| [biological effects in natural populations of small rodents in radiation contaminated areas. the frequency of bone marrow polyploid cells of bank voles in different years following chernobyl accident]. | on the basis of the metaphase analysis results, the peculiarities of dynamics of the genome mutation frequency (polyploid cells) were studied in bone marrow of bank voles inhabiting the areas with different radiocontamination level due to the chernobyl accident (8-1526 kbq/m2 for 137cs) in 1986-1991. unexpectedly high frequencies of polypoid cells exceeding the pre-accidental level by a factor of 10(1)-10(3) were recorded in all populations studied. relationship between the frequency of the para ... | 2016 | 10689427 |
| immunolocalization of androgen receptors in testicular cells during postnatal development of the bank vole (clethrionomys glareolus, s.). | determination of the cellular distribution of the androgen receptors within the testis is of great importance for an understanding of their essential role in mediating of androgen action in the male gonad. in bank voles, which are seasonally breeding rodents, photoperiod is one of the most important factors inducing profound changes in the morphology and hormonal activity of the testes. immunolocalization of androgen receptors was found in all somatic cells such as sertoli cells, leydig cells, a ... | 1999 | 10669935 |
| sex and age-specific differences in ultraviolet reflectance of scent marks of bank voles (clethrionomys glareolus). | scent markings of voles are visible via their ultraviolet reflection. kestrels, and possibly other diurnal raptors, may use this property when hunting. we performed a laboratory study on bank voles to determine whether uv-reflectance of scent marks differs in relation to sex, age and social status. when reflectance spectra of scent marks were measured with a spectro-radiometer, we found uv reflectance to be strongest in mature males. there were no differences between mature females and immature ... | 1999 | 10633557 |
| [structure of bank vole population cycles]. | | 1999 | 10613260 |
| maternal effort and male quality in the bank vole, clethrionomys glareolus. | parental investment in reproduction is adjusted according to potential benefits in terms of offspring survival and/or mating success. if male quality affects the reproductive success of a female, then females mating with high-quality males should invest more in reproduction. although the subject has been of general interest, further experimental verification of the hypothesis is needed. we studied whether female bank voles (clethrionomys glareolus) adjusted their maternal effort according to mal ... | 1999 | 10457618 |
| the effect of testicular macrophages, macrophage-conditioned medium and interleukin-1alpha on bank vole leydig cell steroidogenesis. | it has already been accepted that the function and activity of the testis is regulated not only by gonadotrophins, but also by many locally produced factors and by cell-cell interactions. that is why the aim of our work was to determine whether macrophages and/or their products have an influence on leydig cell steroidogenic activity. the source of leydig cells and macrophages were male bank voles of spring and autumn generations, reared in 18 light:6 dark or 6 light:18 dark (18l:6d or 6l:18d) co ... | 1999 | 10433066 |
| subcellular distribution of metallothionein and cadmium in the liver and kidneys of bank voles (clethrionomys glareolus) exposed to dietary cadmium. | metallothionein (mt) and cadmium (cd) contents were determined in the subcellular fractions of the liver and kidneys of bank voles exposed for 6 weeks to elevated levels of dietary cd-40 and 80 micrograms g-1 dry weight. hepatic and renal mt was detected exclusively in the cytosol, while cd was found in the cytosol (73-79% of the total content), nuclei (14-18%) and particulates (4-9%). the concentration of mt in the cytosol as well as cd content in the particular subcellular fractions appeared t ... | 1999 | 10406086 |
| a stereotaxic atlas of the forebrain of the bank vole (clethrionomys glareolus). | in this article part of the forebrain of the bank vole (clethrionomys glareolus) is presented in stereotaxic coordinates. the stereotaxic procedure was performed as follows. with the vole's head mounted in a stereotaxic adaptor, internal reference tracks were made with a 0.5-mm diameter microdialysis cannula and india ink, 2 mm in front and 2.6 mm behind the skull landmark bregma. brains were fixed for 72 h in 4% commercial formaldehyde in sodiumcacodylate buffer containing 1% cacl2. to determin ... | 1999 | 10386835 |
| immunolocalization of aromatase and estrogen receptors in bank vole leydig cells. | | 1999 | 10352972 |
| granulated metrial gland cells and interstitial trophoblast in the uterine wall of the bank vole, clethrionomys glareolus, in early pregnancy. | the morphology and distribution of granulated metrial gland cells and of interstitial trophoblast cells in the uterine wall was studied in the first half of pregnancy in the bank vole, clethrionomys glareolus. the morphology and distribution of granulated metrial gland cells was generally similar to that found in other members of the rodentia, although they were absent from the walls of the arterial vessels passing through the decidua basalis. interstitial trophoblast invaded the decidualising e ... | 1999 | 10337962 |
| [presence in the eastern part of the spanish pyrenees of amphipsylla sibirica sepifera jordan and rothschild, 1920 (siphonaptera: ceratophyllidae: amphipsyllinae)]. | the detection of two males and one female of amphipsylla sibirica sepifera on three clethrionomys glareolus is pointed out. the rodents were taken in alt aneu and espot, two towns of lerida (a spanish province). the finding of this flea species on spanish pyrenees increases to the west its geographical distribution and adds one new species to the iberian flea fauna. | 1999 | 10229941 |
