Publications

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the temperature and humidity preferences of haemaphysalis longicornis, ixodes holocyclus and rhipicephalus sanguineus (ixodidae): studies on engorged larvae. 19817228486
observation on the saliva and salivary gland extract of haemaphysalis spinigera and rhipicephalus sanguineus sanguineus.intracutaneous injection of histamine acid phosphate (hap) and salivary gland extract (sge) of haemaphysalis spinigera and rhipicephalus sanguineus sanguineus into sensitized and nonsensitized rabbits previously injected intravenously with evans blue indicated that the ticks' saliva contained a pharmacodynamic substance in addition to having antigenic properties. a primary skin reaction in nonsensitized rabbits produced by this pharmacodynamic substance within 30 min was amplified by a more exte ...19817229815
[development of acquired resistance and production of precipitating and complement-fixing antibodies in rabbits repeatedly infested with females of haemaphysalis longicornis (ixodoidea: ixodidae) (author's transl)]. 19807230567
ectoparasites of sharp-tailed grouse, pediocetes phasianellus.seven species of ectoparasites were recovered during a survey of sharp-tailed grouse, pediocetes phasianellus, including the ticks, haemaphysalis chordeilis and h. leporispalustris; the lice, goniodes nebraskensis, lagopoecus gibsoni and amyrsidea sp.; the hippoboscid fly, ornithomyia anchineuria; and the mite, ornithonyssus sylviarum. seasonal changes in populations of ticks and lice were found but not for populations of the hippoboscids or mites. all stages of h. chordeilis were found on sharp ...19817241708
haemaphysalis punctata and ixodes ricinus in a coastal habitat in north wales.the populations of haemaphysalis punctata and ixodes ricinus on the mynydd mawr national trust reserve, gwynedd, were studied for two years. h. punctata was the more numerous species, being recoverable by blanket dragging over most of the year except for some very short days. there were spring and late summer peaks of activity. it seems probable that the complete life cycle of h punctata takes two or three years in this habitat. the activity of i ricinus was short relative to h punctata, but spr ...19817244372
control of the bush tick (haemaphysalis longicornis) with zebu x european cattle.brahman x hereford cattle carried only one-quarter as many engorging adult bush ticks (haemaphysalis (kaiseriana) longicornis) as hereford. simmental x hereford or friesian x hereford cattle when grazed together on the north coast of new south wales. fourteen percent of a brahman x hereford herd carried half of the engorging ticks suggesting that infestation levels would be further reduced by culling procedures. the results indicate an additional advantage to those already established for brahma ...19817259646
distribution of haemaphysalis concinna koch in the soviet union and some general features of its ecology. 19817274836
investigations on babesia motasi isolated from wales.a number of observations were carried out on the effect of the newly isolated parasite, babesia motasi (wales) on intact and splenectomised sheep and on a splenectomised goat. the parasite was not pathogenic for intact animals but caused fever and anaemia in splenectomised ones. b motasi (wales) was also studied morphologically, morphometrically and serologically. the common form of the parasite was seen to be a double pyriform, the mean length of one side being 2.23 micrometer. it appeared to b ...19817323470
notes on african haemaphysalis ticks, xiii. identity of h. (rhipistoma) cooleyi, a parasite of the rock hyrax in south africa (acarina: ixodidae).the lectotype male, allotype female, and paratype nymph of haemaphysalis (rhipistoma) cooleyi bedford, 1929, a parasite of the rock hyrax, procavia capensis, in the transvaal, are redescribed and illustrated to provide reliable criteria for differentiating between haemaphysaline parasites of hyraxes. keys are included for identifying adults of these haemaphysalis ssp. (orientalis nuttall & warburton, 1915; bequaerti hoogstraal, 1956; cooleyi bedford, 1929; hyracophila hoogstraal, walker & neitz, ...19817335328
blood parasites of sheep in the netherlands. ii. babesia motasi (sporozoa, babesiidae).a large babesia species occurs in sheep on the north sea islands of the netherlands. the tick haemaphysalis punctata is a vector. its pathogenicity appears to be low. it is morphologically similar to a turkish strain, considered to be b. motasi, which is also transmitted by haemaphysalis ticks. it differs from the turkish parasite serologically as well as in cross-immunity tests and in not being effective to goats. there may be a group of morphologically similar parasites with serological differ ...19807352333
[ixodid ticks and the causative agent of tick-borne encephalitis. 2. the genera dermacentor and haemaphysalis]. 19807393142
ectoparasites collected from bobwhite quail in the southeastern united states.twenty-one species of ectoparasites representing 19 genera were collected from 481 bobwhite quail (colinus virginianus) from nine areas in four southeastern states. sixteen species, amblyomma americanum, haemaphysalis chordeilis, haemaphysalis leporispalustris, eutrombicula alfreddugesi alfreddugesi, neoschoengastia americana, boydaia colini, pterolichus sp., colinophilus wilsoni, megninia sp., apionacarus wilsoni, colinoptes cubanensis, menacanthus pricei, colinicola numidiana, gonoides ortygis ...19807463603
review of the ixodid tick fauna (acari: ixodidae) of vietnam.forty-eight species making up the tick fauna of vietnam (genera ixodes, ixodes, amblyomma, aponomma, haemaphysalis, dermacentor, hyalomma, nosomma, rhipicephalus, boophilus) are reviewed, including one genus and nine species that are new records for vietnam, as well as four species described by the author.19957616517
isolation of borrelia burgdorferi, the lyme disease spirochete, from rabbit ticks, haemaphysalis leporispalustris--alberta. 19957620455
small and medium sized mammals as predators of ticks (ixodoidea) in south africa.a total of 1,640 stomach contents from 56 south african species of small and medium sized mammals were examined for ticks. only six ticks were found in three specimens of the caracal felis caracal. although identification of the tick species was not possible owing to fragmentation and partial digestion, the genus haemaphysalis was represented in four of these cases. we conclude that predation by small and medium sized mammals on ticks is uncommon in south africa.19937628224
an investigation into the health status and diseases of wild dogs (lycaon pictus) in the kruger national park.many factors have been cited as possible reasons for the decline in the number of wild dogs (lycaon pictus), but few studies have provided supportive data. between 1990 and 1993, the dynamics of 10 wild dog packs in the southern district of the kruger national park in south africa were monitored. casual observations of the causes of disease and mortality in the entire population were also recorded. during the same period, 46 wild dogs were immobilised, weighed, and subjected to physical examinat ...19957629782
