Publications

the temperature and humidity preferences of haemaphysalis longicornis, ixodes holocyclus and rhipicephalus sanguineus (ixodidae): studies on eggs.		1979	571858
natural occurrence of coxiella burnetii in the brown dog tick rhipicephalus sanguineus.		1980	7191407
accidental importation of the brown dog tick, rhipicephalus sanguineus.		1980	6937810
[the brown dog tick rhipicephalus sanguineus latreille 1806 in the netherlands, an analysis of imported cases, including their veterinary and medical significance (author's transl)].	eighteen cases of infestation with rhipicephalus sanguineus were reported during the past five years. of the cases, six were observed during the first seven months of 1979. of all infestations, four originated from sources within the territory of the netherlands. several cases of infestation with canine babesiosis were reported. there could have been a relationship between some of these cases and infestation with r. sanguineus. populations of this tick can survive and develop in dutch homes. for ...	1980	7368198
rhipicephalus sanguineus latreille, the causative agent of foreign body in the ear: distribution on the body of dog.		1980	7420007
the temperature and humidity preferences of haemaphysalis longicornis, ixodes holocyclus and rhipicephalus sanguineus (ixodidae): studies on engorged larvae.		1981	7228486
observation on the saliva and salivary gland extract of haemaphysalis spinigera and rhipicephalus sanguineus sanguineus.	intracutaneous injection of histamine acid phosphate (hap) and salivary gland extract (sge) of haemaphysalis spinigera and rhipicephalus sanguineus sanguineus into sensitized and nonsensitized rabbits previously injected intravenously with evans blue indicated that the ticks' saliva contained a pharmacodynamic substance in addition to having antigenic properties. a primary skin reaction in nonsensitized rabbits produced by this pharmacodynamic substance within 30 min was amplified by a more exte ...	1981	7229815
[characteristics of the "tache noire" of boutonneuse fever].	humans show little sensitivity to the bites of healthy rhipicephalus sanguineus and the skin lesion is extremely slight. the "tache noire" - innoculation eschar - corresponding to the infecting bite of the tick with r. conori is discussed and histopathological findings reported. the patient is frequently unaware of the eschar on his body and elements relating to the duration of the infecting bite are deduced. apart from its typical features, the tache noire may be very small, with surrounding hy ...	1981	7254648
cutaneous basophil responses and immune resistance of guinea pigs to ticks: passive transfer with peritoneal exudate cells or serum.	resistance to infestation by larval amblyomma americanum or rhipicephalus sanguineus ticks was transferred to naive guinea pigs with peritoneal exudate cells (pec) or serum from donors immunized by prior infestation with homologous tick larvae. in the a. americanum system, pec transfer induced 87% tick rejection, which was similar to the level of resistance in actively sensitized hosts. in the r. sanguineus system, pec conferred resistance (39% rejection) that was weaker than in actively sensiti ...	1981	7299125
water vapour absorption and transpiration in the brown dog tick rhipicephalus sanguineus latr. (ixodidae, acarina).		1981	7299145
trials on cross-mating between three species of rhipicephalus sanguineus group (ixodoidea : ixodidae).		1981	7299168
a note on attachment sites of rhipicephalus sanguineus (lat.) (acarina) on indian hedgehog hemiechinus auritus collaris (gray) (insectivora : erinacidae).		1981	7343595
change in weight and mortality rate of adult rhipicephalus sanguineus latreille, 1806 (ixodoidea : ixodidae) conditioned at different relative humidities.		1982	7086232
parasites of domestic and wild animals in south africa. xiv. the seasonal prevalence of rhipicephalus sanguineus and ctenocephalides spp. on kennelled dogs in pretoria north.	the seasonal prevalence of rhipicephalus sanguineus and ctenocephalides spp. on kennelled dogs in pretoria north was determined by the regular examination of 3, initially, and later 2 dogs from march 1975--january 1977. once the ticks had become established in the kennel peak burdens of immature ticks (larvae plus nymphae) were present on the dogs during early summer 1975 and from midsummer--late summer 1976 and early midsummer 1976/77. peak numbers of adult ticks were present in midsummer 1975/ ...	1982	7122067
prevalence of cattle ticks in morocco.	during july 1980 the prevalence of cattle ticks was studied in 4 bioclimatic regions of morocco. all the 24 farms examined were infested. the mean number of ticks per animal varied from 6.5 to 36.3 in different regions. eight species of ticks were identified: hyalomma marginatum, h. detritum, h. lusitanicum, h. anatolicum, boophilus annulatus, rhipicephalus sanguineus, r. turanicus, r. bursa. numerically h. detritum (30.8%) h. marginatum (25.5%) and b. annulatus (29.2%) were most important. the ...	1982	7123663
effect of medium supplements on tick cells in culture.	the growth of tick cells in leibovitz's l--15 medium supplemented with various concentrations of fetal bovine serum (fbs), tryptose phosphate broth (tpb), and tick egg extract (tee) was evaluated using a protein assay. a continuous cell line from rhipicephalus appendiculatus (ra 243) was compared with young lines of cells isolated from embryos of r. appendiculatus (rae 25) and rhipicephalus sanguineus (rse 8). we found fetal bovine serum and tryptose phosphate broth both to be essential suppleme ...	1982	7131199
immune serum transfer of cutaneous basophil-associated resistance to ticks: mediation by 7sigg1 antibodies.	guinea pigs acquired resistance to amblyomma americanum larval ticks after one infestation, resulting in 46% tick rejection when challenged. intravenous transfer of immune serum from twice-infested hosts to naive animals conferred a significant level of immunity resulting in 18 to 30% tick rejection. the minimum effective dose of serum was 3 ml per recipient, and heating the serum at 56 degrees c for 4 hr had no effect on serum activity. fractionation of whole immune serum by gel filtration chro ...	1982	7142697
scavenging dogs and the spread of tick infestation in nigeria.	a dog, on whose body ticks were found early in january, 1977, was kept in the household during the night but allowed to scavenge during the day without the ticks being removed throughout the year. weekly counts of the number of different stages of ticks found on the body were made and the behaviour of the engorged dropped ones was studied. the preoviposition, oviposition and preeclosion periods of replete ticks were also studied. rhipicephalus sanguineus and haemaphysalis leachi leachi were the ...	1982	7169311
[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
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
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
observations on the epidemiology of house infesting rhipicephalus sanguineus in a household in lagos, nigeria.		1982	7186809
[transmission of babesia microti by nymphs of dermacentor marginatus, d. reticulatus, haemaphysalis punctata, rhipicephalus sanguineus and ixodes hexagonus].		1982	7080616
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
susceptibility of indian dog tick rhipicephalus sanguineus (latreille) to insecticides.		1983	6674328
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
behavioural responses of rhipicephalus sanguineus, r. turanicus and r. guilhoni ticks to relative humidity, light and host odour.		1984	6512310
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
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
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
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
seasonal incidence of rhipicephalus sanguineus (lat) (acarina) on a wild host hemiechinus auritus collaris (gray) (insectivora).		1985	3835182
[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
[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
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
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
[establishment of rhipicephalus sanguineus (latreille, 1806) inside houses in belgium].		1986	3718024
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. 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
[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
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
interception of the brown dog tick, rhipicephalus sanguineus, infesting man.		1986	16031283
[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
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
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
[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
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
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
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
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
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
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
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
[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
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
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
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
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
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
tick information sheet. the brown dog tick. rhipicephalus sanguineus.		1991	2014631
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
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
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
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
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
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
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
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
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