| [biological effects in natural populations of small rodents in radiation-polluted territories. dynamics of chromosome aberration frequency in a number of generations of european bank vole (clethrionomys glareolus, schreber)]. | the dynamics of chromosome aberration frequency in bone marrow cells of many generations (14) of bank vole living in the radioactive trace of the chernobyl catastrophe (1986-1992) has been analysed. the study revealed that the chromosome aberration frequency in voles in the areas with radio-contamination density 220 and 1526 kbq/m2 (for 137cs) significantly exceeds the control level 3-7 times over the whole period under investigation. the dynamics of the frequency of structural chromosome injuri ... | 2016 | 9876498 |
| high population density in bank voles stimulates food hoarding after breeding. | the effects of conspecific density (i.e. risk of intraspecific competition) on hoarding behaviour were studied in breeding pairs of bank voles, clethrionomys glareolus. i simulated high population density by using odours of conspecifics, to exclude the direct effects of exploitation or interference competition for food. the pairs of bank voles hoarded only at the end of their breeding season. hoarding was not correlated with whether the voles had a litter during the experiment or their litter si ... | 1998 | 9641993 |
| the thyroid gland brown adipose tissue of forest mice and bank voles over the annual cycle. | examinations were carried out in the białowieza national park during 4 consecutive years on 295 bank voles and 265 forest mice caught in february, april, june, july, october and december. the examination material was fixed in the fluids of bouin, carnoy, hell and lison-vokaer; 6 microns paraffin sections were stained with hematoxylin-eosin, gallacyanin and by the azan methods according to heidenhain. brown adipose tissue (bat) together with thyroid was fixed in 10% formalin and sliced frozen for ... | 1998 | 9835173 |
| density-dependent life histories in female bank voles from fluctuating populations. | using long-term data sets from two lowland floodplain forest bank vole populations in central europe, we tested two predictions that with increasing densities: (i) proportions of nonparous females in winter populations would increase; and (ii) age of both nonparous and parous females would increase. these two predictions follow from the assumption that changes in age structure are driven by density-dependent shifts in age at first reproduction. both populations were sampled by snap trapping betw ... | 1998 | 26412367 |
| bank voles in linear habitats show restricted gene flow as revealed by mitochondrial dna (mtdna). | genetic structure of bank vole populations in linear river bank habitat in southeast norway was determined from analyses of dna sequences for the mitochondrial d-loop. animals were sampled at sites separated by 1 km, along two forested river banks separated by approximately 100 m of open water. twenty-six distinct haplotypes were found among 120 voles. the voles showed significant deviation from panmixis on both sides of the river. animals from the same site or from sites 1 km apart were more li ... | 1998 | 9787447 |
| accumulation of cadmium in and its effect on bank vole tissues after chronic exposure. | cadmium is one of many metals that are not physiologically or biochemically essential to organisms. this element is extremely dangerous as it is easily absorbed and remains in tissues for a long time. long exposure to high doses of cadmium may cause biochemical and functional changes in some critical organs. in this study, wheat grains contaminated with cadmium chloride were used to test the influence of cadmium on male bank voles (clethrionomys glareolus). doses used in the experiment were envi ... | 1998 | 9756701 |
| [hippocampus mass dynamics and spatial behavior feature in annual cycle of bank voles]. | | 1998 | 9719892 |
| hormonal and photoperiodic modulation of testicular mrnas coding for inhibin/activin subunits and follistatin in clethrionomys glareolus, schreber. | photoperiodic and hormonal modulation of mrnas for testicular inhibin/activin subunits and follistatin were studied in a seasonally breeding rodent, the bank vole (clethrionomys glareolus). photoperiod-induced testicular regression had no effect on the relatively low steady-state levels of follistatin mrna. inhibin alpha (i alpha) and beta b (i beta b) mrna levels were significantly higher in regressed than in active gonads, but inhibin beta a was undetectable. the effect of gonadotropin adminis ... | 1998 | 9658594 |
| offspring growth, survival and reproductive success in the bank vole: a litter size manipulation experiment. | to estimate the optimality of brood size, it is essential to study the effects of brood size manipulation on offspring survival and reproductive success. moreover, testing the generality of the hypothesis of reproductive costs requires experimental data from a diversity of organisms. here i present data on the growth, survival and reproductive success of bank vole clethrionomys glareolus individuals from manipulated litters. furthermore, the survival of mothers whose litter size was manipulated ... | 1998 | 28308430 |
| could myocarditis, insulin-dependent diabetes mellitus, and guillain-barré syndrome be caused by one or more infectious agents carried by rodents? | the numbers of small rodents in northern sweden fluctuate heavily, peaking every 3 or 4 years. we found that the incidence of guillain-barré syndrome and insulin-dependent diabetes mellitus, as well as the number of deaths caused by myocarditis, followed the fluctuations in numbers of bank voles, although with different time lags. an environmental factor, such as an infectious agent, has been suggested for all three diseases. we hypothesize that guillain-barré syndrome, myocarditis, and insulin- ... | 2014 | 9621189 |
