Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
|---|
| [experimental evaluation of the effectiveness of dilor, etafos and 3 ddt analogs as agents for eradicating the taiga tick ixodes persulcatus p. sch]. | 1982 | 7177053 | |
| [redescription of ixodiphagus hirtus (hymenoptera, encyrtidae), a parasite of the taiga tick ixodes persulcatus in the far east of the ussr]. | 1982 | 7155628 | |
| [abundance levels of populations of the virus carriers and vectors in a focus of tick-borne encephalitis]. | in 10 altitude-belt complexes of dzhoysky ridge (west sajans) during the summer period of 14-17 years the abundance of small mammals and imago of the taiga tick and the abundance of engorged larvae and nymphs of i. persulcatus was studied. the obtained results have shown that fluctuations in abundance of mammals and imago of ticks are not, as a rule, beyond the limits of a range of critical levels of abundance, which is defined as ee = 15.15. fluctuations in the abundance of nymphs can cover two ... | 1982 | 7145467 |
| [absolute count of hungry adult ixodes persulcatus ticks (ixodidae) by the sample area method]. | the paper presents results of approbation of the use of experimental areas (100 m2 in size) for characteristics of the populational density of adult hungry ixodes persulcatus. data of a single catch (during the seasonal peak of abundance) of the ticks in these areas are used. the obtained results are suitable for characteristics of the abundance and spread of ticks inside the population. correlations between indices of a relative and absolute estimation are given. it was concluded that the numbe ... | 1982 | 7099707 |
| [differences between murine rodent species as food hosts for ixodid tick larvae (ixodidae)]. | tests on the feeding of larvae of ixodes persulcatus and i. ricinus on five species of muridae have shown that forest and common voles have congenital protective reactions limiting the number of successfully fed parasites. such congenital resistance is practically absent in common field mice and does not arise during the following parasitism of ixodid larvae. the congenital resistance is absent from steppe lemmings too but protective reactions limiting the number of successfully fed larvae arise ... | 1981 | 7027147 |
| [experimental characteristics of the taiga tick (ixodes persulcatus, schulze 1930) as a vector of the tick-borne encephalitis virus]. | 1981 | 7010108 | |
| [experimental study of the effect of taiga tick larvae on murine rodents]. | 1980 | 6993906 | |
| [duration of the active life of ixodes persulcatus imagoes of different generations and the seasonal changes in their population makeup]. | 1983 | 6888329 | |
| [sexual transmission of the tick-borne encephalitis virus in ixodid ticks (ixodidae)]. | sexual transmission of tick-borne encephalitis virus from infected ixodid males to noninfected females is shown: in ixodes persulcatus in 50% (6 of 12) and in hyalomma anatolicum in 6.2% (1 of 16). the sexual transmission of tick-borne encephalitis virus is shown to provide a transmissible transfer of the virus into eggs in ixodid ticks. electron microscope studies of the sexual system of ixodid males infected with the virus have revealed numerous morphologically mature virus particles in lumens ... | 1983 | 6877862 |
| [tick-borne encephalitis viral titers of engorged adult ixodes persulcatus ticks]. | the results of titration of adult virus infected ticks of ixodes persulcatus are given. the ticks were collected in various natural nidi of tick-borne encephalitis and individually fed on laboratory animals. the results of titration of ticks of the same species primarily infected on laboratory animals during virusemia are given as well. changes of the virus titer in engorged ticks were observed till the egg production. a role of the presence of virus in engorged ticks for the process of the agen ... | 1984 | 6728510 |
| [viral titers in ixodes persulcatus ticks from various parts of a tick-borne encephalitis infected area]. | 1984 | 6717384 | |
| consistent patterns in the contact of domestic animals with tick-borne encephalitis virus in the eastern part of the russian plain. | hemagglutination inhibition test (hit), neutralization test (nt) and complement fixation test (cft) were used to serologically examine goats and cows in the southern area of the kirov region and in the udmurt assr. a total of 1641 sera of goats and 1414 sera of cows were examined for the presence on antibodies against tick-borne encephalitis virus. the tests showed a relatively intensive contact of goats and cows with tbe virus in the forests of the eastern part of the russian plain: hit was pos ... | 1984 | 6715878 |
