| sulphur and the cattle tick boophilus microplus. | | 1972 | 5013812 |
| electrical studies on the feeding of the cattle-tick, boophilus microplus. | | 1972 | 5015014 |
| the inheritance of resistance by cattle to cattle tick. | | 1972 | 5068812 |
| behavior of larvae of the cattle tick, boophilus microplus (canestrini), on cattle of differing degrees of resistance. | | 1971 | 5090974 |
| a modification of pasture spelling to reduce acaricide treatments for cattle tick control. | | 1971 | 5103591 |
| factors affecting the distribution and abundance of the cattle tick in australia: observations and hypotheses. | | 1971 | 5105775 |
| the effect of cattle tick (boophilus microplus) on pregnant and lactating brahman-cross and british-breed cows in northern australia. | | 1971 | 5106528 |
| the acquired resistance to babesia argentina of cattle exposed to light infestation with cattle tick (boophilus microplus). | | 1971 | 5106905 |
| the effect of cattle tick (boophilus microplus) on beef production in the northern territory. | | 1971 | 5106909 |
| mixtures of chlorphenamidine with other acaricides for the control of organ ophosphorus-resistant strains of cattle tick boophilus microplus. | | 1971 | 5120208 |
| labelling larvae of the cattle-tick boophilus microplus, with 32 p to follow their movements on the host. | | 1971 | 5129806 |
| 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. | | 1971 | 5159198 |
| metabolism of chlorphenamidine in larvae of the cattle tick boophilus microplus. | | 1971 | 5163487 |
| alterations in host metabolism by the specific and anorectic effects of the cattle tick (boophilus microplus). i. food intake and body weight growth. | | 1971 | 5280977 |
| alterations in host metabolism by the specific and anorectic effects of the cattle-tick (boophilus microplus). ii. changes in blood composition. | | 1971 | 5280978 |
| boophilus microplus (acarina: ixodidae): experimental infestations on cattle restrained from grooming. | | 1969 | 5401459 |
| observations on the dispersal of larvae of the cattle tick boophilus microplus (can.). | | 1970 | 5450439 |
| the absorption and metabolism of (14c)ddt in ddt-resistant and susceptible strains of the cattle tick boophilus microplus. | | 1970 | 5475727 |
| the efficacy of supona (chlorfenvinphos) against cattle ticks in nigeria under field conditions. | | 1970 | 5535686 |
| a modification to the collection of saliva from boophilus microplus. | | 1971 | 5552701 |
| esterases and a carbohydrate-splitting enzyme in the saliva of the cattle tick, boophilus microplus. | | 1971 | 5553457 |
| [a study of the cattle ticks in guadelope and martinique. ii. pathogenic agents transmitted by ticks]. | | 1967 | 5628907 |
| insecticides for control of the cattle tick and the southern cattle tick on cattle. | | 1968 | 5642113 |
| mechanism of resistance to organophosphorus acaricides in a strain of the cattle tick boophilus microplus. | | 1968 | 5643270 |
| inheritance of resistance to organophosphorus acaricides in the cattle tick, boophilus microplus. | | 1968 | 5666452 |
| brain cholinesterase activity and its inheritance in cattle tick (boophilus microplus) strains resistant and susceptible to organophosphorus acaricides. | | 1968 | 5666453 |
| the efficacy and stability of dursban insecticide in dipping vat for control of the southern cattle tick. | | 1968 | 5666957 |
| acetylcholinesterase insensitivity in the biarra strain of the cattle tick boophilus microplus, as a cause of resistance to organophosphorus and carbamate acaricides. | | 1968 | 5680996 |
| loss of toxicity to cattle ticks of a wettable powder formulation of coumaphos. | | 1968 | 5689244 |
| eradication of cattle tick (boophilus microplus) from magnetic island, queensland, in the presence of native fauna. | | 1968 | 5693053 |
| developments in the resistance status of the southern cattle tick to organophosphorus and carbamate insecticides. | | 1968 | 5723760 |
| the feeding processes of the cattle tick boophilus microplus (canestrini). ii. the sequence of host-tissue changes. | | 1968 | 5740485 |
| resistance of cattle to the tick boophilus microplus (canestrini). i. development of ticks on bos taurus. | | 1968 | 5761112 |
| resistance of cattle to the tick boophilus microplus (canestrini). ii. stages of the life cycle of the parasite against which resistance is manifest. | | 1968 | 5761113 |
| metabolism of aniline in the cattle tick boophilus microplus canestrini. | | 1969 | 5781640 |
| the ecology of cattle ticks in bugisu, uganda. | | 1969 | 5789101 |
| the production of cuticle wax by engorged females of the cattle tick, boophilus microplus (canestrini). | | 1969 | 5793885 |
| the effect of cattle tick (boophilus microplus)on production of brahman-cross and british-breed cattle in northern australia. | | 1969 | 5814104 |