| heritabilities of dominance-related traits in male bank voles (clethrionomys glareolus). | a number of studies have shown that in several animal species females prefer dominant males as mating partners, but fewer attempts have been made to measure possible indirect benefits of this choice. one reason for this may be that, even though dominance is a widely used concept, the definition of dominance still remains controversial furthermore, defining and measuring the heritability of social behaviors is problematic because they are not individual traits but, by definition, involve interact ... | 1998 | 28565250 |
| female bank vole (clethrionomys glareolus) recognition: preference for the stud male. | pregnant and nursing bank vole (clethrionomys glareolus) females were investigated for their ability to recognize their mated male on the basis of chemical cues. in a two-choice test pregnant females showed a strong preference, manifested by higher frequency of sniffs and time spent sniffing, to the odour of a stud male over that of unfamiliar male, but only during the days after insemination and around implantation. as gestation proceeds females exhibited no affinity for either of these two kin ... | 1998 | 24896009 |
| ultrastructure of the spermatozoon of the bank vole tapeworm, paranoplocephala omphalodes (cestoda, cyclophyllidea, anoplocephalidae). | the mature paranoplocephala omphalodes spermatozoon is filiform, tapered at both ends and lacks mitochondria. its anterior extremity exhibits an apical cone of electron-dense material measuring about 900 nm in length and 200 nm in width, and two crested-like bodies. the cortical microtubules follow a 25-35 degrees helicoidal path along their whole length, except at the posterior extremity where they become parallel to the spermatozoon axis. they are arranged in a single or two fields which may c ... | 1998 | 9521014 |
| [estimation of intensity of dietary fiber degradation by symbionts in the stomach and cecum of the bank vole clethrionomys glareolus]. | | 1997 | 9376808 |
| [reduction of dietary fiber in the digestive tract of the bank vole clethrionomys glareolus]. | | 1997 | 9376807 |
| the capability of androgen aromatization by bank vole leydig cells in vitro: the effect of aromatase inhibitor. | the effect of increasing concentrations of aromatase inhibitor cgs 16949a on lh- and testosterone-supplemented estradiol secretion by leydig cells was studied. leydig cells were obtained from immature and mature bank voles, which were reared in a long or a short photoperiod conditions. they were either incubated for 6 hrs with lh and/or testosterone (lh/testosterone-supplemented cultures), or as the control cultures. aromatase inhibitor was added for further 18 h. after 24-h incubation period te ... | 1997 | 9444631 |
| lack of concordance between mtdna gene flow and population density fluctuations in the bank vole. | the genetic structure of bank voles clethrionomys glareolus was determined from analyses of mitochondrial dna (mtdna) sequences, and compared with previous data on geographical synchrony in population density fluctuations. from 31 sample sites evenly spaced out along a 256-km transect in se norway a total of 39 distinct mtdna haplotypes were found. the geographical distribution of the haplotypes was significantly non-random, and a cladistic analysis of the evolutionary relationship among haploty ... | 1997 | 9262013 |
| effect of apomorphine on the conflict-induced jumping stereotypy in bank voles. | in conventional laboratory cages, bank voles (clethrionomys glareolus) develop a jumping up-and-down stereotypy already before the age of one month. central da systems are thought to be involved in the expression of these conflict-induced stereotypies (cis). stereotypies can also be elicited pharmacologically, most commonly by amphetamine and apomorphine. hence, administration of apomorphine to jumping bank voles provides the opportunity to compare pharmacologically-induced stereotypies (phis) a ... | 1997 | 9259017 |
| male rank and female choice in the bank vole, clethrionomys glareolus. | this study aims to determine whether bank vole females selectively prefer the odour of a dominant male over that of a subordinate. the dominance rank of males was established by their aggression. the males that were considered dominants had higher aggression scores, measured as the sum of the number of attacks and pursuits. dominants had sex accessory glands weighing significantly more than those of the subordinates, as a consequence of their higher plasma testosterone levels. in a two-choice te ... | 1997 | 24897713 |
| [the variability of the biochemical status of populations of the bank vole (clethrionomys glareolus) subjected to the chronic action of ionizing radiation in relation to the time of their inhabiting radionuclide-contaminated areas]. | the existence of a population of bank voles in the course of long time (50-60 years) in conditions of chronic ionizing radiation at low doses, promoted adaptation of this populations of rodents to the action of this factor. as opposed to, in a population of bank voles, living radionuclide-contaminated areas during 8-years after the chernobyl accident, adaptation was not observed. | 2016 | 9244535 |
| [the effect of small radiation doses on biological changes in population groupings of murine rodents]. | the influence of low doses of radiation on the biological changes in the population groupings of rodents is traced. correlative dependence between the factors of accumulation of 137cs by animals in contact with the forest litter and vital functions: intensity of reproduction, death of young animals (sad) and size was found at the example of clethrionomys glareolus schreb. however, it is necessary to make amendments to the age structure of the grouping under analysis to use the mentioned above te ... | 2016 | 9244516 |
| photoperiod-induced changes in androgen receptor expression in testes and accessory sex glands of the bank vole, clethrionomys glareolus. | photoperiodic modulation of androgen levels and androgen receptor (ar) expression in testes and accessory sex glands were studied in a seasonally breeding rodent, the bank vole. juvenile voles subjected to long photoperiod (20l:4d) for 6-8 wk attained sexual maturity, which was associated with a prominent increase in testicular testosterone (t) levels and weight of testes and accessory sex glands. pubertal development in short photoperiod-treated (6l:18d for 6-8 wk) juveniles was arrested, and s ... | 1997 | 9096871 |
