| [heterochromatin of the rat-like hamster tscherskia triton de winton (rodentia, cricetinae). i]. | | 1978 | 80051 |
| [heterochromatin of the rat-like hamster tscherskia triton de winton (rodentia, cricetinae), ii]. | differential staining of rat-like hamster chromosomes revealed: 1) c- and g-banding of chromosomes depending upon the giemsa solvent (distilled h2o and phosphate buffer correspondingly) in case of ordinary staining; 2) dependence of c-banding pattern on the c-method; 3) different resistance of c-bands to trypsin action; 4) dependence of q-bands on the fluorochroms employed (a, 33258 h, ao), the second non-fluorescent (a, 33258 h) near-centrometric heterochromatic region is brilliantly fluorescin ... | 1978 | 80052 |
| [highly repetitive sequences in the genome of the rat-like hamster tscherskia triton are represented by two families of dispersed ubiquitous repeats]. | | 1989 | 2544388 |
| [organization of mammalian genome replication: data on the high rate of dna replication in replicons of structural heterochromatin]. | by the autoradiography, the increase of the mean rate of replication fork movement in dna was shown for human skin fibroblasts during s-period induced by reseeding the stationary culture; the portion of high-rate replicons growing parallel to the increase in numbers of cells, in which the constitutive heterochromatin was replicating. furthermore, the heterogeneity of replicons was investigated in regard to the rate of dna chain growth in asynchronous cell populations of human and three rodent sp ... | 1980 | 6998067 |
| goblet cell mucins of four genera of the subfamily cricetinae with reference to the protective activity against strongyloides venezuelensis. | goblet and mast cell responses in the jejunum of four genera, mesocricetus auratus (syrian hamster), phodopus campbelli, cricetulus griseus (chinese hamster), and tscherskia triton, belonging to the subfamily cricetinae, were examined after infection with strongyloides venezuelensis. parasite eggs became detectable in faeces of all four genera on day 7. faecal egg count peaked around day 8 in c. griseus and t. triton and around day 14 in m. auratus and p. campbelli. in m. auratus and p. campbell ... | 1994 | 7870465 |
| epizootiological survey of hantavirus among rodent species in ningxia hui autonomous province, china. | hantaviral antibodies were detected in the sera from apodemus (a.) agrarius and a. peninsulae captured in ningxia province, china by several different serological diagnostic methods. a total of 409 sera from rodent and insectivore species were collected in 1999 and examined by indirect immunofluorescent antibody assay (ifa). among them, 19 of 191 (9.9%) sera of a. agrarius and 1 of 13 (7.7%) sera of a. peninsulae were positive for hantaviral antibodies. the other species (rattus norvegicus, mus ... | 2001 | 11590918 |
| scent, social status, and reproductive condition in rat-like hamsters (cricetulus triton). | this study investigated the interrelations among scent glands, social status, and reproductive conditions in male rat-like hamsters (cricetulus triton), along with differential attraction of estrous females to conspecific males with different social status and reproductive condition. first, there were positive correlations between testes weights and flank glands and midventral glands. second, castrated males were dominated by both intact males and castrated males treated with testosterone. third ... | 2001 | 11790399 |
| [investigation on natural foci of autumn-winter type tsutsugamushi disease in shandong province]. | in order to provide basic data of tsutsugamushi disease in shandong province, for the control and prevention of this disease in residents and army-men. | 2000 | 11860801 |
| the rat-like hamster, tscherskia triton, as a host for the parthenogenetic liver fluke fasciola sp. | metacercariae of parthenogenetic fasciola sp. triploid were inoculated into the rat-like hamster tscherskia triton. flukes at various stages of growth were found in the bile ducts of all 8 (50%) animals that survived from 42 to 90 days. the body length to width ratio ranged from 1.8 to 2.9, and flukes with the highest ratio were passed 68 days after inoculation. our results indicate that t. triton is a suitable host for experimental infection when induced by a small number of metacercariae (less ... | 2002 | 12435155 |
