effects of gamma radiation on spermatogenesis and fertility of male amblyomma americanum (acari: ixodidae).amblyomma americanum males were treated with 0.5, 1, 2, 3, 4, 8, and 16 krad of gamma radiation. testes of ticks treated with 2, 3, 4, 8, and 16 krad were smaller than those of ticks irradiated at lower levels and controls. no recognizable alteration in timing of spermatogenesis was noted among the different radiation groups, but severe breakdown and depletion of germinal cells was noted at 4, 8, and 16 krad. percent hatch of larvae from crosses of irradiated males and untreated females decrease ...19873585625
hematological changes in white-tailed deer fawns, odocoileus virgianianus, infested with theileria-infected lone star ticks. 19734202517
ultrastructure of haller's organ in the tick amblyomma americanum (l.). 19724334800
control of 36c1 uptake by isolated salivary glands of the lone star tick. 19744412631
resistance of purebred brahman, hereford, and brahman times hereford crossbred cattle to the lone star tick, amblyomma americanum (acarina: ixodidae). 19744455918
computer simulation of population dynamics of the lone star tick, amblyomma americanum (acari: ixodidae). 19873585931
the ecology and behavior of the lone star tick (acarina: ixodidae). 3. the effect of season on molting time and post-molt behavior of engorged nymphs and adults. 19734707757
the ecology and behavior of the lone star tick (acarina: ixodidae). iv. the daily and seasonal activity patterns of adults in different habitat types. 19734744033
lone star tick: laboratory tests of acaricides. 19734770947
the effects of desiccation and rehydration on the lone star tick. 19734773930
the ecology and behavior of the lone star tick (acarina: ixodidae). v. abundance and seasonal distribution in different habitat types. 19734779928
fine structure of the central nervous system of dermacentor variabilis (say), amblyomma americanum (l.), and argas arboreus kaiser, hoogstraal, and kohls (ixodoidea). 19744852052
a method of collecting nymphal and adult lone star ticks, amblyomma americanum (l.) (acarina: ixodidae), from woodlots. 19725036200
fine structural analysis of palpal receptors in the tick amblyomma americanum(l.). 19725042252
effects of season and area on ectoparasites of white-tailed deer (odocoileus virginianus) in mississippi.nine species of ectoparasites (4 acari, 2 mallophaga, 1 anoplura, 1 diptera, and 1 siphonaptera) were recovered from 126 white-tailed deer collected in northern, central, and southern mississippi. intensity and prevalence of adults of ixodes scapularis and larvae, nymphs, and adults of amblyomma americanum varied significantly over collection periods, but not between host sexes. lipoptena mazamae occurred on deer from only one study area. although individual deer were heavily parasitized by tric ...19873586204
chemo-attraction in the lone star tick (acarina: ixodidae). i. response of different developmental stages to carbon dioxide administered via traps. 19725057498
preliminary observations on controlled burning for lone star tick (acarina: ixodidae) control in woodlots. 19725080432
the ecology and behavior of the lone star tick (acarina: ixodidae). i. the relationship between vegetative habitat type and tick abundance and distribution in cherokee co., oklahoma. 19715118876
the ecology of the lone star tick, amblyomma americanum (l.), in two contrasting habitats in virginia (acarina: ixodidae). 19715153583
the ecology and behavior of the lone star tick (acarina: ixodidae). ii. activity and survival in different ecological habitats. 19715153595
measurement of physical parameters to determine the suitability of modified woodlots as lone star tick habitat. 19715153596
water balance in the lone star tick (acarina: ixodidae): the effects of relative humidity and temperature on weight changes and total water content. 19715160247
amblyomma americanum: physiochemical isolation of a protein derived from the tick salivary gland that is capable of inducing immune resistance in guinea pigs.crude salivary gland derived proteins from amblyomma americanum ticks were analyzed by physiochemical (gel filtration and ion exchange chromatography) and immunochemical guinea pig igg1 (anti-tick immunoaffinity column) techniques for the presence of antigens responsible for the induction of host immune resistance responses. gel filtration (g-75 sephadex) and ion exchange (diethyl aminoethyl cellulose) chromatography of crude salivary gland antigen yielded multiple fractions, but only one fracti ...19863720900
