic rates and cold resistance in the red-backed vole from a natural population]. | estimation of the standard metabolic rate (smr), maximal oxygen consumption (moc) and thermoregulation ability in males of red-backed vole (clethrionomys rutilus pallas, 1779) have shown that individuals infected with nematodes heligmosomum mixtum, regardless of intensity of worm infection, had an increased level of oxygen consumption in the cold exposition, while the individuals infected with the cestodes arostrilepis horrida, had a lover oxygen consumption than non-invaded individuals. worm bu ... | 2005 | 15907029 |
| substance p and neurokinin-1 immunoreactivities in the neural circadian system of the alaskan northern red-backed vole, clethrionomys rutilus. | the suprachiasmatic nucleus (scn) of the hypothalamus houses the main mammalian circadian clock. this clock is reset by light-dark cues and stimuli that evoke arousal. photic information is relayed directly to the scn via the retinohypothalamic tract (rht) and indirectly via the geniculohypothalamic tract, which originates from retinally innervated cells of the thalamic intergeniculate leaflet (igl). in addition, pathways from the dorsal and median raphe (dr and mr) convey arousal state informat ... | 2006 | 16930773 |
| population limitation of the northern red-backed vole in the boreal forests of northern canada. | 1. across the vast boreal forests of north america, no population cycles in clethrionomys species occur. in eurasia, by contrast, some clethrionomys populations of the same species undergo regular 3-5-year cycles. we examined the effects of nutrients, food, competitors, predators and climate on population limitation in the northern red-backed vole (clethrionomys rutilus pallas) in the south-western yukon to determine why this difference occurs. 2. from 1986 to 1996 we added food, reduced large m ... | 2006 | 17032359 |
| [detection of dna of borrelia circulating in novosibirsk region]. | detection of dna of borrelia burgdorferi sensu lato was performed by pcr in taiga ticks ixodes persulcatus, in blood samples and skin bioptates of small forest mammals, and in blood and urine samples of humans after attaching of ticks events. in novosibirsk region both in natural reservoir and in patients with ixodes ticks-borne borreliosis dna of borrelia garinii and borrelia afzelii are detected. dna of these borrelia were detected in 8 from 72 of taiga ticks, in 36 from 298 of blood and skin ... | 2006 | 17297875 |
| [study on the epidemiological characteristics of hemorrhagic fever with renal syndrome in inner mongolia]. | in order to better understand the epidemiological features of hantviruses in inner mongolia. | 2007 | 18396665 |
| vertical transmission of tick-borne encephalitis virus between generations of adapted reservoir small rodents. | vertical transmission of tick-borne encephalitis virus (tbev) between generations of the small rodents-red voles myodes rutilus pallas (previously known as clethrionomys rutilus pallas) was shown for naturally infected reservoir hosts and after experimental infection with different sublethal doses of the viral strains. for wild red voles and for their progeny born in 240-280 days after experimental infection of their parents the tbev was detected in up to 90% of samples by rt-pcr, elisa and bioa ... | 2009 | 19111585 |
| bartonella sp. infection of voles trapped from an interior alaskan site where ticks are absent. | to determine whether bartonella species may perpetuate in sites where ticks are absent, we analyzed blood and spleen samples from small mammals trapped near cantwell, alaska during september 1999. blood smears from seven of 48 myodes (clethrionomys) rutilus suggested a bartonella species infection; five of the seven yielded cultures consistent with bartonella species; pcr of rrs, glta, and rpob genes confirmed bartonella infection in four of these culture samples. phylogenetic analysis of rrs, g ... | 2010 | 20090030 |
| [functional motor asymmetry in three species of mouse rodents from natural populations]. | motor asymmetry of paws was studied in three species of mouse rodents (apodemus agrarius, clethrionomys glareolus, clethrionomys rutilus) from natural populations. the prevalence of right-hand asymmetry was revealed in both males and females of all studied species. the spatial and temporal variability of asymmetry structures was shown. the increased number of left-handed rodents was observed in unfavorable habitats. a possible adaptive role of the functional motor asymmetry exemplified by small ... | 2011 | 21675226 |
