| rapid quantitative assessment of theileria infection in ticks. | a simplified method for methyl green pyronin staining is described for theileria parva and t. annulata in whole salivary glands of rhipicephalus appendiculatus and hyalomma anatolicum subspecies respectively. the stain gives results comparable with feulgen staining and can be used after the ticks have been in cold storage for 3 days. there is considerable variability in the rate and intensity of infection of these ticks with theilerial parasites and it is concluded that the method permits large ... | 1979 | 87045 |
| [light microscopic studies on the development of theileria annulata (dschunkowsky and luhs, 1904) in hyalomma anatolicum excavatum (koch, 1844). ii. the development in haemolymph and salivary glands (author's transl)]. | fully differentiated kinetes, average length 17.6 micrometer, appeared in the haemolymph of engorged nymphs usually 17 to 20 days after repletion. kinetes were observed at first in the salivary glands on day 18 after repletion. the kinetes then transformed into fission bodies of about 10 micrometer in diameter, mainly in type iii alveoli and less frequently in type ii alveoli. the fission bodies grew up to a size of about 20 micrometer after several divisions of their nucleus. at this time the t ... | 1978 | 99896 |
| infectivity of ground-up tick supernates prepared from theilerai annulata infected hyalomma anatolicum anatolicum. | groups of theileria annulata infected hyalomma anatolicum anatolicum adults prefed on a calf for 1 to 6 days were separately ground in tissue culture medium-199, supplemented with bovine albumin powder, fraction-v. supernatant fluid was collected, made up with additional medium, so that each millilitre represented material from 25 ticks, and was injected subcutaneously into groups of cross-bred male calves. the results indicated that ground-up tick supernate (guts) prepared from unfed ticks was ... | 1979 | 111383 |
| immunization against bovine tropical theileriosis, using 60co-irradiated infective particles of theileria annulata (dschunkowsky and luhs 1904) derived from ticks. | portions of ground supernate material from theileria annulata-infected and prefed adults of the hyalomma anatolicum anatolicum were irridiated by 60co source at 0, 3, 5, 6, 7, or 9 krads. these portions were injected subcutaneously into different groups of cross-bred calves. the calves injected with 0-, 3-, or 5-krad irradiated tick supernate had severe reactions (rectal temperature 39.8 to 41.6 c, two- to fourfold enlargement of prescapular lymph gland, mean peak parasitemia 27.3% to 32.5% infe ... | 1979 | 112890 |
| the production of nymphs of hyalomma anatolicum anatolicum for experimental infection with theileria annulata. | methods are described for the production of nymphs of hyalomma anatolicum anatolicum for later use in transmission experiments with theileria annulata where the timing of the application of nymphs to infected cattle needs to be accurately controlled. larvae are fed on the torsos of rabbits where approximately 98% undergo a two-host feeding cycle. this cycle is interrupted 2 days after the first larvae moult into nymphs by killing the rabbits and the nymphs are then collected with a suction pump. ... | 1979 | 116404 |
| electron microscopic studies of the development of kinetes in theileria annulata dschunkowsky & luhs, 1904 (sporozoa, piroplasmea). | gamogony of theileria annulata dschunkowsky & luhs occurs within the intestine of nymphs of the tick hyalomma anatolicum excavatum koch. after the 5th day post repletionem (p.r.) of the ticks spherical and ovoid parasites were found within the intestinal cells. these stages were thought to represent fertilized macrogametes. these underwent a transformation process leading ultimately to the differentiation of a motile stage, the kinete, which leaves the intestinal cells on the 14th-17th day p.r. ... | 1977 | 407352 |
| [circadian rhythm of the dropping of engorged larvae in 2 species of ixodid ticks (ixodidae) and its photoperiodic entrainment]. | daily rhythm of detachment of engorged larvae of ixodes ricinus l. and hyalomma anatolicum koch is regulated by photoperiod. in photoperiodic conditions (16--20 hours of light p. d.) the maximum of detachment in h. anatolicum occurs at the beginning of photophase (the first 4--8 hours), but in i. ricinus it occurs at the second part of photo-phase (12--16 hours after the light is on). the rhythm of detachment is regulated according to the processes of endogenous circadian nature which are mainta ... | 1979 | 440776 |
| on the life cycle of theileria annulata (dschunkowsky and luhs, 1904) in the midgut and hemolymph of hyalomma anatolicum excavatum (koch, 1844). | | 1975 | 810989 |
| studies on the development of theileria annulata dschunskowsky and luhs, 1904 in the tick--hyalomma anatolicum anatolicum koch, 1844. | the endogenous development of theileria annulata in the vector tick--hyalomma anatolicum anatolicum has been described. parasites within and outside the erythrocytes were seen in the gut contents of larvae and nymphs immediately after their removal from the infected cattle but not after 24 hours. two bodies resembling the intra-erythrocytic stage of the parasite, lying close to each other were seen near the gut epithelium of a larva on the 4th day of its dropping off the infected host. neither m ... | 1975 | 813551 |
| [light microscopic studies on the development of theileria annulata (dschunkowsky and luhs, 1904) in hyalomma anatolicum excavatum (koch, 1844). i. the development in the gut of engorged nymphs (author's transl)]. | a laboratory strain of h. a. excavatum was selected on high susceptibility for t. annulata through several generations. giemsa-stained smears and wet smears of gut and gut content were studied. after engorgement of erythrocytic stages of t. annulata by the nymphs the following development was observed: 1. erythrocytic merozoites developed to slender, spindleshaped "microgamonts" in the gut 24 to 96 hours after repletion (p. repl.). spherical stages with a conspicuous spike developed at the same ... | 1975 | 814732 |
| [electron microscope studies on development stages of theileria annulata (dschunkowsky, luhs, 1904) in the intestine and haemolymph of hyalomma anatolicum excavatum (koch, 1844) (author's transl)]. | for the first time developmental stages of theileria within the intestine and haemolymph of ticks were studied by electron microscopy. on the 1st-6th day post repletionem the intestine of the ticks contained humerous tages, which were very similar to microgamonts and microgametes of haemosporidia. later, on the 14th-19th day p.r. ookinete-like stages ere found in the haemolymph of ticks. from these results it seemed likely that gamogony of theileria takes place in the intestine of ticks. in more ... | 1975 | 814733 |
| [the antibacterial effect of organs and tissues of hyalomma dromedarii, hyalomma anatolicum and ixodes persulcatus ticks]. | | 1975 | 815775 |