| effect of fungal extracts on the cattle tick, boophilus microplus. | | 1969 | 5814109 |
| [study on cattle ticks in guadelupe and martinique. i. ticks and their distribution (acarina, ixodoidea)]. | | 1966 | 5951733 |
| metabolism of coumaphos in larvae of the cattle tick boophilus microplus. | | 1966 | 5970060 |
| the feeding processes of the cattle-tick boophilus microplus (canestrini): a study in host-parasite relations. i. attachment to the host. | | 1966 | 5971582 |
| acaricide tests on the biarra strain of organophosphorus resistant cattle tick boophilus microplus from southern queensland. | | 1967 | 6067998 |
| investigations into the cold resistance of the eggs and larvae of boophilus decoloratus (koch, 1844), boophilus microplus (canestrini, 1888) and margaropus winthemi karsch, 1879. | | 1967 | 6069321 |
| acaricide resistance and cattle tick control. | | 1967 | 6069461 |
| acaricide resistance and cattle tick control. | | 1967 | 6069462 |
| ixodes nipponensis n. sp. (ixodoidea, ixodidae), a common cattle tick in japan. | | 1967 | 6078267 |
| bovine leukosis virus infectivity in boophilus microplus ticks. | | 1984 | 6095512 |
| inheritance of resistance to chlorpyrifos in the mt alford strain and to diazinon in the gracemere strain of the cattle tick (boophilus microplus). | reciprocal crossing of the mt alford (a) strain of the cattle tick b. microplus with a susceptible (s) strain and phenotype analysis of f1, testcross and f2 progeny showed that high chlorpyrifos resistance in strain a was due to two genes that were complementary and jointly exhibited incomplete dominance. diazinon resistance in the gracemere (g) strain appeared to be similarly inherited. the 'average' degree of dominance ('average dominance', dav) of high chlorpyrifos resistance over susceptibil ... | 1982 | 6186234 |
| dna polymorphisms and subpopulations in babesia bovis. | independent isolates of babesia bovis differ by only a limited number of polypeptides, some of which may be important as host protective antigens. avirulent derivatives of these parasites also differ from their virulent counterparts in only a few polypeptides. to identify genes encoding such polypeptides we have isolated cdna clones corresponding to poly(a)+ rnas that are expressed only in certain isolates. for this purpose a cdna clone library was constructed from poly(a)+ rna of the k-avirulen ... | 1984 | 6205269 |
| boophilus microplus: cattle antienzymes to larval phosphomonoesterases. | | 1980 | 6250874 |
| action of formamidine pesticides on octopamine receptors. | the formamidines are a structurally novel group of pesticides of growing importance in the control of mites, cattle ticks and certain orders of insects which have become resistant to conventional acaricides and insecticides. their mode of action is complex with dose-dependent lethal and subletahal effects. at sublethal levels they cause behavioural changes in the target pest species (for example in feeding and in mating behaviours), changes which are responsible for the protective effects on cro ... | 1980 | 6251379 |
| the role of specific immunoglobulins in antibody-dependent cell-mediated cytotoxicity assays during babesia bovis infection. | a stabilate prepared from babesia bovis-infected boophilus microplus ticks was used to infect intact adult cattle. whole sera and immunoglobulin fractions from representative sera were tested by complement fixation (cf), indirect fluorescent antibody (ifa), and antibody-dependent cell-mediated cytotoxicity (adcc) assays. the last test utilized 51cr-labeled chicken erythrocytes coated with babesia bovis antigen as targets. mononuclear cell preparations, obtained from peripheral blood of normal do ... | 1984 | 6369760 |
| the effect of chemotherapy on babesia bigemina in the tick vector boophilus microplus. | | 1984 | 6469445 |
| ultrastructure of the accessory glands of gene's organ in the cattle tick, boophilus. | the organization and ultrastructure of the accessory glands of the cattle tick, boophilus microplus, are described. the glands consist of two groups of acinar cells situated on either side of gene's organ. a single acinus consists of from eight to 12 cells and each cell is connected via an individual duct to pores on the dorsal surface of the mouthparts. the position of these pores is such that the secretion of the accessory glands is incorporated into the egg wax during oviposition. each gland ... | 1984 | 6484940 |