ecology of tick vectors of american spotted fever.the author reviews the natural history of the tick vectors of american spotted fever. the discussion concerns the ecology of the rocky mountain wood tick, dermacentor andersoni, the american dog tick, dermacentor variabilis, and the lone-star tick, amblyomma americanum, all of which are proven vectors of rocky mountain spotted fever to man. also included are the rabbit tick, haemaphysalis leporispalustris and dermacentor parumapertus, which very rarely bite man but which are considered of import ...19695306621
effect of age on the attachment rate of the parasitic stages of the lone star tick, amblyomma americanum (linnaeus) (acarina: ixodidae), in the laboratory. 19705435814
environmental alteration in recreational areas by mechanical and chemical treatment as a means of lone star tick control. 19705441234
serum basophil-stimulating activity in the guinea-pig during induction of basophilic responses to ovalbumin and tick feeding.we have described functional and biochemical characteristics of a distinct t-cell dependent guinea-pig basophil-stimulating factor (bsf), measured using a sensitive 7-day bone marrow culture assay, standardized with high-activity bsf present in serum-free splenic cell-conditioned medium (cm). in the present studies, the in vivo relevance of bsf was explored during protocols of induction of peripheral blood or tissue basophil responses to ovalbumin (oa) injection or amblyomma americanum tick feed ...19863733145
effect of age on the susceptibility of nymphs of the lone star tick to insecticides. 19705488795
fine structure of tarsal sensilla in the tick amblyomma americanum (l.). 19715541841
rejection of ticks from guinea pigs by anti-hapten-antibody-mediated degranulation of basophils at cutaneous basophil hypersensitivity sites: role of mediators other than histamine.previous studies have established that recruitment of basophils to sites of tick feeding in guinea pigs is required to effect immune resistance. in the current study, actively sensitized guinea pigs treated three times daily with h-1 (mepyramine) and h-2 (cimetidine) histamine receptor antagonists, during the challenge tick infestation period, expressed normal resistance to amblyomma americanum larvae. similarly, naive guinea pigs treated with anti-histamines four times daily, beginning 7 days b ...19852578152
arbovirus studies in the ohio-mississippi basin, 1964-1967. vii. lone star virus, a hitherto unknown agent isolated from the tick amblyomma americanum (linn). 19695810802
control of the lone star tick on cattle. 19676081042
habitat use by cattle affects host contact with lone star ticks (acari: ixodidae).the location of zebu, british, and zebu x british cattle in tick-infested plots from march through september 1986 was compared with the location of amblyomma americanum l. in the same plots. in april, may, and june, zebu cattle spent less time (9.3-19.4%) in tick-infested quadrats than british (44.4-63.9%) or zebu-british (49.0-69.3%) cattle. in the same months, the probability that a. americanum would contact zebu cattle (1.5-19.6%) was significantly lower than for british (34.7-41.7%) or zebu- ...19892754101
polyfluoro 1,3-diketones as systemic insecticides.a series of aryl polyfluoro 1,3-diketones were examined for systemic ectoparasiticidal activity in cattle. the compounds demonstrated efficacy against several economically important species of insects and acarina. at dosages of 5 mg/kg x1 or 0.35 mg/kg per day intraruminally, activity was observed against blowfly larvae (phormia regina), adult stable fly (stomoxys calcitrans), and lone star tick (amblyomma americanum). in vivo activity was not directly related to in vitro activity, showing a str ...19892769686
effect of age on cholinesterase activity and protein of unfed larval ticks.the cholinesterase (ache) activity and total protein in homogenates of unfed larvae of amblyomma americanum (l.), a. cajennense (fabricius), a. maculatum koch, anocentor nitens neumann, and boophilus microplus (canestrini) were determined weekly in ticks 1-6 wk of age. there was a considerable variation in total protein, ache, and the ratio of ache to protein as the ticks aged. however, ache activities were constant or increased with age and total protein levels were constant or decreased. no di ...19892918444
