Publications

the australian brown dog tick rhipicephalus sanguineus as an experimental parasite of cattle and vector of anaplasma marginale.	experiments were done to explore the possible relationship between cattle, australian dog ticks (rhipicephalus sanguineus) and anaplasma marginale. calves' ears were exposed to larval, nymphal and adult ticks on 8, 9 and 7 occasions, respectively. the immature instars fed readily, but the adults attached very poorly to calves. transtadial transmission of a. marginale was achieved on 6 occasions from 9 attempts: ticks infected as larvae or nymphs were able to transmit at the subsequent stage or s ...	1982	7082237
[transmission of babesia microti by nymphs of dermacentor marginatus, d. reticulatus, haemaphysalis punctata, rhipicephalus sanguineus and ixodes hexagonus].		1982	7080616
accidental importation of the brown dog tick, rhipicephalus sanguineus.		1980	6937810
[presence, in ticks from the geneva region, of infective larvae which may be related to the dog filaria dipetalonema grassii].	about forty infective filarial larvae were collected from rhipicephalus sanguineus (two ticks positive out of about 50 examined) living inside a house and presumably originally transported from the south of france or toscana. the larvae are of the genus dipetalonema; they are distinct from infective stages of the three most common european species, d. dracunculoides and d. reconditum from dogs and d. rugosicauda from roe deer. they may however be larvae of d. arassii (noé, 1907), a dog filarid w ...	1982	6891996
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
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
susceptibility of indian dog tick rhipicephalus sanguineus (latreille) to insecticides.		1983	6674328
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
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
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
behavioural responses of rhipicephalus sanguineus, r. turanicus and r. guilhoni ticks to relative humidity, light and host odour.		1984	6512310
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
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
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
anopheles stephensi and toxorhynchites amboinensis: aseptic rearing of mosquito larvae on cultured cells.	aseptic larvae of anopheles stephensi and toxorhynchites amboinensis were reared on a continuous cell line (ru tae 12 v) from the mosquito, t. amboinensis, that grew in suspension as multicellular vesicles. surface-sterilized eggs were hatched in a 24-well plate containing 0.2 ml of leibovitz's l-15 medium per well and incubated in a humidified atmosphere. toxorhynchites amboinensis eggs of 36 hr or older were placed singly to assure hatching and avoid cannibalism. hatching rates were over 80%. ...	1982	6129294
physical and biological factors affecting the longevity and oviposition of engorged rhipicephalus sanguineus female ticks.		1967	6022398
isolation of a virus (wad medani) from rhipicephalus sanguineus collected in sudan.		1966	5901632
comparative changes in external respiration rates of engorged rhipicephalus sanguineus female ticks with age and oviposition in different physical environments.		1968	5757660
[on the occurrence of rhipicephalus sanguineus (latreille 1806) in germany].		1968	5756446
[distribution and biology of tick rhipicephalus sanguineus latr. in the crimea].		1968	5734364
mechanical removal of rhipicephalus sanguineus from the dog.		1968	5691640
changing infestation rates of rhipicephalus sanguineus (latreille) (ixodidae) ticks on dogs on singapore island, 1965-1966.		1971	5554999
[existence of the brown dog tick, rhipicephalus sanguineus, in denmark].		1970	5468580
neutrophils: their role in the formation of a tick feeding lesion.	dogs infested with adtult rhipicephalus sanguineus were given nitrogen mustard to reduce leukocyte numbers. in the treated animals the tick lesions were insignificant, lacking the collagen destruiction found in untreated hosts, bitt the ticks engorged normally. feeding results from tick secretions causing vascitlar trauima and is independent of tissute damage associated with inflammatory responses.	1970	5411168
rhipicephalus sanguineus: amino acid composition of egg shell.		1971	5167722
survival of rickettsia conori in nymphal rhipicephalus sanguineus ticks at different temperatures.		1971	5159249
cytogenetics of ticks (acari: txodoidea). 9. chromosomes of rhipicephalus sanguineus (latreille) and effects of gamma radiation on spermatogenesis.		1972	5057239
[immune reaction in rabbits and guinea pigs during repeated feeding on them of ixodid ticks rhipicephalus sanguineus (latr., 1806)].		1972	5055829
hormonal rupture of larval diapause in the tick rhipicephalus sanguineus (lat.).		1972	5045164
insecticides tested for control of nymphal brown dog ticks by the "tea-bag" technique.		1972	5008960
rhipicephalus sanguineus: sequential histopathology at the host-arthropod interface.		1974	4846421
fumigants for quarantine control of the adult brown dog tick: laboratory studies.		1973	4770951
