Publications

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the effect of cattle tick (boophilus microplus) on beef production in the northern territory. 19715106909
mixtures of chlorphenamidine with other acaricides for the control of organ ophosphorus-resistant strains of cattle tick boophilus microplus. 19715120208
labelling larvae of the cattle-tick boophilus microplus, with 32 p to follow their movements on the host. 19715129806
alterations in host metabolism by the specific and anorectic effects of the cattle tick (boophilus microplus). 3. metabolic implication of blood volume, body water, and carcass composition changes. 19715159198
metabolism of chlorphenamidine in larvae of the cattle tick boophilus microplus. 19715163487
alterations in host metabolism by the specific and anorectic effects of the cattle tick (boophilus microplus). i. food intake and body weight growth. 19715280977
alterations in host metabolism by the specific and anorectic effects of the cattle-tick (boophilus microplus). ii. changes in blood composition. 19715280978
an experimental investigation into the effects of flooding on the ixodid tick boophilus microplus (canestrini).the effect of water immersion on the non-parasitic stages of boophilus microplus were investigated both under laboratory and field conditions. survival of engorged female ticks was influenced by their age and the temperature of the water. eggs and larvae were more resistant to submerison than were engorged females and their survival was increased at low temperatures and in water with high oxygen content. the persistence of this tick in areas prone to flooding was attributed to the survival of pa ...197128310970
new types of organophosphorus-resistant ticks (boophilus microplus). 19715102657
the mechanism of feeding and salivation in boophilus microplus (canestrini, 1887). 19715565392
development and survival of the tick boophilus microplus (can.) in laboratory and under natural conditions of cuba. 19715163210
sulphur and the cattle tick boophilus microplus. 19725013812
electrical studies on the feeding of the cattle-tick, boophilus microplus. 19725015014
the inheritance of resistance by cattle to cattle tick. 19725068812
control of the southern cattle tick by pour-on animal systemic insecticides. 19724639456
transmission of anaplasma marginale by the cattle tick boophilus microplus. 19724640755
preliminary studies on the transmission of anaplasma marginale by boophilus microplus. 19734689814
bioassay of chlorphenamidine using larvae of the cattle tick boophilus microplus. 19734711148
inheritance of dimethoate resistance in the mackay strain of the cattle tick (boophilus microplus) in australia. 19734717730
toxicity to boophilus microplus of formamidine acaricides and related compounds, and modification of toxicity by certain insecticide synergists. 19734770945
enzyme activity of the cytochrome system of the egg and larva of the cattle tick (boophilus microplus). 19734146220
detection of trypanosoma theileri in ethiopian cattle ticks. 19734149680
[a study on the ticks of chejudo: iv. monthly life flow of ticks]following is the result of a survey hold over a two year period(1971-1972), on the appearence and disappearence of ticks on cattle in cheju. number of haemaphysalis longicornis. larvae: from the beginning of july to mid september larvae abounded reaching their peak during july and august. in 1971 their period was from july to september. in 1972 their period was from may to october. in both years their number reached their highest point in july and august(table 1.2) nymph: ticks were found from f ...197312913490
culture of embryonic cells from the tick boophilus microplus (ixodidae). 19734760627
dopamine and noradrenaline in the salivary glands and brain of the tick, boophilus microplus: effect of reserpine. 19744435160
the soluble cuticular proteins form three arthropod species: scylla serrata (decapoda: portunidae), boophilus microplus (acarina: ixodidae) and agrianome spinicollis (coleoptera: cerambycidae). 19744214646
oviposition of boophilus microplus (canestrini) (acarida: ixodidae). ii. influence of temperature, humidity and light. 19744466310
oviposition of boophilus microplus (canestrini) (acarida : ixodidae). i. influence of tick size on egg production. 19744463680