| experimental fascioliasis in the rat-like hamster, tscherskia triton, and other rodent hosts. | experimental infection with fasciola hepatica and parthenogenetic fasciola sp. in laboratory animals have been conducted in rats and rabbits. inoculation of less than 5 metacercariae into rat-like hamsters, tscherskia triton, is sufficient to establish fasciola infections. the prepatent period of f. hepatica and the parthenogenetic fasciola sp. in t. triton was shorter than that in rats and rabbits, suggesting that t. triton is a suitable experimental model for these flukes. in contrast, f. giga ... | 2003 | 12798926 |
| molecular epidemiological study for tick-borne disease (ehrlichia and anaplasma spp.) surveillance at selected u.s. military training sites/installations in korea. | vector-borne diseases are a potential public health threat to u.s. forces korea (usfk). ehrlichia and anaplasma spp., transmitted by ticks, are only two of several diseases that may affect military readiness and operations. rodents were collected at selected u.s. military installations and training sites in the republic of korea. dna was extracted from spleen tissues and assayed by pcr methods for ehrlichia and anaplasma species. from rodents and mustelids collected during 1999 and 2000, a total ... | 2003 | 12860612 |
| effects of weasel odor on behavior and physiology of two hamster species. | this study examined the behavioral and physiological effects of long-term exposure to overdose of aversive odor (predator odor) in two species of hamsters. about 0.05 mg of anal gland secretions of siberian weasels (mustela sibirica) was smeared at the oronasal groove of wild male ratlike hamsters (cricetulus triton) (natural prey) and laboratory golden hamsters (mesocricetus auratus) once every day for 4 weeks. after 28 days, the experimental groups of both hamster species displayed higher cort ... | 2003 | 12954393 |
| [use of cricetulus triton for the study of the immunogenic properties of toxoids for wound infections and botulism]. | | 1963 | 14070207 |
| epidemiological studies on host animals of scrub typhus of the autumn-winter type in shandong province, china. | in order to elucidate the host animals of scrub typhus in shandong province, epidemiological studies on host rodents of the autumn-winter type scrub typhus were carried out from 1995 to 2002 at four localities in the shandong province. based upon ecological observations of the composition, seasonal fluctuation of animal hosts, isolation of orientia tsutsugamushi, detection and identification of serotypes of antibodies to o. tsutsugamushi were conducted. two thousand eight hundred and eighty-four ... | 2003 | 15115095 |
| food restriction in pregnant rat-like hamsters (cricetulus triton) affects endocrine, immune function and odor attractiveness of male offspring. | we studied the effect of intrauterine food restriction (fr) on the immune function, endocrine status and attractiveness of scents of male rat-like hamsters, cricetulus triton. work was conducted on field-caught parents from the north china plain and their laboratory-born progeny. restricted pregnant dams were fed 70% of the mean daily intake of hamsters with free access to food. fr caused a marked and protracted weight reduction of the body, adrenal, testes and epididymides in males. during the ... | 2004 | 15276810 |
| species differences among various rodents in the conversion of 7alpha-hydroxycholesterol in liver microsomes. | our previous study demonstrated that there are species differences among vertebrates in their conversion of 7alpha-hydroxycholesterol (7hc) to 7-ketocholesterol (7kc). to examine this further, we investigated the differences in the products of 7alpha-hydroxycholesterol in various species of male muroid rodents. adult male syrian hamsters (mesocricetus auratus), dwarf hamsters (phodopus rovolovskii), djungarian hamsters (phodopus sungorus), chinese hamsters (cricetulus griseus), rat-like hamsters ... | 2006 | 16455124 |
| food restriction affects reproduction and survival of f1 and f2 offspring of rat-like hamster (cricetulus triton). | food restriction in parent may have long-term consequence on the reproductive capabilities of the offspring, and these consequences may, in turn, play an important role in population regulation. in this paper, we systematically examined the effect of maternal food restriction on reproduction and survival of maternal individuals, and f1 and f2 offspring of rat-like hamsters (cricetulus triton). food restriction to 75% of that eaten by ad libitum-fed hamsters (75% fr) did not affect the reproducti ... | 2006 | 16458335 |