[parasitic horse ticks in italy. observations on their distribution and pathogenic role].the following 13 species of ticks, belonging to ixodidae family, were recorded in italy on horse (equus caballus) since 1931: ixodes ricinus, i. gibbosus, haemaphysalis inermis, h. parva, h. punctata, h. sulcata, dermacentor marginatus, rhipicephalus sanguineus, rh. bursa, rh. turanicus, hyalomma marginatum, hy. detritum, boophilus annulatus. the regional distribution and the role of the species in the transmission of pathogens are reported.19947637997
[temporal distribution of ticks (acarina: ixodidae) in "macchia grande" park in manziana in the province of rome].temporal distribution of tick species was studied in the woodland "macchia grande" of manziana in the province of rome, italy. a total of 2,494 ticks was collected by means of drag sampling during one year of survey (1993). among the species identified, ixodes ricinus (linnaeus, 1758) (95.9%) was the most abundant, followed by haemaphysalis inermis (birula, 1895) (2.2%), rhipicephalus bursa (canestrini e fanzago, 1877) (1.8%), dermacentor marginatus sulzer, 1776) (0.1%). i. ricinus was present d ...19947638000
ticks (acari: ixodidae) infesting wild birds (aves) and white-footed mice in lyme, ct.birds were captured and recaptured (20.8% of 5,297) with japanese mist nets, and white-footed mice, peromyscus leucopus (rafinesque), were caught and recaught (69.1% of 355) with sherman box traps during the late spring, summer, and early fall from july 1989 through october 1991 to study tick-host relationships in lyme, ct. ixodes scapularis say, a vector of lyme disease spirochetes, borrelia burgdorferi sensu stricto johnson, schmid, hye, steigerwalt & brenner, infested 803 birds (15.2%) in 36 ...19957650706
comparison of prostaglandin e2 (pge2) in salivary gland of boophilus microplus, haemaphysalis longicornis and ixodes holocyclus, and quantification of pge2 in saliva, hemolymph, ovary and gut of b. microplus.the amount of prostaglandin e2 (pge2) in salivary gland of semi-engorged adult female boophilus microplus, haemaphysalis longicornis and ixodes holocyclus were 374.3 pg, 427.0 pg and 825.0 pg per one tick, respectively. it was thought that the pge2 production is a common phenomenon among ticks. then pge2 concentrations in saliva and hemolymph, salivary gland, ovary and gut of fully-engorged adult female b. microplus were compared. the pge2 concentration in saliva induced by pilocarpine was 40.3 ...19947696426
mechanisms of eosinophilia in mice infested with larval haemaphysalis longicornis ticks.infestation of larval haemaphysalis longicornis ticks induced a threefold increase of eosinophils in the peripheral blood of normal wbb6f1- +/+ mice 2 days after tick infestation. in genetically mast cell-deficient wbb6f1- w/wv mice, a threefold increase of blood eosinophils was observed 6 days after the tick infestation. however, marked infiltration of eosinophils was detected in the tick infestation sites of the wbb6f1- +/+ mice but not the wbb6f1- w/wv mice. when the mast cell deficiency of w ...19957751032
detection of hepatozoon canis oocyst from ticks collected from the infected dogs.we collected 220 ticks from 58 dogs infected with hepatozoon canis from 1990 to 1992 in yamaguchi and fukuoka prefectures, the western provinces of japan. these ticks were identified as haemaphysalis campanulata, h. longicornis, h. flava, ixodes ovata, and i. nipponensis. by histopathological examination of these ticks, two oocysts which seemed to be those of h. canis were observed in the haemocoele of an adult female h. longicornis and a nymph h. flava tick. the oocyst, about 300 x 150 microns ...19957756400
development of babesia gibsoni in the salivary glands of the larval tick, rhipicephalus sanguineus.the development of babesia gibsoni in the salivary glands of larval rhipicephalus sanguineus ticks was morphologically studied for 4 days of feeding of tick on rabbits. babesia gibsoni showed two forms (sporont and sporozoite) in the budding process. sporozoites were formed in the acinar cells of salivary glands and released from the hollow cytoplasmic area of these cells by day 4 of feeding. the morphology of b. gibsoni in the salivary glands of r. sanguineus shows a close similarity to those o ...19957756402
detection of rickettsia japonica in haemaphysalis longicornis ticks by restriction fragment length polymorphism of pcr product.pcr was applied to the detection of rickettsia japonica, the causative agent of oriental spotted fever (osf), in ticks collected at two sites of the muroto area on shikoku island, a major area in japan where osf is endemic. primer pair rr190.70p and rr190.602n of the r. rickettsii 190-kda antigen gene sequence of regnery and others (r.l. regnery, c.l. spruill, and b.d. plikaytis, j. bacteriol. 173:1576-1589, 1991) primed the dna extracted from haemaphysalis longicornis ticks but not those extrac ...19957790445
identification of rickettsiae from ticks collected in the central african republic using the polymerase chain reaction.spotted fever rickettsiosis have been identified on the african continent since their historical description in 1909. however, only rickettsia conorii and r. africae have been described in africa, and the current techniques for the detection of rickettsiae in ticks are difficult to apply in large field studies. we report here a preliminary study using genomic amplification by the polymerase chain reaction followed by restriction fragment length polymorphism (pcr-rflp) analysis directly on 310 cr ...19947908504
development of babesia gibsoni in the salivary glands of the tick, haemaphysalis longicornis. 19937967376
observations of babesia gibsoni in the ovary of the tick, haemaphysalis longicornis. 19937967377
prevalence of lyme borrelia in ticks, especially ixodes persulcatus (acari: ixodidae), in central and western japan.prevalence of lyme borrelia in unfed ticks was surveyed in central and western japan during spring from 1991 to 1993. the tick fauna was diverse; ticks obtained consisted of four genera and more than 12 identified species, and both southern and northern species coexist with altitudinal separation. midguts of ticks were cultured in bsk medium for spirochetal isolation. borrelia-positive rates for adults of both a common species, ixodes ovatus neumann, and a northern species, ixodes persulcatus sc ...19948057323
ticks (acari: ixodidae) collected from small and medium-sized kansas mammals.seven species of hard-bodied ticks were collected from 20 species of small and medium-sized mammals in kansas; amblyomma americanum l., dermacentor variabilis (say), haemaphysalis leporispalustris (packard), ixodes cookei packard, i. kingi bishopp, i. sculptus neumann, and i. texanus banks. dermacentor variabilis was found statewide, a. americanum only in the eastern one-third of the state, and the ixodes spp. and h. leporispalustris were widely scattered. the most common tick found was d. varia ...19948057327