[epizootiological study of theileriasis in korea: prevalence of the bovine theileriasis in relation to its vector, haemaphysalis (kaiseriana) longicornis neumann. 1901]investigations of some problems related to the bovine theileriasis and its vector have been undertaken in korea. owing to the nation-wide investment of dairy farming, hundreds of milk cattle were imported from foreign countries during the last l0 years. this caused some problems for the imported dairy cattle in terms of cattle piroplasmosis, from which native korean cattle are immune. the bovine theileriasis has been studied from the beginning of the 20th centry in korea, and the carriers and in ...197412913481
the transmission of babesia bovis using frozen infective material obtained from boophilus microplus larvae. 19744449642
boophilus microplus: digestion of hemoglobins by the engorged female tick. 19744815010
babesia argentina: the infection of splenectomized calves with extracts of larval ticks (boophilus microplus). 19744819982
acaricide ac 84,633: first trials for control of boophilus microplus. 19744839224
toxicity of piperonyl butoxide to boophilus microplus. 19744858271
characterization of the organophosphorus-resistant mt alford, gracemere and silkwood strains of the cattle tick, boophilus microplus. 19744139946
feeding of boophilus microplus larvae on a partially defined medium through thin slices of cattle skin.larvae of the cattle tick boophilus microplus will attach to thin (0-3--0-5 mm) slices of cattle skin and engorge on a partially defined medium at 35 degrees c. forty-seven to 83 per cent of the larvae had engorged by 8 days, and 51--71 per cent of these moulted to nymphs. tissue culture medium alone allowed little growth unless supplemented with dialysed, freeze dried bovine serum (7 per cent, w/v). this medium could be further difined by substituting purified bovine serum albumin (cohn frac ...19751128926
the effect of imidocarb treatment on babesia in the bovine and the tick (boophilus microplus).treatment of calves with 5 mg/kg imidocarb (3,3-1-bis-(2 - imidazolin - 2 - yl)carbanilide dipropionate) given intramuscularly 14 days before and 14 days after exposure to babesia infected boophilus microplus larvae rendered the next generation of larvae incapable of transmitting babesia infection. when administered to calves 14 or 28 days before tick exposure, the drug prevented the development of clinical babesiosis; the larval progeny of ticks reared on the calf which was treated 28 days bef ...19751129539
chlorodimeform and its effect on monoamine oxidase activity in the cattle tick, boophilus microplus.the action of the acaricide, chlorodimeform and its metabolite. n-desmethylchlorodimeform, on the activity monoamine oxidase (mao) from the cattle tick, boophilus microplus, were studied. both compounds were found to be potent in vitro and in vivo inhibitors of the enzyme. however the inhibition of mao does not seem to be related to the toxic action of the acaricide.19751175733
transstadial transmission of theileria annulata through common ixodid ticks infesting indian cattle.transstadial transmission of theileria annulata with hyalomma anatolicum anatolicum, h. dromedarii and h. marginatum isaaci, and haemaphysalis bispinosa, rhipicephalus haemaphysaloides haemaphysaloides and boophilus microplus was determined. it was found that the infection was successfully transmitted by h. a. anatolicum from larva to nymph and nymph to adult in all attempts. when larvae were fed on an infected calf the succeeding adults transmitted the infection when the intervening nymphs fed ...19751178216
boophilus microplus (canestrini) (acaridae: ixodidae) on the bovine host. i. mortality during the developmental cycle. 19751179958
boophilus microplus (canestrini) (acarida: ixodidae) on the bovine host. ii. distribution of stages during development. 19751189876
formamidine acaricides: toxicological studies with the cattle tick. 1975773643
oviposition of boophilus microplus (canestrini) (acarida: ixodidae). iii. oviposition pattern of acaracide resistant strain. 19751179949
resistance in boophilus microplus to cholinesterase inhibition and alterations in the site of action. 19751063661
[the ixodicidal activity of clenpyrin, chlordimeform and chlormethiuron against op-resistant boophilus microplus strains]. 19761266446
chemistry, biological activity, and uses of formamidine pesticides.the formamidines, a relatively new group of acaricide-insecticides, are novel both in their range of biological activities and in their mode of action, which is presently unknown. this paper is a review of the historical development, properties, structures, uses, and chemistry of this group of pesticides, with particular emphasis on chlordimeform (galecron or fundal), n'-4-chloro-o-tolyl-n,n-dimethylformamidine, and amitraz, 1,3=di-(2,4-dimethylphenylimino)-2-methyl-2-azapropane. their biologica ...1976789070