| application of the indirect fluorescent antibody test for diagnosis of theileria hirci infection of sheep: using cell culture schizont antigen. | the indirect fluorescent antibody test was applied for detection of circulating antibodies in sheep as a result of theileria hirci infections. a schizont antigen was prepared from an in vitro culture suspension of lymphoid cells infected with t. hirci macroschizonts. the peak antibody titre of 1/8, 192 was reached 24 days after the initial antibody rise in the sheep experimentally infected by means of hyalomma anatolicum anatolicum ticks. | 1976 | 820024 |
| [electron microscope studies on developmental stages of theileria parva (theiler, 1904) in the intestine of the tick hyalomma anatolicum excavatum (koch, 1844) (author's transl)]. | the developmental stages of theileria parva within the intestine of ticks were studied by electron microscopy. on the 2nd-4th day post repletionem (p.r.) the intestine of the ticks contained numerous stages, which were very similar to microgamonts and microgametes of haemosporidia. from these results it seemed likely that gamogony of theileria parva takes place in the intestine of ticks, too. the microgamont-like stages were spear-head-like; they measured about 10.5 mum in length with a maximum ... | 1976 | 821188 |
| possibilities of persistence in new biotopes of ticks imported by birds. | survival and development of 6 tick species (hyalomma anatolicum, rhipicephalus sanguineus, haemaphysalis punctata, dermacentor marginatus, d. reticulatus and ixodes ricinus) were studied in 3 groups differing in the range of distribution with respect to the place of importation, as a model for the knowledge of their possible inclusion in the new local biocenosis during transportation by natural hosts. | 1977 | 852771 |
| [invasiveness and developmental forms of 3 babesia species and piroplasmids (piroplasmida) in the eggs of ixodid ticks]. | the paper presents the materials on the identification and study of the developmental forms and morphology of b. colchica and p. bigeminum in eggs of hyalomma anatolicum. the description of developmental forms of b. colchica in eggs of boophilus calcaratus is given for the first time. p. bigeminum and p. beliceri were detected in eggs of b. calcaratus and h. anatolicum from the first day of egg production up to the emergence of larvae while b. colchica was found beginning from the 4th-5th day of ... | 1977 | 896264 |
| immunisation against bovine tropical theileriasis (theileria annulata infection). | fully susceptible cross-bred calves, six to nine months of age, were immunised by tick-induced theileria annulata infection treated with chlortetracycline at 16 mg/kg body weight for four, eight or 16 days. the infections were induced with 10 ticks (hyalomma anatolicum anatolicum) or 30 ticks (h dromedarii). the recovered calves were tested for immunity to homologous severe challenge, 50 or 73 days after the first infection. the reaction of the calves to infections was evaluated by noting the pr ... | 1976 | 968181 |
| effects of 60co irradiation of the early developmental stages of an ixodid tick, hyalomma anatolicum. | various developmental stages of hyalomma anatolicum were subjected to a range of doses of 60co radiation from 0-10 000 r, and their subsequent development was observed. some of these ticks were infected with theileria annulata. doses of 2000 r and over prevented all but a very limited development of ticks. after 1000 r a proportion of exposed individuals continued development in a near-normal manner. lower doses had proportionately less effect. 1000 r to ticks infected with t. annulata failed to ... | 1976 | 1083381 |
| effects of 60co irradiation on unfed adults and engorged females of the tick hyalomma anatolicum. | unfed and engorged adults of the cattle tick hyalomma anatolicum, known to be biological vector of theileria anmulata in india, were exposed to various levels of gamma-radiation from 0-60 000 r, and the effect on engorgement and redproduction was observed. the radiation tolerance limit for unfed adults is 1000 r for engorgement and reproduction. the sterilizing dose for most of the males is 2000 r but the females can tolerate a slightly higher dose. engorged females have a tolerance limit of 10 ... | 1976 | 1083846 |
| transstadial transmission of theileria annulata through common ixodid ticks infesting indian cattle. | transstadial transmission of theileria annulata with hyalomma anatolicum anatolicum, h. dromedarii and h. marginatum isaaci, and haemaphysalis bispinosa, rhipicephalus haemaphysaloides haemaphysaloides and boophilus microplus was determined. it was found that the infection was successfully transmitted by h. a. anatolicum from larva to nymph and nymph to adult in all attempts. when larvae were fed on an infected calf the succeeding adults transmitted the infection when the intervening nymphs fed ... | 1975 | 1178216 |
| effects of immunization of rabbits on establishment, survival, and reproductive biology of the tick hyalomma anatolicum anatolicum. | four antigenic preparations, viz. salivary gland antigen (sg ag), whole tick extract antigen (wte ag) and 30,000-g supernatant fraction, and pellet of wte ag (tes ag and tep ag, respectively), were made from partially fed adult female hyalomma anatolicum anatolicum. four groups of 5 rabbits each were immunized with the antigens, and a fifth group was kept as control. following challenge with adult h. a. anatolicum, a significant decrease in engorgement weight and egg mass weight and an increase ... | 1992 | 1738073 |
| effect of temperature on transtadial transmission of theileria annulata in hyalomma anatolicum anatolicum ticks. | the effect of temperature on the transtadial transmission of theileria annulata in hyalomma anatolicum anatolicum was studied. variation in temperature (4-40 degrees c) had a significant effect on moulting rate of the ticks and transmission of theilerial parasites from nymphs to resultant adults. the temperatures above 40 degrees c and below 12 degrees c prevented moulting. maximum infection levels were obtained in salivary glands of adult ticks when the infected engorged nymphs were incubated a ... | 1991 | 1763485 |
| attempted immunisation of crossbred calves (bos taurus x bos indicus) by repeated natural attachment of ticks hyalomma anatolicum anatolicum koch (1844). | crossbred calves (bos taurus x bos indicus) were repeatedly infested with the ixodid tick, hyalomma anatolicum anatolicum. the parameters of engorgement, pre-oviposition period, oviposition period, engorged weight, egg batch weight, and per cent hatch of eggs all showed statistically significant differences between first to tenth infestation. only the time to engorgement did not change. it is concluded that repeated infestations of this tick stimulate acquired resistance. | 1991 | 1796526 |
| the effects of bovine tick resistance on the susceptibility of hyalomma anatolicum anatolicum to infection with theileria annulata (ankara). | two bos taurus calves were made resistant to tick infestation by exposing them to approximately 500 rabbit-reared nymphs of hyalomma anatolicum anatolicum twice at a 2-week interval. these two calves, together with a tick-susceptible control calf, were inoculated with a stabilate of theileria annulata (ankara). patent infection resulted in all three calves. seven-hundred and fifty gerbil-reared nymphs were then applied on each of these calves as well as another tick-susceptible calf that was the ... | 1990 | 2107619 |