| molecular characterization and specific detection of anaplasma species (ap-sd) in sika deer and its first detection in wild brown bears and rodents in hokkaido, japan. | a previously undescribed anaplasma species (herein referred to as ap-sd) has been detected in sika deer, cattle and ticks in japan. despite being highly similar to some strains of a. phagocytophilum, ap-sd has never been detected in humans. its ambiguous epidemiology and the lack of tools for its specific detection make it difficult to understand and interpret the prevalence of this anaplasma species. we developed a method for specific detection, and examined ap-sd prevalence in hokkaido wildlif ... | 2015 | 26431688 |
| effects of parasites and antigenic challenge on metabolic rates and thermoregulation in northern red-backed voles (myodes rutilus). | perturbations in host energetics are considered to be an essential pathway for parasite impact on host fitness. however, direct estimations of parasite-induced variations in basal metabolic rates of vertebrate hosts have so far provided contradictory results. the energy requirements of immunity and other vital functions may be compromised in energy-demanding conditions in comparison to comfortable conditions; therefore, in our study performed on the wild red-backed vole, myodes rutilus, we compa ... | 2015 | 26341798 |
| dynamics, co-infections and characteristics of zoonotic tick-borne pathogens in hokkaido small mammals, japan. | many of the emerging infectious diseases originate in wildlife and many of them are caused by vector-borne pathogens. in japan, zoonotic tick-borne pathogens (tbps) are frequently detected in both ticks and wildlife. here, we studied the infection rates of potentially zoonotic species, including anaplasma, ehrlichia, neoehrlichia and babesia spp., in hokkaido's most abundant small mammals as they relate to variable extrinsic factors that might affect the infection rates of these pathogens. a tot ... | 2016 | 27166277 |
| a new intermediate host for echinococcus multilocularis: the southern red-backed vole (myodes gapperi) in urban landscape in calgary, canada. | human alveolar echinococcosis (hae) is a potentially fatal parasitic disease caused by echinococcus multilocularis, a cestode characterized by a sylvatic life-cycle involving several species of rodents and lagomorphs as intermediate hosts and canids as definitive hosts. despite the wide distribution of the parasite in north america, the number of competent intermediate host species identified to date is still relatively small, and mainly includes the northern vole (microtus oeconomus), brown lem ... | 2013 | 23608104 |
| hokkaido genotype of puumala virus in the grey red-backed vole (myodes rufocanus) and northern red-backed vole (myodes rutilus) in siberia. | three species of myodes voles known to harbor hantaviruses include the bank vole (myodes glareolus), which serves as the reservoir host of puumala virus (puuv), the prototype arvicolid rodent-borne hantavirus causing hemorrhagic fever with renal syndrome (hfrs) in europe, and the grey red-backed vole (myodes rufocanus) and royal vole (myodes regulus) which carry two puuv-like hantaviruses, designated hokkaido virus (hokv) and muju virus (mujv), respectively. to ascertain the hantavirus harbored ... | 2015 | 26003760 |
| tick-borne encephalitis virus diversity in ixodid ticks and small mammals in south-western siberia, russia. | the persistence of tick-borne encephalitis virus (tbev) in nature is maintained by numerous species of reservoir hosts, multiple transmissions between vertebrates and invertebrates, and the virus adaptation to its hosts. our aim: was to compare tbev isolates from ticks and small wild mammals to estimate their roles in the circulation of the viral subtypes. | 2016 | 27303915 |
| [the infection status of leptospira in rodents on the heixiazi island of heilongjiang province, china,in 2011]. | to study the infection status of leptospira in rodents on heixiazi island heilongjiang province in 2011. | 2013 | 24113098 |
| [new species of the tick, haemoganasus (parasitiformes, gamasoidea)]. | the female of the new species haemogamasus bujakovi sp. n. is described from the tungokochen region of the chita district. two females of the mite were taken from apodemus speciosus and one from clethrionomys rutilus. | 2007 | 1018942 |
| [histological analysis of the testis of apodemus sylvaticus and clethrionomys rutilus living in radioactively contaminated areas]. | we made a histological analysis of testis in apodemus sylvaticus and clethrionomys rutilus inhabiting a contaminated area of the east ural radioactive trace (eurt). it showed that in the control these species different in the total number of cells of spermatogenic epithelium and in testis indices which were determined by interspecific differences. concentration of 137cs and 90sr in clethrionomys rutilus from the sampling plot was correspondingly 1.5 and 6.1 times higher than in the control, in a ... | 2016 | 9889775 |
