| [observations of fleas of small mammals at the gran paradiso national park (italian occidental alps)]. | the siphonaptera of small mammals (nearly 200 rodents, insectivora and mustelids) of the parco nazionale del gran paradiso (western italian alps) have been collected and studied during the years 1973-75. all the animals have been captured at altitudes ranging from 1570 to 2400 m during different seasons. twelve genera and sixteen species have been identified, namely: chaetopsylla (c.) homoea homoea from mustela erminea; hystrichopsylla (h.) talpae talpae from clethrionomys glareolus; rhadinopsyl ... | 1975 | 1233394 |
| [taxonomy of ticks of the genus microtimyobia (acariformes: myobiidae: radfordia) and their distribution on voles (rodentia: cricetidae: arvicolinae)]. | a phylogenetic system of the subgenus microtimyobia (myobiidae: radfordia) elaborated for the first time by means of the software hennig-86 is proposed. the subgenus microtimyobia including three species groups, lemnina, hylandi and zibethicalis, was divided for a cladistic analysis into 6 operation units based mainly on a male genital shield structure. the analysis shows, that the zibethicalis group is a polyphyletic, while the hylandi and lemnina groups are monophyletic. host-parasite associat ... | 1998 | 9813883 |
| comparative study of g- and c-banded chromosomes of five species of microtidae: a chromosomal evolution analysis. | g-banded karyotypes were compared in the following species of microtidae: microtus nivalis, m. cabrerae, m. arvalis, and arvicola sapidus. previous observations on a. sapidus and a. terrestris were also incorporated in this study. the results show that robertsonian translocations and pericentric inversions are common mechanisms involved in the karyotypic evolution of this group. interspecific differences on the g-banding patterns were also analysed, and an attempt was made to establish a presump ... | 2011 | 3061873 |
| bank voles (myodes glareolus) and house mice (mus musculus musculus; m. m. domesticus) in europe are each parasitized by their own distinct species of aspiculuris (nematoda, oxyurida). | the molecular phylogeny and morphology of the oxyuroid nematode genus aspiculuris from voles and house mice has been examined. worms collected from myodes glareolus in poland, eire and the uk are identified as aspiculuris tianjinensis, previously known only from china, while worms from mus musculus from a range of locations in europe and from laboratory mice, all conformed to the description of aspiculuris tetraptera. worms from voles and house mice are not closely related and are not derived fr ... | 2015 | 26302680 |
| a comparative analysis of the heavy metal loading of small mammals in different regions of bulgaria ii: chromosomal aberrations and blood pathology. | heavy metal content was monitored in small mammals inhabiting mountain ecosystems and two industrial polluted regions in bulgaria. rodents (microtus arvalis, m. rossiaemeridionalis, clethrionomys glareolus, pitymys subterraneus, chionomys nivalis, apodemus flavicollis, a. sylvaticus, and mus macedonicus) were used as zoomonitors. pathological changes in chromosome status, hematological indices, and blood cell morphology were analyzed in the context of heavy metal bioaccumulation. significant cor ... | 2003 | 12550096 |
| characterization of the satellite dna msat-160 from species of terricola (microtus) and arvicola (rodentia, arvicolinae). | in the subfamily arvicolinae (cricetidae, rodentia) the satellite dna msat-160 has been so far described in only some species from the genus microtus and in one species from another genus, chionomys nivalis. here we cloned and characterized this satellite in two new arvicoline species, microtus (terricola) savii and arvicola amphibius (terrestris). we have also demonstrated, by pcr and fish, its existence in the genomes of several other species from both genera. these results suggest that msat-1 ... | 2010 | 20830505 |
| sex chromosomes pairing in two arvicolidae species: microtus nivalis and arvicola sapidus. | arvicolid rodents present both synaptic and asynaptic sex chromosomes. we analyzed the pairing behaviour of sex chromosomes in two species belonging to this rodent group (microtus nivalis and arvicola sapidus). at pachynema, the sex chromosomes of both species paired in a small region while the rest remain unsynapsed. consequently at metaphase i, sex chromosomes present end-to-end association. thus, the pairing behaviour of sex chromosomes in these species is very similar to that previously desc ... | 2003 | 12921162 |
| variable conservation of nucleolus organizer regions during karyotypic evolution in microtidae. | the location of the nucleolus organizer regions (nors) was studied in four species of microtidae (microtus nivalis, m. cabrerae, m. arvalis, and arvicola sapidus). the comparative study of these locations shows that some nors have been conserved despite the chromosome rearrangements that have occurred through karyotypic evolution, while others have been lost. in addition, there are many chromosomes in which nors seem to have appeared or been lost without apparent relation to the chromosome rearr ... | 1990 | 2185132 |