| immunization of cattle (bos indicus x bos taurus) against hyalomma anatolicum anatolicum using antigens derived from tick salivary gland extracts. | studies were conducted on 41 cross-bred (bos taurus x bos indicus) calves which were less than 1 year old. three types of salivary gland antigens (sg ag) viz. sg ag-i (whole), sg ag-ii (supernatant) and sg ag-iii (sediment), prepared from the ixodid tick, hyalomma anatolicum anatolicum, were used for immunizing these calves. the calves were divided into five groups. the first three groups were immunized with sg ag-i, -ii and -iii with freund's complete adjuvant (fca), respectively. the fourth gr ... | 1990 | 2276870 |
| chemoimmunoprophylaxis against bovine tropical theileriosis in young calves: a comparison between buparvaquone and long-acting oxytetracycline. | eighteen seven to 21-day-old crossbred (bos taurus cross bos indicus) calves were allocated to four groups (a to d). groups a and b each consisted of six calves and groups c and d three calves each. each calf in groups a, b and c was inoculated with ground-up tick supernate (guts) equivalent to two infected acini prepared from theileria annulata-infected hyalomma anatolicum anatolicum. each calf in group a was also given a single intramuscular injection of buparvaquone, 2.5 mg kg-1 bodyweight si ... | 1990 | 2382047 |
| relative role of male and female hyalomma anatolicum anatolicum ticks in theileria transmission. | the relative role of male and female hyalomma anatolicum anatolicum ticks in the epidemiology of theileria transmission was studied by detecting theileria sporozoites in the dissected salivary glands of 568 ticks by the methyl green pyronin staining method. detailed frequency distribution of theileria-positive acini in the salivary glands of the 264 (46.48%) positive ticks from a field collection in haryana indicated that the number of infected salivary acini per positive tick was greater in fem ... | 1989 | 2499092 |
| relationship between the resistance of crossbred cattle to ticks, boophilus microplus (canestrini, 1887) and hyalomma anatolicum anatolicum (koch, 1844). | studies were undertaken to determine the effect of repeated pure infestations with boophilus microplus on susceptibility to subsequent pure infestations with hyalomma anatolicum anatolicum, and the effects of pure infestations with both species of tick on susceptibility to a series of mixed infestations. crossbred (bos indicus x bos taurus) calves were infested with boophilus microplus (17 times), h. a. anatolicum (four times), followed by five mixed infestations of b. microplus and h. a. anatol ... | 1989 | 2763448 |
| metabolic energy pathways in theileria annulata sporozoites and their significance in sporozoite-bovine lymphocyte interactions in vitro. | the existence of metabolic energy pathways has been studied in extracellular t. annulata sporozoites using chemicals known to inhibit specific energy-generating pathways, and their role during invasion of bovine peripheral blood lymphocytes (pbl) by the sporozoites determined in an in vitro system. an inverse relationship was depicted between the dose of various chemicals and the number of t. annulata sporozoites invading pbl: as the concentrations of the inhibitor drugs increased, the number of ... | 1985 | 2986342 |
| stage-specific antigenicity in theileria annulata: a case report. | blood from sick cattle in bahrain transmitted piroplasms of theileria annulata to a splenectomized calf. larvae of hyalomma anatolicum anatolicum were infected on the calf and, after moulting, induced clinical theileriosis, associated with numerous schizonts, in the same calf. the animal was cured by specific treatment. antigenic differences thus shown between piroplasms on the one hand, and sporozoites and schizonts on the other hand, were confirmed in the indirect fluorescent antibody test, as ... | 1986 | 3083573 |
| evaluation of purified theileria annulata sporozoite antigen from the tick hyalomma anatolicum anatolicum. | rabbits immunized with purified sporozoites from hyalomma anatolicum anatolicum produced antibody to theileria annulata specific antigens as measured by the indirect fluorescent antibody test. nonspecific fluorescence which compounded the interpretation of the test was observed. incorporation of eriochrome black and evans blue as a counterstain in the diluent buffer for the conjugate significantly reduced the background fluorescence. | 1986 | 3097915 |
| immunization of neonatal bovines against theileria annulata by an infection and treatment method. | sixty three cross-bred (bos taurus x bos indicus) 4-5-day-old calves were divided into 16 groups (a-p). each calf in groups a and b was given ground-up-tick supernate prepared from theileria annulata-infected or non-infected hyalomma anatolicum anatolicum (guts) equivalent to 5 ticks (50 infected acini). groups d and e received infected guts equivalent to 2 ticks (20 infected acini) and groups g and h were given infected guts equivalent to 1 tick (10 infected acini). each calf in groups j, k and ... | 1987 | 3113041 |
| the salivary glands of hyalomma anatolicum anatolicum: nature of salivary gland components and their role in tick attachment and feeding. | | 1988 | 3366541 |
| treatment of experimentally induced theileria annulata infection in cross-bred calves with buparvaquone. | twenty cross-bred (bos taurus x bos indicus) calves, 7-21 days old, were infected by a ground-up tick supernate of hyalomma anatolicum anatolicum infected with the hisar isolate of theileria annulata. six calves acted as untreated controls and they all died of theileriosis within 17 days of infection. the remaining 14 calves were divided into group a and b, each consisting of seven calves. all the calves of groups a and b were treated intramuscularly with buparvaquone (bw 720c) on day 11 post-in ... | 1988 | 3369076 |
| ticks parasitising the indian buffalo (bubalus bubalis) and their possible role in disease transmission. | a total of 13 ixodid tick species, boophilus microplus, haemaphysalis bispinosa, haemaphysalis cornupunctata, haemaphysalis himalaya, heamaphysalis montgomeryi, hyalomma anatolicum anatolicum, hyalomma dromedarii, hyalomma marginatum isaaci, hyalomma (hyalommina) brevipunctata, hyalomma (hyalommina) hussaini, nosomma monstrosum, rhipicephalus haemaphysaloides, and r. turanicus were collected off 424 buffaloes from the northwestern states of india. ten tick species, amblyomma testudinarium, b. mi ... | 1988 | 3369083 |
| water vapour uptake from subsaturated atmospheres by engorged immature ixodid ticks. | contrary to current opinion, fully engorged and detached larvae and nymphs of some ixodid ticks consistently take up substantial amounts of atmospheric water vapour and thereby display their regulative capacity for maintaining water balance in subsaturated air. net uptake of vapour generally begins some days after detachment and the capability persists until shortly after initiation of apolysis, a period which in diapausing specimens may extend up to several months. this was shown for ixodes ric ... | 1988 | 3378463 |
