Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
|---|
| 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 ... | 1996 | 8792576 |
| phenotypic and genotypic characterization of spotted fever group rickettsiae isolated from catalan rhipicephalus sanguineus ticks. | eighty-nine rhipicephalus sanguineus ticks and 21 rhipicephalus bursa ticks collected in catalonia were tested by the hemolymph test to establish their infection rate with spotted fever group rickettsiae. by giménez staining, 11.2% of the r. sanguineus isolates and 0% of the r. bursa isolates were found to contain rickettsia-like organisms. six spotted fever group rickettsial strains (bar29, bar31, gir4, tar1, tar2, and tar3) were isolated from these ticks and were characterized by phenotypic an ... | 1996 | 8897166 |
| mediterranean spotted fever: a preliminary tick field study. | we studied the prevalence of rickettsialike organisms infection in different tick species (3154 adults) collected in several areas of the ebro valley (spain). the gimenez stain showed a prevalence of rickettsia-like organisms in 38.6% of the studied ticks. using the immunofluorescence assay, only two species, rhipicephalus sanguineus (16.4%) and r. pusillus (19.9%) have shown organisms compatible with spotted fever group rickettsiae. | 1996 | 8905308 |
| attempted transmission of ehrlichia canis by rhipicephalus sanguineus after passage in cell culture. | to compare the transmissibility by the brown dog tick, rhipicephalus sanguineus, of a recent isolate of ehrlichia canis (ebony) with that of another isolate (oklahoma) that had been passaged in cell culture, and to assess the genetic similarity of the 2 isolates as reflected in the nucleotide (nt) sequence of 16s rdna. | 1996 | 8915436 |
| prevalence of spotted fever group rickettsiae in ticks from southern israel. | the prevalence of spotted fever group rickettsiae was studied in questing ticks collected from southern israel. ticks were examined from an agricultural settlement (kibbutz ze'elim), an endemic site for mediterranean spotted fever, and from another kibbutz (re'im) in an adjacent area where the disease has not been reported. ticks were collected by flagging and co2 traps from vegetation inside and outside the settlements during 1989/1990 and 1994. in ze'elim, 98% of the ticks collected were brown ... | 1996 | 8961650 |
| 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 ... | 1996 | 9257347 |
| canine ehrlichiosis in egypt: sero-epidemiological survey. | a total of 374 dogs, 252 from five military kennels and 122 privately owned, were tested for ehrlichia canis antibody. sera were tested at a 1:20 dilution by indirect fluorescent antibody with the use of e. canis cell-culture antigen slides. the overall prevalence of e. canis antibody was 33%. antibody prevalence among military dogs (29%) was significantly lower than among privately owned dogs (41%; p < 0.05). the e. canis seroprevalence among dogs infested with ticks (rhipicephalus sanguineus) ... | 1995 | 8539033 |
| analysis of stage-specific and shared antigens derived from rhipicephalus sanguineus by electrophoresis and western blotting. | we carried out an sds-page analysis of antigens of rhipicephalus sanguineus using extracts of eggs (ee), larvae (le), nymphs (ne), male salivary glands (msge), male midguts (mme), female salivary glands (fsge) and female midguts (fme). under non-reducing conditions a common band of about 205 kda was observed. ee, le and ne extracts showed groups of bands between 150 and 75 kda. a protein pattern was observed in fsge extract with a group of bands between 75 and 50 kda and four bands between 15 an ... | 1995 | 8541584 |
| 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 ... | 1995 | 8551500 |
| cutaneous hypersensitivity induced in dogs and guinea-pigs by extracts of the tick rhipicephalus sanguineus (acari: ixodidae). | the cutaneous hypersensitivity induced by rhipicephalus sanguineus tick extract in dogs (natural host) and guinea-pigs (laboratory host) was evaluated. the left ear of infested and control (tick-bite naive) dogs and guinea-pigs was injected intradermally with an extract from unfed adult ticks and the right ear with phosphate buffered saline (pbs). ear thickness variations were then measured after 10 min and 1, 2, 6, 18, 24, 48, 72 and 96 h post-injection. results were expressed as percentual cha ... | 1995 | 8556961 |
| genomic and proteinic characterization of strain s, a rickettsia isolated from rhipicephalus sanguineus ticks in armenia. | strain s, a spotted fever group (sfg) rickettsia isolated from rhipicephalus sanguineus ticks collected in armenia, was identified. microimmunofluorescence, sodium dodecyl sulfate-polyacrylamide gel protein electrophoresis and western immunoblotting, pcr and then restriction fragment length polymorphism analysis, pulsed-field gel electrophoresis, and 16s rrna gene sequencing were used to compare strain s with reference isolates. strain s was found to possess proteinic, antigenic, and genomic pat ... | 1995 | 8567916 |
| 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 ... | 1995 | 8596189 |
| genotypic evaluation of rickettsial isolates recovered from various species of ticks in portugal. | twelve rickettsial isolates, from rhipicephalus sanguineus, r. turanicus, dermacentor marginatus and hyalomma marginatus, were subjected to genotypic analysis. amplification of specific dna sequences, restriction endonuclease digestion of amplified dna products, and gel electrophoresis were used to identify specific dna fragment-banding patterns. five patterns were resolved. four were homologous with those of previously described rickettsial genotypes, r. conorii, r. slovaca, r. rhipicephali and ... | 1995 | 7867736 |