| contemporary radiation doses to murine rodents inhabiting the most contaminated part of the eurt. | the contemporary radiation doses to the organs and tissues of murine rodents inhabiting the most contaminated part of the eurt were estimated. the bones of animals trapped in 2005 at territories with a surface (90)sr contamination of 24-40 mbq/m(2) were used for dose reconstruction. the concentration of (90)sr in the animals' skulls was measured using the nondestructive method of bone radiometry. the dose estimation procedure included application of the published values of absorbed fractions of ... | 2014 | 24333639 |
| [the metabolic homeostasis of the small mammals in the conditions of the east ural radioactive trace]. | the difference in the mechanism of radioresistance, the strategy and the level of the adaptation are determined at apodemus (sylvaemus) uralensis and clethrionomys rutilus living on the territory of the east urals radioactive trace with the 90sr contamination density of 180-450 ci/km2. the mechanism of radioresistance apodemus (sylvaemus) uralensis is based on the use of lipid reserves in energy provision of the physiological functions, what provided of the growth oxidation metabolism in the mit ... | 2016 | 19507695 |
| genome-wide comparative chromosome maps of arvicola amphibius, dicrostonyx torquatus, and myodes rutilus. | the subfamily arvicolinae consists of a great number of species with highly diversified karyotypes. in spite of the wide use of arvicolines in biological and medicine studies, the data on their karyotype structures are limited. here, we made a set of painting probes from flow-sorted chromosomes of a male palearctic collared lemming (dicrostonyx torquatus, dto). together with the sets of painting probes made previously from the field vole (microtus agrestis, mag) and golden hamster (mesocricetus ... | 2016 | 26611440 |
| [developmental instability of the organism as a result of pessimization of environment under anthropogenic transformation of natural landscapes]. | the value of fluctuating asymmetry is considered to be an indicator of the developmental instability of the organism. the consequences of activities of the mining industry plants, which are characterized by alienation and transformation of large areas of natural landscapes, are analyzed as an anthropogenic factor. the objects of study were small mammals (northern red-backed (clethrionomys rutilus) and gray red-backed (clethrionomys rufocanus) voles, tundra vole (microtus oeconomus), laxmann's (s ... | 2015 | 25720274 |
| new method for visualization of c-heterochromatin in synaptonemal complex spreads. | dapi staining of the metaphase chromosomes pretreated with barium hydroxide generates a c-like banding pattern. in this work a protocol for visualizing similar pattern at the synaptonemal complex (sc) spreads after immunostaining is suggested. this method was used to visualize centromeric and sex heterochromatin at the sc spreads of guppy fish (poecilia reticulata peters, 1859). the efficiency of this method was further confirmed at sc spreads of the northern red-backed vole (myodes rutilus (pal ... | 2013 | 24260695 |
| [seasonal changes in the energy metabolism of subarctic rodents]. | in widespread species, northern taiga voles, most significant differences in the intensity of energy metabolism (m), maximum (mmax) and reserve (mres) metabolism were observed at winter temperatures (-5-20 degrees c): clethrionomys rutilus greater than c. rufocanus greater than microtus oeconomus; differences in seasonal increase of mmax and mres exhibit an inverse proportion. seasonal changes in m and mmax in autochthonous tundra rodents indicate that lemmus sibiricus belongs to a more eurybion ... | 2006 | 2596207 |
| first molecular detection and characterization of hepatozoon and sarcocystis spp. in field mice and voles from japan. | sarcocystis and hepatozoon species are protozoan parasites that are frequently detected in domestic and wild animals. rodents are considered common intermediate and paratenic hosts for several sarcocystis and hepatozoon species. here, blood dna samples from a total of six rodents, including one myodes rutilus, one myodes rufocanus, and four apodemus speciosus, collected from hokkaido, japan, were shown by conventional pcr of the 18s ribosomal rna (rrna) gene to contain sarcocystis and hepatozoon ... | 2017 | 28526989 |
| hantavirus rna prevalence in myomorph rodents on bolshoy ussuriysky island at the sino-russian border. | to understand the distribution and infection status of hantavirus in myomorph rodents on bolshoy ussuriysky island (heixiazi island) at the sino-russian border, and to provide data for the safe development and utilization of bolshoy ussuriysky island. | 2017 | 28678679 |