| the infection of various tick species with babesia bigemina, its transmission and identification. | strains of boophilus decoloratus and b. microplus were easily infected with a single stock of babesia bigemina; boophilus annulatus could be infected less easily, and it was difficult to infect rhipicephalus evertsi. two strains of r. appendiculatus and one strain each of r. bursa and hyalomma anatolicum excavatum were refractory. the same stock of b. bigemina was transmitted by nymphs and adults of b. decoloratus but only by nymphs of r. evertsi. vertical infection was not observed in r. everts ... | 1988 | 3387405 |
| isolation and characterization of salivary antigens from hyalomma anatolicum anatolicum. | this study demonstrates the involvement of a large number of salivary proteins in the acquisition of resistance to hyalomma anatolicum anatolicum. using immunoblotting, sera from hypersensitized rabbits were shown to react with nine proteins in the saliva and 17 in salivary gland extracts (sge) from 96 h fed female ticks. the salivary antigens had molecular weights in the range of 14 400 to 130 000. all the antigens identified in the saliva and 12 of the sge antigens were glycoprotein in nature ... | 1986 | 3515295 |
| hyalomma anatolicum anatolicum: the role of humoral factors in the acquisition of host resistance. | a significant degree of resistance to hyalomma anatolicum anatolicum can be adoptively transferred to naive recipients with immune serum from rabbits repeatedly infected with adult h. a. anatolicum. ticks fed on recipients of immune serum took longer to become engorged and showed a significant decrease (p less than 0.01) in engorgement weight and oviposition compared with ticks that fed on recipients of normal serum. a direct correlation between resistance and anti-saliva igg antibodies was indi ... | 1987 | 3678448 |
| kinetics of mast cell, basophil and eosinophil populations at hyalomma anatolicum anatolicum feeding sites on cattle and the acquisition of resistance. | the cutaneous cellular reactions associated with acquisition of resistance by cattle to hyalomma anatolicum anatolicum feeding were investigated by comparing the nature and sequence of cellular events at h.a. anatolicum feeding sites following primary and tertiary infestations. cattle acquired resistance to h.a. anatolicum feedings after a single infestation. the resistance was manifested by a significant reduction in the mean weight of engorged females and mean weight of egg mass produced, fail ... | 1986 | 3785971 |
| treatment of theileria annulata infection in calves with parvaquone. | fifteen calves were infected by the injection of stabilate of a suspension of hyalomma anatolicum anatolicum ticks infected with the ankara strain of theileria annulata. three were kept untreated, as controls, and they all died of theileriosis. three groups of four calves were treated intramuscularly with parvaquone (clexon; wellcome) when early signs of theileriosis were clinically apparent. one group received 20 mg (kg bodyweight)-1 of parvaquone 10 days after infection. two of these calves we ... | 1985 | 3929345 |
| the maintenance and survival of theileria annulata in colonies of hyalomma anatolicum anatolicum. | procedures are described for the colonization of hyalomma anatolicum anatolicum ticks using gerbils, rabbits and cattle as hosts. on rabbits h. a. anatolicum undergoes a two-host cycle but methods are described for obtaining either unfed or engorged nymphs. data are given on the life cycle timings and the numbers and timings of tick feeding regimes. the infection of h. a. anatolicum with two strains of theileria annulata is described and methods given for monitoring the development and survival ... | 1985 | 3938203 |
| transmission of a trypanosoma sp. to cattle by the tick hyalomma anatolicum anatolicum. | hyalomma anatolicum anatolicum engorged nymphs and flat adults were collected from two areas in northern sudan. various developing stages of trypanosoma theileri-like flagellates were observed in the engorged nymphs, freshly moulted adults and mature adults partially engorged on rabbits. when these ticks were applied to two calves, one calf became infected with the trypanosome. the parasites were observed for one day in the enlarged lymph node nearest to the tick-feeding site 5 days after the ti ... | 1986 | 3962154 |
| differential cellular responses at hyalomma anatolicum anatolicum feeding sites on susceptible and tick-resistant rabbits. | the sequential, quantitative histological analysis of adult hyalomma anatolicum anatolicum feeding sites on rabbits showed that the cellular reactions at tick feeding sites change in character and magnitude with time after attachment, and differ considerably from primary infestation to tertiary infestation. neutrophils (62-68%) followed by mononuclear cells (22-24%) were the major component of the cellular infiltrate throughout primary infestation. eosinophils accounted for 10% of the cellular i ... | 1985 | 4080422 |
| [development of theileria annulata in the tick hyalomma anatolicum]. | | 1971 | 5003496 |
| the quantity of blood imbibed by hyalomma anatolicum anatolicum koch, 1844 (ixodoidea, ixodidae). | | 1970 | 5437766 |
| [transovarian transmission of blood parasites by the tick hyalomma anatolicum]. | | 1970 | 5529612 |
| ultrastructural demonstration of succinic dehydrogenase and cytochrome oxidase activity in sporozoites of babesia ovis and theileria annulata (apicomplexa: piroplasmea) in salivary glands of tick vectors (rhipicephalus bursa, hyalomma anatolicum excavatum). | salivary gland stages ("sporozoites") of babesia ovis and theileria annulata (apicomplexa: piroplasmea) in female ixodid ticks were studied for ultracytochemical activity of the respiratory enzymes, succinic dehydrogenase (sdh), and cytochrome oxidase. both sdh and cytochrome oxidase were demonstrated in the sporozoites and the mitochondria in these stages. identified in this way the final reaction product of sdh was located mainly at the inner side of the mitochondrial boundary, though it was a ... | 1980 | 6260921 |
| natural infection rates of hyalomma anatolicum anatolicum with theileria in sudan. | hyalomma anatolicum anatolicum ticks were collected around cattle pens at two locations close to khartoum. they were assessed for theileria infection by four methods. salivary glands were stained whole with methyl green pyronin and examined for parasite masses. adult ticks were partially fed on rabbits, ground up in medium, and the suspensions were examined in giemsa stained smears and by inoculation into bovine lymphocyte cultures. ticks were fully fed on calves which were monitored for develop ... | 1983 | 6414066 |
| the maturation of theileria annulata in hyalomma anatolicum anatolicum stimulated by incubation or feeding to produce sporozoites. | adult hyalomma anatolicum anatolicum ticks infected with theileria annulata (hissar strain) were incubated at 36 degrees c or fed on rabbits. tick salivary glands were stained whole with methyl green pyronin or ground up and deposited on microscope slides and stained with giemsa's solution. separate batches of ticks from both treatments were ground up, centrifuged and filtered to produce sporozoite suspensions. the suspensions were examined as deposits on microscope slides stained with giemsa's ... | 1983 | 6414152 |