| biological properties of strains of tick-borne encephalitis virus isolated in the natural foci of the eastern part of the russian plain. | strains of tick-borne encephalitis virus isolated in the natural foci of infection in the eastern part of the russian plain (the kirov region) were examined for their biological properties. the strains examined were 69 strains isolated from ticks ixodes persulcatus, 62 strains obtained from patients with the clinically manifest form of tick-borne encephalitis and 56 strains isolated from the blood of patients with the inapparent form of infection. comparative studies on laboratory animals (albin ... | 1984 | 6715874 |
| tick bite: two cases studied by scanning electron microscopy. | the attachment of ticks to human skin has been studied by scanning electron microscopy. intact specimens of ixodes ovatus and ixodes persulcatus were examined, and we also studied the skin of two patients who had been bitten by these two species. in the first case, the remains of the tick were visible and a homogeneous cement-like substance was observed on the dorsal hypostome and in the dermis, suggesting that the tick attaches itself to the host skin by a secretion. in the second case, the api ... | 1984 | 6696839 |
| seasonal activity of adult ticks ixodes persulcatus p. sch. in the eastern part of the russian plain. | in the tbe focal region in the eastern part of the russian plain the beginning of the adult i. persulcatus activity is usually registered in the last ten days of april, when the upper soil layers get warmed thoroughly up to +5 or 10 degrees c. the period of activity is dissimilar in different years, varying between 65 and 95 days. the duration of the activity period is associated with the tick number and weather of the season. the most favourable years for the activity of adult i. persulcatus ar ... | 1984 | 6541178 |
| [dependence of larval and nymphal feeding of the taiga tick ixodes persulcatus p. sch. on the number of small mammals in the forests of the western sayan]. | 1984 | 6482836 | |
| [distribution and biological characteristics of ixodes persulcatus (ixodidae) ticks in the health resort zone of leningrad]. | the occurrence of an isolated population of i. persulcatus in the health resort zone of leningrad is due to a character of vegetation, soils, relief and availability of such food sources as birds, hares and elks. the seasonal dynamics of ticks abundance depends very little on temperature but depends on the amount of precipitations and on the number of days with precipitations; long fluctuations in the ticks abundance are stimulated, in general, by temperature. annual mechanical collections of ti ... | 1981 | 6459559 |
| [tick-borne encephalitis in europe (author's transl)]. | tick-borne encephalitis is the major european arbovirosis. it is observed in soviet union, central and western europe and scandinavian countries. in france, natural foci have been detected in alsace (more specialy in illkirch forest, near strasbourg). in the united kingdom exists a sheep encephalomyelitis (loupingill) caused by an arbovirus not much different from the tick-born encephalitis virus. the tick-born encephalitis virus is a flavivirus transmitted by tick bites. tick is also a virus re ... | 1980 | 6255281 |
| [sites of sucking attachment of the taiga tick (ixodes persulcatus, ixodidae) in children and adults]. | in children and adults ixodes persulcatus adheres mostly often to axillary space, neck, anterior surface of the trunk and comparatively seldom to extremities in distal direction. rather often in children the tick adheres to the head; with age the strength of adhering to the axillary space increases. the topography of adherings of i. persulcatus is closely associated with the character of activities and clothes of the population, ecological characters of the tick, size, anatomical, hystological a ... | 1984 | 6238270 |
| [relation between the population count of taiga ticks (ixodes persulcatus p. sch.) and their virophoricity in the tick-borne encephalitis foci of novgorod province]. | 1984 | 6232448 | |
| [development of the ixodes ticks (ixodidae) in the reclaimed parts of forest in the novgorod region]. | data of observations on the development of ixodes persulcatus, i. ricinus and dermocentor pictus in drained parts of small-leaved and coniferous forests with different types of soils are given. it has been established that microclimatic changes take place in sites of ticks development. the draining favours the improvement of ecological conditions of the development of ticks. in drained parts of the forest the survival of preimaginal phases is higher than that in undrained ones. | 1983 | 6221226 |