| incidence of brown dog ticks, rhipicephalus sanguineus, at a kennel in okayama prefecture. | twenty two adult dogs suffered from tick infestation at a kennel in okayama prefecture in the summer of 1994. four of them had been introduced from u.s.a. some dogs showed pyoderma, anemia, neutrophilia or eosinophilia. neither babesia gibsoni nor hepatozoon canis was detected on the smear samples of peripheral blood. the ticks detected were morphologically identified as rhipicephalus sanguineus. this case was a rare incidence of the tick in the other areas of japan than okinawa. | 1995 | 7548423 |
| elisa screening for lyme disease in children with chronic arthritis. | one hundred patients, aged 6-15 years and presented to el-shatby university children's hospital with chronic/recurrent arthritis and skin lesions suggestive of erythema chronicum migrans (ecm), were investigated for presence of igg antibodies against borrelia burgdorferi flagellum antigen elisa test. four cases yielded positive serum samples which were true positive cases as they showed negative venereal disease research laboratory (vdrl) test. ticks collected from domestic animals from the hous ... | 1995 | 7665949 |
| 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 ... | 1995 | 7756402 |
| stage-specific development of a filarial nematode (dipetalonema dracunculoides) in vector ticks. | this paper reports the development of the canid filarial worm, dipetalonema dracunculoides, in the brown dog tick, rhipicephalus sanguineus by determining whether development is similar within larval, nymphal and adult stages of infected ticks. this study demonstrates that only infected nymphal ticks can support the complete development of the filarial worm. infected larval ticks are not suitable intermediate hosts, nor are infected adults. development depends on some stage-specific property of ... | 1994 | 7829843 |
| cholesteryl esters on the body surfaces of the camel tick, hyalomma dromedarii (koch, 1844) and the brown dog tick, rhipicephalus sanguineus (latreille, 1806). | cholesteryl esters were found to constitute a major component of the lipids coating the body cuticle of females of the camel tick, hyalomma dromedarii and the brown dog tick, rhipicephalus sanguineus. one or more cholesteryl esters, alone or in combination, have been shown to serve as the mounting sex pheromone of several species of ixodid ticks. consequently, knowledge of these compounds is important for an understanding of the mating behavior of these ticks. based on thin layer chromatography, ... | 1994 | 7628247 |
| [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. | 1994 | 7637997 |
| isolation and identification of a rickettsial strain related to rickettsia massiliae in greek ticks. | adult ticks were collected in a rural area of central greece in order to isolate and identify rickettsiae. a hemolymph test using gimenez staining was used for detection, while simultaneous isolation was performed using the shell-vial technique. serologic, antigenic, and genomic characterization of the isolates was achieved by microimmunofluorescence, sodium dodecyl sulfate-polyacrylamide gel electrophoresis (sds-page) and western blotting, the polymerase chain reaction and restriction fragment ... | 1994 | 7908503 |
| immunological response in rabbits infested with rhipicephalus sanguineus. | in order to clarify the importance of humoral antibody in host resistance to ticks, in the present work we studied the immunological response of rabbits infested with larvae, nymphs or adults of rhipicephalus sanguineus, using extracts of eggs (ee), larvae (le), nymphs (ne), male salivary glands (msge), male midguts (mme), female salivary glands (fsge) and female midguts (fme). when serum from rabbits infested with larvae or nymphs was tested using enzyme-linked immunosorbent assay, no reactions ... | 1994 | 7949315 |
| immunisation of dogs, hamsters and guinea pigs against rhipicephalus sanguineus using crude unfed adult tick extracts. | naive experimental groups of dogs, hamsters and guinea pigs were inoculated three times subcutaneously with unfed adult extract of the tick rhipicephalus sanguineus and challenged with adult r. sanguineus to evaluate resistance. the acquisition of resistance was based on alterations of some reproductive and feeding performance parameters of female ticks such as female and egg mass weights, engorgement, pre-oviposition and incubation periods, larval hatchability rate and efficiency rates of femal ... | 1994 | 8030191 |
| 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 ... | 1994 | 8189415 |
| 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 ... | 1993 | 8254637 |
| [ticks in the region of belgrade]. | the paper gives a brief introduction concerning the role of ticks in transmission of numerous diseases to both animals and humans. methods of work, research goals and finally, results of tick findings on animals and people in belgrade area are presented. occasional findings of those arthropodes in various urban areas have also been described. the collected ticks belong to the species ixodes ricinus and rhipicephalus sanguineus. the authors conclude that ecologic research of ticks should be conti ... | 1993 | 8262431 |
| experimental transmission of dipetalonema dracunculoides (cobbold 1870) by rhipicephalus sanguineus (latreille 1806). | a dog naturally infected with dipetalonema dracunculoides and having a microfilaremia of 6050 microfilariae per mm3 of blood was used as source of infection. experimentally cultivated nymphs of rhipicephalus sanguineus were fed on the donor dog. once engorged, ninety-three nymphs were removed and kept at 30 degrees c and rh 90% until they moulted to the adult stage. to study the development of microfilariae in the vector, ten ticks were dissected at day 37 post-infection. adult infected ticks we ... | 1993 | 8333138 |
