[feeding of imago haemaphysalis japonica douglasi nutt. et warb. and haemaphysalis concinna koch under laboratory conditions]. 1977562974
[population density of ixodes persulcatus ticks (ixodidae) in the western sikhote-alin].the paper presents data on the population density of active ticks in different landscape zones of west sykhote-alyn as well as the material on the absolute abundance of ticks in four experimental 400 m2 areas. the abundance of active ixodes persulcatus and haemaphysalis japonica on vegetation at the peak of their activity was found to amount to half of all hibernated adult ticks.1978643311
[a study of the ability of the ticks haemaphysalis japonica douglasi nutt. et w. and h. neumanni d. to act as rickettsia carriers in experimental conditions]. 19675623101
[ecology of the ixodid tick, haemaphysalis japonica, in the maritime territory]. 19817207397
survey of ixodid tick species on domestic cats in japan.various species of ixodid ticks, attached to domestic cats in japan, were identified in spring (april to june) and autumn (september to november). in the spring, a total of 282 ticks, including 61 larvae, 70 nymphs, 127 females and 24 males were collected from 126 cats. of these, 264 were identified up to the species level. in the spring, haemaphysalis longicornis was the most frequently (39.7%, 50/126) found tick species on feline hosts, followed by ixodes ovatus (35.0%, 44/126), ixodes nippone ...200312531297
[on spontaneous infection of haemaphysalis japonica douglasi nutt. and warb. ticks by d. sibiricus rickettsia in the primorsk region]. 196314151783
tick-borne rickettsioses around the world: emerging diseases challenging old concepts.during most of the 20th century, the epidemiology of tick-borne rickettsioses could be summarized as the occurrence of a single pathogenic rickettsia on each continent. an element of this paradigm suggested that the many other characterized and noncharacterized rickettsiae isolated from ticks were not pathogenic to humans. in this context, it was considered that relatively few tick-borne rickettsiae caused human disease. this concept was modified extensively from 1984 through 2005 by the identif ...200516223955
[investigation on the vectors of borrella burgdorferi and on the identification of the isolates along china-russia border in eastern heilongjiang province, china].to explore the fact that the east border of heilongjiang had been a lyme disease natural focus,we investigated the species and distribution of ticks and isolated bacteria from ticks and identified genomic species of borrelia burdorferi sensu lato. this study provided evidence for prevention and control of lyme disease.200717575937
hepatozoon ursi n. sp. (apicomplexa: hepatozoidae) in japanese black bear (ursus thibetanus japonicus).morphological and genetic features of a new hepatozoon species, hepatozoon ursi n. sp., in japanese black bear (ursus thibetanus japonicus) were studied. schizogonic developmental stages were observed in the lungs of japanese black bears. the schizonts were sub-spherical in shape and 45.7+/-4.6 x 42.7+/-4.5 microm in size. each mature schizont contained approximately 80-130 merozoites and 0-5 residual bodies. the merozoites were 7.0+/-0.7 x 1.8+/-0.3 microm in size. intraleukocytic gametocytes w ...200818329332
[detection of babesia spp. dna in small mammals and ixodic ticks on the territory of north ural, west siberia and far east of russia].totally, 932 small mammals and 458 questing adult ixodes persulcatus from sverdlovsk and novosibirsk regions and khabarovsk territory, as well as 128 haemaphysalis japonica, 34 h. concinna and 29 dermacentor silvarum from khabarovsk territory were examined for the presence of babesia by nested pcr based on the 18s rrna gene. babesia microti dna was found in samples of small mammals from all the studied regions--in 36.2% of samples from sverdlovsk region, 5.3% of samples from novosibirsk region, ...201020886686
ticks collected from selected mammalian hosts surveyed in the republic of korea during 2008-2009.a tick survey was conducted to determine the relative abundance and distribution of ticks associated with selected mammals in the republic of korea (rok) during 2008-2009. a total of 918 ticks were collected from 76 mammals (6 families, 9 species) captured at 6 provinces and 3 metropolitan cities in rok. haemaphysalis longicornis (54.4%) was the most frequently collected tick, followed by haemaphysalis flava (28.5%), ixodes nipponensis (7.6%), ixodes pomerantzevi (4.8%), ixodes persulcatus (4.6% ...201122072840
exploratory study on pathogenesis of far-eastern spotted fever.far-eastern spotted fever is an emerging disease caused by rickettsia heilongjiangensis, a tick-borne obligate intracellular bacterium. in this study, r. heilongjiangensis was used to infect balb/c mice by inoculation of retro-orbital venous plexus to imitate a blood infection caused by tick biting. we found that r. heilongjiangensis rapidly entered the circulation for systemic dissemination and the pathogen existed in liver, spleen, lungs, and brain of the mice at least 9 days post-infection (p ...201121896812
prevalence of tick-borne encephalitis virus in ixodid ticks collected from the republic of korea during this study, we demonstrated that tbev-infected ticks have been distributed in the rok, combined with our previous results. these results suggest that tbev may exist in the rok, and h. longicornis, h. flava, and i. nipponensis may be potential vectors of tbev. in addition, these results emphasize the need for further epidemiological research of tbev.201224159517
autochthonous lyme borreliosis in humans and ticks in korea.this study aimed at finding epidemiological and clinical features of autochthonous lyme borreliosis in humans through epidemiological investigations and identifying its vectors and pathogens through analysis of ticks.201324159530