first isolation of a rickettsia closely related to japanese spotted fever pathogen from a tick in japan.in may 1993, we collected unfed ticks in anan, tokushima prefecture, shikoku district, japan, a highly endemic area of japanese spotted fever (jsf). we isolated jsf rickettsiae from these ticks by inoculating tick-emulsions into l-929 cells. of the four genera and seven species of ticks examined, only one larva of dermacentor taiwanensis sugimoto yielded a rickettsial isolate. the isolate (dt-1 strain) was found to belong to the serotype common to the causative agent of jsf. this was based on it ...19948189407
geographical distribution, host associations, and vector roles of ticks (acari: ixodidae, argasidae) in sweden.this review covers the geographic distribution and host relationships of the tick species in sweden. ixodes uriae white, i. caledonicus nuttall, i. unicavatus neumann, i. arboricola schulze & schlottke, and i. lividus koch are ornithophagous species. i. trianguliceps birula, i. canisuga johnston, i. hexagonus leach, and argas vespertilionis (latreille) are mammalophagous. i. ricinus (l.) and haemaphysalis punctata canestrini & fanzago feed on both birds and mammals. all these tick species may be ...19948189415
development of babesia ovata in the salivary glands of the nymphal tick, haemaphysalis longicornis.the development of babesia ovata in the salivary glands of nymphal haemaphysalis longicornis ticks was morphologically studied for 4 days of feeding of tick on rabbits. babesia ovata showed two forms (sporont and sporozoite) in the budding process. sporozoites were formed in the acinar cells of salivary glands and released from the hollow cytoplasmic area of these cells by day 4 of feeding.19948204758
ticks (acari: ixodidae) infesting medium-sized wild mammals in southwestern tennessee.seven species of ixodid ticks (n = 2,661) were found on medium-sized wild mammals (n = 295) during a 13-mo study in shelby county, tennessee. the seven tick species collected were dermacentor variabilis (say), amblyomma americanum (l.), rhipicephalus sanguineus (latreille), ixodes texanus (banks), i. cookei (packard), i. scapularis (say), and haemaphysalis leporispalustris (packard). the raccoon had the greatest tick species diversity in all of the aforementioned ticks except h. leporispalustris ...19938254637
[distribution of ixodes ricinus ticks in yugoslavia].in this paper the authors present distribution of tick ixodes ricinus in both republics of yugoslavia--serbia and montenegro. the ticks were collected from domestic animals and humans sporadically. the determination showed following species: ixodes ricinus, i. persulcatus, i. hexagonus, dermacentor marginatus, d. pictus, rhipicephalus bursa, r. sanguineus, haemaphysalis punctata, h. inermis, h. sulcata, h. leporis-palustriis, h. concinna, boophilus (margaporus) calcaratus, hyalomma savignyi, h. ...19938262430
haemaphysalis juxtakochi cooley (acari: ixodidae), a neotropical tick species, found in ohio.haemaphysalis juxtakochi cooley, 1946, an ectoparasite of deer and other large mammals from mexico southward through central and south america, was recovered from the ear of a white-tailed deer, odocoileus virginanus zimmermann, in ohio. this represents the first record of h. juxtakochi from the united states.19938271252
haemaphysalis suntzovi, a new species of ixodid tick (acari) from vietnam.haemaphysalis suntzovi kolonin, n. sp. is described from males and females collected on the porcupine hystrix brachyura l., boar, sus scrofa l., and vegetation from vietnam. this new species is closely related to haemaphysalis roubaudi toumanoff and species of the subgenus aborphysalis.19938271254
light and electron-microscopical observations of the early developmental stages of theileria sergenti in the gut of haemaphysalis longicornis.morphological characteristics of the early developmental stages of theileria sergenti in the vector tick were observed by light and electron-microscopies and compared with those of other theileria species. just before the repletion of nymphs, various stages of the parasite were observed in gut contents of tick by light microscopy: the spherical intra-erythrocytic stage, the ring-form stage, the spindle-shaped stage and the round-form stage. electron microscopy revealed that the spherical intra-e ...19938286540
theileria sergenti: transformation of zygotes into kinetes in vector ticks, haemaphysalis (kaiseriana) longicornis and h. (k.) mageshimaensis.invagination or transformation of a zygote of theileria sergenti into a kinete was examined with giemsa-stained smears of the midgut of vector ticks, haemaphysalis longicornis and h. mageshimaensis. zygotes invaginated almost simultaneously with the moulting of host ticks. they were round and oval, and measured 5.4 to 6.7 microns in diameter on average. the kinetes developing in the zygotes were situated in the periphery of cytoplasm and were spindle- or club-shaped.19938286543
development of theileria sergenti in vector ticks, haemaphysalis longicornis, during blood sucking. 19938346995
histological observations on the schizonts in cattle infected with japanese theileria sergenti.histological observations were performed on the schizonts of japanese theileria sergenti in three calves necropsied 8 and 10 days after application of nymphal haemaphysalis longicornis infected with t. sergenti. in all the three calves, schizonts were observed in the cytoplasm of huge cells formed in the drainage lymph nodes, liver and spleen. the huge cells were 50 to 200 microns in diameter. schizonts had granular appearance and an irregular shape and were 1 to 7 microns in diameter. ultrastru ...19938399735
sporogony of theileria sergenti in the salivary glands of the tick vector haemaphysalis longicornis.sporogony of theileria sergenti in the salivary glands of the tick vector haemaphysalis longicornis was observed by light and transmission electron microscopy. fission bodies that developed from kinetes were observed as masses (approximately 32 x 15 microns) that occupied half of the acinous cell at 2 days after the infestation of ticks. parasites possessed an irregular nucleus of low electron density, highly electron-dense granules, and mitochondrion-like bodies in the cytoplasm. parasites deve ...19938469666
protective immunity and mast cell and eosinophil responses in mice infested with larval haemaphysalis longicornis ticks.wbb6f1-+/+ mice were infested with larval haemaphysalis longicornis ticks twice at an interval of 14 days: apparent resistance against ticks was expressed in the second infestation. the first infestation induced degranulation of a small number of mast cells at the feeding sites within 6 days, and resulted in two-fold increases of mast cell numbers on day 14 with a significant elevation of total immunoglobulin e (ige) levels in sera and high proportion of ige-bound mast cells. the second infestat ...19938506116