failure to detect infection in fallow deer (cervus dama) exposed to theileria cervi from white-tailed deer.a frozen stabilate was produced from theileria cervi sporozoites in salivary glands of adult amblyomma americanum. the stabilate was inoculated into three fallow deer (cervus dama) and two white-tailed deer (odocoileus virginianus). following inoculation, the white-tailed deer developed parasitemias as determined by blood smear examination at 11 and 13 days postexposure. repeat examination of blood from the three fallow deer for 30 days postexposure failed to reveal observable piro-plasms. these ...19873119873
ultralow-volume mists of chlorpyrifos from a tractor-mounted blower for area control of the lone star tick (acari: ixodidae). 19846210316
the ultrastructure of sporogony in theileria cervi (bettencourt et al., 1907) in salivary glands of female amblyomma americanum (l.) ticks.the process of sporogony of theileria cervi in salivary glands of unfed and feeding amblyomma americanum females that were infected as nymphs was studied by light and electron microscopy (sem and tem). sporogony was observed only in granular acini type iii and in cells classified as complex granular. infected acini in salivary glands of both unfed and feeding ticks were enlarged. some stages of parasite development were evident with light microscopy and sem, but the specific events of sporogony ...19873125313
economic thresholds for lone star ticks (acari: ixodidae) in recreational areas based on a relationship between co2 and human subject sampling. 19836408150
susceptibility of amblyomma americanum to natural and experimental infections with theileria hundred fifty amblyomma americanum were examined between march and september 1986 from cookson hills wildlife refuge in eastern oklahoma (usa). of these ticks, 11% (17 of 150) were infected with theileria cervi. field-collected nymphal ticks had an 8% (3 of 37) prevalence of infection averaging 1.0 infected acini/nymph. female ticks had a 16% prevalence of infection averaging 1.6 infected acini/female; t. cervi was not observed in salivary glands of field-collected male ticks. when laborator ...19883193564
trypanosomes in amblyomma americanum from oklahoma. 1976978370
ticks on white-tailed deer fawns from southern illinois.seventy-six white-tailed deer (odocoileus virginianus (zimmermann] fawns captured on crab orchard national wildlife refuge in southern illinois during june-july 1980-1983 were aged and examined for ticks. the prevalence of ticks (amblyomma americanum (linnaeus, 1758) and dermacentor variabilis (say, 1821] was 80%; intensity of infestation ranged from one to 123 ticks per fawn, averaging 21.6. tick intensity correlated poorly with age suggesting that there were other, more important determinants ...19846530716
electrophoretically detectable protein variation in natural populations of the lone star tick, amblyomma americanum (acari: ixodidae).nine populations of amblyomma americanum (l.) were examined electrophoretically for variation of 21 enzymes. only three enzymes were not polymorphic and the average heterozygosity per individual (h) for the species was 0.085 with a range of 0.077 to 0.110, comparing well with values in other arthropods. the average nei identity value for pairwise comparisons among the nine populations was high, 0.994 +/- 0.004 (i +/- sd). these high identity values and the absence of geographic structuring of th ...19863744877
a seed tick infestation of the conjunctiva: amblyomma americanum larva.ticks commonly infest humans but rarely bite the eyes. they are vectors of disease; therefore, rapid and complete removal is important. their attachment can be so secure that removal is difficult or hazardous. we excised a larval form of amblyomma americanum from a woodsman's conjunctiva.19873566026
pheromone-induced aggregation of ixodid ticks before host contact.the presence of a pre-feeding aggregation pheromone was demonstrated in the species dermacentor variabilis, dermacentor andersoni, dermacentor parumapertus, amblyomma americanum and haemaphysalis leporispalustris by assay within a petri dish. however, amblyomma maculatum and amblyomma cajennense did not aggregate in the sector containing discs of presumed pheromone within the hour period. d. andersoni and a. americanum recognized each other's pheromone and a. americanum recognized that of h. lep ...19836683667