| intrachromosomal rearrangements in rodents from the perspective of comparative region-specific painting. | it has long been hypothesized that chromosomal rearrangements play a central role in different evolutionary processes, particularly in speciation and adaptation. interchromosomal rearrangements have been extensively mapped using chromosome painting. however, intrachromosomal rearrangements have only been described using molecular cytogenetics in a limited number of mammals, including a few rodent species. this situation is unfortunate because intrachromosomal rearrangements are more abundant tha ... | 2017 | 28867774 |
| [care of young, aggressiveness, and secretion of testosterone in male rodents: a correlation analysis ]. | to test the current hypotheses on the relationship between the mating system, reproductive strategy, aggression, and secretion of testosterone, a comparative study of interactions in pair encounters, the level of parental care, and the gonadal testosterone level in males was performed in six rodent species (clethrionomys rutilus, meriones meridianus, microtus arvalis, lagurus lagurus, lasiopodomys mandarinus, and meriones unguiculatus) with different types of spatial-and-ethological population s ... | 2016 | 25510112 |
| [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 |
| 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 |
| [radiation doses and allozyme variability in the population of the northern red-backed vole (clethrionomys rutilus) from the east urals radioactive trace zone]. | the paper estimates the external (due to radionuclides accumulated in the soil) and internal (due to incorporated radionuclides) exposure of rodents that live in the head of the east urals radioactive trace (eurt). it is shown that in the last decades the dose rates were lower than the values that lead to doubling the number of mutations in the allozyme loci in mammals. the variability ofthe eight allozyme loci in populations of northern red-backed voles from the eurt zone and their neighboring ... | 2014 | 25711026 |
| molecular and ecological signs of mitochondrial adaptation: consequences for introgression? | the evolution of the mitochondrial genome and its potential adaptive impact still generates vital debates. even if mitochondria have a crucial functional role, as they are the main cellular energy suppliers, mitochondrial dna (mtdna) introgression is common in nature, introducing variation in populations upon which selection may act. here we evaluated whether the evolution of mtdna in a rodent species affected by mtdna introgression is explained by neutral expectations alone. variation in one mi ... | 2014 | 24690754 |
| gene conversion in the mitochondrial genome on interspecific hybridization in voles of the clethrionomys genus. | the phenomenon of interspecific hybridization accompanied by transfer of the mitochondrial genome from the northern red-backed vole (clethrionomys rutilus) to the bank vole (cl. glareolus) in northeastern europe is well known already for 25 years. however, the possibility of recombination between homologous segments of maternal and paternal mtdnas of the voles during fertilization was not previously studied. analysis of data on variability of nucleotide sequences of the mitochondrial gene for cy ... | 2012 | 22813593 |
| transfer of mitochondrial genome of the northern redbacked vole (clethrionomys rutilus) to the bank vole (c. glareolus) in northwestern europe. | | 2017 | 18274484 |
| beyond the mediterranean peninsulas: evidence of central european glacial refugia for a temperate forest mammal species, the bank vole (clethrionomys glareolus). | this study details the phylogeographic pattern of the bank vole, clethrionomys glareolus, a european rodent species strongly associated with forest habitat. we used sequences of 1011 base pairs of the mitochondrial dna cytochrome b gene from 207 bank voles collected in 62 localities spread throughout its distribution area. our results reveal the presence of three mediterranean (spanish, italian and balkan) and three continental (western, eastern and 'ural') phylogroups. the endemic mediterranean ... | 2005 | 15836645 |
| concordant divergence in proteins and mitochondrial dna between two vole species in the genus clethrionomys. | the bank vole (clethrionomys glareolus) and the northern red-backed vole (c. rutilus) are two closely related species where interspecific crosses result in fertile female but sterile male offspring. mitochondrial dna (mtdna) from c. rutilus has passed the species barrier and is found in c. glareolus from northern fennoscandia. the present report shows that the genetic distance between the two species, calculated from enzyme data (nei's d), is 0.64. isoelectric focusing of muscle proteins resolve ... | 1988 | 3044353 |