| successful by chance? the power of mixed models and neutral simulations for the detection of individual fixed heterogeneity in fitness components. | heterogeneity in fitness components consists of fixed heterogeneity due to latent differences fixed throughout life (e.g., genetic variation) and dynamic heterogeneity generated by stochastic variation. their relative magnitude is crucial for evolutionary processes, as only the former may allow for adaptation. however, the importance of fixed heterogeneity in small populations has recently been questioned. using neutral simulations (ns), several studies failed to detect fixed heterogeneity, thus ... | 2016 | 27277403 |
| snow vole (chionomys nivalis martins) affects the redistribution of soil organic matter and hormone-like activity in the alpine ecosystem: ecological implications. | in alpine environments, colonies of snow vole (chionomys nivalis martins) cause strong pedoturbation, which may affect humification process and soil organic matter (som) cycling, with repercussions on the hormone-like activity of organics. we investigated the effect of snow vole pedoturbation on the chemical and spectroscopic features of soil organic fractions, and the potential hormone-like activity of humic and fulvic acids (ha, fa). the study site was located on the high-mountain environment ... | 2015 | 26668721 |
| noninvasive molecular and morphological evidences for an undiscovered population of snow vole in southern spain. | capturing wild animals can be time consuming and difficult or even impractical. noninvasive sampling is potentially a cost-effective and efficient means to monitor wild animals, thereby avoiding the need of capture and disturb species in the wild. on the basis of the morphological and genetic analyses of owl pellet contents, a so far undetected european snow vole (chionomys nivalis) population was discovered in the sierra segura mountain range (southern spain). the mtdna sequence from the newly ... | 2013 | 23521599 |
| identifying y-chromosomal diversity by long-template pcr. | comparing y-chromosomal and mitochondrial haplotype variation is a promising approach to independently investigate paternal and maternal evolutionary histories in wild mammal populations. however, the difficulty of developing male-specific genetic markers, because of its distinctive genetic architecture and the general low level of polymorphisms observed on the y chromosome, hampers usually an effective application of this approach. here, we present a further method of the established y chromoso ... | 2011 | 21457481 |
| retroelements (lines and sines) in vole genomes: differential distribution in the constitutive heterochromatin. | the chromosomal distribution of mobile genetic elements is scarcely known in arvicolinae species, but could be of relevance to understand the origin and complex evolution of the sex chromosome heterochromatin. in this work we cloned two retrotransposon sequences, l1 and sine-b1, from the genome of chionomys nivalis and investigated their chromosomal distribution on several arvicoline species. our results demonstrate first that both retroelements are the most abundant repeated dna sequences in th ... | 2008 | 18836842 |
| microsatellite dna markers for the snow vole (chionomys nivalis). | a total of 14 dinucleotide microsatellite loci were characterized in the snow vole (chionomys nivalis). allelic polymorphism across all loci and 28 individuals representing a single population in the swiss alps was high (mean = 10.1 alleles). no significant linkage disequilibrium between pairs of loci and no departure from hardy-weinberg equilibrium were found. these loci will be useful for describing mating systems and population structure and to investigate the genetic consequences of a specie ... | 2008 | 21585856 |
| the snow vole (chionomys nivalis) as an appropriate environmental bioindicator in alpine ecosystems. | the snow vole (chionomys nivalis, martins, 1842) is a common species in the bulgarian high mountains. its populations are distributed in different altitudes, regions, and keep stable population density. this is the reason the species has been tested as a bioindicator for environmental quality in alpine ecosystems. the cumulative environmental impact in snow vole populations was evaluated using cytogenetical, hematological, ecotoxicological, radiometrical, ecophysiological, and morphophysiologica ... | 2008 | 18022674 |
| characterization of the satellite dna msat-160 from the species chionomys nivalis (rodentia, arvicolinae). | the satellite dna msat-160 has been previously characterized in several species of the genus microtus. here we present the characterization of msat-160 from chionomys nivalis, a species with a very primitive karyotype. as in other microtus species analyzed, c. nivalis msat-160 is at rich, has a monomer length of 160 bp, is undermethylated and is mainly located in all the pericentromeric heterochromatin of all autosomes and the x chromosome, but is completely absent from the y chromosome. hence, ... | 2007 | 16897458 |