| distribution and host-relationship of ticks (ixodoidea) infesting domestic animals and rodents in sinai peninsula. | geographical distribution of ticks infesting farm animals in sinai peninsula revealed the presence of 12 tick species namely hyalomma dromedarii, h. impeltatum, h. an anatolicum, h. an. excavatum, h. marginatum rufipes, h. m. turanicum, h. schulzei, rhipicephalus sanguineus, r. turanicus, boophilus annulatus, ornithodors erraticus and argas persicus. the distribution map of those species is given. the areas of sinai could be arranged as regards the number of tick species in the following descend ... | 1993 | 8376863 |
| climate and cuticular hydrocarbon variation in rhipicephalus sanguineus ticks (acari: ixodidae). | an association between the climate and variation of the cuticular hydrocarbon pattern was found for several populations of rhipicephalus sanguineus ticks. extreme parameters of climate (absolute minimal and maximal temperatures) correlated positively with six compounds (mainly methylalkanes) detected in cuticular hydrocarbon mixtures. in the light of work conducted on cuticular transpiration in arthropods and biochemical phase changes in cuticle lipids, it is suggested that the adaptation of tic ... | 1993 | 8415569 |
| ecological studies on the brown dog tick rhipicephalus sanguineus (acari: ixodidae) in southern israel and its relationship to spotted fever group rickettsiae. | an outbreak of spotted fever group rickettsiae (sfgr) was investigated by studying free-living and parasitic stages of ticks in two settlements of equal size and population located 20 km apart in the negev desert. although high morbidity from sfgr was found in one of the settlements (kibbutz ze'elim), no clinical cases were observed in the second (kibbutz re'im). using flagging and co2-trapping, approximately 9 times more ticks were collected in ze'elim than in re'im. rhipicephalus sanguineus (l ... | 1993 | 8433318 |
| rhipicephalus sanguineus: observations on the parasitic stage on dogs in the negev desert of israel. | sixteen dogs were studied for infestation with r. sanguineus in kibbutz ze'elim in the northwestern part of the negev desert over a period of one year. the mean number of ticks per dog per month was 16.4. the majority of the ticks were adults: males (48.6%) and females (34.4%). the ears and abdomen of the dog were the predilection sites for the ticks. male ticks were more abundant on the ears, whereas female ticks were more abundant on the ears and the abdomen. a strong correlation between tick ... | 1993 | 7628225 |
| rickettsiae and their ecology in the alpine region. | two rickettsioses are known to be distributed in the alpine region, the ubiquitous q fever and the so called tick-bite fever (fever boutonneuse) which is due to rickettsia conorii. the latter is only temporarily seen and brought in via dogs by the dog tick rhipicephalus sanguineus from italy and southern france. further, the presence of two apathogenic rickettsiae, r. slovaca (in austria, switzerland, germany) and r. helvetica (switzerland) has been determined. the present paper will discuss eco ... | 1993 | 7905244 |
| a survey of ticks on farm animals in libya. | thirteen species of ixodid ticks and two species of argasid ticks were collected during a three-year survey of 58 farms in libya. these included boophilus annulatus, b. microplus, b. decoloratus, seven species of hyalomma, rhipicephalus sanguineus, rh. evertsi, rh. bursa, argas persicus and ornithodoros foleyi. this is the first recording of b. microplus, b. decoloratus and rh. bursa in libya. of 20,391 animals examined by random sampling, 2020 (9.6%) had ticks; particularly common were hy. drom ... | 1992 | 1288437 |
| identification of spotted fever group rickettsiae using polymerase chain reaction and restriction-endonuclease length polymorphism analysis. | in order to facilitate the isolation and identification of spotted fever group (sfg) rickettsiae from their tick vectors, we used the centrifugation shell vial technique or traditional isolation procedures and genotypic identification using the restriction fragment length polymorphism analysis of polymerase chain amplified fragments. the presence of rickettsia conorii both in rhipicephalus sanguineus ticks collected in southern france, and in rhipicephalus simus and haemaphysalis leachi from zim ... | 1992 | 1350164 |
| evaluation of devices for removing attached rhipicephalus sanguineus (acari: ixodidae). | three types of forceps and a commercially available device, the tick solution, were used to remove adult brown dog ticks, rhipicephalus sanguineus (latreille), from dogs. the tick solution proved least effective at removing ticks, requiring significantly more removal attempts compared with forcep-removal methods. medium-tipped angled forceps provided the best overall performance. other advantages and disadvantages of the devices are discussed. | 1992 | 1404275 |
| tick (acari: ixodidae) attachment cement and salivary gland cells contain similar immunoreactive polypeptides. | a specific antiserum (12c) raised to a 90-kda immunogenic component of salivary glands of the tick rhipicephalus appendiculatus recognized similar 90-kda polypeptides from salivary glands of the american dog tick, dermacentor variabilis, and the lone star tick, amblyomma americanum, as well as 70-kda polypeptides in the cement of d. variabilis, a. americanum, and r. sanguineus (brown dog tick). the reduction in size of the polypeptide for these ticks suggests that it is modified in some way duri ... | 1992 | 1495047 |
| spotted fever rickettsiae in ticks from the northern sinai governate, egypt. | a field study was initiated in 1988 to investigate whether spotted fever group rickettsiae occur in geographic areas in egypt that are adjacent to an area in the southern israeli negev that has a defined focus of spotted fever disease. ticks were collected from dogs, sheep, and camels at four study sites in the northern sinai. tick hemolymph was processed for rickettsial detection by staining with fluorescein isothiocyanate-conjugated antibody to rickettsia rickettsii. of the 442 hemolymphs exam ... | 1992 | 1599048 |