| the effect of il-1 on basal and hcg-stimulated testosterone secretion by leydig cells of the bank voles (clethrionomys glareolus, s.). | | 1997 | 9151091 |
| immunocytochemical localization of interleukin-1 (il-1) in testicular macrophages and leydig cells of the bank vole (clethrionomys glareolus, s.). | | 1997 | 9151090 |
| low ambient temperature decreases cadmium accumulation in the liver and kidneys of the bank vole (clethrionomys glareolus). | the importance of photoperiod and ambient temperature on the accumulation of cadmium in the liver and kidneys of bank voles was determined in the present study. males and females, aged 1 month, were given 3.0 micrograms cd ml-1 drinking water and divided into four groups according to photoperiod (16 h light/8 h dark and 8 h light/16 h dark) and ambient temperature (20 or 5 degrees c); liver and kidneys were removed for cadmium as well as copper, iron and zinc analyses at the end of 6 weeks. bank ... | 1996 | 8837457 |
| a combined stereotaxic adaptor and anaesthesia apparatus for microdialysis studies in small rodents. | intracerebral microdialysis in the bank vole (clethrionomys glareolus) challenges the accuracy and precision of the stereotaxic implantation technique because of the small brain size. in this paper, a miniaturized stereotaxic head holder is described that allows precise alignment of bone landmarks on the skull and prevents all movement after fixation by clamping the skull symmetrically at the os parietale and at the os nasale. in addition, the head holder is adapted for inhalation anaesthetic de ... | 1996 | 8884616 |
| removal of the olfactory system modifies male bank vole behaviour in the presence of females. | the role of the olfactory and vomeronasal systems of male bank voles in behavioural interaction with females was investigated. bulbectomy (obx), but not vomeronasalectomy (vnx), resulted in a decrease of female-stimulated ultrasonic calling by males, manifested as longer latency to the first call and fewer calls by obx males in comparison to vnx or sham-operated (sham) animals. obx males showed significantly fewer non-aggressive approaches but more attacks toward females. females were less aggre ... | 1996 | 24897157 |
| photoperiodic elevation of testicular zinc protects seminiferous tubules against fluoride toxicity in the bank vole (clethrionomys glareolus). | recent work has shown that a high fluoride (f) intake in rodents leads to histopathologic changes in the germinal epithelium of testes and to zinc deficiency in the testis and several other organs. the purpose of the present study was to determine whether an elecvation of testicular zinc concentration during fluoride exposure could protect the testes of bank vole from damage. the elevation of testicular zinc was achieved by exposing the bank voles to a long photoperiod (16 hr light/8 hr dark). t ... | 1996 | 8665403 |
| [dynamics of sizes of daily home ranges of female bank voles during the breeding period]. | | 1995 | 8640119 |
| [character of reproductive losses in bank vole populations living in a habitat polluted with toxic substances]. | | 1995 | 8580861 |
| impact of an environmentally-realistic intake of cadmium on calcium, magnesium, and phosphate metabolism in bank voles, clethrionomys glareolus. | oral intake of cadmium can disrupt calcium metabolism in laboratory rodents. if this occurs in free-living wild rodents, reproductive potential, growth, and survival could be adversely affected. this study investigated whether an environmentally-realistic intake of cadmium (1.5-1.7 mg/kg bw/24h) by bank voles, clethrionomys glareolus, affected uptake and assimilation of calcium and also that of magnesium and phosphorus, two elements metabolized in close association with calcium. mineral metaboli ... | 1995 | 7661627 |
| reproductive costs and litter size in the bank vole. | the potential reproductive costs for free-ranging bank vole (clethrionomys glareolus) offspring and mothers were assessed by manipulating litter size and by determining the effects of nursing varied numbers of offspring. litter enlargement did not increase the number of weanlings per mother. the mass of juveniles was significantly lower in the enlarged litters and higher in the reduced litters, compared to the control group. however, the survival of juveniles from weaning aged three months did n ... | 1995 | 7644546 |
| home bedding modifies ultrasonic vocalization of infant bank voles. | bank vole,clethrionomys glareolus, pups, similar to many other infant rodents, emit ultrasonic vocalizations when they are removed from the nest and cooled. infants exposed to bedding from their home cage produced fewer and shorter calls than infants tested without bedding. sound frequencies were significantly higher in infants exposed to home bedding than in other experimental groups. these results provide evidence that infant bank voles are able to identify the presence of home bedding, probab ... | 1995 | 24234251 |
| [phenotypic diversity in continuous and discrete populations exemplified by the bank vole under the conditions of the southern taiga]. | variation of 6 bilateral quantitative and 32 nonmetric skull traits of the bank vole (clethrionomys glareolus schreb.) was studied in two types of population. continual one is represented by a large population continuously distributed in main part of the central forest reserve. discrete type (corresponding to classical one-dimensional "step model") is represented by population fragmented into a set of small subunits by landscape barriers. territories covered, biotopic diversity and time of exist ... | 2010 | 7975886 |
| [radioresistance of a population of bank voles (clethrionomys glareolus) in radioactive pollution conditions]. | | 1994 | 7951016 |