occurrence of different genospecies of borrelia burgdorferi sensu lato in ixodid ticks of valais, switzerland.a total of 825 adult ticks (727 ixodes ricinus, 72 dermacentor marginatus and 26 haemaphysalis punctata) was collected from vegetation in valais (switzerland) in 1987 to 1992. they were examined for the presence of borrelia burgdorferi sensu lato, the etiologic agent of lyme borreliosis. b. burgdorferi sensu lato was detected by indirect immunofluorescence assay, dark field microscopy and/or culture in 221 out of 727 i. ricinus (30.4%) and none in the other two species. from these 221 infected t ...19958549716
prevalence of ticks infected with francisella tularensis in natural foci of tularemia in western slovakia.the prevalence of ticks infected with f. tularensis was followed during a systematic surveillance in endemic area of tularemia in western slovakia over the years 1984-93. ticks were collected from vegetation in localities of podunajské biskupice, in the vicinity of the capital of slovakia, bratislava, near the river danube. in total 6033 ticks, mostly adults of dermacentor reticulatus and ixodes ricinus (4994 and 1004, respectively) and 35 nymphs of haemaphysalis concinna, were examined for the ...19958549717
prevalence of rickettsia-like organisms and spotted fever group rickettsiae in ticks (acari: ixodidae) from zimbabwe.the prevalence of rickettsia-like organisms in ticks from zimbabwe was determined using the hemolymph test. amblyomma hebraeum had the highest prevalence of rickettsia-like organisms. other species with rickettsia-like organisms included amblyomma sparsum, amblyomma variegatum, hyalomma marginatum rufipes, ripicephalus simus, haemaphysalis leachi, amblyomma rhinocerotis, and hyalomma truncatum. ticks with no demonstrable rickettsia-like organisms infection were boophilus decoloratus, haemaphysal ...19958551500
palma virus, a new bunyaviridae isolated from ticks in portugal.an agent pathogenic for laboratory albino swiss mice was isolated from a pool of haemaphysalis punctata ticks collected from cattle on a farm located in alcácer do sal county, southern portugal. the isolated virus was shown to be distinct from but serologically related to virus members of the bhanja antigenic group. this new virus in the family bunyaviridae was named palma for the farm where ticks have been collected for several studies.19948586533
ixodid ticks collected at the faculty of veterinary science, onderstepoort, from dogs diagnosed with babesia canis infection.in an attempt to identify the vectors of babesia canis, ticks were collected over a period of 3 years from a total of 395 dogs diagnosed as infected with this protozoan parasite at the veterinary faculty, onderstepoort. haemaphysalis leachi was the only tick species recovered from 164 of these dogs, and it occurred in mixed infestation on a further 140 of the dogs. rhipicephalus sanguineus was collected in pure infestation from 59 dogs with a further 87 harbouring mixed infestations. sixteen dog ...19958596189
lyme disease spirochetes in ticks collected from birds in midwestern united states.in a tick-spirochete survey conducted from all 1989 through fall 1992 in north-western wisconsin, 4,256 birds (composed of 91 species) were examined for ticks. infestations were recorded for 400 birds (composed of 30 species). of 1,184 ticks taken from 335 birds (composed of 26 species), 60 (5%) haemaphysalis leporispalustris (packard) from 8 species of birds were infected with the lyme disease spirochete. borrelia burgdorferi johnson, schmid, hyde, steigerwalt & brenner. similar surveys conduct ...19968667384
spring migratory birds (aves) extend the northern occurrence of blacklegged tick (acari:ixodidae).birds that had migrated northward across lake superior were captured upon reaching landfall at thunder cape (48 degrees 18' n, 88 degrees 56' w) at the southwestern tip of the sibley peninsula, northwestern ontario, from 9 may to 9 june 1995. twenty-one of 530 birds examined (6 of 55 species) had a total of 34 ticks; 1 blue jay, cyanocitta cristata, had a northern fowl mite, ornithonyssus sylviarum (canestrini & fanzago). four blacklegged tick, ixodes scapularis say, larvae were found on an amer ...19968699451
cuticular plasticization induced by copulatory stimuli in female haemaphysalis longicornis (acari:ixodidae).partially engorged adult female ticks, haemaphysalis longicornis neumann, received complete, incomplete, or no copulatory stimuli. subsequently, they were inflated with physiological saline by injection into the haemocoel. ticks that copulated received both preinseminational and inseminational stimuli and increased their body volume > 10-fold. ticks that incompletely copulated received only preinseminational stimuli and expanded slightly, whereas ticks that did not copulate did not expand. these ...19968699472
nairobi sheep disease virus isolated from haemaphysalis intermedia ticks collected in sri lanka. 19968729633
the seasonal occurrence of ticks (acari: ixodidae) on sheep and in the field in the judean area of israel.a 2 year survey of ixodid ticks in the judean area of israel between 1983 and 1985 showed that sheep were parasitized by the following species: rhipicephalus sanguineus group (30.6%), rhipicephalus bursa (25.3%), haemaphysalis cretica (20.5%), haemaphysalis otophila (20.1%) and hyalomma anatolicum excavatum (3.1%). three other species, hyalomma marginatum rufipes, boophilus annulatus and amblyomma lepidum were also present but in very low numbers. a total of 50,816 specimens (78.1% adult ticks) ...19968746133
[the subspecies specificity of babesia canis].the large babesia species of dogs, babesia canis, is transmitted by different ticks. dermacentor reticulatus, rhipicephalus sanguineus and haemaphysalis leachi are the known main vectors. four b. canis isolates of different geographic origin were investigated for their transmission specificity and pathogenicity in infection trials. r. sanguineus ticks exclusively transmitted the babesia isolate from egypt. d. reticulatus was the vector for isolates from hungary and france. transmission of an sou ...19968765536
risk of human exposure to vector ticks (acari: ixodidae) in a heavily used recreational area in northern california.the risk of humans encountering vector ticks along hiking trails or in picnic grounds in a lyme disease-endemic area was evaluated in a multipurpose recreational area (tilden regional park) in the populous san francisco bay region of california. four hillside hiking trails (two high-use, two low-use) were sampled by dragging and walking through low vegetation biweekly for one year; four heavily used picnic areas were sampled concurrently by dragging. adults of three human-biting ticks were enume ...19968780455