effect of host age on the expression of acquired resistance to ticks.young guinea-pigs (350 g) expressed significantly greater levels of acquired resistance to challenge by larval amblyomma americanum ticks than older guinea-pigs (520-800 g). this finding suggests that younger guinea-pigs are immunologically more responsive to tick infestation than older mature individuals. therefore, host age is an important variable in evaluating acquired resistance to ticks.19846698176
amblyomma americanum: a potential vector of lyme disease in new jersey.amblyomma americanum is a likely secondary vector of lyme disease in new jersey. ticks of this species were removed from the site of the characteristic skin lesion known as erythema chronicum migrans on two patients with the disease, and the lyme disease spirochete was isolated from nymphs and adults of this species. that a. americanum is a potential vector is supported by its similarities to ixodes dammini, the known tick vector, in seasonal distribution and host utilization. the extensive rang ...19846710158
ixodid ticks on feral swine in florida.more than 99% of the 645 feral swine (sus scrofa l.) in southern florida harbored ixodid ticks. dermacentor variabilis (american dog tick) was present on 99.6% of the swine and comprised 82.5% of the ticks collected. amblyomma maculatum (gulf coast tick) occurred on 85.9% of the hosts and 17.4% of the collections were of this species. amblyomma americanum (lone star tick) and ixodes scapularis (black-legged tick) were found infrequently and together constituted less than 0.1% of the ticks. pigs ...19846737605
antibodies to spotted fever-group rickettsiae in dogs and prevalence of infected ticks in southern connecticut.blood samples and ticks were obtained from dogs to assess canine exposure to spotted fever-group (sfg) rickettsiae during 1978-1980 in southern connecticut. of the 1,576 dog sera screened by microimmunofluorescence. 174 (11.0%) contained specific antibodies at titers greater than or equal to 1:64 against rickettsia montana (n = 34), r rickettsii (n = 31), r rhipicephali (n = 19), or the unclassified 369-c rickettsia (n = 90). end points greater than or equal to 1:8,192 to r rickettsii and to r r ...19826803626
strategic treatment of pastured beef cattle with acaricides: effect on populations of the lone star tick (acari: ixodidae). 19836826885
metazoan parasites of the eastern cottontail rabbit in western kentucky.forty-five eastern cottontail rabbits (sylvilagus floridanus allen), collected over a 15 mo period from two areas of western kentucky, were examined for disease conditions, helminth and arthropod parasites. a single lymphosarcoma, two cutaneous papillomas and the following parasites were identified: hasstilesia tricolor, taenia pisiformis, cittotaenia variabilis, raillietina stilesiella, obeliscoides cuniculi, trichuris leporis, longistriata noviberiae, trichostrongylus calcaratus, dermatoxys ve ...19836842731
pressurized sprays of permethrin and deet on clothing for personal protection against the lone star tick and the american dog tick (acari: ixodidae). 19836875081
systematic efficacy of ivermectin mk-933 against the lone star tick. 19826896882
protein changes in the salivary glands of the female lone star tick, amblyomma americanum, during feeding. 19827077436
spotted fever group rickettsiae in the lone star tick, amblyomma americanum (acari: ixodidae). 19863772952
systemic activity of closantel for control of lone star ticks, amblyomma americanum (l.), on cattle.cattle were treated once at 5 mg/kg orally or subcutaneously or daily at 0.1-5 mg/kg orally or 0.1-1 mg/kg subcutaneously with closantel, n-[5-chloro-4-[(4-chlorophenyl)cyanomethyl]-2-methylphenyl]-2-hydroxy-3, 5-diiodobenzamide, and numbers and weights of engorged females, weights of egg masses and hatch of eggs of lone star ticks, amblyomma americanum, were recorded. effectiveness of treatments on reproduction was determined by comparing total estimated larvae (el) (el = wt. egg mass x est. % ...19853870959
growth in lone star ticks, amblyomma americanum (acari: ixodidae), feeding on cattle: a laboratory study. 19827120307
regulation of feeding and ovipositional success of amblyomma americanum ticks. 19827128750
intradermal infestation of a red fox (vulpes vulpes) by the lone star tick (amblyomma americanum). 19863951048
antibody- and cell-mediated immune resistance by guinea pigs to adult amblyomma americanum ticks.naive and actively and passively sensitized guinea pigs were infested with adult amblyomma americanum ticks. naive hosts allowed for 75-81% tick yield, 518-581 mg mean tick weight and an average tick feeding period of 12-13 days. actively sensitized and challenged hosts, however, allowed only 47% tick yield (38.9% rejection), replete individuals were significantly reduced in weight (66.1% weight decrease) and required slightly longer time to feed (14 days). passively sensitized hosts were given ...19827149113
