| [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 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 |
| [vergina-like strains of tick-borne encephalitis in russia]. | the greek strain vergina representing an individual third serotype of tick-borne encephalitis (tbe) virus has been compared with 13 tbe strains isolated on the territory of russia and central asia (in kirghizia). a kit of deoxyoligonucleotide probes complementary to genome sites of neudorfle strain of the tbe central european subtype (protein c and prm genes) and of strain sofyin of the eastern subtype (protein e, c, m, prm, ns 1, ns 2b, ns 4b genes) was used in molecular hybridization of nuclei ... | 1995 | 8686262 |
| [ixodes tick-borne borreliosis and tick-borne encephalitis in the udmurt republic: retrospective analysis of their spread]. | the primary clinical-anamnestic and laboratory data on 1,062 cases, registered in udmurtia in 1965-1968 and caused by the bites of taiga ticks (ixodes persulcatus), were retrospectively analyzed. the study revealed that not less than 27% of these cases could be regarded as cases of ixodes tick-borne borreliosis (itbb); formerly they were classified with tick-born encephalitis (tbe) or diseases of unclear etiology. the spread of itbb on the territory of the udmurt republic was shown to be similar ... | 2003 | 12886603 |
| [long-term morbidity and spatial distribution of tick-borne encephalitis and ixodes tick-borne borreliosis in udmurtia]. | the paper considers the trends of morbidity due to tick-borne encephalities (tbe) and lxodes tick-borne borrelioses (ltbb) in udmurtia during 35 years (1965-2000) and evaluates the long-term influence of measures aimed at suppressing natural foci by eliminating the basic vector on this process. for this, data on 1062 cases of fevers occurring after the bite of a tick in udmurtia in 1965-1968, the similar data on 1509 cases in 1983-1987, and the official data on the incidence of these infections ... | 2003 | 14564842 |
| [methods for estimating the demographic structure of the taiga tick (ixodidae) based on results of standard parasitological observations]. | a retrospective estimation of the abundance dynamics of the taiga tick ixodes persulcatus in mixed coniferous and leaf-bearing forests of the udmurtia republic in the period 1957-1986 was carried out. a possibility to estimate the absolute number of all stages of i. persulcatus based on relative indices. females of i. persulcatus lay 20,250 eggs per 1 hectare, and this number of eggs gives birth to 15,000 larvae. from this number, 7870 larvae hibernate and 6550 individuals became fed. the number ... | 2004 | 15656092 |