| seasonal changes in chronic social interactions and physiological states in female rat-like hamsters (tscheskia triton). | we examined the behavioral characteristics and physiological states related to solitary lifestyle and dominant-subordinate relationships in female rat-like hamsters (tscheskia triton), formerly known as cricetulus triton. wild adult hamsters were captured and caged singly in the laboratory during the non-breeding and breeding seasons. the experimental hamsters were subjected to 5 min staged dyadic encounters every day for 28 consecutive days by pairing two unfamiliar and weight matched females i ... | 2006 | 16914175 |
| effect of maternal food restriction during gestation on early development of f1 and f2 offspring in the rat-like hamster (cricetulus triton). | maternal food restriction (fr) may have strong and long-term effects on body weight, brain and behavior development of offspring. however, it is still not well understood whether such an effect is carried over to the next generation. our objective was to examine the differences of maternal behavior, body growth, cranial growth and early development of f1 and f2 offspring of rat-like hamsters between a fr group and a control group. results show that fr has a significant influence on maternal gath ... | 2007 | 17399970 |
| plagiorchis muris infection in apodemus agrarius from northern gyeonggi-do (province) near the demilitarized zone. | the small intestines of 6 species of rodents and 1 species of insectivore were examined seasonally for plagiorchis muris infection in 3 different localities in northern gyeonggi-do (province), near the demilitarized zone (dmz). a total of 1,496 animals, including 1,366 apodemus agrarius, 54 crocidura lasiura (insectivore), 32 mus musculus, 28 micronytus fortis, 9 eothenomys regulus, 6 micronys minutus, and 3 cricetulus triton, were live-trapped at yeoncheon-gun (n = 351), paju-shi (804) and poch ... | 2007 | 17570981 |
| apodemus agrarius as a new definitive host for neodiplostomum seoulense. | a total of 1,496 rodents and insectivores were live-trapped at yeoncheon-gun (n = 351), paju-shi (804), and pocheon-gun (343), gyeonggi-do (province), and examined for intestinal helminths, including neodiplostomum seoulense, seasonally from december 2004 to september 2005. six species of rodents, including apodemus agrarius (1,366), mus musculus (32), micronytus fortis (28), eothenomys regulus (9), micronys minutus (6), and cricetulus triton (3), and 1 species of insectivores crocidura lasiura ... | 2007 | 17570982 |
| microbial pathogens in ticks, rodents and a shrew in northern gyeonggi-do near the dmz, korea. | a total of 1,618 ticks [420 individual (adults) and pooled (larvae and nymphs) samples], 369 rodents (apodemus agrarius, rattus norvegicus, tscherskia triton, mus musculus, and myodes regulus), and 34 shrews (crocidura lasiura) that were collected in northern gyeonggi-do near the demilitarized zone (dmz) of korea during 2004-2005, were assayed by pcr for selected zoonotic pathogens. from a total of 420 individual and pooled tick dna samples, anaplasma (a.) phagocytophilum (16), a. platys (16), e ... | 2008 | 18716449 |
| ecological surveillance of small mammals at firing points 10 and 60, gyeonggi province, republic of korea, 2001-2005. | throughout korea, small mammals are hosts to a number of disease-causing agents that pose a health threat to u.s. and korean military forces while they conduct field-training exercises. a seasonal rodent-borne disease surveillance program was established at two firing points (fp), fp-10, and fp-60, and conducted over five years from 2001 through 2005 in response to hantavirus cases among u.s. soldiers. the ecology of these sites consisted primarily of tall grasses associated with semi-permanent ... | 2008 | 19263858 |
| echinostome infections in the striped-field mouse, apodemus agrarius, and the ussuri white-toothed shrew, crocidura lasiura, caught near the demilitarized zone, gyeonggi-do (province), republic of korea. | a total of 1,498 small mammals (rodents and insectivores), including apodemus agrarius (n = 1,366), crocidura lasiura (54), mus musculus (32), micronytus fortis (28), eothenomys regulus (9), micronys minutes (6), and cricetulus triton (3), were live-trapped in gyeonggi-do (province) (paju-si, pocheon-gun, and yeoncheon-gun) near the demilitarized zone (dmz) from december 2004 to september 2005. a. agrarius was found to be infected with 3 species of echinostomes (echinostoma hortense, echinostoma ... | 2009 | 19724709 |