| chemical signals involved in spacing behavior of breeding female bank voles (clethrionomys glareolus schreber 1780, microtidae, rodentia). | in order to study the mechanism involved in the seasonal territoriality of breeding bank voles, the social behavior and scent marking of paired females were observed throughout a reproductive cycle. initially unfamiliar females were kept in large laboratory pens provided with individual burrows. after a brief period of hostility, females behaved in a friendly manner towards each other, sharing the same nest even in the presence of a male and until the middle of pregnancy. they scarcely marked wi ... | 1994 | 24242128 |
| postnatal changes in subcellular distribution of copper, zinc and metallothionein in the liver of bank vole (clethrionomys glareolus): a possible involvement of metallothionein and copper in cell proliferation. | 1. dramatic interdependent changes in the intracellular concentrations of copper (cu), zinc (zn) and metallothionein (mt) in the liver of bank voles during the first 30 days of their life were observed. 2. the post-mitochondrial cu, zn and mt (zn-mt) abruptly decreased between 1 and 3 days following birth but the nuclear mt (cu-mt) and cu increased at the same time, suggesting that cu displaced zn already bound to mt in the cytoplasm and subsequently the complex cu-mt was translocated to the nuc ... | 1992 | 1360385 |
| seasonal changes in subcellular distribution of zinc, copper, cadmium and metallothionein in the liver of bank vole (clethrionomys glareolus): a possible essential role of cadmium and metallothionein in the hepatic metabolism of copper. | 1. an increase in total zn concentration in the liver of sexually mature bank voles in spring and summer was primarily accompanied by an increase in zn levels in the nuclear and mitochondrial-lysosomal fractions, while in immature voles in an analogous situation, zn tended to concentrate mainly in the post-mitochondrial fraction. 2. seasonal changes in cu concentration in all subcellular fractions followed closely those of total hepatic cu; however, the mitochondrial-lysosomal cu underwent the m ... | 1992 | 1350961 |
| the ecology of territoriality in bank voles. | | 1991 | 21232488 |
| frequency of isolation of campylobacter spp., yersinia spp. and salmonella spp. from small mammals from two sites in southern britain. | small wild mammals were trapped at two sites in the united kingdom: skomer island, dyfed and a farm in dorset. faecal samples were collected from 43 rodents of two species on skomer and tested for the presence of yersinia. samples of faeces and of material from the terminal ileum were collected from 141 animals of eight species in dorset and tested for campylobacter, yersinia and salmonella. in addition some samples of spleens from the dorset animals were tested for campylobacter. four typable i ... | 1991 | 26927846 |
| environmental impact of the chernobyl accident: mutagenesis in bank voles from sweden. | an investigation was carried out in sweden aimed at studying the possible genetic effects of the chernobyl fallout on wild small mammals. the bank voles (clethrionomys glareolus schreb.) were obtained from three differently contaminated areas in sweden and, for control, in an area with negligible contamination by fallout. radionuclide determinations to assess the content of 137cs and mutagenicity tests (bone marrow micronucleus test and sperm abnormality assay) were performed. the results obtain ... | 1991 | 1671073 |
| breeding of captive bank voles (clethrionomys glareolus) related to dynamics of source populations. | proportionately fewer female bank voles from cyclic or dense populations bred than did females from sparse or non-cyclic populations when brought into a laboratory and kept as monogamous pairs for at least 1 year. similarly, fewer litters were produced by females from cyclic or dense populations. breeding frequency and litter production did not differ in the second laboratory generation. large variance in litter numbers indicated further changes in reproduction in response to the laboratory envi ... | 1990 | 2205723 |
| avoidance of used endometrial sites by blastocysts of the bank vole, clethrionomys glareolus. | in bank voles blastocysts arising from mating immediately after parturition do not implant in used zones of the preceding pregnancy but in the regions between them. however, if mating is postponed until 12 or more days after parturition blastocysts do implant in used zones of the previous pregnancy. implantations also occur at zones used two pregnancies previously. it seems likely that the absence of implantations at recently used zones of the uterus is determined by the uterus rather than blast ... | 1990 | 2205722 |
| different demography of friends and strangers: an experiment on the impact of kinship and familiarity in clethrionomys glareolus. | we examined demographic effects of familiarity and relatedness in the bank vole clethrionomys glareolus (schreber) in four 0.5-ha enclosures in central finland. in two enclosures were mature voles which had overwintered together and some of their mature off-spring (hereafter referred to as "friends"), and in the other two individuals of the same species captured from different localities near the study area ("strangers"). the experiment lasted from june to september. the populations of friends r ... | 1990 | 28313003 |
| bank voles as monitors of environmental contamination by heavy metals. a remote wilderness area in poland imperiled. | concentrations of heavy metals (cd, pb, cu, zn, fe) were determined in the tissues of bank voles collected in polluted forest sites in southern poland and in białowieza national park. the highest cadmium concentrations were found in livers (0.9-12.8 microg g(-1)) and kidneys (3.2-29.6 microg g(-1)), whereas the lowest were in bones (0.2-0.9 microg g(-1)). the lead concentrations found in kidneys and bones ranged from 9.5 to 40.0 microg g(-1). the ranges of zinc, iron and copper concentrations in ... | 1990 | 15092204 |