| the development of theileria annulata in the salivary glands of the vector tick hyalomma anatolicum anatolicum. | the development at 28 degrees c of theileria annulata (hissar) in the salivary glands of its tick vector, hyalomma anatolicum anatolicum, was studied using giemsa-stained smears, methyl green-pyronin-stained preparations of whole glands, and electron microscopy. nymphs which had engorged on t. annulata-infected calves showed kinetes in the haemolymph from day 7 to day 14 post engorgement, when all ticks had completed moult. intracellular sporonts were observed within salivary gland acini from da ... | 1984 | 6433817 |
| [isolation of the sindbis virus from hyalomma anatolicum cl kock 1844 ticks in tadzhikistan]. | | 1981 | 6454830 |
| ultrastructural study on the development of babesia equi (coccidia: piroplasmia) in the salivary glands of its vector ticks. | the formation of babesia equi sporozoites in the salivary glands of three tick species (hyalomma anatolicum anatolicum, h. a. excavatum, rhipicephalus turanicus) was studied by electron microscopy. the development was identical in all three vectors. on the 8th day post repletionem kinetes of b. equi had invaded alveoli of the nymphal salivary glands and were transformed to sporonts bounded by a single membrane. the sporonts were polymorphous bodies each with a highly lobed nucleus and numerous m ... | 1983 | 6631774 |
| protection of cattle against theileria annulata infection using corynebacterium parvum. | four groups of calves (a, b, c and d) each consisting of five calves were used for the present study. group a calves were given corynebacterium parvum alone. group b calves were inoculated with inactivated ground-up-tick supernate (guts) prepared from hyalomma anatolicum anatolicum infected with theileria annulata plus c. parvum. group c received only inactivated guts. all the surviving calves of groups a to c were exposed on day 45 post-inoculation to a lethal tick challenge along with suscepti ... | 1983 | 6649060 |
| identification of theileria infections in the salivary glands of hyalomma anatolicum anatoli cum and rhipicephalus appendiculatus using isoenzyme electrophoresis. | lysates prepared from the salivary glands of uninfected hyalomma anatolicum anatolicum and rhipicephalus appendiculatus and from ticks of these species infected with 2 strains of theileria annulata and 1 strain of t. parva respectively have been examined for enzyme polymorphism using thin layer starch gel electrophoresis. representative enzymes from 3 of the major metabolic pathways, the tricarboxylic acid cycle, the glycolytic pathway and the pentose phosphate pathway were investigated. only 1 ... | 1981 | 6785914 |
| theileria annulata and babesia ovis: ultracytochemical lactic dehydrogenase activity of sporozoites in salivary glands of female ticks, hyalomma anatolicum excavatum and rhipicephalus bursa. | | 1982 | 6806115 |
| [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 |
| mass-rearing devices for hyalomma anatolicum excavatum (acari: ixodidae) on calves and rodents exposed to whole-body infestation. | | 1982 | 7120298 |
| hyalomma anatolicum anatolicum (koch, 1844) as a possible vector for transmission of trypanosoma theileri, laveran, 1902 in cattle. | amastigotes, sphaeromastigotes, epimastigotes and trypomastigotes of trypanosoma theileri, laveran, 1902 have been observed in the nymphs and adults of hyalomma anatolicum anatolicum (koch, 1844). there ticks were obtained from engorged larvae and nymphs collected from a cross-bred bull with detectable parasitaemia. infection with t. theileri was established in two 6-8-month old cross-bred calves by subcutaneous inoculation of trypanosomatid flagellates collected from ticks and by feeding of the ... | 1981 | 7201190 |
| theileria annulata infection in neonatal bovine calves. | on an organized farm in india, 70 out of 79 cows expected to calve within 30 days revealed the presence of theileria annulata schizonts and/or piroplasms in their peripheral blood. similarly, 33 out of 59 calves borne to the above cows also exhibited t. annulata schizonts on day less than 1 to day 19 post partum. the cows and calves were free from hyalomma anatolicum, an established vector of t. annulata, during the course of study in the winter months, when the activity of ticks is reduced to t ... | 1994 | 7810406 |
| seasonal distribution of theileria in hyalomma anatolicum anatolicum ticks of an endemic area of haryana, india. | the effect of season on the capacity of hyalomma anatolicum anatolicum ticks to transmit theileria was studied by detecting theileria sporoblasts in the salivary glands of 647 adult ticks moulted in winter (november 1990 to march 1991) and 677 adult ticks moulted in the summer-rainy season (june to august 1991). the intensity (number of infected acini per infected tick) and abundance (number of infected acini per tick examined) of theileria sporoblasts were significantly (p < 0.05) higher in win ... | 1994 | 7900223 |
| 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) ... | 1996 | 8746133 |
| enhanced immunity to hyalomma anatolicum anatolicum ticks in cross-bred (bos indicus x bos taurus) calves using ascaris extract immunomodulator with the tick salivary gland extract antigens. | development of acquired immunity in cross-bred (bos indicus x bos taurus) calves against hyalomma anatolicum anatolicum, a tick vector of bovine tropical theileriosis was studied using ascaris extract (ae), an immunomodulator of ige responses, along with the tick salivary gland extract (sge) antigens in freund's incomplete adjuvant (fia) emulsion. calves immunised with sge + fia showed significant rejection (47.4 +/- 2.8%) of larvae, whereas only marginal rejection (12.47 +/- 1.5%) of nymphs was ... | 1996 | 8792570 |
| immunological cross-reactivity between salivary gland proteins of hyalomma anatolicum anatolicum and boophilus microplus ticks. | immunological cross-reactivity was established between salivary gland extract antigens of hyalomma anatolicum anatolicum (h.a.a) and boophilus microplus (b.m.), using native-polyacrylamide gel electrophoresis (native-page), immunoblotting, dot-enzyme immunoassay (dot-eia) and in vivo intra-dermal skin test revealing immediate type hypersensitivity swelling reaction. native-page revealed six proteins in common of molecular weights of 60, 66, 148, 264, 300 and > 300 kda in the salivary gland extra ... | 1996 | 8792571 |
| 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 ... | 1997 | 9530692 |
| contact toxicity of permethrin-impregnated fabric to hyalomma anatolicum excavatum (acari: ixodidae): effects of laundering and exposure and recovery times. | a previous study that documented enhanced host attachment by the camel ticks hyalomma dromedarii koch after permethrin exposure prompted a similar investigation of permethrin effects in h. anatolicum excavatum koch, an old world hardbacked tick suspected of vectoring human pathogens. contact toxicity tests were conducted with laboratory-colonized male and female h. a. excavatum of the same age exposed for periods of 5, 10, 30, and 60 min to each of 5 fabric treatments: unwashed/untreated; unwash ... | 1998 | 9615556 |