| detection of rickettsia typhi and seasonal prevalence of fleas collected from small mammals in the republic of korea. | fleas were collected from live-captured small mammals to identify potential flea-borne pathogens, seasonal prevalence of flea species, and host preference as part of the us military rodent-borne diseases surveillance program conducted at one us military installation and 10 military training sites, northern gyeonggi province, republic of korea. during 2003-04, 948 fleas (563 females and 385 males) were recovered from 2,742 small mammals (seven rodent and one insectivore species). apodemus agrariu ... | 2010 | 20090029 |
| serosurveillance of scrub typhus in small mammals collected from military training sites near the dmz, northern gyeonggi-do, korea, and analysis of the relative abundance of chiggers from mammals examined. | comprehensive quarterly serosurveillance on scrub typhus in small mammals collected from military training sites located near the demilitarized zone (dmz), northern gyeonggi-do (province), rok was conducted to determine the potential rodent-borne and associated ectoparasite disease risks to military personnel. a total of 1,196 rodents and insectivores representing 8 species, apodemus agrarius (87.3%, n = 1,044), mus musculus (5.4%, n = 65), crocidura lasiura (3.3%, n = 40), microtus fortis (2.6% ... | 2010 | 20877503 |
| detection of rickettsia felis and rickettsia typhi and seasonal prevalence of fleas collected from small mammals at gyeonggi province in the republic of korea. | abstract fleas were collected from live-captured small mammals to identify flea-borne pathogens, host associations, and seasonal prevalence of flea species, as part of the 65th medical brigade rodent-borne disease surveillance program at 20 military installations and training sites, gyeonggi province, republic of korea, 2005-2007. a total of 1251 fleas were recovered from 2833 small mammals. apodemus agrarius, the striped field mouse, accounted for 93.1% (2,637/2,833) of all small mammals captur ... | 2011 | 21612536 |
| intestinal nematodes from small mammals captured near the demilitarized zone, gyeonggi province, republic of korea. | a total of 1,708 small mammals (1,617 rodents and 91 soricomorphs), including apodemus agrarius (n = 1,400), microtus fortis (167), crocidura lasiura (91), mus musculus (32), myodes (= eothenomys) regulus (9), micromys minutus (6), and tscherskia (= cricetulus) triton (3), were live-trapped at us/republic of korea (rok) military training sites near the demilitarized zone (dmz) of paju, pocheon, and yeoncheon, gyeonggi province from december 2004 to december 2009. small mammals were examined for ... | 2015 | 25748722 |
| mitochondrial genome of cricetulus migratorius (rodentia: cricetidae): insights into the characteristics of the mitochondrial genome and the phylogenetic relationships of cricetulus species. | cricetulus migratorius is widely distributed in the northwestern arid regions of china. here, the complete mitochondrial genome (mitogenome) of c. migratorius is reported, to our knowledge, for the first time. it was found to be 16,246bp in length, including 13 protein-coding genes (pcgs), 2 rrna genes, 22 trna genes, and one control region, and showed characteristics typical of the vertebrate mitogenome. comparative analyses of mitogenomes of cricetulus species showed that hamster mitogenomes h ... | 2016 | 27717890 |
| chigger mite (acari: trombiculidae) survey of rodents in shandong province, northern china. | chigger mites are parasites of rodents and other vertebrates, invertebrates, and other arthropods, and are the only vectors of scrub typhus, in addition to other zoonoses. therefore, investigating their distribution, diversity, and seasonal abundance is important for public health. rodent surveillance was conducted at 6 districts in shandong province, northern china (114-112°e, 34-38°n), from january to december 2011. overall, 225/286 (78.7%) rodents captured were infested with chigger mites. a ... | 2017 | 29103271 |