isolation of a south african vector-specific strain of babesia canis.a south african strain of babesia canis parasites was isolated and shown to be vector-specific to only one of the two vectors in the region, haemaphysalis leachi. this tick was found to transmit the parasite in its adult instar. when infected as larvae, the ticks would not transmit in the proceeding nymphal instar. the vector-specific strain was named the 'thomas strain' after one of the dogs involved in isolating it. a survey revealed a prevalence of > 50% of this strain in four widely separate ...19968792576
ticks of domestic animals in the macedonia region of greece.a study was carried out on ticks of domestic animals in the macedonia region of greece. during 1983-1986, 11,620 tick specimens, belonging to 18 species and subspecies, were collected from cattle, sheep, goats and dogs, in 64 localities throughout macedonia. rhipicephalus bursa, the most common tick, and hyalomma marginatum marginatum occurred in all bioclimatic zones, as well as the two one-host ticks, boophilus annulatus and h. detritum scupense, which were present in fewer localities. r. tura ...19968792578
borreliae in immature ixodes ricinus (acari:ixodidae) ticks parasitizing birds in the czech republic.of 411 forest birds of 33 species examined near valtice, czech republic, 29% were infested with ixodes ricinus (l.); 2.2% were parasitized by haemaphysalis concinna koch. borreliae were detected in 5.1 and 11.7% of larval and nymphal i. ricinus, respectively. none of the 13 h. concinna tested was infected. in total, 3.2% of the birds examined were parasitized by i. ricinus immatures infected by borreliae. borreliae-containing ticks parasitized european robin, erithacus rubecula (l.); eurasian bl ...19968840682
the comparative host status of red veld rats (aethomys chrysophilus) and bushveld gerbils (tatera leucogaster) for epifaunal arthropods in the southern kruger national park, south africa.red veld rats (aethomys chrysophilus) and bushveld gerbils (tatera leucogaster) were trapped at monthly intervals, when possible, over a 2-year period, in the southern kruger national park, mpumalanga province. forty-six specimens of each species were caught, euthenased and microscopically examined for fleas, lice, ticks and mites. clear differences existed between the two rodent hosts in infestation intensity and also parasite species. the flea, xenopsylla brasiliensis, commonly and exclusively ...19968856764
frequent isolation of francisella tularensis from dermacentor reticulatus ticks in an enzootic focus of tularaemia.a total of 924 questing dermacentor reticulatus (fabricius), 504 ixodes ricinus (l.), sixty haemaphysalis concinna koch and 718 mosquitoes (aedes spp.) were examined in a floodplain forest ecosystem during the 1994-95 outbreak of tularaemia in south moravia, czech republic. francisella tularensis was not isolated from h.concinna ticks or aedes spp. mosquitoes, whereas twenty-one isolates were recovered from the other haematophagous arthropods. dermacentor reticulatus revealed a significantly hig ...19968887334
experiments on the transmission of babesia major and babesia bigemina by haemaphysalis punctata.experiments on the transmission by haemaphysalis punctata of three large babesia strains were carried out. three babesia-free batches of laboratory reared h. punctata ticks were infected with two strains of babesia major, b. major (xingjiang strain), isolated with adult ticks of h punctata and b. major (henan strain), isolated with h. longicornis) and a strain of babesia bigemina by feeding them on the calves infected by inoculation of blood stabilates. h. punctata was shown to be capable of tra ...19969011018
genotypic identification of three new strains of spotted fever group rickettsiae isolated in china.polymerase chain reaction (pcr) and restriction endonuclease fragment length polymorphism (rflp) analysis were used to characterize the genotypic diversity of three isolates of spotted fever group (sfg) rickettsiae isolated from ticks in china. a primer pair designed from dna sequence encoding 190 k protein antigen of r. rickettsii and genomic dnas obtained from the isolates were used in pcr. the pcr products were cleaved with restriction endonucleases psti and rsai, and the digestion patterns w ...19969014012
survival of six species of african ticks in relation to saturation deficits.the survival of unfed males and females of six species of african ticks was monitored at five different saturation deficits at constant temperature (25 degrees c). the survivorship curves for each species comprised a pre-mortality period, prior to when ticks started to die and a mortality period corresponding to a rapid increase in the mortality rate. longevity was defined as pre-mortality plus mortality. a negative correlation between the longevity of the ticks and the saturation deficits was f ...19969022266
[redescription of haemaphysalis flava and ixodes tanuki collected from a raccoon dog in korea].a total of 135 hard ticks consisting of 2 species of 2 genera, 117 haemaphysalis flava and 18 ixodes tanuki, were collected from a korean raccoon dog (nyctereutes procyonoides koreensis) caught at the moaksan (mt.). chollabuk-do, korea in march 1995. it is the first record that i. tanuki appears in the korean fauna.19979100433
ticks (acari: ixodida) uncommonly found biting humans in north carolina.collection records are presented that document human-biting by otobius megnini, amblyomma maculatum, haemaphysalis leporispalustris, ixodes cookei, ixodes dentatus, and rhipicephalus sanguineus in north carolina. these species are either extremely rare in north carolina or they are normally considered non-human feeders. the record of otobius megnini represents the first collection of this species in north carolina in over 50 years. it is proposed that immature rhipicephalus sanguineus feed on hu ...19979221733
helminths and arthropods of black and white rhinoceroses in southern africa.helminths and arthropods were collected and quantified from two black rhinoceroses (diceros bicornis bicornis) and one white rhinoceros (ceratotherium simum), and ticks from an additional four black and two white rhinoceroses in southern africa. the helminths of a black rhinoceros from the republic of south africa and one from namibia were quantitatively measured and recorded for each compartment of the alimentary tract. probstmayria vivipara was the most abundant parasite in each animal. a rece ...19979249695
contribution to the knowledge of ixodidae ticks of wild mammals of somalia.this study was based on material collected in 1983-1984 from wild mammals of the middle scebeli. low scebeli and bay regions of somalia. a total of 292 specimens (156 males, 65 females, 70 nymphase, 1 larva) from 13 host species were examined. the following species of ixodidae were identified. amblyomma variegatum (fabricius, 1794); haemaphysalis calcarata neumann, 1902; haemaphysalis spinulosa neumann, 1906; rhipicephalus armatus pocock, 1900; rhipicephalus pravus donitz, 1910; rhipicephalus pu ...19969257347