| description of paranoplocephala yoccozi n. sp. (cestoda: anoplocephalidae) from the snow vole chionomys nivalis in france, with a review of anoplocephaud cestodes of snow voles in europe. | we describe paranoplocephala yoccozi n. sp. (cestoda: anoplocephalidae) from the snow vole chionomys nivalis in bourg-saint-maurice, french alps, compare it with several related species from rodents, and review the anoplocephalid cestodes of snow voles in europe. paranoplocephala yoccozi n. sp. is primarily distinguished from the related species by its large scolex of characteristic shape, robust neck region, and the structure of the cirrus sac, vitellarium and vagina. we show that the anoplocep ... | 2005 | 16218207 |
| [distribution and biology of the snow vole microtus nivalis martins in the region of briançon]. | | 1975 | 773716 |
| [record of heligmosomoides tatricus (erhardova, 1955) (nematoda heligmosominae) from microtus nivalis (rodentia) in france (author's transl)]. | | 2006 | 4457033 |
| morphological indices of the blood of microtus nivalis (martins, 1842) (mammalia, microtidae). | | 1966 | 5961645 |
| [genetic diversity of chionomys genus (mammalia, arvicolinae) and comparative phylogeography of snow voles]. | in the present study, the genetic polymorphism of the chionomys genus was examined based on the sequencing of the mitochondrial cytb gene and two nuclear exons, including chr exon 10 and brca1 exon 11. the distinct subdivision of the genus of snow voles into five lineages, including ch. nivalis, ch. gud, ch. roberti, and ch. aff. nivalis from turkey, as well as ch. aff. gud from turkey, was demonstrated. the branching order in the trees constructed based on the data for different genes was ambig ... | 2013 | 24159807 |
| predictive modelling in paleoenvironmental reconstruction: the micromammals of manot cave, israel. | this paper describes the micromammalian remains and paleoenvironment of the upper paleolithic sequence of manot cave (46-34 ka), southern levant. micromammal remains were identified from ahmarian (46-42 ka), levantine aurignacian (38-34 ka) and post-levantine aurignacian (34-33 ka) layers. to identify taphonomic agents, molar digestion was modelled for seven local raptor species, and model predictions were compared with observed digestion scores in the manot cave material. raptor species differe ... | 2019 | 31623862 |
| molecular survey of tularemia and plague in small mammals from iran. | introduction: plague and tularemia are zoonoses and their causative bacteria are circulating in certain regions of iran. this study was conducted to investigate potential disease reservoirs amongst small wildlife species in different regions of iran. methods: rodents, insectivores and hares from 17 different provinces of the country were collected in 2014 and 2015. samples were taken from the spleens of the animals and real-time pcr was applied to detect nucleic acid sequences that are specific ... | 2018 | 30042927 |
| relationship between heavy metal accumulation and histological alterations in voles from alpine and forest habitats of the west carpathians. | the interaction between toxic heavy metals and bio-elements in internal organs and femoral bones and their potential impacts on bone structural properties and renal histopathological changes in bank voles and snow voles were investigated. our results reveal that heavy metals hg and pb accumulate more in femoral bones of alpine habitats than forests. in snow voles, the parameters of the primary osteons' vascular canals (length, average perimeter and area) simultaneously decreased with an increase ... | 2020 | 32562226 |
| limited mass-independent individual variation in resting metabolic rate in a wild population of snow voles (chionomys nivalis). | resting metabolic rate (rmr) is a potentially important axis of physiological adaptation to the thermal environment. however, our understanding of the causes and consequences of individual variation in rmr in the wild is hampered by a lack of data, as well as analytical challenges. rmr measurements in the wild are generally characterized by large measurement errors and a strong dependency on mass. the latter is problematic when assessing the ability of rmr to evolve independently of mass. mixed ... | 2020 | 31985113 |
| mercury contamination of the snow voles (chionomys nivalis) in the west carpathians. | the subject of this research is mercury pollution in the alpine zone of the high tatra mountains (the west carpathians). the snow vole (chionomys nivalis) was chosen as a bioindicator. mercury concentrations in the tail tips from captured individuals were examined. the samples were collected over the span of 2 years, from may 2016 to november 2017. the smaller (1-year-old) individuals had higher mercury concentrations in their tails than the bigger (2-year-old) individuals, suggesting recent aer ... | 2019 | 31709481 |