pressurized sprays of permethrin on clothing for personal protection against the lone star tick (acari: ixodidae). 19827161438
field method for evaluating the effectiveness of acaricides against lone star ticks (acari: ixodidae) on domestic dogs. 19853973208
apparatus for artificial infestation of pastured beef cattle with the lone star tick (acari: ixodidae). 19853998270
suitability of birds and mammals as hosts for immature stages of the lone star tick, amblyomma americanum (acari: ixodidae). 19817288841
human infestation by amblyomma americanum larvae ("seed ticks"). 19854002011
human 'seed tick' infestation. amblyomma americanum larvae. 19817316562
success of tick feeding on calves immunized with amblyomma americanum (acari: ixodidae) extract. 19817265136
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 ...19827142697
acaricide susceptibility in the lone star tick: assay techniques and baseline data. 19817320318
evidence for a d1 dopamine receptor in the salivary glands of amblyomma americanum (l.).adenylate cyclase from the salivary gland of the lone star tick, amblyomma americanum, is stimulated by several derivatives of phenylethylamine; dopamine, noradrenaline, adrenaline and isoproterenol. octopamine and iota-dopa had no effect on basal adenylate cyclase activity. dopamine had the highest potency and the lowest ka, 0.4 micron; followed by adrenaline and noradrenaline, 23 micron; and isoproterenol, 0.15mm. when either noradrenaline or adrenaline was added to dopamine, each at its maxim ...19817346526
control of the lone star tick in oklahoma parks through vegetative management. 19817320314
weight changes in individual feeding amblyomma americanum female ticks. 19854093818
permeability of tarsal sensilla in the tick amblyomma americanum l. (acarina, ixodidae). 19724647364
neurons sensitive to 2,6-dichlorophenol on the tarsi of the tick amblyomma americanum (acari: ixodidae). 19817328604
amblyomma americanum: sequential histological analysis of larval and nymphal feeding sites on guinea pigs. 19807364007
activity of repellents applied to skin for protection against amblyomma americanum and ixodes scapularis ticks (acari: ixodidae).twenty-nine repellents were tested on human skin for duration of activity as protectants against nymphal lone star ticks (amblyomma americanum) and against black-legged or deer ticks (ixodes scapularis say). eleven of these repellents, including deet, provided > 2 h of protection against the lone star tick. one repellent, 1-(3-cyclohexenyl-ylcarbonyl) piperidine, was effective > or = 4 h. four repellents (2 pyridines and 2 piperidines with protection lasting 2.3-3 h) showed acaricidal activity t ...19957616181
experimental transmission of ehrlichia chaffeensis (rickettsiales: ehrlichieae) among white-tailed deer by amblyomma americanum (acari: ixodidae).ehrlichia chaffeensis anderson, dawson & wilson, causative agent of human (predominantly monocytic) ehrlichiosis, was successfully transmitted experimentally by amblyomma americanum (l.) to white-tailed deer, odocoileus virginianus (zimmerman). deer were needle-exposed intravenously to e. chaffeensis in tissue-culture canine macrophage (dh82) cells, and 11 d later were exposed to laboratory-reared a. americanum larvae, nymphs, and adults for acquisition feeding. three months after this feeding, ...19957616529
amblyomma americanum: sequential histological analysis of adult feeding sites on guinea pigs. 19807371734
fecundity and development of the lone star tick on woodlot-pastured braford and hereford heifers. 19807430489
engorgement and reproduction of lone star ticks (amblyomma americanum (l.)) treated with gamma-radiation. 19665296972
evaluation of ixodes scapularis, amblyomma americanum, and dermacentor variabilis (acari: ixodidae) from georgia as vectors of a florida strain of the lyme disease spirochete, borrelia burgdorferi.the ability of three common tick species from georgia to maintain and transmit the causative agent of lyme disease, borrelia burgdorferi, was compared under laboratory conditions. a b. burgdorferi cotton rat isolate (mi-6) from florida was selected as a strain from the south, and the sh2-82 isolate from new york was used as a positive control. amblyomma americanum (l.) and dermacentor variabilis (say) did not transmit the mi-6 isolate from inoculated hamsters to naive laboratory mice, and nympha ...19957650697