| comparative activity of three repellents against the ticks rhipicephalus sanguineus and argas persicus. | the residual repellent activity of n,n-diethylphenyl-acetamide (depa), n,n-diethyl-3-methyl benzamide (deet) and dimethylphthalate (dmp) against the hard tick rhipicephalus sanguineus (latreille) and the soft tick argas persicus (oken) from topical application on rabbits and hens respectively in the laboratory have been studied. it was found that a 25% concentration of deet gave strong repellency (greater than 90%) against larvae and nymphs of r. sanguineus for 15 and 7 days respectively and aga ... | 1992 | 1600227 |
| ectoparasite impacts on gerbillus andersoni allenbyi under natural conditions. | to assess ectoparasite impact on individuals and populations of gerbillus andersoni allenbyi under natural conditions, i addressed the following questions. do ectoparasites affect their host fitness and, if so, how? do ectoparasites affect host population level? does this parasite-host interaction support the traditional concept of parasite evolution towards avirulence? for this purpose, host infestation, infection, survival, haematological indices, and physical condition were recorded. a field ... | 1992 | 1641248 |
| a descriptive study of the canine population in a rural town in southern africa. | the health status of a population of dogs (n = 220) from a rural southern african town is described. a cross sectional survey was done to collect the necessary information. all animals examined were mongrels with a mean condition score of 1.93. the oldest dog found in the population was 8 years old. rhipicephalus sanguineus was the dominant tick species encountered on the dogs, echidnophaga gallinacea the dominant flea species, while cordylobia anthropophaga and demodex canis also affected the h ... | 1991 | 1770490 |
| ticks (ixodidae) parasitizing humans in four provinces of north-western argentina. | in four provinces of north-western argentina (catamarca, jujuy, salta and tucumán), between march 1976 and march 1990, 514 ticks were found on humans. they were identified as rhipicephalus sanguineus group (1 male), boophilus microplus (6 male, 1 female), amblyomma parvum (9 male, 13 female), a. cajannense (35 male, 30 female, 81 nymphs), a. neumanni (33 male, 41 female, 144 nymphs) and amblyomma spp. (10 nymphs, 110 larvae). most of the ticks were from the phytogeographical region of chaco, one ... | 1991 | 1809248 |
| rickettsiae and rickettsioses in portugal. | the only rickettsiae recorded in portugal till now were rickettsia conorii and coxiella burnetii. boutonneuse fever is one of the most important transmissible diseases in portugal. though the annual number of cases is not exactly known, it is estimated to be not far from 20,000 in some years. q fever is the other rickettsiosis widely disseminated throughout the country. the serological prevalence and the incidence of those rickettsioses in portugal are presented in this communication. in recent ... | 1991 | 1884782 |
| studies of a "new" rickettsiosis "astrakhan" spotted fever. | the acute febrile disease with characteristic rash seen in astrakhan region and named as "viral exanthema of unknown etiology" was proved to be a spotted fever group rickettsiosis. serological examination of humans from endemic areas by complement fixation test revealed antibodies to r. conorii, r. akari and strains netsvetaev and ar-74 of r. sibirica in titres from 20 to 640 in sera from ill persons. of 429 sera from healthy persons, 5.1% were serologically positive in a titre of 20-40. the pre ... | 1991 | 1884783 |
| tick-bite fever in zimbabwe. survey of antibodies to rickettsia conorii in man and dogs, and of rickettsia-like organisms in dog ticks. | as part of a study of tick-bite fever in zimbabwe, the prevalence of antibodies to rickettsia conorii in dogs and humans was examined. blood samples were obtained from 184 dogs in different parts of the country and tested by indirect immunofluorescence. in all, 150 (82%) were positive at a titre of 1/40 or higher. dogs from the south and east of the country showed very high seroprevalence compared with dogs from the main urban centre, harare. human serum was obtained from blood donors, from peop ... | 1991 | 1887350 |
| predation of ticks of the rhipicephalus sanguineus (latreille, 1806) group and boophilus microplus (canestrini, 1888) (acari: ixodidae) by nothura temminck, 1815 (aves: tinamidae) in salta, argentina. | 1991 | 1937269 | |
| etiologic agent of lyme disease, borrelia burgdorferi, detected in ticks (acari: ixodidae) collected at a focus in alabama. | the study was conducted at sites of known transmission of borrelia burgdorferi in east central alabama. the objectives were to determine species of ticks present at these sites, their host associations, and species of ticks and small mammals naturally infected with b. burgdorferi. a total of 451 hosts were examined for ticks, including cotton mice, peromyscus gossypinus (le conte); cotton rats, sigmodon hispidus say & ord; southern short-tailed shrews, blarina carolinensis (bachman); house mice, ... | 1991 | 1941933 |
| evaluation of rhipicephalus sanguineus as a potential biologic vector of ehrlichia platys. | the brown dog tick, rhipicephalus sanguineus (acari: ixodidae), transmits several diseases among dogs including ehrlichia canis infection. the role of rhipicephalus sanguineus as a biologic vector for e platys, the rickettsial agent of infectious canine cyclic thrombocytopenia, was studied in dogs. laboratory-cultured, pathogen-free nymph ticks were fed to repletion on dogs acutely infected with e platys. tick engorgement coincided with the development of initial parasitemia and thrombocytopenia ... | 1991 | 1952347 |
| tick information sheet. the brown dog tick. rhipicephalus sanguineus. | 1991 | 2014631 | |