| boophilus microplus tick burdens on grazing cattle in colombia. | this study was conducted at carimagua research centre in a well-drained savanna area in the eastern plains of colombia. the objectives were to note the effect of ecological factors on tick burdens, principally the effect of the environment given by four grasses on the seasonal variations of tick populations. adult female tick counts were carried out on heifers grazing four pastures and tick larvae on the grass detected by cloth dragging. tick counts were significantly higher on animals grazing b ... | 1984 | 6485100 |
| tick-borne rickettsioses in pune district, maharashtra, india. | an extensive study on tick-borne rickettsioses in the pune district of maharashtra revealed that indian tick typhus exists as a zoonosis, which only occasionally causes disease in man. by sero-conversion in guinea pigs, presumptive isolates of rickettsia conori and coxiella burnetii were recovered from 4 of the 11 species of ticks examined. boophilus microplus and rhipicephalus haemaphysalis were found to be harbouring r. conori whereas c. burnetii was isolated from haemaphysalis intermedia and ... | 1984 | 6500861 |
| studies on ticks of veterinary importance in nigeria. xi. observations on the biology of ticks detached from the red-flanked duiker (cephamophys rufulatus) and parasites encountered in their blood. | some aspects of the biology of amblyomma variegatum and boophilus decorolatus detached from red-flanked duikers were studied. smears were also made from the blood of the duikers and examined for the presence of parasites. anaplasma marginale was the only blood parasite found in the blood smears. compared with ticks detached from cattle, duiker ticks produced a greater number of eggs. the lengths and breadths of eggs produced by duiker ticks were greater than those of cattle ticks and unlike a. v ... | 1984 | 6538723 |
| decreased resistance of bos taurus cattle on a diet supplemented with whole cotton seed to the tick boophilus microplus (canestrini). | resistance to the tick b. microplus was compared in bos taurus steers fed hay (low fat (lf) diet) with those fed hay supplemented with whole cotton seeds (high fat (cs) diet) which made them hyperlipidaemic. the mean number of adult female ticks maturing from the same artificial doses of larvae was about 2.7 times higher on animals fed the cs diet than on animals fed the lf diet. in both dietary groups the effect of ticks: depressed packed-cell volume, plasma cholesterol and phospholipid levels, ... | 1984 | 6548592 |
| babesia bovis: proteins of virulent and avirulent parasites passaged through ticks and splenectomized or intact calves. | passage of the avirulent vaccine (k) strain of babesia bovis (ka) through either boophilus microplus ticks, intact calves, or intact calves and then ticks, resulted in two distinct protein and protein antigen profiles as analyzed by two-dimensional gel electrophoresis of biosynthetically labeled proteins and immunoprecipitates. different degrees of expression of two major acidic antigens of ka designated ka1 (mr 47,500) and ka2 (mr 43,000) were observed. ka1 was apparently lost following passage ... | 1983 | 6617805 |
| application of trans and cis isomers of p-nitrophenyl-(1r, s)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate to the assay of pyrethroid-hydrolyzing esterases. | a continuous-rate assay for the detection of esterases which hydrolyze synthetic pyrethroids is described. the assay is based on the release of p-nitrophenolate ion upon hydrolysis of the pyrethroid-like compound, trans- or cis-p-nitrophenyl-(1r,s)-3-(2,2-dichlorovinyl)-2, 2-dimethylcyclopropanecarboxylate, at ph 7.4 where spontaneous hydrolysis is not detected. the reagent is solubilized by 0.02% triton x-100 in the presence of 1.0% ethanol. a simple procedure for the synthesis and separation o ... | 1983 | 6625152 |
| observations on body temperature of the host and resistance to the tick boophilus microplus (acari: ixodidae). | | 1983 | 6644752 |
| binding of antigens to tissues: the example of boophilus microplus and bovine skin. | | 1983 | 6654584 |
| some helminth and arthropod parasites of the grey duiker, sylvicapra grimmia. | sixteen grey duikers were culled on the farm riekert 's laager in the central transvaal at irregular intervals from may 1979-march 1981. one trematode species, 3 cestode species and 16 nematode species were recovered from these animals. of these the following are new helminth records for this antelope: cooperia hungi , cooperia neitzi , cooperia pectinata , trichostrongylus axei, trichostrongylus colubriformis, trichostrongylus falculatus , trichostrongylus instabilis , impalaia tuberculata , ne ... | 1983 | 6676685 |
