| [morpho-functional characteristics of reproductive organs of rodents from the area affected by a plant, processing gas with the increased content of sulfur compounds]. | the biology of reproduction of 5 rodent species--small gopher (spermophilus pygmaeus pallas, 1778), reddish gopher (spermophilus major pallas, 1779), sasin lemmer (lagurus lagurus pallas,1773), forest mouse (apodemus sylvaticus linnaeus) and bank vole(clethrionomys glareolus schreber, 1780)--inhabiting the sanitary protective zone of the gas processing plant, was investigated with the use of histological, electron microscopical, immunocytochemical and morphometric methods. intensification of the ... | 2008 | 19102254 |
| rodent burrow network dynamics under human-induced landscape transformation from desert to steppe in kalmykian rangelands. | rodents play an important role in rangelands through the engineering of extensive burrow systems, which provides key habitats for many animal and plant species. we have analyzed the long-term variation in the abundance and distribution of rodent burrows in grazing ecosystems of southern russia (kalmykia) under the landscape change from desert to steppe caused by the drastic reduction of livestock after the collapse of the ussr in the early 1990s. we conducted burrow surveys in the "desert" (1980 ... | 2019 | 30983144 |
| sex accent and biphonation in the sound signal of ground squirrels (mammalia, rodentia). | the alarm call of the little ground squirrel (spermophilus pygmaeus), like those of six other eurasian ground squirrels, contains a high-frequency component. in males, the peak and maximum frequencies of the high-frequency component are higher than in females. biphonation of the alarm calls of sp. pygmaeus, sp. musicus, sp. xanthoprymnus, and sp. alaschanicus has been demonstrated, with the low- and high-frequency components generated by different sources in the vocal tract. the material was col ... | 2019 | 31571080 |
| [comparative morpho-functional characteristics of the organs of the reproductive system of small mammals under conditions of anthropogenic transformation of southern ural steppe ecosystems]. | the morpho-functional characteristics of reproductive organs of small mammals--striped field mouse (apodemus agrarius pallas, 1771), house mouse (mus musculus linnaeus, 1758), wood mouse (sylvaemus uralensis pallas, 1811), common vole (microtus arvalis pallas, 1778), bank vole (clethrionomys glareolus schreber, 1780), steppe lemming (lagurus lagurus pallas, 1773), little suslik (spermophilus pygmaeus pallas, 1778), and red-heeked suslik (spermophilus major pallas, 1779)--belonging to the populat ... | 2013 | 24592716 |
| phylogenetic analysis of entomoparasitic nematodes, potential control agents of flea populations in natural foci of plague. | entomoparasitic nematodes are natural control agents for many insect pests, including fleas that transmit yersinia pestis, a causative agent of plague, in the natural foci of this extremely dangerous zoonosis. we examined the flea samples from the volga-ural natural focus of plague for their infestation with nematodes. among the six flea species feeding on different rodent hosts (citellus pygmaeus, microtus socialis, and allactaga major), the rate of infestation varied from 0 to 21%. the propaga ... | 2014 | 24804197 |
| experimental infection of ground squirrels (citellus pygmaeus pallas) with yersinia pestis during hibernation. | in this study, we investigated the capability remain latent infection of yersinia pestis in ground squirrels (citellus pygmaeus pallas) after their challenge with y. pestis over the hibernation period. | 2007 | 16580730 |
| [erythrocyte 2,3-diphosphoglycerate and hemoglobin electrophoretic characteristics in rodent adaptation to high mountains]. | adaptation of the erythropoetic system to hypoxia was shown to be different in different populations of montaine rodents of the central caucasus. one type of adaptation includes the increase in 2,3-diphosphoglycerate content of erythrocytes, the hemoglobin structure remaining apparently unchanged. this pattern was found in two groups of animals -- in one population of the ground squirrel citellus suslicus whose ancestors were introduced to the mountains some 25 years ago, and in the wood mouse a ... | 1979 | 516947 |
| [protective reflexes of citellus pygmaeus pall. to poisoned food]. | | 1955 | 14365650 |
| [gamasidae in ground squirrel citellus pygmaeus pall. in western kazakhstan]. | | 2010 | 13622058 |
| [heat production in the ground squirrel citellus pygmaeus during arousal from hibernation]. | heat production has been both measured experimentally (qcal) and calculated from oxygen consumption (qo2) in arousing ground squirrels during the rise of their body temperature. studies were made on total heat production during all the period of their warming as well as on the heat production at various stages of arousal. qcal was evaluated by changes in body temperature and those in heat losses via convection and irradiation (calorimetrically). during arousal of animals, their body temperature, ... | 2006 | 1217288 |
| [relationship between the concentration of vitamin a in the liver of the lesser suslik, citellus pygmaeus, and the altitude of its habitat]. | with the increase of the altitude of habitation of the ground-squirrel c. pygmaeus the content of vitamin a in its liver decreases. it is suggested that low vitamin a content of the liver in mountain animals is due to the increased utilization of vitamin a and carotenoids which provides for adaptation of these animals to lower partial oxygen pressure and lower temperature. | 2006 | 983560 |