emerging tick-borne infections in mainland china: an increasing public health threat.since the beginning of the 1980s, 33 emerging tick-borne agents have been identified in mainland china, including eight species of spotted fever group rickettsiae, seven species in the family anaplasmataceae, six genospecies in the complex borrelia burgdorferi sensu lato, 11 species of babesia, and the virus causing severe fever with thrombocytopenia syndrome. in this review we have mapped the geographical distributions of human cases of infection. 15 of the 33 emerging tick-borne agents have be ...201526453241
vector potential and population dynamics for amblyomma inornatum.we studied the natural life cycle of amblyomma inornatum and its vector potential in south texas. this tick is distributed throughout south texas and most of central america. a. inornatum represented 1.91% of the ticks collected by carbon dioxide traps during a study of free-living ticks in the tamaulipan biotic province in south texas. the life cycle of a. inornatum in south texas showed a clear seasonal pattern consistent with one generation per year. nymphs emerged in the spring with a peak i ...201525881916
seroprevalence of bovine theileriosis in northern china.bovine theileriosis is a common disease transmitted by ticks, and can cause loss of beef and dairy cattle worldwide. here, an indirect enzyme-linked immunosorbent assay (ielisa) based on theileria luwenshuni surface protein (tlsp) was developed and used to carry out a seroepidemiological survey of bovine theileriosis in northern china.201627863521
update on tick-borne rickettsioses around the world: a geographic approach.tick-borne rickettsioses are caused by obligate intracellular bacteria belonging to the spotted fever group of the genus rickettsia. these zoonoses are among the oldest known vector-borne diseases. however, in the past 25 years, the scope and importance of the recognized tick-associated rickettsial pathogens have increased dramatically, making this complex of diseases an ideal paradigm for the understanding of emerging and reemerging infections. several species of tick-borne rickettsiae that wer ...024092850
ticks collected from wild and domestic animals and natural habitats in the republic of korea.ticks were collected from 35 animals from 5 provinces and 3 metropolitan cities during 2012. ticks also were collected by tick drag from 4 sites in gyeonggi-do (2) and jeollabuk-do (2) provinces. a total of 612 ticks belonging to 6 species and 3 genera were collected from mammals and a bird (n=573) and by tick drag (n=39). haemaphyalis longicornis (n=434) was the most commonly collected tick, followed by h. flava (158), ixodes nipponensis (11), amblyomma testudinarium (7), h. japonica (1), and h ...201425031468
severe fever with thrombocytopenia syndrome virus in ticks collected from humans, south korea, 2013.we investigated the infection rate for severe fever with thrombocytopenia syndrome virus (sftsv) among ticks collected from humans during may-october 2013 in south korea. haemaphysalis longicornis ticks have been considered the sftsv vector. however, we detected the virus in h. longicornis, amblyomma testudinarium, and ixodes nipponensis ticks, indicating additional potential sftsv vectors.025061851
infective larvae of cercopithifilaria spp. (nematoda: onchocercidae) from hard ticks (ixodidae) recovered from the japanese serow (bovidae).hard ticks taken from the japanese serow, capricornis crispus, in yamagata prefecture, honshu, harboured infective larvae of onchocercid filariae after incubation from the 22nd to the 158th day. haemaphysalis flava and h. japonica contained one to eight filarial larvae; females, males and a nymph of the ticks were infected. the 44 infective larvae recovered were 612-1,370 μm long, and 11 of them, 930-1,340 μm long, were studied in detail. the larvae possessed the morphologic characteristics of t ...201323340227
[genetic variability of anaplasmataceae bacteria determined in haemaphysalis spp. and dermacentor sp. ticks in the territory of the russian far east].totally 484 haemaphysalis japonica, 359 haemaphysalis concinna and 221 dermacentor silvarumn collected in amur region and khabarovsk territory of the russian far east were examined on the presence of anaplasmataceae bacteria using nested pcr. all positive samples were characterized by analysis of the 16s rrna gene and/or groesl operone nucleotide sequences. forty nine h. japonica and three h. concinna were shown to contain dna of two new ehrlichia genetic variants. these genetic variants on the ...201324003508
genetic variability of babesia parasites in haemaphysalis spp. and ixodes persulcatus ticks in the baikal region and far east of study babesia diversity in ixodid ticks in russia, ixodes persulcatus, haemaphysalis japonica, haemaphysalisconcinna, dermacentor silvarum, and dermacentor nuttalli ticks collected in the far east and baikal region were assayed for the presence of babesia spp. using nested pcr. in total, babesia dna was detected in 30 of the 1125 (2.7%) i. persulcatus, 17 of the 573 (3.0%) h. concinna, and 12 of the 543 (2.2%) h. japonica but was undetectable in any of the 294 analyzed dermacentor spp. partia ...201425460820
investigation of borrelia spp. in ticks (acari: ixodidae) at the border crossings between china and russia in heilongjiang province, investigate the precise species of tick vector and the borrelia spirochete pathogen at the heilongjiang province international border with russia.201222575978
diversity of spotted fever group rickettsia infection in hard ticks from suifenhe, chinese-russian order to investigate the diversity of spotted fever group (sfg) rickettsia infection in hard ticks, ticks were harvested from the forest areas in suifenhe city, along the chinese-russian border and conventional pcr was carried out using universal sfg rickettsia primers targeting glta and ompa genes to screen for their infection with sfg rickettsia organisms. results showed that of the 215 ticks belonging to ixodes persulcatus, haemaphysalis concinna and haemaphysalis japonica warburton, 1908 ...201626976703
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