ixodid ticks infesting rodents and sheep in diverse biotopes of southern india.a total of 127 rodents were trapped in southern india. examination of these rodents revealed the presence of 2 species of ticks, haemaphysalis spinigera and rhipicephalus ramachandrai. the former species is the principal vector of kyasanur forest disease (kfd) in india, and the latter's role, if any, is unknown. sheep grazing in 1 of the study area were infested with another ixodid tick. haemaphysalis intermedia, which is a vector of bhanja virus in india. the presence of h. spinigera on domesti ...19979267427
endosymbionts of ticks and their relationship to wolbachia spp. and tick-borne pathogens of humans and animals.the presence, internal distribution, and phylogenetic position of endosymbiotic bacteria from four species of specific-pathogen-free ticks were studied. these included the hard ticks ixodes scapularis (the black-legged tick), rhipicephalus sanguineus (the brown dog tick), and haemaphysalis longicornis and the african soft tick ornithodoros moubata. pcr assays for bacteria, using two sets of general primers for eubacterial 16s and 23s rrna genes (rdnas) and seven sets of specific primers for wolb ...19979327557
spatial distribution and seasonality of ticks (acarina: ixodidae) in a protected area in the northern apennines.infestation of small rodents by ixodid ticks and frequency of host-seeking ticks collected by dragging were studied at orecchiella natural park (northern apennines) in 1994 and 1995. levels of infestation of apodemus spp. by immature dermacentor marginatus were higher in beech wood (5.1 larvae and 1.3 nymphs per mouse) than in oak-chestnut wood and in coniferous wood. larval d. marginatus peaked in mid summer, whereas nymphs peaked in late summer. host-seeking haemaphysalis punctata were mostly ...19979419846
mosquitoes (diptera: culicidae), in contrast to ticks (acari: ixodidae), do not carry francisella tularensis in a natural focus of tularemia in the czech republic.in total, 9,167 mosquitoes (aedes spp.) and 1,987 ixodid ticks--1,423 dermacentor reticulatus (f.), 504 ixodes ricinus (l.), and 60 haemaphysalis concinna koch--were examined in an active enzootic focus (floodplain forest-meadow ecosystem) of tularemia in south moravia. czech republic. although no f. tularensis was detected in mosquitoes or h. concinna, 30 isolates were recovered from d. reticulatus (infection rate, 2.1%) and 1 isolate from i. ricinus (infection rate, 0.2%). ixodid ticks, especi ...19979439120
18s rrna gene sequences and phylogenetic relationships of european hard-tick species (acari: ixodidae).the complete 18s rrna gene sequences of the following six european hard-tick species were obtained by direct pcr cycle sequencing and silver-staining methods: rhipicephalus pusillus, boophilus annulatus, dermacentor marginatus, hyalomma lusitanicum, haemaphysalis punctata, and ixodes ricinus. differences observed in the sequence alignment of these six species together with the 18s rrna gene sequences of 13 other hard-tick species demonstrate that this gene is a good marker for supraspecific diff ...19989491423
theileriosis of sheep and goats in china.theileriosis is an important disease of sheep and goats in west china. its main distribution includes qinghai, gansu, ningxia, inner mongolia, shaanxi and sichuan. the epidemic period is from late march to july with april-may being the peak months. this is the period of most intensive tick attack by haemaphysalis qinghaiensis (77.2-99.24%) during the year. it has been proved that the nymphs and adults, which develop from larvae and nymphs engorged on infected sheep or goats can transmit the path ...19979512737
babesiosis in china.the importance of babesiosis in livestock in china is discussed and mainly focused on bovine and equine babesiosis. babesiosis is still one of the most important diseases affecting livestock and has caused great economic loss. nine species of babesia have been recognized in livestock: b. bigemina, b. bovis, b. major, b. motasi, b. ovis, b. perroncitoi, b. trautmanni, b. equi (theileria equi), b. caballi. the distribution of babesia follows the distribution of the tick vectors. the main vectors o ...19979512738
babesiasis in nanjing area, china.this article discusses the tick-borne babesiases which harm dairy cattle, buffaloes and dogs. in addition, the pathogen, vector, seasonal occurrence, hosts, symptoms, pathological changes and treatment are summarized and analysed. the pathogens in this area were identified as babesia bigemina, b. bovis and b. gibsoni; the vectors as boophilus microplus, rhipicephalus haemaphysaloides, haemaphysalis longicornis. affected buffaloes were found from april to september, peak numbers occurred between ...19979512739
an unidentified species of theileria infective for cattle discovered in china.infection experiments, morphological observations and transmission experiments were conducted with an unidentified theileria sp. isolated from a naturally infected ox. the results showed that the protozoa could multiply extensively in a splenectomized ox and the parasitaemia could reach 52.69%. the theileria sp. was polymorphic: being pear-shaped, circular, elliptical, rod-like, comma-shaped, three-leafed- or cross-shaped and having many other irregular-shapes which were seldom detected. in eryt ...19979512745
distribution of borrelia burgdorferi s.l. spirochaete dna in british ticks (argasidae and ixodidae) since the 19th century, assessed by pcr.the distribution of borrelia burgdorferi sensu lato, the lyme borreliosis agent, was surveyed in british ticks in the collection of the natural history museum, london. alcohol-preserved specimens of eight species of ticks known to attack humans were studied: ixodes ricinus, i. hexagonus, i. uriae, i. trianguliceps, dermacentor reticulatus, haemaphysalis punctata, rhipicephalus sanguineus and argas vespertilionis. the sample comprised all life stages and originated from a wide range of host speci ...19989513944
investigation of haematophagous arthropods for borreliae--summarized data, 1988-1996.blood-sucking arthropods, collected in south moravia, czech republic, were examined by darkfield microscopy for borreliae from 1988 to 1996. among host-seeking ixodid ticks (8481 ixodes ricinus (l.), 372 dermacentor reticulatus (fabr.), 167 haemaphysalis concinna koch), borreliae were only observed in adult (23.2%), nymphal (17.2%) and larval (6.3%) i. ricinus. the prevalence of borreliae in i. ricinus did not vary considerably among habitats except for lower values in agroecosystems, xerothermi ...19989516997
tick-borne diseases of sheep and goats caused by babesia, theileria or anaplasma spp.a review is given on the babesia, theileria, and anaplasma species infecting sheep and goats. b. ovis is the most important disease agent. it is transmitted by rhipicephalus bursa, r. turanicus, hyalomma anatolicum excavatum, and probably by r. evertsi evertsi b. ovis is widely spread in southern europe, the middle east, and central asia. its geographical distribution in south and east asia and in africa is widely unknown. b. motasi obviously represents several nosodemes in separate regions. it ...19979530692