| the epidemiological significance of ixodes persulcatus p. sch. males in russian spring-summer tick-borne encephalitis. | 1966 | 5950909 | |
| [isolation of tick-borne encephalitis strains from ixodes persulcatus ticks collected during the 1964 epidemic season]. | 1965 | 5896231 | |
| [production trials of some repellents against gnats and ixodes persulcatus ticks. ii]. | 1965 | 5877776 | |
| [on the ecology of the ixodes persulcatus ticks. the incidence of ticks and their food providers in areas of entire wood-cutting in fir-abies forests]. | 1965 | 5869236 | |
| [consumption of nutritional reserves by empty females of ixodes persulcatus p. sch. during the life cycle]. | 1968 | 5715115 | |
| [distribution of ixodes persulcatus ticks and their hosts in overgrowing cleared spaces and in fir-abies forest]. | 1967 | 5629256 | |
| [some data on feeding habits of female ixodes persulcatus in the primorye region]. | 1967 | 5609963 | |
| [infectability of ixodes persulcatus ticks and questions concerning transovarial transmission during dose regulated infection with tick-borne encephalitis virus]. | 1970 | 5518645 | |
| [the distribution of ixodes persulcatus p. sch. ticks on the northern slope of western saian, and the factors determining it. ii. nourishment of the nymphs and larvae of i. persulcatus by small mammals]. | 1970 | 5511251 | |
| [a study of the survival of the virus of omsk hemorrhagic fever in ixodes persulcatus in conditions of their massive infection]. | 1970 | 5469822 | |
| [distribution of ixodes persulcatus p. sch. ticks on the northern slope of the western sayan mountains and factors determining it. i. distribution of adult ixodes persulcatus]. | 1970 | 5469821 | |
| [the reaction of taiga ticks (ixodes persulcatus p. sch) to carbon dioxide and several prospects for its use in field research]. | 1969 | 5400211 | |
| [ixodid ticks of the kemerovo region. ii. seasonal changes in the activity of ixodes persulcatus ticks according to landscape]. | 1969 | 5373448 | |
| the public health importance of tick-borne encephalitis in europe. | after an historical survey establishing the distinction between russian spring-summer encephalitis, a serious disease with a high mortality rate caused by a virus spread by the tick ixodes persulcatus, and the milder central european encephalitis, which is spread by i. ricinus, the public health aspects of the latter disease are discussed. the factors affecting the incidence of the disease-tick population, role of rodents and insectivores, etc.-are considered. only a small proportion of those in ... | 1967 | 5298542 |
| [necessity for prolonged residual action of acaricides for control of ixodes persulcatus]. | 1971 | 5134383 | |
| [supplementary methods of determining the physiological age of ixodid ticks (using ixodes persulcatus p. sch. of western saian as an example])]. | 1971 | 5087690 | |
| [distribution and population density of ixodes persulcatus ticks in sakhalin]. | 1972 | 5042564 | |
| [determination of the physiological age of empty male ixodes persulcatus p. sch. in western sayan]. | 1972 | 5039303 | |
| [sensitivity of ixodes persulcatus schulze ticks to acaricides]. | 1974 | 4842667 | |
| [occurrence of fertilization in hungry female ixodes persulcatus p. sch. in nature]. | 1973 | 4805431 | |
| [species of the group ixodes persulcatus (parasitiformes, ixodidae). vii. paleogenesis of the southern branch of the group ixodes ricinus (l.)]. | 1973 | 4777805 | |
| effect of photoperiod on the ovipositional patterns of haemaphysalis longicornis and ixodes persulcatus (oxopdoidea: ixodidae). | 1973 | 4718533 | |
| [radio-tagging of ticks of the ixodes persulcatus species]. | 1972 | 4666505 | |
| a comparative observation of ixodes persulcatus and ixodes nipponensis through scanning electron microscope. | 1974 | 4466113 | |
| [1st manifestation of activity (activation) of the ticks ixodes persulcatus p. sch. and the length of their life in western saian]. | 1974 | 4462009 | |
| [daily fluctuations in the activity of starving nymphs of ixodes ricinus l. and ixodes persulcatus p. sch. (parasitiformes: ixodiadae)]. | 1974 | 4456171 | |
| [development of a lesion in ixodid ticks (ixodes persulcatus, dermacentor silvarum, haemaphysalis concinna) following the action of ddt]. | 1974 | 4419643 | |
| behaviour of tick-borne encephalitis virus in artificially infected ixodes persulcatus ticks. | 1969 | 4389036 | |
| [physiological age and sensitivity to ddt in a natural population of ixodes persulcatus p, sch. ticks]. | 1974 | 4281905 | |
| [correlation of population indices for the imago of ixodes persulcatus p. sch]. | 1974 | 4278935 | |
| attempt at detailed large-scale mapping of the distribution of the taiga tick]. | 1973 | 4272863 | |