resistance to boophilus microplus (canestrini) in genetically different types of calves in early life.tick resistance and blood composition were studied in british (1/2 shorthorn x 1/2 hereford) and zebu (1/2 brahman x 1/2 british) calves from birth to 33 days of age in a tropical grazing area in which b. microplus is endemic. calves of the 2 breeds were either naturally infested or were, in addition, artificially infested with 5,000 larvae at 2 and 9 days of age. total numbers of mature female ticks carried from either type of infestation were significantly lower (p less than 0.01) on zebu than ...19761263044
immunologic relations between cattle and ticks, specifically between cattle and boophilus microplus.in the present investigation, it has been demonstrated that cattle become resistant to ticks after several heavy infestations, particularly with b. microplus. during development of the infestations, antibodies against salivary glands of b. microplus were detected using 2 techniques: indirect immunofluorescence and immunoelectrophoresis. there is a positive causal relationship between antibody titer and resistance development. two precipitating systems against b. microplus in infested cattle and ...197613630
boophilus microplus: passive transfer of resistance in cattle.plasma from cattle highly resistant to the tick boophilus microplus conferred some resistance to unexposed calves. in contrast plasma from hosts of low resistance had no significant effect compared with plasma from unexposed donors.1976932924
the fine structure of merozoites of babesia bovis in the gut epithelium of boophilus microplus.electron microscopic studies on merozoites of babesia bovis in epithelial cells of the gut of boophilus microplus revealed that the pellicle apparently consists of 3 membranes, and an osmiophilic layer intimately associated with microtubules. micropores in the pellicle were often associated with micronemes. an unidentified tubular structure extended from the anterior polar ring to the nuclear region where it appeared to be associated with the nuclear envelope. a golgi complex, typical protozoan ...1976940662
a comparison of the effect of two regimens of infestation on the development of resistance by cattle to the cattle tick, boophilus microplus (can.).the development of resistance to boophilus microplus by cattle was studied using sets of cattle twins, in stalls. one twin from each set received 3 infestations of 40,000 larvae and the other a continuous infestation of 1,000 larvae a day over the same period. sets of twins were then challenged with 1,000 larvae a day for 40 days and 2 field infestations of 20,000 larvae. correlations of ranking for resistance made at 40-day periods during daily infestations of 1,000 larval ticks or for correspo ...1976944256
african cattle tick infesting a canadian. 1976953925
isolation and partial characterization of an antigen from the cattle tick, boophilus microplus. 1976955670
aniline metabolism in two species of arachnida: water-soluble metabolites.1. the metabolism of [14c]aniline in the cattle tick, boophilus microplus (canestrini) at 40 and 300 mug per animal) and in the spider, nephila plumipes (at 40 mug per 100 mg) were studied. 2. in both species hydroxylation occurred yielding both free and conjugated o-and p-aminophenols. 3. the water-soluble metabolites affording aniline on acid hydrolysis were examined, and gamma-glutamylanilide (23% of dose) was identified as a tick metabolite (40 mug dose). this metabolite was not found in ext ...1976983127
linkage and dominance characteristics of genes for resistance to organophosphorus acaricides and allelic inheritance of decreased brain cholinesterase activity in three strains of the cattle tick, boophilus microplus.resistance to the organophosphorus acaricides diazinon, dimethoate and formothion in the biarra (b), mackay (m) and ridgelands (r) strains respectively of the cattle tick b. microplus has been shown previously to be controlled in each strain by a single incompletely dominant autosomal genetic factor. a very similar mode of inheritance of fenthion resistance in strain b has now been demonstrated with no departure in degree of dominance of resistance from the mean value of +0-57 common to these st ...1976985225