| transfer of mitochondrial dna from the northern red-backed vole (clethrionomys rutilus) to the bank vole (c. glareolus). | using a silver staining method to detect dna fragments produced by restriction enzymes, it was possible to compare mitochondrial dnas (mtdnas) from 85 individuals of the bank vole (clethrionomys glareolus) trapped at 25 localities in fennoscandia. there are two distinctly different mtdna lineages, one occurring in southern and central fennoscandia and the other in the northern parts. a fragment comparison method shows about 12.7% nucleotide sequence divergence between these two lineages. this ma ... | 1987 | 3106637 |
| weather-driven change in primary productivity explains variation in the amplitude of two herbivore population cycles in a boreal system. | vertebrate populations throughout the circumpolar north often exhibit cyclic dynamics, and predation is generally considered to be a primary driver of these cycles in a variety of herbivore species. however, weather and climate play a role in entraining cycles over broad landscapes and may alter cyclic dynamics, although the mechanism by which these processes operate is uncertain. experimental and observational work has suggested that weather influences primary productivity over multi-year time ... | 2017 | 29170821 |
| [analysis of microsatellite dna in rodents from eastern urals radioactive trace zone and contiguous territories]. | the variability of four microsatellite loci of rodents, caught from the head part of eastern urals radioactive trace (eurt), along with the rodents inhabiting contiguous zone with background radiation level and distant-reference territory, was analyzed forthe first time. differences in the parameters of genetic diversity between northern red-backed voles from the eurt zone and from the reference population were detected. an increase in some indices of genetic diversity in animals from a contiguo ... | 2016 | 27529979 |
| [genetic diversity of the cytochrome b gene fragment haplotypes in red-backed vole myodes (clethrionomys) rutilus pallas, 1779]. | for the first time, genetic analysis of the cytochrome b gene fragment haplotypes encoding the identical and the most common cytochrome b polypeptide (f1) in m. rutilus from eastern and beringian mateml lineages was carried out. the f1 frequencies for the vole populations from northern priokhotye and the kolyma basin were calculated. considerable polymorphism of the cytochrome b f1 haplotypes within two major phylo- groups of red-backed vole was supported by high molecular diversity indices for ... | 2016 | 27215033 |
| the impact of reproduction on the stress axis of free-living male northern red backed voles (myodes rutilus). | activation of the hypothalamic-pituitary-adrenal (hpa) axis culminates in the release of glucocorticoids (henceforth cort), which have wide-reaching physiological effects. three hypotheses potentially explain seasonal variation in cort. the enabling hypothesis predicts that reproductive season cort exceeds post-reproductive season cort because cort enables reproductive investment. the inhibitory hypothesis predicts the opposite because cort can negatively affect reproductive function. the costs ... | 2015 | 26188715 |
| [participation of apoptotic proteins in hypothalamic regulation of the population volume of the red-backed vole (clethrionomys rutilus)]. | the content of the antiapoptotic protein bcl-2 and of the proapoptotic enzyme caspase-3 in the paraventricular nucleus (pvn) of sexually immature red-backed voles is studied in the course of the population cycle. the significant change of the bcl-2 and procaspase-3 in the pvn neurons is established at all cycle phases. the low volume of population (under the most favorable conditions of the existence of the animals) is revealed to be characterized by the moderately increased or high expression o ... | 2012 | 22567977 |
| [density-dependent regulation in populations of red-backed voles (myodes rutilus) in optimal and suboptimal habitats of south-west siberia]. | in a population of red-backed voles (myodes rutilus) that live in optimal habitats (mountain taiga of north-eastern altai) in the years of peak density we have observed total suppression of sexual maturation of young animals which is known to be the main mechanism of density regulation. increase of voles' local density is accompanied by the increase of glucocorticoids in blood of mature and immature individuals of both sexes that argues for the important role of hypothalamic-pituitary-adrenal ax ... | 2012 | 22567967 |