| past climate change and recent anthropogenic activities affect genetic structure and population demography of the greater long-tailed hamster in northern china. | the genetic diversity and the spatial structure of a species are likely consequences of both past and recent evolutionary processes, but relevant studies are still rare in east asia where the pleistocene climate has unique influences. in this study, we examined the impact of past climate change and recent anthropogenic activities on the genetic structure and population size of the greater long-tailed hamster (tscherskia triton), an agricultural rodent pest species in northern china. dna sequence ... | 2015 | 26202859 |
| geographic distance affects dispersal of the patchy distributed greater long-tailed hamster (tscherskia triton). | dispersal is a fundamental process in ecology influencing the genetic structure and the viability of populations. understanding how variable factors influence the dispersal of the population is becoming an important question in animal ecology. to date, geographic distance and geographic barriers are often considered as main factors impacting dispersal, but their effects are variable depending on different conditions. in general, geographic barriers affect more significantly than geographic dista ... | 2014 | 24911266 |
| social defeat and subsequent isolation housing affect behavior as well as cell proliferation and cell survival in the brains of male greater long-tailed hamsters. | aversive social interactions, such as social defeat, can alter a variety of behavioral and cognitive functions. in the present study, we examined the effects of social defeat and the subsequent housing on behavior as well as cell proliferation and cell survival in the solitary, male greater long-tailed hamster (tscheskia triton). we found that three days of agonistic interactions reliably led to a subordinate-dominant relationship between pairs of male hamsters. however, such behavioral interact ... | 2014 | 24508746 |
| variation of genetic diversity in a rapidly expanding population of the greater long-tailed hamster (tscherskia triton) as revealed by microsatellites. | genetic diversity is essential for persistence of animal populations over both the short- and long-term. previous studies suggest that genetic diversity may decrease with population decline due to genetic drift or inbreeding of small populations. for oscillating populations, there are some studies on the relationship between population density and genetic diversity, but these studies were based on short-term observation or in low-density phases. evidence from rapidly expanding populations is lac ... | 2013 | 23349815 |
| [the polymorphism and distribution of b chromosomes in germline and somatic cells of tscherskia triton de winton (rodentia, cricetinae)]. | the karyotypes of 13 greater long-tailed hamsters (tscherskia triton de winton, 1899) (eight males and five females) from primorskii krai (russia), including six males and one female from the vicinity of the city of ussuriisk and two males and four females from the vicinity of the village of pogranichnyi, have been studied. the karyotypes of five males (four from the vicinity of ussuriisk and one from the vicinity of pogranichnyi) have been found to contain one or two small acrocentric b chromos ... | 2012 | 22830259 |
| oxytocin and vasopressin immunoreactive staining in the brains of brandt's voles (lasiopodomys brandtii) and greater long-tailed hamsters (tscherskia triton). | immunoreactive (ir) staining of the neuropeptides oxytocin (ot) and vasopressin (avp) was performed in the brains of brandt's voles (lasiopodomys brandtii) and greater long-tailed hamsters (tscherskia triton)-two species that differ remarkably in social behaviors. social brandt's voles had higher densities of ot-ir cells in the medial preoptic area (mpoa) and medial amygdala (mea) as well as higher densities of avp-ir cells in the lateral hypothalamus (lh) compared to solitary greater long-taile ... | 2010 | 20573572 |
| agonistic encounters and brain activation in dominant and subordinate male greater long-tailed hamsters. | during an agonistic encounter test, dominant male greater long-tailed hamsters (tscheskia triton) initiated attacks sooner and displayed higher levels of aggression and flank marking behavior than their subordinate counterparts. accordingly, subordinate males exhibited more defensive behavior than dominant ones. specific patterns of neuronal activation, measured by fos-immunoreactive staining (fos-ir), were found in the hamster brain following agonistic interactions. increased fos-ir was observe ... | 2010 | 20471386 |