lower temperature limits for activity of several ixodid ticks (acari: ixodidae): effects of body size and rate of temperature change.uncoordinated activity threshold temperature, the temperature below which ticks can no longer seek a host in a coordinated manner, and the activity threshold temperature, when all activity ceases, were examined for three species of ticks found in coastal sections of new york. the mean uncoordinated activity threshold and activity threshold temperatures were determined for nymphal, female and male ixodes scapularis say, nymphal, female, and male amblyomma americanum (l.), and for female and male ...19957650705
ectoparasites collected from bobwhite quail in the southeastern united states.twenty-one species of ectoparasites representing 19 genera were collected from 481 bobwhite quail (colinus virginianus) from nine areas in four southeastern states. sixteen species, amblyomma americanum, haemaphysalis chordeilis, haemaphysalis leporispalustris, eutrombicula alfreddugesi alfreddugesi, neoschoengastia americana, boydaia colini, pterolichus sp., colinophilus wilsoni, megninia sp., apionacarus wilsoni, colinoptes cubanensis, menacanthus pricei, colinicola numidiana, gonoides ortygis ...19807463603
borrelia burgdorferi in eastern virginia: comparison between a coastal and inland virginia, borrelia burgdorferi was more prevalent in a site along the atlantic ocean, near maryland, than in an inland site near williamsburg and yorktown. at the coastal site on assateague island, b. burgdorferi was isolated from 4.2% of 475 animals sampled, including four species of small mammals. serologic tests indicated that 25-37% of the small rodents assayed had been exposed to b. burgdorferi. immunofluorescence antibody assays specific for b. burgdorferi showed spirochete infection in ...19957677212
experimental infection of six species of ixodid ticks with dugbe virus (family bunyaviridae, genus nairovirus).the vector potential of each of 6 species of colonized north american and african ixodid ticks was assessed by intracoelomic inoculation with dugbe virus (ibar 1792, 14th passage in suckling mouse brain) and viral titers were monitored after selected incubation periods. persistence of dugbe virus for greater than or equal to 53 days in 5 species (dermacentor andersoni, d. variabilis, amblyomma americanum, rhipicephalus appendiculatus, and r. sanguineus) indicates that infection occurred. viral t ...19892496609
wear and wash persistence of permethrin used as a clothing treatment for personal protection against the lone star tick (acari: ixodidae). 19826123602
ectoparasites of opossums and raccoons in southeastern georgia.twelve species of ectoparasites (four fleas, three ticks, three chiggers, one macronyssid mite, and one atopomelid mite) were recovered from 42 opossums, didelphis virginiana kerr, live-trapped from september 1992 through april 1994 in southeastern georgia. the fleas, ctenocephalides felis (bouché) (prevalence = 19%) and polygenis gwyni (c. fox) (36%); the ticks, dermacentor variabilis (say) (40%) and ixodes scapularis say (19%); and the macronyssid mite, ornithonyssus wernecki (fonseca) (21%), ...19947815408
cytosystematics of five north american amblyomma (acarina: ixodidae) species.the karyotypes of 5 species of amblyomma ticks found in north america were examined for the presence and location of constitutive heterochromatin (c-bands). all specimens examined had 20 autosomes and an xx:xo sex-determining system, with the x being the largest element in the karyotype. except as noted in text, the autosomes of all species were acrocentric and heterochromatin was restricted to the centromeric region. the third largest autosome in 4 of the 5 species displayed a consistent band o ...19957876973
area control of larvae of the lone star tick (acari: ixodidae) with acaricides. 19836186711
evidence supporting the presence of borrelia burgdorferi in missouri.although lyme disease is commonly seen in the southcentral united states, the epidemiology of the disease is poorly defined there. the purpose of this study was to document the presence of borrelia burgdorferi in ticks collected in southeastern missouri and around the city of st. louis. spirochetes were detected and identified as b. burgdorferi by immunofluorescent antibody (ifa) tests using the monoclonal antibody h5332 in 1.9% of amblyomma americanum and 2.0% of dermacentor variabilis ticks co ...19947943575