| [variability of mitochondrial dna cytochrome b gene in the red vole clethrionomys rutilus pallas, 1779, population in the flood-plain middle stream of the kolyma river]. | the intrapopulation variability of a cytochrome b gene fragment and the corresponding amino acid sequence was studied in the red vole clethrionomys rutilus pallas, 1779 from the flood-plain of the kolyma river. wide polymorphic variability of these properties was observed. differences in the cytochrome b gene sequence were determined between the red voles of the studied population and the species collected in neighborhoods of novosibirsk and omsk. the revealed results point to the urgency of the ... | 2016 | 21793251 |
| historic hybridization and persistence of a novel mito-nuclear combination in red-backed voles (genus myodes). | the role of hybridization in generating diversity in animals is an active area of discovery and debate. we assess hybridization across a contact zone of northern (myodes rutilus) and southern (m. gapperi) red-backed voles using variation in skeletal features and both mitochondrial and nuclear loci. this transect extends approximately 550 km along the north pacific coast of north america and encompasses 26 populations (n = 485). we establish the history, geographic extent and directionality of hy ... | 2009 | 19460158 |
| dual-energy x-ray absorptiometry (dxa) can accurately and nondestructively measure the body composition of small, free-living rodents. | dual-energy x-ray absorptiometry (dxa) is a nondestructive technique that can potentially measure specific components of whole-body composition in free-living and lab-raised animals. our aim was to test the ability of dxa to measure the composition of a common arvicoline rodent, the northern red-backed vole (clethrionomys rutilus). we used a dxa apparatus to obtain measurements of fat mass (fm), lean mass (lm),bone mineral content, bone mineral density, and fat-free mass(ffm) in carcasses of fre ... | 2009 | 18419562 |
| [hypothalamo-hypophyseal neurosecretory system of clethrionomys rutilus during population cycle]. | | 2006 | 16756102 |
| circadian organization of a subarctic rodent, the northern red-backed vole (clethrionomys rutilus). | arctic and subarctic environments are exposed to extreme light: dark (ld) regimes, including periods of constant light (ll) and constant dark (dd) and large daily changes in day length, but very little is known about circadian rhythms of mammals at high latitudes. the authors investigated the circadian rhythms of a subarctic population of northern red-backed voles (clethrionomys rutilus). both wild-caught and third-generation laboratory-bred animals showed predominantly nocturnal patterns of whe ... | 2004 | 15155010 |
| [variations of some physiological and biochemical indices in the population of red-backed vole (clethrionomys rutilus)]. | we studied the changes in the population density of the red-backed vole (clethrionomys rutilus pall.) on the northern coast of the sea of okhotsk (60 degrees n) during three population cycles (1980-1990). a total of 3111 animals were studied, including 1006 alive voles. for evaluation of the population stress and food deficit, a complex of biochemical (blood level of glucose and liver levels of glycogen and lipids) and physiological (blood content of leucocytes, spleen weight, etc.) indices was ... | 2016 | 12816070 |
| suppression of symbiotic digestion in red voles (clethrionomys rutilus) as a result of anthropogenic impact. | | 2016 | 11013854 |
| disruption of the dynamics of food passage through the digestive tract in red voles (clethrionomys rutilus) dwelling in an area near oil and gas extraction. | | 2016 | 11013841 |
| [soluble blood proteins and hemoglobin from red-backed and large- toothed voles]. | electrophoretic pattern of serum proteins of northern red-backed and large-toothed voles was examined. seven main protein zones were distinguished. in four of them variability was observed, possibly genetically determined. polymorphism of transferrins was thoroughly studied. 6 alleles and only 7 phenotypes of this protein were found in the northern red-backed vole, while 3 alleles and 4 phenotypes were revealed in the large-toothed red-backed vole, two alleles being common. distribution of pheno ... | 1990 | 2283050 |
| effects of cold, short day and melatonin on thermogenesis, body weight and reproductive organs in alaskan red-backed voles. | this study examined whether cold, short day or melatonin causes reproductive regression and stimulates nonshivering thermogenesis in a subarctic rodent clethrionomys rutilus. red-backed voles born and raised at 23 degrees c and 22 h light per day (ld 22:2) at fairbanks, alaska (65 degrees n) were exposed in one of six groups to: 1) long day (ld 22:2), 23 degrees c, injected daily with melatonin or saline 2 h before lights out, 2) long day, 3 degrees c, injected daily with melatonin or saline, 3) ... | 1986 | 3531257 |