| [species composition and population dynamics of fleas on the small suslik in stable foci of plague on the ergenin ridge]. | the paper presents results of investigations of fleas from citellus pygmaeus obtained during epizootological surveys in 1972-1974 (the ergenin ridge, kalmyk assr). the most high number of the main species of fleas of c. pygmaeus was observed in the first year of epizootic on the background of great abundance of the host (over 30 specimens per 1 hectare). in the following years the decrease in the number of c. pygmaeus was accompanied by the fall in the fleas number. the distribution of different ... | 2010 | 143643 |
| [incorporation of 1-14c-acetate into ubiquinone and sterols in liver slices from hibernating, awakening and active citellus pygmaeus]. | | 2014 | 654719 |
| [level of parasitic contact in colonies of the little suslik in the semideserts of western kazakhstan]. | field experiments were conducted during the settling of young animals of citellus pygmaeus in four areas 4 to 13.6 hectares in size. from 3 to 6 animals were caught in each area and labeled by administering radioactive substance (0.5 micrograms of glycine 14c or methionine 35s) and colouring hair on the head. in a day or two labeled sousliks were caught again and in 6-7 days a total catching of animals and collection of ectoparasites from their hair and burrows done. in al, 942 sousliks were cau ... | 2010 | 6240626 |
| [proteins and rna in the neuron-neuroglia system of the nucleus raphe dorsalis of the suslik brain during hibernation]. | the concentration and the content per cell of total proteins were found to be considerably decreased during deep hibernation (in december) in the ground squirrel (citellus pygmaeus pall.) brain n. raphé dorsalis neurons, whereas in glial cells--satellites with the same concentration, the protein content reduction was lesser than in the neurons. preceding the awakening (in march), the protein content in neuron cytoplasma increased, the protein concentration remaining equal to control, whereas the ... | 1985 | 2414139 |
| [dynamics of 3h-lysine incorporation into the retinal ganglion cells of the ground squirrel (citellus pygmaeus pallas) in active state and during hibernation]. | circahoralian rhythm of the intensity of 3h-lysine incorporation into proteins of the retina ganglionic cells and of the protein synthesis rate in the isolated retina with an amplitude of fluctuations of 35-36% of the mean has been found in active adult susliks. during hibernation, no circahoralian fluctuations of protein metabolism were recorded. circahoralian rhythms of protein metabolism can serve as a marker of the tissue functional activity. | 2013 | 3112671 |
| [the population structure of the geographic range of the caucasian suslik (citellus pygmaeus musicus, menetrie 1832) in the elbrus mountain area]. | population structure of caucasian gopher has been studied using genetic and evolutionary criteria. it was shown that plague [correction of plaque] affects genetic isolation of populations and microevolutionary processes. | 2006 | 2150139 |
| [the dynamics of the microbiocenosis in the burrows of the little suslik]. | microbiocoenoses being formed in burrows of little souslik have been investigated. microbiocoenoses of sloping burrows have most simple organization. comparative analysis of the fauna and functional structure, conducted during the spring-summer period, has not shown the existence of any directed process in the development of microbiocoenoses of sloping burrows. on the contrary, microbiocoenoses of vertical nest burrows can be regarded as biocoenotic systems dynamic in space and time. here in the ... | 2017 | 1364523 |
| [a burrow of a little ground squirrel as a consortium]. | structure of consortia as an animal community inhabiting a mammalian burrow with an example of the little souslik spermophilus pygmaeus pallas from western kazakhstan was studied. species composition, numbers and distribution of invertebrates in different types of burrows and nests of the little souslik were examined on the background to their food dependencies on the host. the consortia is considered as a system of concenters around the host of burrow (center of community, cc). recognized conce ... | 2017 | 14658307 |
| [lipid peroxidation and the status of the antioxidant system in the tissues of ground squirrel (citellus pygmaeus) in the dynamic of hibernation]. | the rate of lipid peroxidation and activities of superoxide dismutase, catalase, and hydrophilic antioxidants were studied in the hypothalamus, liver, kidney, myocardium, skeletal muscle, and serum of citellus pygmaeus upon entering hibernation (18-20 degrees c), in early torpor (7-10 degrees c), and after hibernation for a week or three months (5-10 degrees c). during hibernation, lipid peroxidation proved to either decrease or remain at the level characteristic of waking animals. high antioxid ... | 2016 | 14994468 |
| occlusal pattern of cheek teeth in extant spermophilus: a new approach to the identification of species. | discrete characters of the occlusal surface (additional cusps) have been studied to elaborate a new approach to the identification of the ground squirrel species spermophilus odessanus, s. suslicus, s. pygmaeus, s. citellus, and s. xanthoprymnus. data on the presence/absence of the additional cusps have been represented as star plots and, in addition, have been studied using discriminant function analysis. the species-specific sets of the characters (patterns of bunodonty) have been revealed and ... | 2016 | 27018323 |
| chromosomal instability in rodents caused by pollution from baikonur cosmodrome. | an assessment of the health status of ecosystems exposed to man-made pollution is a vital issue for many countries. particularly it concerns the consequences of contamination caused by the activity of the space industry. each rocket launch is accompanied by the introduction of parts of the rocket propellant into the environment. this study aims to scrutinize the effect of the components of rocket fuel on the induction of lipid peroxidation and chromosomal aberrations on rodents inhabiting the ar ... | 2014 | 24990120 |