| [babesiosis of dogs in germany: epidemiologic case analysis]. | between january 1987 and february 1990 babesia infections were detected in 320 dogs in germany by means of microscopical and/or serological methods. it was found, that 316 dogs were infected with babesia canis and 4 animals with babesia gibsoni. of the babesia-canis-positive dogs 184 were abroad up to 4 months before diagnosis, mainly in france, spain and italy, but also in hungary, greece, jugoslavia, portugal, morocco, togo, pakistan, sri lanka, malaysia, turkey, romania, austria and the nethe ... | 1991 | 2068714 |
| relationships between the rhipicephalus sanguineus complex ecology and mediterranean spotted fever epidemiology in france. | the authors examine the epidemiologic features of mediterranean spotted fever in france in light of the bioecological peculiarities of each of the three known member of the rhipicephalus sanguineus tick group (r. sanguineus, r. turanicus, r. pusillus). the results show that r. sanguineus is the main vector. certain aspects of this tick species are of interest: affinity for man, close contact with humans for a long periods, peak of tick population (preimaginal stages) at the same time as the peak ... | 1990 | 2091935 |
| the activity of aspergillus ochraceus (fungi) on replete females of rhipicephalus sanguineus (acari: ixodidae) in natural and experimental conditions. | aspergillus ochraceus wilhelm was isolated from rhipicephalus sanguineus (latreille) ticks infected under natural conditions, and developing an illness characterized by absence of oviposition, mummification and death. from the histological sections, it is deduced that a. ochraceus colonized the ticks via the anus, as posterior gut and malpighian tubules are invaded. the experimental inoculation was carried out on replete female ticks; a disease alike to that observed in naturally infected ticks ... | 1990 | 2093613 |
| borrelia burgdorferi in ticks of the canton tessin (switzerland). | in the northern alps it is hard to find an ixodes ricinus population which does not harbour borrelia burgdorferi. the infection rates range from 5 to 34% for adults and nymphs to 3.1% for larvae. this study shows that the infection rates on the southern side of the alps are similar, at 25% for adults, 36.2% for nymphs and 3.2% for larvae. with respect to tick species other than i. ricinus, we did not succeed in finding any spirochetes in dermacentor marginatus, haemaphysalis punctata, ixodes hex ... | 1990 | 2132440 |
| [the taxonomic aspects of the transmission of the causative agent of lyme disease]. | according to world literature data 17 species of ixodid ticks have been studied for natural infection with the lyme disease agent. analysis of the data on the level of the infection, transovarial and transphase transmission has shown that main biological vectors of borrelia burgdorferi are the species of the subgenus ixodes s. str. - i. ricinus, i. persulcatus (eurasia), i. dammini, i. pacificus (north america). potential vectors are i. scapularis, i. dentatus, amblyomma americanum, dermacentor ... | 1990 | 2259524 |
| additional instances of human parasitism by the brown dog tick (acari: ixodidae). | nine cases of humans parasitized by the brown dog tick, rhipicephalus sanguineus (latreille), are reported. eight cases occurred during 1989. seven of the individuals were from an apparent focus of human biting in northern texas and southwestern oklahoma, one case was from san antonio, bexar county, tex., and one case was from homestead air force base, dade county, fla. these cases suggest that the role of r. sanguineus in the transmission of the etiologic agent of canine ehrlichiosis and other ... | 1990 | 2280392 |
| attempted transmission of ehrlichia risticii, causative agent of potomac horse fever, by the ticks, dermacentor variabilis, rhipicephalus sanguineus, ixodes scapularis and amblyomma americanum. | dermacentor variabilis, rhipicephalus sanguineus, amblyomma americanum, and ixodes scapularis ticks were investigated for their ability to transmit potomac horse fever. larval and nymphal ticks were exposed to ehrlichia risticii by feeding on mice inoculated with the organism. molted exposed ticks were then allowed to feed on susceptible ponies or mice. no evidence of transmission, either clinically or by detection of antibodies to e. risticii in mice or ponies, was observed for any tick species ... | 1990 | 2307070 |
| rickettsia in texas. | since the first reported case in 1941, rocky mountain spotted fever in humans has been reported from many areas of texas, with two major foci, one located in the north-central region and the other in the eastern region of the state. during the period 1979-1988, 421 cases of rmsf were reported, reaching 108 cases in 1983 and declining in subsequent years. statewide surveillance programs to detect spotted fever group rickettsiae in tick populations were initiated in 1976. in recent years, the sfg ... | 1990 | 2378448 |
| isolation by a sensitive centrifugation cell culture system of 52 strains of spotted fever group rickettsiae from ticks collected in france. | boutonneuse fever caused by rickettsia conorii is transmitted mainly by the brown dog tick, rhipicephalus sanguineus. we collected 540 ticks in marseille, france, and tried to isolate as many strains of rickettsia as possible. ticks were evaluated for the presence of rickettsia by the hemolymph test and by a new culture system, the centrifugation-shell vial technique. we avoided contamination in the culture system. prior to ticks being submitted to the hemolymph test, they were disinfected. only ... | 1990 | 1696286 |
| differential staining of tick chromosomes: techniques for c-banding and silver-staining and karyology of rhipicephalus sanguineus (latreille). | a new karyotypic procedure is described for tick chromosomes along with modifications of accepted techniques for c-banding and silver-staining. the staining procedures produce patterns with staining limited to the centromeric regions and the nucleolar organizer regions (nors). the possible reasons for the concordant patterns are discussed based on the staining characteristics of the 2 techniques. the karyotype of rhipicephalus sanguineus possesses 20 acrocentric autosomes with a single pair of n ... | 1989 | 2466974 |