| increased beta-adrenergic receptors in brown fat of winter-acclimatized alaskan voles. | to assess a possible mechanism for the enhanced thermogenesis of cold-acclimated and winter-acclimatized red-backed voles (clethrionomys rutilus), beta-adrenergic receptors of brown fat were characterized by specific binding of (-)-[3h]-dihydroalprenolol [( 3h]dha) to isolated brown fat membranes from 23 degrees c-acclimated controls, cold-acclimated (5 wk or 5 mo at 5 degrees c), wild summer, and winter-acclimatized voles. scatchard analysis to determine the equilibrium dissociation constant (k ... | 1983 | 6311034 |
| effects of extra food on peromyscus and clethrionomys populations in the southern yukon. | if food supply limits density in rodent populations, the addition of supplemental food ought to increase population size. from may to september we added food on 2-hectare areas of white spruce forest in the southern yukon. in 1977, we used oats with no measurable impact. in 1978 and 1979 we used sunflower seeds and doubled or tripled the population densities of peromyscus maniculatus and clethrionomys rutilus. supplemental feeding with sunflower seeds increased juvenile production in both specie ... | 1981 | 28310015 |
| catecholamine-synthesizing enzymes in adrenals of seasonally acclimatized voles. | tyrosine hydroxylase (th) and phenylethanolamine-n-methyltransferase (pnmt) activities were assayed in adrenal glands of the following groups of the alaskan red-backed vole (clethrionomys rutilus dawsoni): 1) laboratory reared at 20 degrees c and 2) exposed to 5 degrees c for 1, 3, 7, and 28 days; 3) wild, summer acclimatized; 4) wild, fall acclimatized; and 5) wild, winter acclimatized. th activity in laboratory-acclimated voles exposed to 5 degrees c was increased by 2 times after 3 days and r ... | 1978 | 24032 |
| the red-backed vole (clethrionomys rutilus) as a laboratory animal. | | 1977 | 333181 |
| spontaneous occurrence of tumors in laboratory-reared arvicoline rodents. | data from more than 2500 laboratory-reared rodents of four arvicoline genera raised since 1966 indicated that the incidence of neoplasia increased spontaneously in a nearly linear manner from 1968 to 1974. the incidence was highest in clethrionomys rutilus, with an age-adjusted rate of 32 tumors/100 animals in 1974. the various species of dicrostonyx exhibited dissimilar rates (22 tumors/100 animals, average for 1972 to 1973) with lower rates observed in the genera microtus and lemmus. tumors of ... | 1976 | 987845 |
| norepinephrine thermogenesis in seasonally acclimatized and cold acclimated red-backed voles in alaska. | the calorigenic response (millilitres o2 per gram pre hour) to injected norepinephrine (ne) was compared as an index of nonshivering thermogenesis (nst) in the following groups of the alaska red-backed vole (clethrionomys rutilus): (1) summer, (2) fall acclimatized, (3) winter acclimatized, (4) 20 degrees c acclimated and (5) 5 degrees c acclimated. the metabolic response was tested at thermoneutrality (25 degrees c) and during cold exposure (5 degrees c). winter acclimatized voles showed a sign ... | 1976 | 776371 |
| influence of ectoparasites on a population of the northern red-backed vole in southwestern siberia. | | 1974 | 4445917 |
| virus-associated tumours of the harderian gland in laboratory-reared voles, clethrionomys rutilus (pallas). | | 1974 | 4835269 |
| the dynamics of changes in body weight and of the principal morphological features of the northern red-backed vole during autumn and winter in the subarctic. | | 2004 | 4668777 |
| variation in the serum proteins of the red-backed mice clethrionomys rutilus and c. gapperi and its taxonomic significance. | | 1972 | 4111690 |
| reproductive status and adrenal size in the northern red-backed vole in relation to season. | | 1967 | 6063650 |
| seasonal variation of myoglobin in the northern red-backed vole. | | 1966 | 5956540 |
| [cytokines and antibodies in experimental infection of wild and laboratory rodents (rodentia) with tick-borne encephalitis virus]. | persistence modeling was performed by means of infection of the wild rodents: northern red-backed vole myodes rutilus (pallas, 1779) and striped field mouse apodemus agrarius (pallas, 1771), as well as of laboratory mice with the tick-borne encephalitis virus (tbev) in tick suspensions with subsequent detection of the tbev, hemagglutination inhibition and virus-neutralizing antibodies, as well as expression of cytokine genes during 4 months. detection rate of the tbev rna and antigen e remained ... | 2017 | 29733169 |
| a putative novel strain of ehrlichia infecting amblyomma tigrinum associated with pampas fox (lycalopex gymnocercus) in esteros del iberá ecoregion, argentina. | the current work evaluated road-killed pampas foxes (lycalopex gymnocercus) and their ticks for the presence of vector-borne agents in the ecoregion esteros del iberá in northeastern argentina. spleen, lung and blood samples and amblyomma tigrinum adult ticks collected from the foxes were tested by polymerase chain reaction (pcr) assays targeting bacteria of the genera ehrlichia, anaplasma, and rickettsia. all foxes tested were negative for the three genera, but evidence of ehrlichia and rickett ... | 2020 | 31711730 |