| bovine babesiosis. seroprevalence and ticks associated with cattle from two different regions of morocco. | a total of 475 bovine sera collected in 1995-1996 from 10 areas belonging to two different bioclimatic strata were tested for antibody activity to babesia bigemina and babesia bovis using indirect immunofluorescence (iif). in the gharb, the b. bovis seroprevalence was 21.7% and for b. bigemina, 10.8%. the infection rate for either or both species as determined microscopically with giemsa-stained blood films was 18.9%. the tiflet area was considered an endemic focus, and the seroprevalence was 42 ... | 1998 | 9668467 |
| immunization of cattle with nymphal hyalomma anatolicum anatolicum extracts: effects on tick biology. | antigens derived from partially engorged nymphs of hyalomma anatolicum anatolicum were used in immunizing crossbred (bos indicus x bos taurus) cattle against larval, nymphal and adult h. a. anatolicum and h. dromedarii. the cattle were either infected with theileria annulata at low parasitaemia or were uninfected. whole nymphal extract (wne), nymphal membrane antigens (nma) and nymphal soluble antigens (nsa) were used for immunization. the group immunized with wne showed significant and better r ... | 1998 | 9719836 |
| immunization of rabbits against hyalomma anatolicum anatolicum using homogenates from unfed immature ticks. | antigens were prepared from unfed larvae and nymphs of h. a. anatolicum as homogenised antigens (hlag and hnag, respectively). five rabbits each were inoculated, s.c. with 8.56 mg hlag and 9.34 mg hnag in 3 divided doses. following immunisation rabbits developed significant level of protective immunity to infestation with adults of this species. significant reduction in engorged percentage and weights of engorged females and egg masses were observed in females fed on immunized rabbits, compared ... | 1998 | 9754046 |
| theileria lestoquardi--maturation and quantification in hyalomma anatolicum anatolicum ticks. | the maturation and quantification of theileria lestoquardi (t. hirci) parasites in unfed and partially fed adult hyalomma anatolicum anatolicum ticks was studied using (1) methyl green pyronin (mgp) staining of salivary glands, (2) in vitro infection of peripheral blood mononuclear cells (pbm) with parasites harvested from infected ticks and (3) a semi-quantitative polymerase chain reaction (pcr). with mgp staining the greatest infection rate was seen in unfed ticks. feeding resulted in a gradua ... | 1998 | 9774791 |
| effects of experimentally induced theileria annulata infection on the pharmacokinetics of oxytetracycline in cross-bred calves. | the effects of an experimental theileria annulata infection on the intravenous (10 mg kg-1) pharmacokinetics of oxytetracycline (otc) were investigated in crossbred calves. the serum concentration-time curve of oxytetracycline before and after the experimental infection was best described by an open two-compartment model. the experimental infection was induced by a subcutaneous administration of ground-up tick supernate (guts) equivalent to 30 hyalomma anatolicum anatolicum ticks infected with t ... | 1999 | 10081114 |
| simultaneous detection of bovine theileria and babesia species by reverse line blot hybridization. | a reverse line blot (rlb) assay was developed for the identification of cattle carrying different species of theileria and babesia simultaneously. we included theileria annulata, t. parva, t. mutans, t. taurotragi, and t. velifera in the assay, as well as parasites belonging to the t. sergenti-t. buffeli-t. orientalis group. the babesia species included were babesia bovis, b. bigemina, and b. divergens. the assay employs one set of primers for specific amplification of the rrna gene v4 hypervari ... | 1999 | 10325324 |
| infectivity and cross-immunity studies of theileria lestoquardi and theileria annulata in sheep and cattle: i. in vivo responses. | in a series of experiments, sporozoite stabilates of a theileria lestoquardi (lahr) and a t. annulata (ankara) stock prepared from hyalomma anatolicum anatolicum ticks, were used to examine the infectivity of both parasite species for sheep and cattle and to study the development of cross-immunity between these parasite species. in the first experiment sheep and cattle were inoculated with t. lestoquardi sporozoites. surviving animals and naive sheep and cattle were, in the second experiment, in ... | 1999 | 10348097 |
| arthropod parasites of nubian ibexes (capra ibex nubiana) and gazelles (gazella gazella) in israel. | in a 20-year survey the following ectoparasites were collected from nubian ibexes: larvae of an unidentified oestrus sp. collected from the nasal cavities, sinuses and horns, hippoboscid flies (lipoptena chalcomelaena) specific to the nubian ibex, blood sucking lice (linognathus africanus) and unidentified biting lice (damalinia sp.). ibexes were severely infested with the cattle tick, boophilus annulatus; a few hyalomma anatolicum excavatum ticks were also collected. in five ibexes kept in two ... | 1999 | 10392972 |
| lack of immunological cross-reactivity of 36-kda secretory salivary gland antigen of hyalomma anatolicum anatolicum with hyalomma dromedarii and boophilus microplus ticks. | during feeding of ticks of the species hyalomma anatolicum anatolicum, most of the proteins in salivary gland extracts (sges) remained unchanged from the unfed to the fully fed state (from day 1 to day 7 of the experiment), as revealed by sds-page. however, a 45-kda protein band disappeared and 26-, 32- and 33-kda bands appeared when feeding commenced. some of the protein bands changed their intensity. when probed with anti-h. anatolicum anatolicum hyperimmune sera, transblotted sge proteins of ... | 1999 | 10481624 |
| cross-bred cattle protected against hyalomma anatolicum anatolicum by larval antigens purified by immunoaffinity chromatography. | antigens from larvae of hyalomma anatolicum anatolicum were extracted and purified by immunoaffinity chromatography using immunoglobulin ligands from cross-bred animals immunized with soluble larval antigen. affinity-purified antigen (aff-tle) and a total larval extract (tle) were used to immunize cross-bred (bos indicus x bos taurus) cattle. the group immunized with aff-tle rejected 71.6% of larvae and 77.3% of nymphs. however, the rejection percentages were lower in the tle-immunized group. no ... | 1999 | 10509419 |
| influence of experimentally induced theileriosis (theileria annulata) on the pharmacokinetics of a long-acting formulation of oxytetracycline (otc-la) in calves. | the effects of experimental theileria annulata infection on the i.m. (20 mg/kg) pharmacokinetics of oxytetracycline were investigated in crossbred calves. the serum concentration-time curves of oxytetracycline (otc-la), before and after experimental infection, were best described by a one-compartment open model. the experimental infection by subcutaneous administration of ground-up tick supernate (guts), equivalent to 30 hyalomma anatolicum anatolicum ticks infected with theileria annulata, prod ... | 1999 | 10597536 |