| trypsin-chymotrypsin inhibitors from the tick, boophilus microplus. | the eggs of the cattle tick, boophilus microplus, contain at least two proteolytic enzyme inhibitors which have been purified and partially characterized. one of these is closely related to an inhibitor from larval ticks previously purified. it is similar in general properties, in amino acid composition and it cross-reacts immunologically with the larval protein. the egg and larval proteins are, however, largely or completely stage-specific. the significance of this to the study of the host-para ... | 1983 | 6683962 |
| observations on anaplasmosis following field exposure to heavy and light infestations with boophilus microplus. | two groups of normandy calves were exposed to heavy (mean half body count = greater than 300) or light (mean half body count = 9) natural infestations with boophilus microplus. all of the calves became infected with anaplasma marginale. despite the difference in tick challenge level, there was no significant difference in the incubation period, increase in body temperature, level or duration of anaplasma parasitemia, decrease in packed cell volume, or complement-fixing antibody response, between ... | 1983 | 6685402 |
| the use of tick transmission by boophilus microplus to isolate pure strains of babesia bovis, babesia bigemina and anaplasma marginale from cattle with mixed infections. | pure strains of babesia bovis, babesia bigemina and anaplasma marginale were isolated from cattle infected with all 3 species as well as theileria sp. and eperythrozoon teganodes, using only transmission by the tick, boophilus microplus. unengorged adult ticks transferred to susceptible cattle transmitted a. marginale, but not babesia. engorged adults gave rise to progeny that transmitted babesia, b. bovis by larvae and b. bigemina by male ticks. the theileria and e. teganodes were not transmitt ... | 1983 | 6686384 |
| immune responses of calves antigenically stimulated and challenge exposed with anaplasma marginale during tick infestation or treatment with dexamethasone. | similar anamnestic antibody responses to a 2nd injection of a anaplasma marginale vaccinal antigen were observed in calves infested with the tick dermacentor albipictus and in tick-free calves. when challenge exposure of these calves to virulent a marginale was done, infestation with the tick boophilus microplus increased anemia (p less than 0.01), but did not suppress antibody production to a marginale or increase parasitemia. none of the vaccinated calves, regardless of infestation, experience ... | 1984 | 6711969 |
| control of boophilus ticks on heifers with two pyrethroids applied as sprays. | the pyrethroid permethrin (25% cis to 75% trans) was sprayed on hereford heifers infested with all parasitic stages of boophilus microplus (canestrini) at 0.05% and 0.1% active ingredient. at 0.05%, control was 66.7%; whereas at 0.1%, control was 93.3%. replete females were collected daily for 28 days after treatment at both concentrations, indicating that at least some ticks treated as larvae or nymphs were able to reach repletion. the pyrethroid fenvalerate was sprayed on hereford heifers infe ... | 1984 | 6732004 |
| [seasonal dynamics in the development of boophilus microplus and amblyomma cajennense in camagüey, cuba]. | studies were carried out on the occurrence of the ixodic ticks in farm animals in the province of camagüey, cuba. most spread proved to be the boophilus microplus and amblyomma cajennense species. as many as three waves of parasitic activity were seen with b. microplus: at the end of the winter season, in the months of may and june, and in the autumn (october and november). only one wave was there with the activity of a. cajennense, covering the period of march-september. | 1984 | 6740935 |
| tick resistance and the major histocompatibility system. | 199 3/4 brahman 1/4 shorthorn cattle, whose resistance to the cattle tick boophilus microplus had been determined by clinical trial, were tested for 19 bovine lymphocyte antigens. of eleven antigens detected at a frequency greater than 5%, two were found to be associated with tick resistance and a third was associated with susceptibility to ticks. however, none of these antigens accounts for more than 2.1% of the variance, indicating that these associations are not strong. | 1984 | 6743140 |
| the bovine immune response to tick-derived babesia bovis infection: serological studies of isolated immunoglobulins. | a cryopreserved stabilate was prepared from babesia bovis-infected boophilus microplus ticks. the stabilate was used to infect a group of mature bos taurus-bos indicus cows. the survivors of the initial infection were rechallenged with the homologous stabilate 65 days later. all cows reacted parasitologically after primary challenge, and most responded serologically. with the exception of two cows, those not responding serologically died of acute babesiosis. the two that survived the primary cha ... | 1982 | 6761951 |