| social organization of the bank vole (clethrionomys glareolus, schreber 1780) and its demographic consequences: a model. | a unified model of social organization, spatial distribution, and demographic parameters in the bank vole was developed. it is based on social relations among females, among males and also between reproductive females and males. in the model, social status and reproductive condition of an individual depend exclusively on interactions with its nearest neighbours. a result of interactions between two neighbours remains "local", i.e., it cannot affect other, more distant individuals. the simulated ... | 1989 | 23494348 |
| [the reaction of a population of redbacked voles (clethrionomys glareolus) to pollution of the biogeocenosis by 137cs]. | | 1989 | 2698793 |
| changes in naloxone and haloperidol effects during the development of captivity-induced jumping stereotypy in bank voles. | captivity-induced stereotypies in bank voles (clethrionomys glareolus) were inhibited at the age of 1, 2, 4, 6, 8 and 10 months by 0.2 mg/kg haloperidol s.c., while 35 mg/kg naloxone s.c. only inhibited them at the age of 4-6 months. other activities were not significantly inhibited. the change in the naloxone effect was not due to desensitization as animals treated only at 6 or 8 months reacted similarly. it is suggested that the expression of such stereotypies is influenced by endogeneous brai ... | 1988 | 3063550 |
| effect of differential photoperiod treatment on leydig cell ultrastructure in the bank vole (clethrionomys glareolus, s.). | juvenile bank voles (18-22 days of age) born and reared in a stimulatory long photoperiod (18l:6d, lights on 0600-2400 hr) were subjected either to a long photoperiod (18l:6d, group l) or to a short photoperiod (6l:18d, lights on 0800-1400 hr, group s) for 6 to 8 weeks whereafter the animals were killed by decapitation. possible photoperiod-induced changes in leydig cell ultrastructure were studied by conventional transmission electron microscopy and stereological methods. striking differences i ... | 1988 | 3060394 |
| effect of lead on postnatal development of the bank vole (clethrionomys glareolus). | | 1988 | 3288128 |
| 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 |
| ovarian activity in outdoor and laboratory bred bank vole (clethrionomys glareolus) females. | | 1988 | 3069503 |
| the influence of cage size and environmental enrichment on the development of stereotypies in bank voles (clethrionomys glareolus). | bank voles were bred and lived in 4 different environments: small barren cages (sb), small enriched cages (sr), big barren cages (bb) and big enriched ones (br). ten different behaviours were recorded at the age of 30, 45, 60, 61, 75 and 90 days. between day 60 and 61, within each experimental environment, the group of voles performing stereotypies (st) and the group of those which did not (nst) were each split in two, one part being transferred to a new environment, the other remaining in the s ... | 1987 | 24897258 |
| the effect of interference in catecholamine biosynthesis on captivity-induced jumping stereotypy in bank voles (clethrionomys glareolus). | the level of the captivity-induced jumping stereotypy in bank voles was significantly decreased by 150 and 200 mg/kg alpha-methyl-para-tyrosine and increased by 200 mg/kg l-dopa while 20 and 40 mg/kg fusaric acid had no effect. none of the other movements were affected by these drugs (as measured by a general activity meter), except for a nonsignificant decrease after treatment with fusaric acid. these results suggest that cerebral dopaminergic neuronal systems and not noradrenergic neuronal sys ... | 1987 | 3555375 |
| stereotyped behaviour, hyperaggressiveness and "tyrannic" hierarchy induced in bank voles (clethrionomys glareolus) by a restricted cage milieu. | this investigation was originally conceived as a further development of studies made with the "amphetamine model" of psychosis. since amphetamine itself seemed to be the most important flaw in this model, it was judged promising to study abnormal behaviour in animals elicited without the use of drugs. bank voles were placed in two different cage milieux, a restricted milieu approaching usual laboratory conditions for experimental animals, and an enriched milieu offering opportunities for satisfa ... | 1987 | 3299497 |
| 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 |
| puberty delay of bank vole females in a high-density population. | the onset of puberty in bank vole females was studied, with uterine weight, ovarian weight, and the number of large ovarian follicles used as indicators of gonadal activity. maturation of females born at the beginning of the reproductive season was suppressed by the presence of other females. puberty of animals born at the end of season was primarily influenced by climatic variation. | 1986 | 3539213 |
| seasonal variations of testicular activity in juvenile and mature bank voles (clethrionomys glareolus). | | 1986 | 3545920 |
| analysis of interspecific relationships in mesostigmatid mites (acari: mesostigmata) in the nests of the bank vole (clethrionomys glareolus (schreber, 1780)). | an analysis is presented of a community of mesostigmatid mites from the nests of clethrionomys glareolus found in the forest biotopes of vsetínské beskydy mts. (north moravia) throughout all seasons of the year. main attention was paid to the structure of the nest community, relationships of mites to their host and interspecific relationships in the mites themselves. primarily cluster and factor analyses based on correlation matrix were used for mathematical assessment. the particular elements o ... | 1986 | 3530922 |
| photoperiodic modulation of testicular lh receptors in the bank vole (clethrionomys glareolus). | the temporal changes in testicular binding of 125i-labelled hcg in juvenile bank voles (18 days of age, born and reared in a 18l:6d photoperiod) exposed to a long (18l:6d, group l) or short (6l:18d, group s) photoperiod for 0, 3, 7, 14 and 42-56 days were investigated. during testicular maturation, in group l, there was a slight initial decrease in lh receptor numbers per testis followed by a marked prepubertal rise during the initial phase of rapid testicular growth after which a decrease took ... | 1985 | 2999384 |