| [epidemic role of ticks of the genera dermacentor and ixodes persulcatus p. sch. in mountain foci of tick-borne encephalitis in relation to activity of their attacks on man]. | 1968 | 4239525 | |
| [phytophenoindicators of periods of activation of ixodes ticks ixodes persulcatus p. sch]. | 1967 | 4238412 | |
| [characteristics of the distribution of ixodes persulcatus in the forest-park area of novosibirsk]. | only one species of ixodid ticks ixodes persulcatus occurs in the forest-park zone. conditions of foliage forests with high grass, where occur hosts of all developmental phases of ticks (elks, hares, rodents, insectivores), are most favourable for i. persulcatus. preimaginal phases of i. persulcatus feed, in general, on dominant species (common shrew, redbacked and narrow-skulled voles, field mouse and northern birch mouse). | 1985 | 4069744 |
| [ultrastructural characteristics of the salivary glands of of the tick ixodes persulcatus. ii. type iii alveoli of the sucking female]. | electron microscope observations were conducted to study changes in the cellular structure of iiid type alveoli of feeding females of i. persulcatus. within the first 1-2 days of feeding granulosecreting glandular cells "d" and "e" get free of secretory inclusions. after that cells "d" degenerate completely and cells "e" undergo morphological transformations and start to fulfil osmoregulatory functions. from the third day of feeding cytoplasm of cells "e" and basal intersticial cells form a comp ... | 1985 | 4069743 |
| [effect of forest fires on the population count and spatial structure of the taiga tick (ixodidae)]. | results of two large-scale surveys of ixodes persulcatus distribution were compared. surveys were conducted in a south taiga forest area in the khabarovsk region two and ten years after a great fire. the direct inhibiting effect of the fire on the population of i. persulcatus was not continuous though apparent. by the moment of pyrogenic small forests formation on slash fires, i.e. during the period not exceeding 2-3 complete developmental cycles of i. persulcatus, the abundance and spatial stru ... | 1985 | 4047717 |
| comparison of the effects of altozar and ddt on females of ixodes persulcatus sch. during and after feeding. | ixodes persulcatus females were treated with altozar and ddt at one of six consecutive time-points during the period beginning with attachment and ending with the commencement of oviposition. the moment of tick attachment (point 1) appeared to be the most sensitive time for the action of altozar; a delay of detachment of some of the engorged females was observed, as well as a decrease in their mean weight and the non-detachment of a considerable number of the females over a long period. similar ... | 1985 | 3870958 |
| a contribution to the methods of estimating absolute tick numbers. | the method of estimating tick numbers in nature by means of experimental sites and by subsequent determination and comparison of classes of occurrence frequency, originally developed for estimation of the numbers of adult ixodes persulcatus in the far east and udmurtia, was successfully applied to imagoes and nymphs of ixodes ricinus occurring in typical central european biotopes. | 1986 | 3804087 |
| [sexual dimorphism of the larvae and nymphs of the taiga tick--ixodes persulcatus]. | manifestations of sexual dimorphism at the preimaginal phase was studied on the laboratory culture of ixodes persulcatus. it has been found out that larger engorged larvae produce, in general, larger nymphs and smaller larvae produce smaller nymphs. the classification of engorged nymphs into large (over 2.9 mm) and small ones (less than 2.9 mm) has made it possible (with 100% probability) to obtain females from the former and males from the latter. differences in linear sizes of scutum, gnathoso ... | 1986 | 3785969 |
| [repellent action of mannich bases on ixodes persulcatus ticks]. | 1987 | 3683298 | |
| lyme disease in japan and its possible incriminated tick vector, ixodes persulcatus. | 1987 | 3655407 | |
| [incidence of copulating pairs of the taiga tick (ixodes persulcatus sch., ixodidae) in nature]. | 1987 | 3626989 | |
| [the tick ixodes persulcatus schulze--a new vector of borrelia burgdorferi]. | 1987 | 3446473 | |
| [evaluation of the results of a one-time count of the nymphs of the taiga tick (ixodes persulcatus p. sch.) on platforms]. | 1988 | 3412246 | |
| [behavioral characteristics of ixodes persulcatus p. sch. ticks infected with the tick-borne encephalitis virus]. | 1988 | 3412245 | |
| [role of the food hosts of adult ixodes persulcatus p. sch. ticks in circulating the tick-borne encephalitis virus]. | 1988 | 3367862 | |