| mammalian wildlife diseases as hazards to man and livestock in an area of the llanos orientales of colombia. | development of the llanos orientales of colombia, and access to underdeveloped areas in the llanos, may create disease hazards to man and domestic animals or introduce exotic pathogens, creating reservoirs of infection for domestic animals and acting as limiting factors on the native wild species. a survey of wild animals common to the llanos revealed a number of parasites indigenous to the area. a total total of 59 mammalian species, representing eight orders were examined. haematozoa were repr ... | 1981 | 6788961 |
| causal agents of bovine theileriosis in southern africa. | one pathogenic and 4 mild bovine theileria strains from southern africa, all transmitted by rhipicephalus appendiculatus, were compared amongst themselves as well as to bovine and buffalo strains of the t. parva complex from eastern and southern africa and to bovine strains of t. taurotragi from tanzania considered to be derived from eland antelope. criteria used were parasitological, clinical, serological and cross-immunity characters. the mild strains are similar to bovine t. taurotragi. serol ... | 1982 | 6812250 |
| epidemiology and transmission of theileria sp of cattle in australia. | theileria sp occurs in cattle in australia where boophilus microplus is not present. two species of ixodid ticks namely haemaphysalis longicornis and h. bancrofti have been implicated as natural vectors. experimental transmission was obtained with these two species but attempts to transmit the infection with b. microplus, ixodes holocyclus and amblyomma triguttatum were not successful. although calves born in the enzootic area may become infected before one-month-old most show evidence of infect ... | 1982 | 6818938 |
| failure of boophilus microplus to transmit irradiated babesia bovis. | | 1983 | 6836174 |
| the economics of cattle tick control in dry tropical australia. | the economics of strategic dipping compared to nil treatment of cattle ticks (boophilus microplus) on droughtmaster cattle was assessed using a partial budget analysis. the analysis was based on reported experimental data which showed a bodyweight gain advantage from strategic dipping of 45 kg/head for growing cattle and 35 kg/head for breeding cows. costs of dipping were calculated using 3 acaricide costs, that is 5.9, 20.9 and 62.7 per head and allowances were made for mustering, maintenance o ... | 1983 | 6838436 |
| the efficacy of some acaricides against screw-worm fly larvae. | thirteen acaricides used for control of cattle tick in queensland were evaluated for their potential in the chemical control of the screw-worm fly, chrysomya bezziana. laboratory evaluations and in vivo tests using artificially infested cattle were made in papua new guinea. most of the acaricides caused some mortality of screw-worm larvae in infested cattle and in laboratory tests. acaricides of the organophosphorous, carbamate and organophosphorous/synthetic pyrethroid groups showed reasonable ... | 1983 | 6838439 |
| ultrastructure of babesia bovis sexual stages as observed in boophilus microplus cell cultures. | propagation of babesia bovis in a boophilus microplus cell line resulted in the appearance of the sexual stage of the parasite normally found only within tick intestine. these sexual stages, which possessed spike-like projections containing microtubules, were present in the medium and within cultured cells. other ultrastructural characteristics of this sexual stage are described. | 1983 | 6857000 |
| comparison of cutaneous hyperemia in cattle elicited by larvae of boophilus microplus and by prostaglandins and other mediators. | blood flow has been measured in bovine skin following the injection of tick antigens and a number of pharmacological mediators; including histamine, prostaglandins and slow reacting substance of anaphylaxis. the greatest increase in blood flow (20 times normal) was recorded with tick antigens and with prostaglandin f2. this mediator may therefore influence blood flow during immune reactions to ticks and during the rapid ingestion of blood by the ticks. | 1983 | 6861956 |
| epidemiology of tick-borne diseases of cattle in zimbabwe. i. babesiosis. | a survey on the incidence of antibodies to babesia bigemina and babesia bovis in one to three year old calves at 274 localities in zimbabwe revealed that b. bigemina occurred throughout the country together with its main vector, boophilus decoloratus. the distribution of b. bovis followed closely that of its vector boophilus microplus which is limited to the eastern part of the country. enzootic stability for b. bigemina was recorded in most of the communal tribal areas where regular dipping of ... | 1983 | 6868134 |