biochemical genetics of resistance to organophosphorus acaricides in three strains of the cattle tick, boophilus microplus.three aspects of the biochemical genetics of resistance to organophosphorus compounds in the biarra (b), mackay (m) and ridgelands (r) strains of the cattle tick b. microplus were studied. these were: decreased acetylcholinesterase (ache) activity in adult brains of strains b and m; decreased ache sensitivity to inhibitors in adult brains and in larvae of strains b, m and r; and increased detoxication in larvae and adult females of strain m. comparisons were made with a susceptible reference str ...1976985226
factors affecting the detection of infestations of boophilus microplus in tick control programs.factors affecting the probability of detecting infestations of boophilus microplus when herds of cattle are examined were studied. the probability of detecting a tick depends on the number of infested cattle in the herd, the probability of ticks being present on the areas of the beast examined, the efficiency of the examination and the proportion of the herd examined. a mathematical expression relating these factors was derived, and a range of values calculated to demonstrate the relative import ...1976985247
boophilus microplus: the effect of host resistance on larval attachments and growth.growth and behaviour of boophilus microplus larvae on british breed cattle, with different resistance levels to the tick, were studied to elucidate the nature of resistance. on highly resistant animals, larval growth rate was slower for the first 3 days, but by day 4 they had attained the normal weight and the majority were subsequently able to moult. using phosphorus-32 labelled larvae, it was found that attachment times were shorter and more time was spent wandering on highly resistant animals ...1976987568
light and electron microscopic observations on the development of small merozoites of babesia bovis in boophilus microplus larvae.the development of small pyriform merozoites of b. bovis in the granule-secreting cells of the salivary glands of b. microplus larvae, studied with a light microscope, showed a close resemblance to that of b. argentina described by riek (1966) in the same tick vector. dvelopment took place through a process of schizogony and resulted in the formation of many merozoites. a study of the ultrastructure of developing merozoites in the schizont revealed the following: a poorly defined outer membrane; ...19761012651
infection rates and outbreaks of disease due to babesia argentina in unvaccinated cattle on 5 beef properties in south-eastern queensland.serums from unvaccinated groups in 5 herds of beef-cattle in south-east queensland were tested for antibodies to babesia argentina at intervals while the cattle were increasing in age from about 6 months. an indirect fluorescent antibody test was used. infection rates, indicating the proportions of the groups that had been exposed to tick-transmitted infection were 49.2, 56.9 and 69.1% for cattle aged approximately 6, 12 and 18 months, respectively. the degree to which cattle were infested with ...19761016134
stimulation of the development of infective babesia bovis (= b. argentina) in unfed boophilus microplus larvae. 19761016162
prostaglandin in the saliva of the cattle tick boophilus microplus.previous studies of saliva from engorged female cattle ticks revealed a component which induced contration of some isolated smooth muscles. fractionation and further characterisation have shown that this substance is of the "slow-reacting" type, but that it is neither a bradykinin nor slow-reacting substance of anaphylaxis. the substance is deactivated by incubation with 15-hydroxprostaglandin dehydrogenase and its pharmacological properties also support its classification as a prostaglandin. a ...19761021092
boophilus microplus: characterization of enzymes introduced into the host.a number of enzymes, presumably secreted by larvae of b. microplus under natural feeding conditions, have been investigated in the skin of previously unexposed calves 4 h after infestation at the attachment site. carboxylic ester hydrolase activity was demonstrated in the dermis, immediately adjacent to the mouthparts, or in the attachment cone, depending on substrate and reaction ph. the carboxylic ester hydrolase acting on naphthol as-d acetate (2-acetoxy-3-naphthoic-o-toluidide) at ph 7-1 was ...19761023862
boophilus microplus: cellular responses to larval attachment and their relationship to host resistance.the histology of early feeding lesions of the cattle tick b. microplus has been studied using 32p labelled larvae to standardize the duration of attachment. critical studies were made on 3-h lesions in six separate experiments on different groups of british breed animals. each group consisted of three animals--one previously unexposed to ticks, one of high resistance and one of low resistance. the degree of mast cell disruption, eosinophil concentration and degranulation, and the extent of epide ...19761023863