ticks and tick-borne diseases as a constraint to sheep and goat production in italy. selected features.the paper reviews basic information on small ruminant production in italy and on the tick species commonly found on them. a total of 13 ixodidae species have been reported to parasitise sheep in the country. the tick species were belonging to five genera: ixodes (two species), haemaphysalis (four species), dermacentor (one species), rhipicephalus (three species) and hyalomma (three species). the same species, with the exception of haemaphysalis inermis and hyalomma detritum have been reported al ...19979530693
tick-borne diseases of sheep and goats and their related vectors in iran.haemoparasitic diseases have long been considered as a major problem to efficient sheep and goats production in iran. theileriosis due to theileria hirci and babesiosis due to babesia ovis and b. motasi are the most pathogenic protozoa. b. crassa, anaplasma ovis and eperythrozoon ovis are usually non-pathogenic and do not cause any apparent problem. the major tick genera found on sheep and goats are hyalomma, rhipicephalus, haemaphysalis, ixodes and rarely dermacentor distributed in all part of ...19979530694
general review of the tick species which parasitize sheep and goats world-wide.the paper lists the genera and species of ticks which occur world-wide in sheep and goats. the list is based on records documented in scientific ticks collections. most ticks belong to haemaphysalis, rhipicephalus and hyalomma genera which include many species with unclear taxonomic status and which are rather difficult to identify. the review points out that present knowledge on ticks which parasitize sheep and goats world-wide is still fragmentary.19979530696
detection of borrelia burgdorferi from ticks (acari) in hebei province, china.from may 1992 to august 1993, 1,196 ticks were collected by flagging vegetation and from domestic animals in chengde, zhangjiakou, shijiazhuang, and handan districts of hebei province. of those ticks collected, 954 were haemaphysalis japonicum warburton and h. longicornis neumann, 205 were ixodes persulcatus schulze, and 37 were dermacentor silvarum olenev. four strains of borrelia burgdorferi were isolated from 135 i. persulcatus collected in weichang and zhuolu counties. three of 574 haemaphys ...19989538567
[ultrastructural features of histopathologic changes at the site of attachment of the larva of the ixodid tick haemaphysalis longicornis to the body of the host].this article continues the series of electronic microscopical investigations of tick attachment and host's inflammatory reaction in the attachment site. in all this works we used larvae of different ixodid ticks but the same species of the host (white mouse), ixodid species having different type of attachment. dermacentor marginatus (amosova, 1989a) is characterized by the superficial penetration of mouth parts, the abundance of cement around them and on the surface of the host's skin, the mouth ...19979541934
detection of rickettsia sibirica in ticks and small mammals collected in three different regions of china.the primers rr 190.70p and rr 190.602n were used to detect spotted fever group (sfg) rickettsiae by polymerase chain reaction (pcr) in ticks and small mammals collected in three different regions of china. the obtained results indicated that specific dna fragments of sfg rickettsiae were amplified from dermacentor silvarum, d. sinicus, d. auratus, haemaphysalis concinna, h. wellingtoni, h. yeni, apodemus agrarius, microtus fortis. clethrionomys rufocanus, ondatra zibethica, rattus flavipectus an ...19989645245
lyme disease spirochetes in ticks from northeastern china.during may 1996, field surveys on lyme disease spirochetes were conducted in beijing, shenyang, fushun, and inner mongolia in northeastern china. the ticks collected consisted of 3 genera and 12 species. of these, ixodes persulcatus was dominant in sun-exposed vegetation in forests in inner mongolia; 57 borrelia strains (55/123 unfed adults and 2/5 immature stages fed on a rodent) were obtained from this tick by bsk culture. additionally, 2/2 apodemus peninsulae were positive. ixodes nipponensis ...19989645846
mitochondrial 16s rdna sequences and phylogenetic relationships of species of rhipicephalus and other tick genera among metastriata (acari: ixodidae).the mitochondrial 16s rrna gene sequences of the following eight european metastriata tick species were obtained by direct polymerase-chain-reaction cycle sequencing and silver-staining methods: rhipicephalus bursa, r. pusillus, r. sanguineus, r. turanicus, boophilus annulatus, dermacentor marginatus, haemaphysalis punctata, and hyalomma lusitanicum. this mitochondrial gene seems to be a good marker for the establishment of genetic relationships among closely related tick species, but it does no ...19989660138
population dynamics of immature amblyomma maculatum (acari: ixodidae) and other ectoparasites on meadowlarks and northern bobwhite quail resident to the coastal prairie of texas.a survey of ectoparasites from 219 meadowlarks conducted during 2 consecutive fall-winter periods in a coastal prairie found immature amblyomma maculatum koch to be the most abundant parasite. peak larval infestations occurred in december with 80-100% of collected birds infested and with a monthly mean of up to 34 larvae per bird. peak nymphal infestations occurred in february or march with 95-100% of birds infested and with a monthly mean of up to 11 nymphs per bird. seasonal dynamics of these ...19989701932
geographic distribution of ticks (acari: ixodidae) in michigan, with emphasis on ixodes scapularis and borrelia burgdorferi.a 12-yr (1985-1996) passive survey in michigan based upon tick submissions from citizens yielded 4,755 ticks of 21 species, 16 of which were probably indigenous in the state. three species of dermacentor [most common, d. variabilis say and d. albipictus (packard)]; 2 species of amblyomma [most common, a. americanum (l.)]; and 12 species of ixodes (most common, i. cookei packard and i. scapularis say), as well as haemaphysalis leporispalustris (packard), rhipicephalus sanguineus latreille, and th ...19989775623
[detection of north-asia tick-borne spotted fever in ticks and rodents along the heilongjiang river-side by restriction fragment length polymorphism of pcr products].in order to elucidate the natural foci of north-asia tick-borne spotted fever along the bank of heilongjiang river, we used pcr/rflp to detect spotted fever group rickettsiae in ticks and rodents. the results showed that the wild samples of dermacentor silvarum, haemaphysalis concinna and apodemus agrarius, microtus fortis, clethrionomys rufocanus and ondatra zibethica were all positive with amplification, but typhus rickettsiae, tsutsugamushi fever rickettsiae and q fever rickettsiae were all n ...19979812471