| [transmission of borrelia burgdorferi from nymphs to imago in the tick ixodes persulcatus schulze]. | 1988 | 3229314 | |
| [intrapopulation differences in the infectivity of adult ixodes persulcatus p. sch. with the tick-borne encephalitis virus and an assessment of its total content in ticks]. | at the present stage of investigations on the role of vectors in foci of tick-borne encephalitis and of other transmissible infections it is necessary not only to operate with extensive indices of arthropod infection rate but also to take into account the degree of their infection. it has been demonstrated that adult empty ixodes persulcatus ticks at the time of activation differ significantly by the degree of their infection with tick-borne encephalitis virus. in the khabarovsk territory, annua ... | 1988 | 3195144 |
| clinical manifestations and epidemiological characteristics of lyme disease in hailin county, heilongjiang province, china. | clinical manifestations and epidemiological characteristics of lyme disease in hailin county, heilongjiang province, china have been reported. the clinical picture of erythema chronicum migrans (ecm) is variable. ecm in the form of annular erythematous patch is uncommon. it is an extensive and indurated lesion. in some instances, a vesicle or necrosis appears in the center of the lesion. secondary erythema may present in some patients. the neurologic abnormalities consist of meningitis, facial p ... | 1988 | 3190101 |
| [repeated catching of taiga ticks on their permanent routes]. | to determine seasonal dynamics of abundance of ixodes persulcatus p. sch. by standard methods the ticks collected on flag were marked with a nonrepeated group mark and returned into the registration route. as a result it was established that during the season of ticks' activity in the biotope of shrub meadows 26%, in the biotope of overgrown and trashed glades 14.4% and in the biotope of young aspen forest 13.8% of marked ticks were repeatedly found. of all considered factors affecting repeated ... | 1988 | 3174181 |
| [identification of borrelia isolated in the ussr from ixodes persulcatus schulze ticks]. | the data on the identification of 7 spirochetal isolates from ixodes persulcatus ticks collected in leningrad province and the khabarovsk territory are presented. these isolates, studied with the use of monoclonal antibodies, have been shown to belong to borrelia burgdorferi. | 1988 | 3072807 |
| [the meadow tick dermacentor reticulatus in natural foci of tick-borne encephalitis in udmurtia]. | in southern udmurtia, where occur both dermacentor reticulatus and ixodes persulcatus, in the years of high abundance of small mammals feeding periods of larvae and nymphs of these ticks coincide completely. the duration of simultaneous parasitism of preimago of the above ixodid species on animals is of epidemiological significance as far as within this period the infection of young stages of d. reticulatus with the virus of tick-borne encephalitis occurs. this is confirmed by the isolation of i ... | 1987 | 2963991 |
| [the mountain hare--host of the taiga tick in cisbaikal]. | 1987 | 2960879 | |
| [tick-borne encephalitis in a northern zone of coniferous and broad-leaved forests of a focal region of the amur river basin]. | the geographical variability of the population of tick-borne encephalitis (tbe) virus in the northern part of the zone of combined coniferous and broad-leaved forests was established; this variability was manifested by higher virulence and homogeneity of tbe virus strains, as shown in experiments on white mice receiving the virus extraneurally, in comparison with the southern part of the zone and by higher virus carriership of the ticks ixodes persulcatus. with the epizootic situation remaining ... | 1989 | 2816182 |
| [cyclical changes in the number of ixodes persulcatus in udmurtia]. | analysis involving autocorrelation functions indicated the presence of cyclic components in the changes in i. persulcatus population as well as in certain climatic parameters. three orders of cycles are distinguished, their mean duration comprising 5.5; 11.1 and 22.2 years. high number peaks of i. persulcatus repeated with a mean period of 22 years in 1938-1942, 1959-1964 and 1983-1986, coinciding with the periods of solar energy decline in odd 11-year cycles. according to the established regula ... | 1989 | 2710048 |
| [research on arbovirus infections]. | the author presents the results of researches done at the "stefan s. nicolau" institute of virology in bucharest on the infections induced by arboviruses. the characteristics of three tick encephalitis virus strains (two strains isolated from ixodes ricinus and ixodes persulcatus ticks and one from a patient with encephalitis symptoms) are given. most of the report is devoted to the results of serological survey conducted in a human population, in several domestic birds and mammals from some dis ... | 1989 | 2699965 |