| focus of human parasitism by the brown dog tick, rhipicephalus sanguineus (acari: ixodidae). | throughout most of its range, the brown dog tick, rhipicephalus sanguineus (latreille), prefers dogs as a host, but human bites occasionally occur in the mediterranean region and central america; historically, this species has rarely bitten humans in the united states. a focus of 15 human bite cases by this tick is reported from four air force bases located within 200 miles of each other in north central texas and southwestern oklahoma. the sudden appearance of numerous documented bite cases ind ... | 1989 | 2585458 |
| problems of housing and health of people utilizing the garbage in cairo from the viewpoint of medical entomology. | more than 50 arthropod species were found at two dumping-grounds with dwelling-places (mokattam and ezbet el nakhl) in cairo. their importance was evaluated from the epidemiological and epizootological points of view. of primary importance is the great prevalence of the fleas (xenopsylla cheopis) on brown rats (rattus norvegicus), since the rats are in a close contact with people. they are often simultaneously parasitized with another flea species, ctenocephalides felis felis, which is very freq ... | 1989 | 2634080 |
| three groups of babesia canis distinguished and a proposal for nomenclature. | two stocks of large babesia from dogs originating in france, transmitted by dermacentor reticulatus, two from north africa, having rhipicephalus sanguineus as vector, and one from south africa, transmitted by haemaphysalis leachi, were compared in cross-immunity tests in dogs and in the indirect fluorescent antibody test (ifat). the french and north african stocks did not immunise against the south african one, while the north african stocks did not protect against a french one. the south africa ... | 1989 | 2655263 |
| lack of co-transmission of rickettsia conorii and ehrlichia canis in human beings in the south of france. | ehrlichia canis is the agent of canine ehrlichiosis, commonly known as canine tropical pancytopenia. this canine disease is frequent in our area, as is mediterranean spotted fever in humans. recently a few cases of human ehrlichiosis have been described in the usa. the supposed vector of both diseases is rhipicephalus sanguineus. in order to evaluate the co-transmission of these two diseases, we selected 498 human sera positive for r. conorii and tested them for ehrlichia canis. none of them wer ... | 1989 | 2707389 |
| introduction of the tick rhipicephalus sanguineus to czechoslovakia: an additional case. | 1989 | 2767559 | |
| quantitative studies of host immunoglobulin g in the hemolymph of ticks (acari). | a radioimmunoassay was used to measure the concentration of host immunoglobulin g (igg) in the hemolymph of female hard and soft ticks. hyalomma excavatum koch, rhipicephalus sanguineus latreille, ornithodoros tholozani (laboulbene and megnin), and o. moubata (murry) were fed on rabbits immunized with ovalbumin; argas persicus (oken) was fed on chickens immunized with cytochrome 'c.' at 24 h after feeding, the concentration of antiovalbumin igg in the hemolymph was 7 micrograms/ml for h. excavat ... | 1989 | 2769701 |
| growth of bluetongue and epizootic hemorrhagic disease of deer viruses in poikilothermic cell systems. | continuous cell lines from the ticks dermacentor variabilis, d. parumapertus, d. nitens, rhipicephalus sanguineus and r. appendiculatus, the mosquitoes aedes albopictus and culex quinquefasciatus and the african toad xenopus laevis were tested for their ability to replicate bluetongue (bt) and epizootic hemorrhagic disease of deer (ehd) viruses, and for their sensitivity as potential isolation systems. bt serotype 17 grew to peak titers of 10(4.5)-10(7.5) tcid50 ml-1 in all except one of the tic ... | 1988 | 2833002 |
| [development of the filaria monanema martini in the epidermis of ixodid ticks]. | morphological and histological analysis of the larval development of monanema martini, a filaria with skin dwelling microfilariae. the vectors are the hexapod larvae of rhipicephalus sanguineus, r. turanicus and h. truncatum; the filarial infective stages appear during the larval-nymph moult of the vector (11 days at 26 degrees c). this species, and in our opinion the other species of monanema, have a complete development in the epidermis of the ticks. hard-ticks (ixodidae) appear to be the main ... | 1988 | 3400961 |
| [5 cases of mediterranean boutonneuse fever in switzerland]. | the boutonneuse fever also called marseilles or eruptive mediterranean fever is an common disease in mediterranean area, in africa and indien. rickettsia conorii is the microorganism involved and rhipicephalus sanguineus is the most common vector. in switzerland, this dog's tick don't exist in the nature, but it may be introduced by a dog contaminated elsewhere outside of the country and remain alive in our houses. it the reason why this disease is very uncommon in switzerland. however, it may b ... | 1987 | 3426074 |
| [tick bite fever]. | tick bite fever (boutonneuse fever) is endemic in india, africa and especially the mediterranean countries. it is occasionally "imported" into central european countries by tourists. the exanthematic disease is caused by infection with rickettsia conori, which is usually transmitted by the brown dog tick. a typical primary lesion at the site of the tick's bite is an important diagnostic hint. the treatment of choice are tetracyclines. | 1987 | 3583731 |
| parasites of stray dogs in the rabat region, morocco. | eighteen parasites were identified from 57 stray dogs from the urban and rural areas of rabat. the prevalence of the species of parasites was: ctenocephalides (c. canis, c. felis) 94.7%, rhipicephalus sanguineus 68.5%, linguatula serrata, babesia canis, isospora canis each 3.5%, toxocara canis 7%, dirofilaria immitis, taenia hydatigena, t. pisiformis each 12.3%, dipetalonema dracunculoides 10.5%, ancylostoma caninum 17.5% echinococcus granulosus 22.8%, toxascaris leonina 33.3%, dipylidium caninu ... | 1987 | 3675044 |