a comparative toxicological and biochemical study of the effects of coumaphos on larvae of haemaphysalis longicornis and boophilus microplus. 19761052884
effects of 60co irradiation on unfed adults and engorged females of the tick hyalomma anatolicum.unfed and engorged adults of the cattle tick hyalomma anatolicum, known to be biological vector of theileria anmulata in india, were exposed to various levels of gamma-radiation from 0-60 000 r, and the effect on engorgement and redproduction was observed. the radiation tolerance limit for unfed adults is 1000 r for engorgement and reproduction. the sterilizing dose for most of the males is 2000 r but the females can tolerate a slightly higher dose. engorged females have a tolerance limit of 10 ...19761083846
allergenic activity of an esterase from boophilus microplus. 197616386055
the nonpolar egg wax lipids of the cattle tick, boophilus microplus (canestrini).about 40% of the lipids of the egg wax of boophilus microplus are nonpolar and comprise hydrocarbons (10%) and wax esters (90%). the hydrocarbon fraction is 87% unbranched alkanes, the major components being n-nonadecane (10.8%), n-eicosane (12.1%), and n-heneicosane (9.8%). this fraction also contains 2,4,6-cholestatriene (4.6%). the majority of the acids are branched (77%) the major components being 12-methyl-tetradecanoic (16.3%) and branched hexadecanoic acids (28%). the major alcohols are n ...1977557717
antigonadotropic action of insect hormone analogues on the cattle tick boophilus microplus. 1977576494
failure of vaccine strains of babesia bovis to regain infectivity for ticks during long-standing infections in cattle.two strains of babesia bovis that were known to have lost infectivity for the normal tick vector, boophilus microplus, due to repeated blood passaging in cattle, were studied to determine whether the strains would regain infectivity for ticks during longstanding infections. parasitaemias were monitored in 4 chronically infected calves that were regularly infested with ticks. two strains of ticks known to be susceptible to infection with unmodified strains of b. bovis were used. adult female tick ...1977588177
relative susceptibility of jamaican strains of boophilus microplus, amblyomma cajennense, and anocentor nitens to various acaricides. 1977604370
distribution of catecholamines in the cattle tick boophilus microplus. 197723237
rusa deer (cervus timorensis) as a host for the cattle tick (boophilus microplus) in papua new guinea.the rusa deer (cervus timorensis) is more resistant to the cattle tick (boophlilus microplus) than are britsh breed cattle in papua new guinea. the average yield of replete female ticks from deer was 1.6% (0.3-3.2%) as compared to 11.2% (3.4-23.1%) from calves. ticks from deer were more slender, lighter in weight and produced fewer eggs (mean 1,800) than did ticks from calves (mean 2,200) but the deer was shown to be an effective host. a cervid population can maintain a tick population in the ab ...1977864854
the selection of larvae of boophilus microplus infected with babesia bovis (syn b argentina).observations on the dynamics of the transovarial transmission of babesia bovis by boophilus microplus showed that, at 28 degrees c and 90--95 per cent relative humidity, a low proportion of the eggs laid during the first five days' incubation of the engorged female ticks were infected with the babesia. however, the eggs laid on the sixth and seventh days of incubation were heavily infected. this was the basis of a method for selecting larval cultures of b microplus which contained up to five tim ...1977905646
use of high-performance liquid chromatography to separate very small quantities of radio-labelled metabolites from biological tissue.in order to study the absorption, metabolism and tissue distribution of chemicals in cattle ticks amblyomma variegatum, a method of separating and recovering metabolites in picogram quantities was required. a high-performance liquid chromatographic system has been investigated for this purpose, using tritium-labelled amitraz and some potential metabolites. separation was carried out on nucleosil 5 mum no2 bonded phase. interchangeable pre-columns were used to extend the range of compounds which ...1977914943