| immunization of cattle against hyalomma anatolicum anatolicum using larval antigens. | development of immunity in cross-bred (bos taurus x bos indicus) calves against hyalomma anatolicum anatolicum, vector of bovine tropical theileriosis, was studied using larval antigen (ls) in freund's complete adjuvant (fca). calves immunized with ls + fca showed significant rejection of larvae (57.25 +/- 6.8) and nymphs (45.75 +/- 5.16). abnormally fed larvae (11.4 +/- 0.8) and nymphs (8.25 +/- 1.2) were also recovered from immunized calves. this abnormal feeding may possibly be attributed to ... | 1999 | 10641148 |
| crimean-congo haemorrhagic fever: a seroepidemiological and tick survey in the sultanate of oman. | in 1995 and 1996, 4 persons from the sultanate of oman were confirmed with clinical crimean-congo haemorrhagic fever (cchf). to assess the prevalence of cchf virus infection in oman, a convenience sample of imported and domestic animals from farms, abattoirs and livestock markets was examined by enzyme-linked immunosorbent assay (elisa) for immunoglobulin g (igg) antibodies to cchf virus. ticks were collected from selected animals, identified, pooled by species, host and location and tested for ... | 2000 | 10747269 |
| detection of theileria annulata in cattle and vector ticks by pcr using the tams1 gene sequences. | a polymerase chain reaction (pcr) and southern blot hybridization for the detection of theileria annulata are described. the pcr used primers amplifying a 785 base-pair fragment of the t. annulata gene which encodes the 30 kda major merozoite surface antigen, tams1. the sensitivity of the pcr in bovine blood was 1 piroplasm in 1 microl of blood. t. buffeli, t. parva, babesia bigemina, b. bovis and b. divergens were not detected. the pcr detected down to 1 infected acinus/tick in resting and part ... | 2000 | 10759082 |
| development of an indirect tams1 enzyme-linked immunosorbent assay for diagnosis of theileria annulata infection in cattle. | an enzyme-linked immunosorbent assay (elisa) was developed based on a recombinant major theileria annulata merozoite surface antigen, tams1. four different recombinant proteins derived from two different tams1 alleles, both in two different truncated forms, were tested for their performance in the elisa. furthermore, antigen concentration, various buffers, washing protocol, and the choice of anti-total-immunoglobulin g (igg), anti-igg1, or anti-igg2 as second antibody were evaluated. the perform ... | 2000 | 10799453 |
| distribution and ecology of ticks (acari: ixodidae) infesting livestock in tunisia: an overview of eighth years field collections. | ticks (ixodidae) play a significant role as vectors of pathogens of domestic animals in tunisia. the major losses caused by ticks are related to transmission of protozoan parasites. these include agents of tropical theileriosis and babesiosis in ruminants. since 1991, we conducted research studies on tick population of livestock in tunisia. this overview reports a synthesis on tick distribution, their biology and their role as vectors of pathogens in domestic animals, particularly cattle. during ... | 1999 | 11071534 |
| immunization of cross-bred cattle against hyalomma anatolicum anatolicum by purified antigens. | extracts prepared from unfed larvae of hyalomma anatolicum anatolicum were purified by immunoaffinity chromatography using anti-gut igg as ligand. affinity purified antigen (aff-ghlag) was used to immunize cross-bred (bos taurus x b. indicus) calves of 6-7 months of age. immunized calves rejected 70.6% larvae, 54.5% nymphs and 61.9% adults. no significant changes in the engorged weight of females was observed; however, significant decrease in the engorgement weight of larvae and nymphs was recor ... | 2000 | 11201356 |
| immunoprotective efficacy of a purified 39 kda nymphal antigen of hyalomma anatolicum anatolicum. | soluble nymphal antigens (hnag) were purified by immunoaffinity chromatography using cnbr-activated sepharose 4b coupled with immunoglobulin ligands from animals immunized with hnag and 69-71% protected against challenge infestations, and 8% recovery of the purified protein (aff-hnag) was obtained. following immunization of crossbred calves (bos indicus x bos taurus) with 1600 sg of aff-hnag in three divided doses, significant rejections of larvae (p<0.001, 84.2%), nymphs (p<0.05, 61.4%) and adu ... | 2001 | 11254071 |
| hyalomma impeltatum (acari: ixodidae) as a potential vector of malignant theileriosis in sheep in saudi arabia. | little is known about tick-borne diseases in saudi arabia, particularly regarding the prevalence of theileriosis in small ruminants. this survey studied the potential vectors of malignant theileriosis in saudi arabian sheep. blood, lymph node and tick samples were collected from animals being treated or necropsied at the veterinary diagnostic laboratory in jeddah, makkah (western region), and bureida, al-qasim (central region). blood and lymph node smears were prepared and examined for theileria ... | 2001 | 11511417 |
| evidence for the utility of the bm86 antigen from boophilus microplus in vaccination against other tick species. | the bm86 antigen, as originally identified in boophilus microplus, is the basis of commercial tick vaccines against this tick species. the potential for using this antigen or homologues of the antigen in vaccination against other tick species has been assessed. we have conducted vaccine trials in cattle using the b. microplus-derived recombinant bm86 vaccine (tickgard) using pairs of vaccinated calves and control calves. these were infested with b. microplus and boophilus decoloratus larvae simu ... | 2001 | 11523920 |
| description of a new babesia sp. infective for cattle in china. | a babesia species has been identified and shown to be transmitted by hyalomma anatolicum anatolicum in china. when larvae, nymphs and adults developed from engorged females h. a. anatolicum collected from cattle in xinjiang province were infested onto the babesia-free calves, piroplasms of babesia sp. were seen in blood smears from cattle infested with nymphs (2 calves), but not from the calves infested with larvae (1 calf or adult ticks (2 calves). this babesia sp. proved to be of low virulence ... | 2002 | 12051599 |
| experiments on transmission of an unidentified theileria sp. to small ruminants with haemaphysalis qinghaiensis and hyalomma anatolicum anatolicum. | experiments on the transmission of an unidentified theileria sp. infective for small ruminants by haemaphysalis qinghaiensis and hyalomma anatolicum anatolicum were carried out. three theileria-free batches of adult, larvae, and nymphs of laboratory reared h. qinghaiensis and hy. a. anatolicum ticks were infected by feeding them on sheep infected with theileria sp. the theileria sp. was originally isolated from adult ticks of h. qinghaiensis, by inoculation of blood stabilates or tick transmissi ... | 2002 | 12191896 |