origin, accumulation and mobilization of salivary prostaglandin precursors in the lone star tick. 19947958372
ticks (acari: ixodidae) collected from small and medium-sized kansas species of hard-bodied ticks were collected from 20 species of small and medium-sized mammals in kansas; amblyomma americanum l., dermacentor variabilis (say), haemaphysalis leporispalustris (packard), ixodes cookei packard, i. kingi bishopp, i. sculptus neumann, and i. texanus banks. dermacentor variabilis was found statewide, a. americanum only in the eastern one-third of the state, and the ixodes spp. and h. leporispalustris were widely scattered. the most common tick found was d. varia ...19948057327
distribution of arachidonic acid among phospholipid subclasses of lone star tick salivary glands.the subclass composition of choline- and ethanolamine-containing phospholipids was determined by analysis of acyl-linked fatty acids released by base hydrolysis of diradylglycerobenzoates formed from lone star tick salivary gland diacyl, alkylacyl and alkenylacyl phospholipids. the diacyl subclass comprises 87% of all choline-containing phospholipids, while th alkylacyl subclass comprises c. 9% and the alkenylacyl subclass c. 4%. the diacyl subclass comprises 72-77% of ethanolamine-containing ph ...19948069331
aerial application of diazinon granules for area control of the lone star tick (acari: ixodidae). 19846512070
ehrlichiosis in a golf-oriented retirement community.ehrlichiosis due to ehrlichia chaffeensis usually occurs sporadically or in small clusters, with an annual incidence estimated at 3 to 5 cases per 100,000 population in areas of endemic disease. the putative principal vector is the lone star tick (amblyomma americanum). we investigated an outbreak of ehrlichiosis that occurred in june 1993 among members of a golf-oriented retirement community (community a) in tennessee. the community is densely wooded and borders a wildlife-management area where ...19957616991
spirochetes in ticks and antibodies to borrelia burgdorferi in white-tailed deer from connecticut, new york state, and north carolina.ticks were screened for spirochetes and serum samples from white-tailed deer (odocoileus virginianus) were assayed for antibodies to borrelia burgdorferi during 1983-1984. using fluorescein isothiocyanate-labeled rabbit antibodies produced to b. burgdorferi, the etiologic agent of lyme disease, spirochetes were detected in ixodes dammini (10.5% of 1,193) and dermacentor albipictus (0.6% of 157) adults from connecticut, i. dammini nymphs (49.1% of 108) and adults (64.7% of 99) from armonk, new yo ...19863520030
prevalence of borrelia (spirochaetaceae) spirochetes in texas ticks.between 1990 and 1992, ticks from eight texas parks were collected and analyzed to determine the prevalence of spirochete-infected ticks. borrelia spirochetes were detected in 1.03% of 5,141 amblyomma americanum (l.) adults examined, a species texas residents often encounter. no spirochetes were observed in the other tick species tested.19948189421
comparison of habitat modification, animal control, and standard spraying for control of the lone star tick. 19827142558
ticks (acari: ixodidae) infesting medium-sized wild mammals in southwestern species of ixodid ticks (n = 2,661) were found on medium-sized wild mammals (n = 295) during a 13-mo study in shelby county, tennessee. the seven tick species collected were dermacentor variabilis (say), amblyomma americanum (l.), rhipicephalus sanguineus (latreille), ixodes texanus (banks), i. cookei (packard), i. scapularis (say), and haemaphysalis leporispalustris (packard). the raccoon had the greatest tick species diversity in all of the aforementioned ticks except h. leporispalustris ...19938254637
changes in lipids of the salivary glands of the lone star tick, amblyomma americanum, during feeding.the lipid composition of salivary glands from male and female lone star ticks, amblyomma americanum, was investigated at progressive stages of tick feeding. the amounts of fatty acids from both phospholipid and neutral lipid fractions increased dramatically during the initial stage of feeding and peaked in partially fed females weighing 100-250 mg. percentage compositions of myristic (14:0) and palmitic acid (16:0) decreased, but stearic (18:0), oleic (18:1), linoleic (18:2), and arachidonic aci ...19938277375
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