| ticks (acari:ixodidae) of the blue and white nile ecosystems in the sudan with particular reference to the rhipicephalus sanguineus group. | twenty-four adult ixodid tick species, infesting livestock and some wildlife hosts along the blue and white nile in the sudan, were identified. three species, boophilus geigyi, rhipicephalus camicasi and r. bergeoni, were recorded for the first time from the sudan. tick numbers on indigenous breeds of cattle (bos indicus) were relatively low, ranging between 17.1 and 40.5 per animal. young cattle grazing with the herd carried significantly fewer ticks than older animals. with the exception of b. ... | 1987 | 3331134 |
| [establishment of rhipicephalus sanguineus (latreille, 1806) inside houses in belgium]. | 1986 | 3718024 | |
| amitraz: a tick and flea repellent and tick detachment drug. | a topical formulation of amitraz (mitaban liquid concentrate, the upjohn company, kalamazoo, michigan, u.s.a.) was evaluated as a tick repellent and detachment agent, and flea repellent. the diluted liquid concentrate (250 p.p.m. active drug) was topically applied as a single treatment to dogs; the concentration was identical to the rate recommended for treatment of demodicosis and scabies. brown dog tick (rhipicephalus sanguineus) and american dog tick (dermacentor variabilis) populations were ... | 1986 | 3723659 |
| [3 infections by trypanosomes observed in hyalomma detritum, ixodes ricinus and rhipicephalus sanguineus (acarina: ixodidae)]. | 1986 | 3726517 | |
| brown dog tick and periorbital cellulitis. | 1986 | 3763430 | |
| isolation on "vero" cells of a spotted fever group rickettsia "mortilli strain" from rhipicephalus sanguineus. | the isolation of a spotted fever group (sfg) rickettsia "mortilli strain" from brown dog ticks rhipicephalus sanguineus removed from dogs associated with a confirmed case of boutonneuse fever (bf) in a site of a western sicily is reported. the need is stressed for isolation and adaption on cell cultures of sfg rickettsial strains for analysis of antigenic structure employing modern methodology. | 1986 | 3792517 |
| epidemiology of boutonneuse fever in western sicily: isolation of spotted fever group rickettsiae from rhipicephalus sanguineus (fam. ixodidae). | spotted fever group rickettsiae were isolated from dog ticks (r. sanguineus) removed from dogs in different areas of western sicily. | 1986 | 3951368 |
| ixodid tick attacks on man in israel: medical implications. | various species of ixodid ticks that have been recorded to attack man were surveyed, and boutonneuse fever caused by rickettsia conorii, which is transmitted in israel by rhipicephalus sanguineus s.l., is reviewed. only in one case were a complement fixation test and exact determination of the species of the tick performed. tick toxicosis and tick paralysis are discussed, and the possibility of human babesiosis and lyme disease or erythema chronicum migrans appearing in israel is considered. | 1986 | 3957641 |
| epidemiology of boutonneuse fever in western sicily. distribution and prevalence of spotted fever group rickettsial infection in dog ticks (rhipicephalus sanguineus). | the distribution and prevalence of spotted fever group rickettsial infection in the ixodid dog tick rhipicephalus sanguineus were found to occur at a rate of 19.7% with variation related to geographic and sociooccupational factors. a higher rate of infection was demonstrated in ticks removed from dogs associated with documented cases of boutonneuse fever. the results fit into available clinical and seroepidemiologic data on rickettsia conorii infection in western sicily. | 1986 | 3513550 |
| ehrlichia canis-related polyarthritis in a dog. | ehrlichia canis-related polyarthritis was diagnosed in a 7-month-old boxer. the diagnosis was based on intraneutrophilic morulae found in synovial fluid specimens, thrombocytopenia, a positive result for indirect fluorescent antibody testing for e canis, the presence on the dog of the known vector of e canis infection (rhipicephalus sanguineus), and a favorable response to treatment with tetracycline hydrochloride. the dog has had no recurrence of lameness for 18 months after cessation of treatm ... | 1986 | 3533872 |
| [new procedures for the elimination of the brown dog tick (rhipicephalus sanguineus l.) without contaminating room air]. | 1986 | 3536413 | |
| interception of the brown dog tick, rhipicephalus sanguineus, infesting man. | 1986 | 16031283 | |
| [experimental transmission of monanema nilotica el bihari & coll., 1977, a filaria with skin-dwelling microfilaria parasitic in african murids]. | the value of monanema of murids as experimental models of ocular lesions due to onchocerciasis would be greatly increased if we could experiment with several host and parasite species since, in many cases, the lesions induced are more significant when the host-parasite association is poorly adapted. the life cycle of 2 isolates of monanema nilotica is completed, one from lemniscomys striatus from the central african republique and the other from arvicanthis niloticus of mali. as in m. globulosa, ... | 1985 | 3985535 |
| cytology and cytochemistry of male accessory sex glands in the dog tick, rhipicephalus sanguineus (l.) (acarina: ixodidae). | 1985 | 3993173 | |
| first case of introduction of the tick rhipicephalus sanguineus to czechoslovakia. | 1985 | 4007700 | |
| establishment of the tropical dog tick, rhipicephalus sanguineus, in a house in london. | 1985 | 4035949 | |
| some criteria and concepts about the taxonomic status of rhipicephalus sanguineus latr. and r. turanicus pomer. & matik. (ixodidae, acarina). | 1985 | 4056473 | |
| integumentary sense organs of adult rhipicephalus sanguineus latreille, 1806. | 1985 | 4093654 | |