| an epidemiological study on ovine babesiosis in the mashhad suburb area, province of khorasan, iran. | the prevalence of babesia spp. infection was studied in sheep of the mashhad area in iran from 1998 to 2000. a total of 677 sheep originating from 115 flocks were clinically examined and investigated for the presence of babesia spp. in appropriate blood smears and any tick species on the body of the animals. the study revealed that the infection rate for babesia ovis and babesia motasi were 167 (24.6%) and 4 (0.5%), respectively. double (mixed) infections occurred in 21 (3%) sheep. differences i ... | 2002 | 12208039 |
| studies on theileria and babesia infecting live and slaughtered animals in al arish and el hasanah, north sinai governorate, egypt. | during the year 2001, a total of 475 sheep, 200 goats, 135 cattle and 190 camels in el arich city and el hassanah center were examined for babesia ovis and theileria ovis. blood films were taken from the vein of the ear. meanwhile, the animals were examined for tick infestations. b. ovis and th. ovis were detected in 13 (2.7%), and 14 (2.9%) sheep, 14 (7.0%), and 15 (7.5%) goats, 13 (9.6%), and 11 (8.1%) cattle and 18 (9.5%), and 24 (12.6%) camels respectively. on the other hand, double infectio ... | 2002 | 12214937 |
| the innate resistance of kenana cattle to tropical theileriosis (theileria annulata infection) in the sudan. | a study was carried out to assess the innate resistance of the indigenous kenana breed of cattle in the sudan to tropical theileriosis, theileria annulata infection of cattle. nine susceptible kenana calves were obtained from an area free from tropical theileriosis and the vector tick hyalomma anatolicum anatolicum and were found negative to t. annulata antibodies in the indirect fluorescent antibody test. they were infected by inoculation of 1.0 ml t. annulata sporozoite stabilate. three friesi ... | 2002 | 12381583 |
| comparative immunopotentiating properties of saponin and incomplete freund's adjuvant coupled to affinity purified larval antigen of hyalomma anatolicum anatolicum. | comparative immunostimulatory properties of saponin and incomplete freund's adjuvant (ifa) were studied using affinity purified 39 kda larval antigen of hyalomma anatolicum anatolicum. significant antibody response to 39 kda antigen was detected in the sera of rabbits immunized with both 39 kda plus saponin and 39 kda plus ifa in comparison to their corresponding control animals. insignificant differences were noted in the antibody response between the animals of two immunized groups. upon chall ... | 2002 | 12587732 |
| a comparison of susceptibilities to infection of four species of hyalomma ticks with theileria annulata. | in this comparative study unfed nymphs of four hyalomma tick species (hyalomma anatolicum anatolicum, hyalomma anatolicum excavatum, hyalomma detritum and hyalomma marginatum marginatum) were allowed to engorge on calves experimentally infected with theileria annulata. the infection prevalence in the salivary glands of the adult female and male ticks of each hyalomma species used in the study were assessed. the infection prevalence with t. annulata was high and did not vary markedly in the four ... | 2003 | 12695036 |
| proteolytic enzyme activity and attenuation of virulence in theileria annulata schizont-infected cells. | a field isolate of theileria annulata (uzbek strain) was obtained from calves infected by hyalomma anatolicum ticks collected from an endemic region in uzbekistan. schizont-infected bovine cells that had been established and propagated in cell culture were examined for attenuation both in vivo, by inoculating cells from various passages into calves, and in vitro for metalloproteinase activity. during serial subcultivation a gradual reduction in virulence and in enzyme activity in cells infected ... | 2003 | 12935740 |
| [spontaneous infection of hyalomma anatolicum koch with rickettsia burneti in southern kirghiz]. | | 1956 | 13410090 |
| [differentiation of closely related species hyalomma anatolicum and h. excavatum (acari: ixodidae) based on a study of all life cycle stages, throughout entire geographical range]. | species status is stated for hyalomma anatolicum and h. excavatum, based on numerous material from the territory of their distribution. the differentiation of species is recovered for all stages of the life cycle. diagnosis of hyalomma anatolicum. female: small tick--length of scutum commonly less than 2 mm; width of scutum commonly less than 1.9 mm; color of scutum, gnathosoma and coxae light, yellowish- or reddish-brown; whitish enameled pigment on scutum absent; posterolateral ledges of scutu ... | 2003 | 14515505 |
| experimental transmission of an unnamed bovine babesia by hyalomma spp., haemaphysalis longicornis and boophilus microplus. | experiments were undertaken to determine the mode of transmission to cattle of an unnamed babesia sp. by hyalomma anatolicum anatolicum, hyalomma detritum, hy. rufipes koch, haemaphysalis longicornis and boophilus microplus. the unnamed babesia species designated babesia u sp. was isolated by infesting cattle with nymphs from female hy. a. anatolicum ticks collected from xinjiang province. adults of laboratory reared hy. a. anatolicum, hy. detritum and hy. rufipes koch were infected with babesia ... | 2003 | 14519316 |
| a study about tick vectors of bovine theileriosis in an endemic region of iran. | the aim of this study was to determine the population of ticks in infected cattle and to identify the tick vectors of bovine theileriosis in an endemic area of iran from 1998 to 1999. a total of 120 suspected cattle suffering from theileriosis were clinically examined and investigated for the presence of theileria annulata in blood smears and the presence of any tick species on the body of cattle. in this study, 680 ticks were collected from 107 cattle infected with t. annulata. the prevalence o ... | 2003 | 14629004 |
| immunization of crossbred cattle (bos indicus x bos taurus) with fractionated midgut antigens against hyalomma anatolicum anatolicum. | crossbred calves (bos indicus x bos taurus) were immunized with a fractionated midgut supernate antigen (gs-f ag from hyalomma anatolicum anatolicum). the first inoculation on day 0 was given intramuscularly after emulsification with freund's complete adjuvant; the second was given subcutaneously on day 14 in incomplete freund's adjuvant; and the third on day 35 was given subcutaneously without adjuvant. each injection comprised 1 mg of antigen protein. ten days after the last inoculation, the i ... | 2003 | 14690089 |
| studies on the epidemiology of tropical theileriosis (theileria annulata infection) in cattle in central anatolia, turkey. | an epidemiological survey for theileria annulata infection was conducted in 12 selected villages around ankara in central anatolia, turkey, during the period april 1990 to january 1993. during the survey, 198 cattle of 30 local breeds, 84 holstein-friesian x local breeds and 84 holstein-friesian breed were examined for antibodies to t. annulata and the presence of the vector ticks. four species of hyalomma ticks were identified: hyalomma anatolicum anatolicum, hyalomma anatolicum excavtum, hyalo ... | 2003 | 14690090 |