| fecal hormone variation during prolonged social interaction in male tscheskia triton. | agonistic behavior is crucial for conspecific members to maintain a social hierarchy, optimum population density, and high fitness. it is known that agonistic behavior and social ranking often interact with hormones such as testosterone (t) and glucocorticoids (gcs). the challenge hypothesis states that t levels in males are promoted by the agonistic behaviors of other males and has been widely testified in many taxa of vertebrates, even in humans, but seldom attempted in rodents. here, we exami ... | 2009 | 19296908 |
| genetic diversity decreases as population density declines: implications of temporal variation in mitochondrial haplotype frequencies in a natural population of tscherskia triton. | although the spatial genetic differentiation that occurs in animal populations has been extensively studied, information on temporal variations in genetic structure and diversity is still lacking, especially for animals with oscillating populations. in the present study, we used the mtdna d-loop sequence to assess the temporal genetic variation in samples from six successive years for the greater long-tailed hamster, tscherskia triton. sampling was carried out between 1998 and 2003 in cropland o ... | 2006 | 21396012 |
| effects of photoperiod and ambient temperature on the gonadotropin-releasing hormone neuronal system in the gray hamster, tscherskia triton. | in seasonal breeders like the hamster, gonadal function depends on the photoperiod. the present study examined the effects of different photoperiods and ambient temperatures on the gonadotropin-releasing hormone (gnrh) neuronal system in male gray hamsters, tscherskia triton. hamsters were kept from birth under a long-day (ld: 16 h light and 8 h dark) photoperiod and at 23 degrees c until the experiment began. the animals were then kept for 30 days under different photoperiods and ambient temper ... | 2000 | 11124585 |
| two novel cricetine mitogenomes: insight into the mitogenomic characteristics and phylogeny in cricetinae (rodentia: cricetidae). | both cricetus cricetus and phodopus sungorus mitochondrial genomes (mitogenomes) were sequenced and elaborated for the first time in the present study. their mitogenomes contained 37 genes and showed typical characteristics of the vertebrate mitogenome. comparative analysis of 10 cricetine mitogenomes indicated that they shared similar characteristics with those of other cricetines in terms of genes arrangement, nucleotide composition, codon usage, trna structure, nucleotide skew and the origin ... | 2020 | 31669701 |
| dominant and subordinate relationship formed by repeated social encounters alters gut microbiota in greater long-tailed hamsters. | social stress can dramatically influence the health of animals via communication between gut microbiota and the hpa system. however, this effect has been rarely investigated among different social ranked animals after chronic repeated social encounters. in this study, we evaluated changes and differences in microbiota among control, dominant, and subordinate male greater long-tailed hamsters (tscherskia triton) over 28 successive days of repeated social encounter. our results indicated that as c ... | 2020 | 31807860 |
| bartonella species detected in rodents from eastern china. | bartonella are vector borne gram-negative facultative intracellular bacteria. bartonella species are associated with rodents and their flea parasites worldwide. the genetic variation and distribution of bartonella species in rodents are not clear in china. we investigated the presence and genetic diversity of bartonella species in rodents from eastern china. we captured rodents from 2015 to 2016 in jiaonan county, shandong province, and detected bartonella species in the spleen of rodents by pcr ... | 2019 | 31355717 |
| context-dependent responses of food-hoarding to competitors in apodemus peninsulae: implications for coexistence among asymmetrical species. | superior species may have distinct advantages over subordinates within asymmetrical interactions among sympatric animals. however, exactly how the subordinate species coexists with superior species is unknown. in the forests west of beijing city, intense asymmetrical interactions of food competition exist among granivorous rodents (e.g. apodemus peninsulae, niviventer confucianus, sciurotamias davidianus and tscherskia triton) that have broadly overlapping habitats and diets but have varied body ... | 2020 | 31773891 |