| the possible use of integumentary sense organs as specific diagnostic mean for larvae and nymphs of rhipicephalus sanguineus and rhipicephalus turanicus. | 1985 | 4093655 | |
| seasonal incidence of rhipicephalus sanguineus (lat) (acarina) on a wild host hemiechinus auritus collaris (gray) (insectivora). | 1985 | 3835182 | |
| ectoparasitic infestation of dogs in bendel state, nigeria. | an investigation into ectoparasitic infestation of different breeds of dogs presented to four veterinary clinics in benin, sapele and auchi in bendel state of nigeria during the period january 1983 to december 1983 is presented. of a total of 820 dogs examined for ectoparasites 246 (30.00%) were infected by ticks, 226 (27.56%) by lice, 212 (25.85%) by fleas and 109 (13.29%) by mites. the species of ectoparasites identified and their prevalence rates were rhipicephalus sanguineus (19.5%), otobius ... | 1985 | 3836217 |
| rickettsia-like organisms in ticks and antibodies to spotted fever-group rickettsiae in mammals from northern mississippi. | studies were conducted from april through august during 1974 and 1975 on 30 randomly selected trapping sites in wall doxey state park, holly springs national forest, and 1.6 km south of the park in marshall county, mississippi to provide information on the occurrence of ticks involved in the maintenance and transmission of spotted fever-group rickettsiae in nature. of 365 animals (14 species) collected, 186 (51%) were parasitized by 4,169 ticks. species of ticks collected included: dermacentor v ... | 1985 | 3923212 |
| [preliminary studies on the occurrence of rickettsiae of the spotted fever group in rhipicephalus sanguineus captured in suburban areas]. | in the urban periphery of rome, two sub-zones could be distinguished, characterized by uncultivated steppeland and by small shacks with large quantities of domestic refuse, respectively. rhipicephalus sanguineus appeared to be typical of this second sub-zone. r. sanguineus adults and nymphae were captured in different seasonal periods and were checked for the prevalence of rickettsiae of the spotted fever (sf) group. moreover, larvae from hatched eggs, laid by captured r. sanguineus females, wer ... | 1985 | 3924079 |
| rickettsia conorii isolated from rhipicephalus sanguineus introduced into switzerland on a pet dog. | a tick/rickettsial survey in a household near geneva, switzerland, revealed that 30 (40%) of 75 nymphs and adults of the brown dog tick, rhipicephalus sanguineus, were infected with a rickettsial agent biologically and antigenically indistinguishable from r. conorii, the causative agent of boutonneuse fever. introduced in 1979 from either southern france or italy by the family's pet dog, the tick infestation had steadily increased until 1981 when control measures were initiated. during 1980 and ... | 1984 | 6202074 |
| isolation of thogoto virus from ticks in portugal. | an agent pathogenic for mice was isolated from rhipicephalus sanguineus ticks collected from goats from vila vicosa , portugal. the virus was shown serologically to be closely related to or identical with thogoto virus, which had previously been isolated from ticks over a wide geographic area including sicily, the african continent, and iran. | 1984 | 6203388 |
| susceptibility of the brown dog tick (acari: ixodidae) to fresh residues of acaricides: laboratory assays and comparison of susceptibility of different life stages of the lone star and american dog tick. | 1984 | 6480979 | |
| behavioural responses of rhipicephalus sanguineus, r. turanicus and r. guilhoni ticks to relative humidity, light and host odour. | 1984 | 6512310 | |
| experimental transmission of the texas strain of hepatozoon canis. | nine dogs were fed hepatozoon canis-exposed rhipicephalus sanguineus ticks; 6 showed clinical signs suggestive of canine hepatozoonosis, and the parasite was found in sections of muscle tissue from 2 of the dogs. schizont-like cysts were found in the skeletal muscle of both infected dogs as were gametocytes in the circulating leucocytes. periosteal new-bone lesions were seen in 1 dog. attempts to infect a raccoon, 3 cats, 6 laboratory mice, and tick- or canine-cells in vitro, failed. | 1984 | 6542719 |
| the occurrence of the brown dog tick, rhipicephalus sanguineus (latr. 1806), a possible vector of the spotted fever group rickettsiae, on sheep in the negev region in israel. | 1984 | 6546817 | |
| metazoan parasites of dogs in sabah, malaysia. | the parasites which occurred most frequently in 175 owned or stray dogs in sabah were ancylostoma spp. present in 68% of the animals. dirofilaria immitis occurred in 70% of the adult dogs but neither d. immitis nor spirocerca lupi were present in puppies under four months of age. the latter attained a prevalence of 30% in the adults. in contrast toxocara canis occurred in 81% of the puppies but infrequently in older dogs. dipylidium caninum was moderately prevalent (15 to 25%) in dogs of all age ... | 1984 | 6730003 |
| babesiosis in the greyhound. | babesiosis was diagnosed in five 11- to 18-day old greyhound pups. in 3 pups, babesia canis organisms were identified by examination of a wright's-giemsa-stained smear of blood. in 2 pups, the diagnosis was established by examination of a splenic impression smear obtained at necropsy. findings in the 3 clinical cases included depression, weakness, anorexia, pallor, anemia, and thrombocytopenia. subcutaneous administration of diminazene aceturate resulted in rapid clinical recovery in these cases ... | 1983 | 6853321 |
| tick repellents ii: n-substituted azacyclopentanones and azacyclopentenones. | several n-substituted azacyclopentanones and azacyclopentenones were synthesized and evaluated as repellents for the brown dog tick rhipicephalus sanguineus. several of these compounds were more effective in our test system than were the standard repellents, n,n-diethyl-m-toluamide and butopyranoxyl. | 1983 | 6644605 |