the innervation of the salivary gland of the tick, boophilus microplus.salivary of the ixodid tick boophilus microplus canestrini are at least partially innervated by a branch of the pedipalpal nerve. axons containing both large granular and smaller agranular vesicles were observed within the acini associated with all types of secretory cells. a modification of the falk-hillarp histochemical technique was used to demonstrate discrete areas of fluorescence within the salivary acini. it is suggested that the transmitter involved with the control of salivary activitie ...197722402
boophilus microplus: characterization of larval phosphomonoesterases and isolation of subcellular fractions with high phosphatase activity. 197878858
metabolism of [14c] amitraz in larvae of boophilus microplus.amitraz, 1, 5-di(2, 4-dimethylphenyl)-3-methyl-1, 3, 5-triazapenta-1, 4-diene, labelled with 14c in the 2-methyl groups was applied to b. microplus larvae by an immersion technique. the chemical penetrated readily but never appeared in large amounts internally due to rapid cleavage to n-2, 4-dimethylphenyl-n'-methylformamidine. the expected complementary cleavage product 2, 4-dimethylformanilide was not produced in equivalent quantity. however, large amounts of polar metabolite(s) were produced. ...1978678221
virus-like particles pathogenic to salivary glands of the tick boophilus microplus. 1978628429
boophilus microplus: strain differences of the cholinesterase system. 197823955
boophilus microplus: characterization of larval proteases. 197823954
genetic incompatibility between boophilus decoloratus (koch, 1844) and boophilus microplus (canestrini, 1888) and hybrid sterility of australian and south african boophilus microplus (acarina: ixodidae).virgin females of both boophilus decoloratus and boophilus microplus, when mated with males of the other species, subsequently produced sterile eggs. counts of spermiophore capsules in female seminal receptacles showed that the males of both species will mate with the females of both species and that b. microplus males show a slightly greater, but statistically insignificant, mating capacity than b. decoloratus males. south african b. microplus females, when mated with an australian strain of b. ...1978571591
acaricidal susceptibility of five strains of boophilus microplus from four caribbean countries. 1978627670
immunosuppression by babesia bovis against its tick vector, boophilus microplus. 1978643072
the duration of latent infection and functional immunity in droughtmaster and hereford cattle following natural infection with babesia argentina and babesia bigemina.tne droughtmaster and 9 hereford cattle were born in an enzootic babesiasis area and became naturally infected with babesia argentina and b.bigemina during a 3 year period. they were then kept free of cattle ticks (boophilus microplus) for the remainder of the experiment. annually for the next 3 years their individual infection status with babesia was determined by sub-inoculation of blood into splenectomised calves. at the end of this period the functional immunity of all cattle was challenged ...1978655965
boophilus microplus: rejection of larvae from british breed cattle.larvae of boophilus microplus were labelled with [32p] and used to study the rejection of larvae from british breed cattle with different levels of resistance. on animals of high resistance the loss of larvae due to grooming ranged from 9-54% during the first 24 h of infestation, and more time was spent grooming by these animals. most of the grooming activity could be attributed to the presence of tick larvae and the presence of older tick stages did not increase the percentage of larvae lost. g ...1978662415
bovine babesiosis: severity and reproducibility of babesia bovis infections induced by boophilus microplus under laboratory conditions.a total of 61 intact holstein-friesian calves were exposed to babesia bovis (= b argentina) by the injection of infected blood or the application of infected boophilus microplus larvae. tick-induced infections were uniformly severe, even when induced by relatively small numbers of infected ticks. in contrast, calves infected with carrier blood experienced mild, subclinical reactions despite detectable parasitaemia. the greater severity of tick-induced reactions appeared to be due to the large nu ...1978674841
responses of cattle to allergens from boophilus microplus. 1978681073
sequential changes in salivary gland structure during attachment and feeding of the cattle tick, boophilus microplus. 1978681074
transmission of babesia bigemina by transfer of adult male boophilus microplus. 1978687283