| selective damage to tree-seedlings by bank voles (clethrionomys glareolus). | (1) small saplings of tilia cordata, when planted in deciduous woodlands, are damaged or destroyed by rodents. (2) experiments with captive animals show that the damage is identical with that caused by bank voles. (3) bank voles are present at all sites where damage occurs. (4) small saplings of betula spp. established naturally in the sites are very rarely damaged. (5) seedlings of quercus spp. and fagus silvatica are damaged or destroyed but small saplings suffer little or no damage attributab ... | 1985 | 28311570 |
| marking urine and preputial gland secretion of male bank voles (clethrionomys glareolus l.) chemical analyses and behavioral tests. | urine and preputial gland secretion of male bank voles were analyzed by gas chromatography (gc) and mass spectrometry (ms) (selected ion monitoring, sim). gc-ms analyses showed the presence of hexadecyl acetate in preputial gland secretion and in marking urine but not in metabolic urine. female bank voles responded more strongly to marking urine of males than to metabolic urine, and they responded more to preputial gland secretion (pure or added to urine) than to metabolic urine. dominant males ... | 1984 | 24317582 |
| composition of cyclic and non-cyclic vole populations: on the causes of variation in individual quality among clethrionomys glareolus in sweden. | a cyclic clethrionomys glareolus population from north sweden was compared with a non-cyclic population from south sweden regarding age structure, body weight, reproductive development and suppression, and sex ratios.the non-cyclic population, after years with winter breeding, was characterized by especially early and intense breeding in spring and many post-reproductive animals in autumn. non-cyclic populations with no winter reproduction were similar to increase years in cyclic populations. in ... | 1984 | 28311014 |
| influence of age and artificial vaginal stimulation on fertility in female bank voles (clethrionomys glareolus). | female bank voles mated when 30-50 days old showed only 20-25% fertility at the first mating, but fertility increased to about 80% in animals greater than 100 days of age at the first mating. young females subjected to artificial cervical stimulation after the completion of a normal mating showed a much higher fertility than normally mated controls (76 compared with 29%). the reason for the low fertility therefore appears to be that young females require more stimulation to activate the corpora ... | 1984 | 6374130 |
| some data on the fertility of bank voles (clethrionomys glareolus britannicus) in the laboratory supporting the hypothesis of induced ovulation. | 83 (40%) litters with an average of 3.42 pups and unbiased sex ratio were born of 207 couples. fertility and litter average were higher in summer and autumn. most females were fertilized on the 1st day spent with a male, which supports the mating-induced ovulation hypothesis. infantile mortality was highest at birth and during the 1st 5 days of life. 26% of the pups died before weaning (day 25), i.e. an average of 1 per litter. | 1984 | 10628783 |
| activity in the corpora lutea resulting from sterile matings in clethrionomys glareolus: a histochemical study. | the capacity for steroid production in the corpora lutea (cl) of bank voles was examined by enzyme histochemistry for 3 beta-hydroxysteroid dehydrogenase. the results revealed similar activity in the cl resulting from sterile matings and the cl of pregnancy 2 days after mating. six days after mating, the cl of pregnancy showed a strong reaction, while there was almost no reaction in the cl from sterile matings, which were clearly regressed at this time. it is suggested that the cl from sterile m ... | 1983 | 6355353 |
| [data on the distribution and ecology of ixodes trianguliceps (ixodidae) in kharkov province]. | in the ranges of the kharkov district ixodes trianguliceps bir. is distributed in the limits of forest-steppe zone from the western border to the valley of the seversky donets. through the forests along the seversky donets the species gets to the steppe zone. most abundant the species is in aspen groves, its main host -- clethrionomys glareolus schreb. the peak of abundance was recorded in june. | 2007 | 6359025 |
| influence of sexual experience and social environment on fertility and incidence of mating in young female bank voles (clethrionomys glareolus). | between 30 and 40 days of age, female bank voles were kept singly, in female pairs, separated from an adult male by a wire mesh, or paired with a vasectomized male. at day 40 they were paired with adult intact males. fertility at the first mating was low (22-25%), but if the females had previously mated with the vasectomized male fertility of the subsequent mating with the intact male was significantly increased (63%). sterile matings therefore had a priming effect on the females, and could be i ... | 1983 | 6350570 |
| testicular steroid metabolism in juvenile bank voles (clethrionomys glareolus schreber) exposed to different photoperiods: an in vitro study. | juvenile male bank voles (18-22 days of age) were either sacrificed immediately (group c) or subjected first to a long (18l:6d, lights on 0600-2400; group l) or a short (6l:18d, lights on 0800-1400; group s) photoperiod for 1 week. the animal were killed by decapitation, the gonads were excised, and minced, and the conversion of [4-14c]pregnenolone (delta 3p) and [4-14c]dehydroepiandrosterone (dha) to metabolites was studied in vitro. the radioactive steroids formed were separated and identified ... | 1983 | 6226556 |
| fertility of the post-partum bank vole (clethrionomys glareolus). | analysis of records of a bank vole breeding colony suggests that fertility is high immediately post partum, declines during established lactation and rises after weaning of young. mating tests with lactating females and females whose young had been removed at birth showed that receptivity is reduced during lactation, although amongst the females which did mate there was no difference between lactating and non-lactating animals in the proportion which produced litters. however, average size of li ... | 1983 | 6341576 |