| epizootiology of borrelia in ixodes tick vectors and reservoir hosts. | four north american and two european species of ixodes ticks harbor borreliae. three of the north american species--ixodes dammini, ixodes scapularis, and ixodes pacificus--and two old world species--ixodes ricinus and ixodes persulcatus--feed on a wide range of hosts, including humans; the north american ixodes dentatus has a predilection for cottontail rabbits and rarely parasitizes humans. in lyme disease foci in north america where i. dammini is common, borrelia burgdorferi or similar types ... | 1989 | 2682957 |
| [a count of the vector portion of a population of the causative agent of tick-borne encephalitis connected with the imago of the taiga tick (ixodes persulcatus)]. | the paper presents results of individual virological investigation of about 2 thousand of hungry imagoes of ixodes persulcatus sch., collected for the estimation of the absolute number of ticks at test sites. this approach is shown to be suitable for estimating the ratio between the vectors with various virus doses, the number of vectors, and of the vector share in a virus population in natural tick-born encephalitis foci. | 1989 | 2628708 |
| [investigation of lyme disease in northeast of china]. | in 1987-1988, we conducted investigation of lyme disease in northeast of china. the disease was widespread in the forest areas of heilonjiang and jilin provinces where ixodes persulcatus population thrives. the disease occurred at daqing tree farm where 628 people were inquired and examined among them, 37 cases including 23 cases of ecm, 6 cases of neurological abnormalities, 7 cases of arthritis and 1 case of acrodermatitis chronica atrophicans were confirmed being lyme disease. the sera of pat ... | 1989 | 2611866 |
| [a seroepidemiologic and virological study of the presence of arboviruses in moldavia in 1961-1982]. | in romania, st. drăgănescu et al., miszkolczy et al., based on clinical and epidemiological observations, affirmed the possible presence of "tick-borne encephalitis (tbe)". however, critical retrospective evaluation of certain others' papers published through 1958-1971 reveal some uncommon features. by way of example: a very high incidence of cf- and hi-antibodies in acute and chronic cns illnesses as well as in general population; replication in nucleus and maturation in mitochondria of a strai ... | 1989 | 2561524 |
| [ethology of the taiga tick ixodes persulcatus during its spring activity]. | 10 elementary behavioural acts (eba) were distinguished in the behaviour of the taiga tick during its spring activity. the acts include repeatable and indivisible into more simple forms poses (active and passive waiting poses, resting pose, hiding pose), movements (scanning movement, haller's organ cleaning, contacting movement) and locomotor acts (locomotion to a zone of contact, locomotion to a shelter, locomotion to a source of scent). eba form 3 behavioural programs: entering a zone of conta ... | 1989 | 2524027 |
| [the action of carbon dioxide gas in high concentrations on ixodid ticks]. | the ticks ixodes persulcatus, dermacentor reticulatus, d. marginatus were affected by 50, 70, 80 and 90% co2 at 18 to 26 degrees. the higher the gas concentration and the lower the temperature, the quicker and the deeper was anesthesia. additional tests have shown that response to co2 depends on the water balance level determining the position of atrial valves. the response of some individuals to co2 can change depending on the tick state during the experiment. | 1989 | 2501750 |
| [a trial using taiga tick larvae (ixodes persulcatus) for detecting the acaricidal properties of pesticides]. | the authors have developed a method for the detection and estimation of the pesticide acaricide characteristics, consisting in contact of i. persulcatus hungry preimago and imago with the pesticide in envelopes made of impregnated filter paper. | 1989 | 2483449 |
| [the infectiousness of ixodes persulcatus ticks with the causative agents of lyme disease and tick-borne encephalitis simultaneously]. | by means of individual bacteriological and virological investigations of adult ixodes persulcatus ticks and comparison of obtained results there has been established their simultaneous spontaneous infection with agents of lyme disease and tick-borne encephalitis. a possible frequency of such mixed infection in these vectors is being discussed. | 1990 | 2367143 |