methods to improve the health of cattle in the tropics: conclusions and economic appraisal.the results of the immune responses of immunised and chemoprophylactically treated calves to tick-borne (boophilus microplus) challenge indicate that the system of immunisation was effective in protecting cattle against anaplasma marginale, babesia argentina (bovis), and b. bigemina. however, chemoprophylaxis was effective only against babesia spp. but not against a. marginale. both methods showed a substantial advantage over no control system when using native cattle breeds in a zone endemic fo ...1978705891
norepinephrine as principal catecholamine in a specific neurone of an invertebrate (boophilus microplus: acarina).norepinephrine has been identified as the principal catecholamine in individual neurons of the synganglion of an arthropod, the cattle tick boophilus microplus. this suggests that norepinephrine may have a hitherto unsuspected major physiological role in at least one group of invertebrates.1978720511
the effect of density on the survival of boophilus microplus on previously unexposed cattle. 1978730467
pathobiology of borrelia theileri in the tropical cattle tick, boophilus microplus. 1978731072
differences in the life cycles between a vaccine strain and an unmodified strain of babesia bovis (babes, 1889) in the tick boophilus microplus (canestrini).developmental forms of 2 strains of babesia bovis (babes) were studied in the tick vector boophilus microplus (canestrini). one strain (designated t) was shown to be infective for the tick, and the other (nt) to have lost infectivity for the tick, because of repeated blood passaging in cattle. parasites of the 2 strains in gut contents of adult female ticks were similar during the first 16 h post-repletion (pr), but thereafter their structure differed. from 16-64 h pr, the majority of t strain p ...1978739414
a note on the transmission of babesia bovis (syn b argentina) by the one-host tick, boophilus microplus.boophilus microplus infected with babesia bovis were transferred artificially from one splenectomised calf to another during each moult in the parasitic life cycle of the tick. eggs from the engorged female ticks recovered at the end of the cycle were incubated and the resulting larvae used to infest more splenectomised calves. babesia bovis was transmitted only by the original larvae used at the commencement of the experiment and it was concluded that the protozoan parasite did not persist in a ...1979262611
some aspects of the epidemiology and control of bovine babesiosis in australia.a short account of the epidemiology and control of babesiosis in australia is presented. epidemiological topics discussed include differences in the transmission of babesia bovis and b. bigemina by the cattle tick, boophilus microplus and the relative prevalence, disease incidence and pathogenicity of b. bovis and b. bigemina. circumstances under which babesiosis occurs in australia are described. in the section on control, only vaccination is discussed. changes in the preparation of babesial va ...1979399977
characterization of a proteolytic-enzyme inhibitor with allergenic activity. multiple functions of a parasite-derived protein.1. a trypsin inhibitor from the tick boophilus microplus was purified by ion-exchange chromatography and gel filtration. 2. it is pure by the criteria of constant specific activity on gel filtration and by electrophoresis on polyacrylamide gels containing sodium dodecyl sulphate. 3. the protein undergoes reversible polymerization, dissociating at low ph. 4. the apparent molecular weight measured by electrophoresis on polyacrylamide gels containing sodium dodecyl sulphate is 18,500. 5. inhibition ...1979426780
the invasion and growth of babesia bovis in tick tissue culture.erythrocytic forms of babesia bovis inoculated into cell cultures of the tick boophilus microplus invaded the tick cells and showed multiplication for up to 48 h after inoculation.1979467577
the relation between skin histamine concentration, histamine sensitivity, and the resistance of cattle to the tick, boophilus microplus.cattle with different degrees of resistance to boophilus microplus have responses to tick allergen which correlate with their resistance level. the total amount of histamine in the skin also correlates with both resistance and the immediate hypersensitivity reactions, but the sensitivity to injected histamine does not. treatment with the antihistamine drug mepyramine maleate suppresses the cutaneous hypersensitivity reactions. the results suggest that the main pharmacologically active agent in t ...1979483974
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