[studies on epidemiology and etiology of lyme disease in china].from 1987 to 1996, an investigation and study on lyme disease was conducted in sixty counties and districts of twenty-two provinces (autonomous region, municipality). seroepidemiological findings indicated that some residents from forest areas of twenty-two provinces had a high antibody titer for borrelia burgdorferi with positive rate 5.06% (1724/34104). endemic foci of lyme disease were discovered in seventeen provinces by etiological evidence. typical cases of lyme disease were diagnosed in e ...19979812472
comparison of ehrlichia muris strains isolated from wild mice and ticks and serologic survey of humans and animals with e. muris as antigen.in metropolitan tokyo, the ehrlichia muris seropositivity rate of 24 wild mice was 63% in hinohara village, but in the surrounding areas, it was 0 to 5%. this finding suggests that the reservoir of e. muris is focal. among the 15 seropositive mice, ehrlichiae were isolated from 9 apodemus speciosus mice and 1 a. argenteus mouse, respectively. five ehrlichial isolates were obtained from 10 ticks (haemaphysalis flava) collected in asuke town, aichi prefecture, where the e. muris type strain had be ...199910074536
molecular characterization of a haemaphysalis longicornis tick salivary gland-associated 29-kilodalton protein and its effect as a vaccine against tick infestation in rabbits.the use of tick vaccines in mammalian hosts has been shown to be the most promising alternative tick control method to current use of acaricides, which suffers from a number of limitations. however, the success of this method is dependent on the identification, cloning, and in vitro expression of tick molecules involved in the mediation of key physiological roles with respect to the biological success of a tick as a vector and pest. we have sequenced and characterized a haemaphysalis longicornis ...199910084999
[investigation on primary vectors of borrelia burgdorferi in china].from 1987 to 1997, primary vectors of borrelia burgdorferi sensu lato (b.b.s.l.) were investigated in china. a total number of 17,000 ticks collected from 20 provinces, city and autonomous region were classified, including 2 families 8 genus 23 species. there were 108 isolates of b.b.s.l. discovered from 8 species of ticks, including ixodes persulcatus, i. granulatus, i. acutitarsus, haemaphysalis concinna, h. longicornis, h. bispinosis, h. cornigera taiwana and dermacentor silvarum. ixodes pers ...199810322682
molecular cloning of two haemaphysalis longicornis cathepsin l-like cysteine proteinase genes.immunological protection of mammalian hosts against tick infestation has been proposed as the most sustainable alternative tick control method to the current use of acaricides which has several limitations. the success of this method is dependent on the identification of key molecules for use as tick vaccine antigens. proteolytic enzymes are involved in a wide range of cellular processes in eukaryotes such as development regulation and nutrition, thus they can be considered as good target antige ...199910379941
parasites of domestic and wild animals in south africa. xxxvi. arthropod parasites of yellow mongooses, cynictis penicillata (g. cuvier, 1829).eighty yellow mongooses, cynictis penicillata, from five localities in south africa were examined for arthropod parasites. ten ixodid tick species, of which haemaphysalis zumpti was the most abundant, prevalent and widely distributed, were collected. the mongooses were also infested with two mite species. echidnophaga gallinacea was the most abundant of the eight flea species collected. it and ctenocephalides connatus were present at every locality. a single biting louse species, felicola cynict ...199910396760
characterization of proteolytic enzymes expressed in the midgut of haemaphysalis longicornis.the proteolytic activities present in midguts of both fed and unfed haemaphysalis longicornis were assessed by using the gelatin-substrate gel electrophoresis and inhibitor sensitivity analyses. three predominant (116, 48 and 48 kda) and two weak (55 and 60 kda) proteinase bands were commonly expressed in both unfed and fed ticks, while a weak 80 kda band was only present in fed ticks. consistent with observations on other tick species, proteolytic activity against the gelatin substrate was obse ...199910414026
ticks feeding on humans: a review of records on human-biting ixodoidea with special reference to pathogen transmission.in this article, literature records of argasid and ixodid ticks feeding on humans worldwide are provided in view of increased awareness of risks associated with tick bites. ticks can cause paralyses, toxicoses, allergic reactions and are vectors of a broad range of viral, rickettsial, bacterial and protozoan pathogens. approximately 12 argasid species (argas and ornithodos) are frequently found attached to humans who intrude into tick-infested caves and burrows. over 20 ixodid tick species are o ...199910581710
parasites of domestic and wild animals in south africa. xxxvii. ixodid ticks on cattle on kikuyu grass pastures and in valley bushveld in the eastern cape province.individual calves, exposed to infestation for 14 d on dry-land kikuyu grass pastures on the coast near alexandria, were slaughtered at approximately monthly intervals over a period of 2 years and examined for ticks. although seven species were recovered total tick burdens were for the most part low. changing the acaricide with which other cattle on the farm, but not the survey calves, were treated from an organophosphate-based compound to a synthetic pyrethroid resulted in a marked sustained red ...199910631707
ticks of south carolina (acari: ixodoidea).county and host records are reported for 19 species of ticks from south carolina: amblyomma americanum, amblyomma maculatum, amblyomma tuberculatum, aponomma latum, boophilus annulatus, boophilus microplus, dermacentor albipictus, dermacentor variablis, haemaphysalis leporispalustris, ixodes affinis, ixodes brunneus, ixodes cookei, ixodes marxi, ixodes minor, ixodes scapularis, ixodes texanus, ixodes woodi, rhipicephalus sanguineus, and ornithodoros capensis. ixodes woodi is recorded from south ...199910672552
prevalence of lyme disease borrelia spp. in ticks from migratory birds on the japanese mainland.borrelia sp. prevalence in ticks on migratory birds was surveyed in central japan. in autumn, a total of 1,733 birds representing 40 species were examined for ticks. a total of 361 ticks were obtained from 173 birds of 15 species, and these ticks were immature haemaphysalis flava (94.4%), haemaphysalis longicornis, ixodes columnae, ixodes persulcatus, ixodes turdus, and an unidentified ixodes species. of these, 27 juveniles of h. flava on turdus pallidus, turdus cardis, or emberiza spodocephala, ...200010698761
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