| [factors that determine the possibility of tick-borne encephalitis infection. 3. the probability of human contact with an infected vector in the central taiga forests of khabarovsk territory]. | contacts with ixodes persulcatus sch. and the carriers' infestation with encephalitis virus have been studied for many years in middle taiga forests of the khabarovsk territory. the results of the studies have been compared. the risk of contacts with ticks invaded with varying virus doses has been assessed. it has been established that clinical forms of the disease develop upon bites of highly infected ticks. the number of such ticks in the natural focus is an important index of its potential da ... | 1990 | 2215376 |
| [the lysozyme of ixodes persulcatus ticks]. | using a technique based on specific enzyme sorption by chitin (beta-1-4-n-acetylglucosamine), lysozyme with a molecular mass of 15,000 has been isolated from homogenates of the ix. persulcatus ticks. micrococci and staphylococci proved to be most sensitive to lysozyme from the ix. persulcatus ticks, while e. coli and salmonella were less sensitive. the minimum inhibitory concentration of lysozyme from ix. persulcatus was 2-4 times lower than that of egg lysozyme. lysozyme from the ix. persulcatu ... | 1990 | 2215366 |
| [the isolation of tick-borne encephalitis virus strains and the determination of the scope of immune stratification among the population and the domestic animals on the northern russian plain]. | between 1986 and 1987 the authors conducted virological survey of 689 ixodes persulcatus and 420 mouse-like and insectivorous rodents at the territory of arkhangelsk province and the republic of komi. a total of 8 strains of tick-borne encephalitis virus were isolated. out of them 3 strains were isolated from small mammalians (2 from clethrionomys glareolus, 1 from microtus oeconomus) at the southeastern areas of arkhangelsk province within the middle taiga subarea, 5 strains were isolated from ... | 1990 | 2145500 |
| epidemiological and aetiological evidence for transmission of lyme disease by adult ixodes persulcatus in an endemic area in china. | involvement of adult ixodes persulcatus ticks in the transmission of lyme disease in hailin county, heilongjiang province, china, is reported. in 1986 from april through august adult i. persulcatus was the dominant tick in this endemic area with an infection rate of 43% for the lyme disease spirochaete, borrelia burgdorferi. the incidence of lyme disease cases presenting the symptom of erythema chronicum migrans (ecm) within this area was correlated with the seasonal abundance of adult i. persul ... | 1990 | 2083990 |
| [natural foci of tick-borne encephalitis on the southwestern coast of sakhalin]. | nucleic acids of ixodes persulcatus were studied by molecular hybridization in the natural focus of tick-borne encephalitis in kholmsk district of sakhalin province. the studies have shown wide dissemination of viral rna in the focus. the infectivity of ticks in various sites of habitation varied from 3.5 to 18.5%, their number fluctuating from 0.4 to 300 and more imago per flag-hour. the most active part of the natural focus has been determined using zoological-viral indexes. the viral strain o ... | 1991 | 2067497 |
| investigation of lyme disease in xinjiang. | from april through july 1988, an epidemiological investigation on lyme disease was carried out in nalati xanyuan, xinjiang uygur autonomous region, china. of 150 ixodes persulcatus ticks examined by darkfield microscopy, 42 (28%) were found to have spirochetes. two strains of spirochetes were isolated from i. persulcatus with bsk medium. rabbits inoculated with the spirochetes showed erythema chronicum migrans at the sites of inoculation and the spirochetes were found in the cerebrospinal fluid ... | 1991 | 2065539 |
| detection of antibodies against borrelia burgdorferi in patients with uveitis. | we determined the antibody response against borrelia burgdorferi strains isolated from japanese ixodes ovatus and ixodes persulcatus ticks by enzyme-linked immunosorbent assay and indirect immunofluorescence assay of serum specimens from 127 patients with uveitis. we examined samples of serum from japanese patients with unclassified uveitis, iridocyclitis caused by herpes zoster virus, behçet's disease, vogt-koyanagi-harada syndrome, sarcoidosis, or other conditions (sympathetic ophthalmia, posn ... | 1991 | 1882917 |