| phylogeographical diversity of anaplasma phagocytophilum in the asian part of russia based on multilocus sequence typing and analysis of the anka gene. | anaplasma phagocytophilum is a tick-transmitted bacterium that replicates in neutrophil granulocytes and elicits febrile disease in humans and animals; it is widely distributed in the americas, europe, africa, and asia. a. phagocytophilum is commonly regarded as a single species, but several genetic variants with distinct host distribution and geographical origin have been described. in a previous study, we used multilocus sequence typing (mlst) to characterize 25 a. phagocytophilum strains from ... | 2020 | 32028054 |
| impact of climate change on the small mammal community of the yukon boreal forest. | long-term monitoring is critical to determine the stability and sustainability of wildlife populations, and if change has occurred, why. we have followed population density changes in the small mammal community in the boreal forest of the southern yukon for 46 years with density estimates by live trapping on 3-5 unmanipulated grids in spring and autumn. this community consists of 10 species and was responsible for 9% of the energy flow in the herbivore component of this ecosystem from 1986 to 19 ... | 2019 | 30983064 |
| 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 |
| innate and adaptive immunity in wild rodents spontaneously and experimentally infected with the tick-borne encephalitis virus. | two dominant species of wild small rodents trapped in novosibirsk region, south-western siberia, russia differed in their susceptibility to the tick-borne encephalitis virus (tbev) infection. tbev rna average detection rate for northern red-backed vole myodes rutilus (pallas, 1779) (82.2 ± 5.8% blood samples and 63.1 ± 2.7% organ samples) significantly exceeded the corresponding values for the striped field mouse apodemus agrarius (pallas, 1771) (47.0 ± 8.7% blood and 24.5 ± 2.8% organ samples) ... | 2020 | 31927073 |
| high genomic diversity in the bank vole at the northern apex of a range expansion: the role of multiple colonizations and end-glacial refugia. | the history of repeated northern glacial cycling and southern climatic stability has long dominated explanations for how genetic diversity is distributed within temperate species in eurasia and north america. however, growing evidence indicates the importance of cryptic refugia for northern colonization dynamics. an important geographic region to assess this is fennoscandia, where recolonization at the end of the last glaciation was restricted to specific routes and temporal windows. we used gen ... | 2020 | 32248595 |
| age-related differences in physiology and survival of northern red-backed voles (myodes rutilus) in captivity. | age-related deterioration of physiological functions is one of the most evident manifestations of ageing. in wild populations of some species, including murid rodents, lifespans are substantially modified by environmental signals that affect an individual's response to such challenges as unfavourable climatic conditions, parasitic load etc. but the real impact of ageing on natural mortality of most species remains obscure. to clarify how age affects the responsiveness of organisms to environment ... | 2020 | 31654315 |
| [interpopulation variability of endocrine-metabolic reaction to cold stress in northern red-backed vole (myodes rutilus)]. | in natural environment, stresses, when animals happen to be exposed to them, influence the functional activity of adrenal cortex. it can be expected that in animals, living under unfavorable conditions, basal concentration of glucocorticoid hormones would be increased while adrenocortical response to acute stress would be weakened. since the main function of stress-reaction is resources mobilization meant to compensate an environmental impact, its weakening should lead to reduction of reserve me ... | 2018 | 30024138 |
| geographical distribution and genetic diversity of bank vole hepaciviruses in europe. | the development of new diagnostic methods resulted in the discovery of novel hepaciviruses in wild populations of the bank vole (myodes glareolus, syn. clethrionomys glareolus). the naturally infected voles demonstrate signs of hepatitis similar to those induced by hepatitis c virus (hcv) in humans. the aim of the present research was to investigate the geographical distribution of bank vole-associated hepaciviruses (bvhvs) and their genetic diversity in europe. real-time reverse transcription p ... | 2021 | 34203238 |