[epizootics due to rhipicephalus sanguineus (latreille 1806) in germany].		1973	4751659
transmission of haemobartonella canis by the dog tick, rhipicephalus sanguineus.		1973	4736045
morphological variability, host range and distribution of ticks of the rhipicephalus sanguineus complex in israël.		1974	4440994
[on the tick rhipicephalus sanguineus latr.--the vector of marseilles fever].		1966	4241249
testing acaricide susceptibility of the brown dog tick rhipicephalus sanguineus (latreille, 1806). ii teabag method.		1974	4220144
testing acaricide susceptibility of the brown dog tick, rhipicephalus sanguineus (latreille, 1806), with a disposable pipette method.		1973	4213418
the possible use of integumentary sense organs as specific diagnostic mean for larvae and nymphs of rhipicephalus sanguineus and rhipicephalus turanicus.		1985	4093655
integumentary sense organs of adult rhipicephalus sanguineus latreille, 1806.		1985	4093654
some criteria and concepts about the taxonomic status of rhipicephalus sanguineus latr. and r. turanicus pomer. & matik. (ixodidae, acarina).		1985	4056473
establishment of the tropical dog tick, rhipicephalus sanguineus, in a house in london.		1985	4035949
first case of introduction of the tick rhipicephalus sanguineus to czechoslovakia.		1985	4007700
cytology and cytochemistry of male accessory sex glands in the dog tick, rhipicephalus sanguineus (l.) (acarina: ixodidae).		1985	3993173
[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
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: 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
[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-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
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
seasonal incidence of rhipicephalus sanguineus (lat) (acarina) on a wild host hemiechinus auritus collaris (gray) (insectivora).		1985	3835182
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
brown dog tick and periorbital cellulitis.		1986	3763430
[3 infections by trypanosomes observed in hyalomma detritum, ixodes ricinus and rhipicephalus sanguineus (acarina: ixodidae)].		1986	3726517
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
[establishment of rhipicephalus sanguineus (latreille, 1806) inside houses in belgium].		1986	3718024
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
[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
[new procedures for the elimination of the brown dog tick (rhipicephalus sanguineus l.) without contaminating room air].		1986	3536413
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
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
[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
[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
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
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
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
introduction of the tick rhipicephalus sanguineus to czechoslovakia: an additional case.		1989	2767559
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
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
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
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
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
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
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
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
[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
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 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
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
[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
tick information sheet. the brown dog tick. rhipicephalus sanguineus.		1991	2014631
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
the control of ticks, fleas and lice on dogs by means of a sendran--impregnated collar.	plastic collars impregnated with 9,4% sendran effectively controlled adult rhipicephalus sanguineus for a period of 49 days and immature ticks for a period possibly in excess of 70 days when fitted to four dogs. four uncollared dogs served as controls. although flea burdens were extremely low the collars were apparently effective for a period in excess of 70 days. a medicated collar killed all the ticks, fleas and lice on a severely parasited dog within a period of 48 hours.	1976	1263190
transmission of ehrlichia canis to dogs by ticks (rhipicephalus sanguineus).	two strains of rhipicephalus sanguineus acquired ehrlichia canis by feeding as either larvae or nymphs on acutely infected dogs and, in subsequent instars, transmitted the agent to normal dogs. three strains of r sanguineus transmitted e canis as adults after their larval and nymphal stages fed on infected dogs. more than 400 adult female ticks were fed on infected dogs as larvae or nymphs or both, but none transmitted e canis transovarially.	1975	1147359
letter: the brown dog tick (rhipicephalus sanguineus) on an imported dog.		1975	1060961