| [isolation and characteristics of borrelia burgdorferi from ixodes persulcatus]. | we reported the detailed characteristics of lyme disease spirochetes (borrelia burgdorferi), strain h7, isolated from ixodes persulcatus in heilongjiang. cells of strain h7 were 9.8--26.5 microns long and 0.13--0.35 microns wide. there were 1--11 waves with a wavelength of 1.2--3.0 microns and an amplitude of 0.59--1.13 microns. direction of spires was left. seven flagella were inserted subterminally at each end of the cell and ends were pointed. 31 degrees c was the optimum cultural temperature ... | 1991 | 1866942 |
| [geographic distribution of lyme disease in mudanjiang]. | four forestry plant in mudanjiang with different geographic characteristics were investigated in 1989. 2178 people were inquired and examined. 74 cases including 54 of ecm, 12 of nervous system disorder and 8 of arthritis were confirmed as lyme disease. there were some patients at other places of forest areas of mudanjiang. the prevalence rate of lyme disease ranged from 1% to 4.5% at four plants with higher rate in mountainous area than in hilly land. it is first report that one strain of lyme ... | 1991 | 1863948 |
| [the morphogenic diapause of the taiga tick and the methods for its quantitative assessment in a field experiment]. | methods of quantitative estimation of critical photoperiod and critical date of entering the diapause in ixodids have been worked out. s-shaped dependence of the number of diapausing larvae and nymphs of ixodes persulcatus on their feeding periods has been shown. it has been established that in central udmurtia the average critical date of entering the diapause in 50% of satiated larvae and nymphs falls at the 18th and 29th of june, respectively, with the light day length of 17 hr 10 min and 16 ... | 1991 | 1839697 |
| [the results of laboratory and field trials of the action of ektomin on the taiga tick]. | laboratory and field trials of 60% concentrated ectomin emulsion have been conducted. laboratory experiments on the contact of hungry female individuals of ixodes persulcatus (acarina, ixodidae) with pesticide in the envelopes made of impregnated filter paper have established high imago sensitivity to the preparation--ld50 after a 4-hour contact was 1.10(-6) micrograms/cm2. in field experiments ectomin ensured a 100% effect of hungry ixodes persulcatus elimination 1-2 days later, with the prepar ... | 1991 | 1795676 |
| [the correlation variability of the morphometric traits in 4 species of ixodid tick species (ixodidae)]. | correlation analysis of 10 characters was run in three species of dermacentor, d. nuttalli, d. ushakovae, d. niveus, and in ixodes persulcatus, separately for each phase and sex. correlation coefficients are very low in larvae of all species. in male nymphs correlation coefficients are on the same level in all species while the correlation coefficient level in female nymphs reflects the degree of independence of the development of characters. this defines the degree of manifestation of sexual di ... | 1991 | 1792099 |
| host associations and seasonal abundance of immature ixodes persulcatus (acari: ixodidae) in a lyme-disease-endemic area in china. | ticks of nine small mammal species were studied in an area of endemic lyme disease in hailin county, heilongjiang province, from 1 may to 10 october 1986. the bulk (93%) total small mammal captures were apodemus speciosus (45%), clethrionomys rufocanus (31%), a. agrarius (11%) and eutamias sibiricus; (5%): these host species accounted for 97% of the 162 ticks collected. ixodes persulcatus schulze were most abundant on e. sibiricus (0.64 larvae and 0.08 nymphs/squirrel), and less abundant on a. a ... | 1991 | 1773682 |
| [the modification of a medium for culturing and isolating the causative agent of lyme disease]. | possible use of three types of media (prepared on the basis of 199, rpmi and mem, the rest of receipt being recommended for bsk-ii) for cultivation of the agent of lyme's disease is reviewed. the most satisfactory borrelia burgdorferi growth has been noted on the medium with base 199. using the same medium 5 spirochaete isolates have been obtained from 10 passages of the material from 41 ticks, ixodes persulcatus sch. and i. ricinus l. the results seem promising for further studies on the elabor ... | 1991 | 1770889 |
| [the optimization of a method for assessing the contagiosity and the degree of individual infectiousness of ticks with borrelia]. | the results of dark-ground microscopy of 478 positive preparations from ixodes persulcatus sch. and i. ricinus l., gathered in the active natural foci of lyme's disease in leningrad province, have been analysed. the preparation was prepared by cutting ticks placed into a drop of physiologic saline, with needles. it has been demonstrated that if all the standard conditions are fulfilled (magnification 600, drop volume 0.02 ml, covering glasses, 18 x 18 mm) it is practically impossible to overlook ... | 1991 | 1770879 |