| temporal changes in testicular histology and steroidogenesis in juvenile bank voles (clethrionomys glareolus, schreber) subjected to different photoperiods. | | 1983 | 6339204 |
| ultrastructural studies on the thymus gland after the administration of phenylhydrazine to bank voles (clethrionomys glareolus). | the thymus glands of wild and laboratory reared bank voles (clethrionomys glareolus) were examined for ultrastructural changes before and after the administration of low (20 mg/kg) and high (60 mg/kg) doses of phenylhydrazine (phz) given intraperitoneally on days 0, 1 and 3 of a dosing regime. erythrocytes developed in focal aggregations in the subcapsular and outer cortical zones. there was a marked depletion of the subcapsular cortex following drug treatment that was reversed with time. a larg ... | 1983 | 6349818 |
| the life-cycle of eimeria cernae levine and ivens, 1965 in the bank vole, clethrionomys glareolus. | eimeria cernae is recorded for the first time in england and the life-cycle is described in experimentally infected bank-voles (clethrionomys glareolus). the pre-patent period was 6 days and the patent period was 4-6 days. oocysts were ellipsoidal in shape and measured 20.2 x 15.9 micrometers. sporocysts, measuring 11.5 micrometers long and 6.8 micrometers wide, possessed a small stieda body and contained a mass of granular sporocyst residuum. the endogenous stages developed in the epithelial ce ... | 1982 | 6757845 |
| responses of female bank voles (clethrionomys glareolus) to dominant vs subordinate conspecific males and to urine odors from dominant vs subordinate males. | | 1982 | 6763863 |
| increased fertility in young primiparous female bank voles, clethrionomys glareolus, treated with prolactin or progesterone after mating. | | 1982 | 6750106 |
| effect of photoperiod on the testicular steroidogenesis of the bank vole (clethrionomys glareolus, schreber): an in vitro study. | | 1982 | 6213444 |
| effect of limited and complete mating on ovaries and adrenals in band voles, clethrionomys glareolus. | complete mating of voles induced ovulation and large and healthy cl were formed. by 4 days after mating adrenal weight was twice that in unmated animals. limited amounts of mating (i.e. 1-3 intromissions) induced ovulation, but the resulting cl were small and short-lived and no adrenal hypertrophy was seen. if limited mating was followed by mechanical genital stimulation, large cl and adrenal hypertrophy were induced. mechanical genital stimulation alone induced ovulation (mostly small cl) in so ... | 1982 | 7040648 |
| [effect of cyclophosphane on the bone marrow of redbacked voles]. | the paper presents the data on the effect of cyclophosphane on the bone marrow cells of bank voles (clethrionomys glareolus). the percentage of aberrant cells after injection of cyclophosphane was shown to be higher in experimental animals than in control at different intervals after injection, mitotic activity and the interphase death being decreased and increased, respectively. | 1981 | 7028567 |
| adrenal growth during pregnancy in the bank vole, clethrionomys glareolus: initiation by mating. | | 1980 | 7000328 |
| reproduction in a laboratory colony of bank vole, clethrionomys glareolus. | | 1980 | 7000324 |
| a histochemical study on the effects of photoperiod on gonadal and adrenal function in the female bank vole (clethrionomys glareolus, schreb.). | | 1980 | 6993280 |
| effect of social rank on the growth of the preputial glands in male bank voles, clethrionomys glareolus. | | 1980 | 6994144 |
| the occurrence of erythropoiesis in the thymus of the bank vole (clethrionomys glareolus). | the thymus of wild young and adult bank voles (clethrionomys glareolus) was examined by histological methods for the presence of developing erythroid cells. nucleated erythroid cells were observed in 26% of the glands examined by light microscopy and in 69% of the glands examined by electron microscopy. the largest number of developing erythroid cells was observed in the thymus of pregnant females, also showing raised reticulocyte counts (3.1-10.2%). however, erythropoiesis could also be found i ... | 1980 | 7000364 |
| [tissue radiosensitivity of bank voles living under different ecological conditions]. | | 2006 | 6444748 |
| delayed implantation in lactating bank voles, clethrionomys glareolus. | the time of blastocyst implantation in lactating and non-lactating female bank voles was studied. in primiparous females implantation started 4 days and 9-11 h after mating. a delayed implantation of at least 1 1/2 days was found in lactating, multiparous females when compared to non-lactating, multiparous and primiparous females. | 1979 | 390140 |
| age and sex differences in the distribution of lipids, tetrazolium reductases and hydroxysteroid dehydrogenases in the gonads and adrenals of the bank vole (clethrionomys glareoulus): a histochemical study. | | 1979 | 385065 |
| a histochemical study on the effects of photoperiod on gonadal and adrenal function in the male bank vole (clethrionomys glareolus). | nadh- and nadph-diaphorases, 3alpha-, delta5-3beta-, 11beta- and 17beta-hydroxy-steroid dehydrogenases (hsd) and lipids were studied histochemically in the testes and adrenals of male bank voles kept in a long (16l:8d) or a short (8l:16d) photoperiod (groups l and s, respectively). at 67 days of age the group l males were heavier and had active and significantly larger testes than group s males. the testes of group s males were regressed and were also significantly smaller than those of 18-day-o ... | 1978 | 361952 |
| [comparative study of interphase cell death and of the degree of bone marrow aplasia in bank voles of the moscow area and in c57bl strain mice under ionizing radiation action]. | | 2006 | 345327 |
| remote control by males of ovulation in bank voles (clethrionomys glareolus). | | 1977 | 325204 |