| babesia bovis: computer simulation of the relationship between the tick vector, parasite, and bovine host. | components contributing to the survival of babesia bovis in its tick vector (boophilus microplus) and bovine host were identified and their relationship simulated with an interactive basic computer program. estimates for major independent variables (host-finding success, feeding success, filial infection rate, recovery rate) were derived from published laboratory and field data. values for dependent variables (tick burden, inoculation rate, tick and bovine infection rates) were calculated during ... | 1983 | 6873224 |
| cattle tick infestation. | | 1980 | 6931334 |
| evaluation of the potential of systemic slow release chemical treatments for control of the cattle tick (boophilus microplus) using ivermectin. | stall and field trials with cattle infested with various acaricide-resistant strains of cattle tick, have demonstrated the potential of ivermectin as a systemic tickicide. a dosage of 200 micrograms/kg, administered subcutaneously to animals naturally infested in the field, gave satisfactory tick control for 21 days, after an initial lag period of 2 days immediately following treatment, during which significant numbers of ticks survived. daily subcutaneous treatments, administered so as to simul ... | 1981 | 7044363 |
| tropical legumes of the genus stylosanthes immobilize and kill cattle ticks. | | 1982 | 7057894 |
| infectivity for cattle of anaplasma marginale extracted from boophilus microplus ticks exposed to certain temperatures. | | 1982 | 7082225 |
| breeding for resistance to boophilus microplus in australian illawarra shorthorn and brahman x australian illawarra shorthorn cattle. | breeding for resistance to the cattle tick boophilus microplus was undertaken in a herd of australian illawarra shorthorn (ais) cattle from 1961 to 1978 and in a herd of braham x ais cattle from 1970 to 1979. breeder cows and their progeny were assessed for tick resistance during october to january. resistance levels were determined as the average percentage mortality of female ticks from two artificial infestations with cohorts of c 20,000 larvae. resistance increased from 89.2% to 99% in the a ... | 1982 | 7082236 |
| anaplasmosis and babesiosis in el salvador. | a serological survey was carried out in the central american state of el salvador to determine the distribution and prevalence of anaplasma marginale, babesia bigemina and babesia bovis. the results suggest that the parasites are widely distributed throughout the country and prevalence rates of 78.5% for a. marginale, 70.5% for b. bigemina and 73.5% for b. bovis were obtained. tick counts suggest that boophilus microplus is the main blood parasite vector. epidemiological studies showed that init ... | 1982 | 7101466 |
| some effects of time, temperature and feeding on infection rates with babesia bovis and babesia bigemina in boophilus microplus larvae. | | 1982 | 7118375 |
| biological comparisons between a laboratory-maintained and a recently isolated field strain of boophilus microplus. | biological differences between two strains of boophilus microplus were examined. the a-strain of ticks had been maintained at the laboratory for many years and the n-strain was recently isolated, being a composite strain derived from ticks from different sources in the field. in three experiments, up to three times as many n-strain ticks grew to maturity than did a-strain ticks, although a-strain ticks matured earlier. n-strain ticks were 17 to 60% heavier, and laid 50 to 100% more eggs than a-s ... | 1982 | 7119993 |
| 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 |
| cyhalothrin--a novel acaricidal and insecticidal synthetic pyrethroid for the control of the cattle tick (boophilus microplus) and the buffalo fly (haematobia irritans exigua). | cyhalothrin, a novel synthetic pyrethroid, was evaluated for control of the major resistant strains of the cattle tick (boophilus microplus) and for control of the buffalo fly (haematobia irritans exigua) on cattle. in regulated treatment trials with 0.007% cyhalothrin, greater than 99% control of the biarra, mackay, mt alford, ddt resistant and ulam cattle tick strains was obtained. protective-period trials were conducted in which animals which had been sprayed with 0.007% cyhalothrin then rece ... | 1982 | 7165598 |
| transmission of babesia bovis, using undifferentiated embryonic cells from boophilus microplus tick eggs. | | 1981 | 7196719 |
| a putative role for eosinophils in tick rejection. | in the reaction of bos taurus cattle to infestation by the tick boophilus microplus, mast cell histamine is translocated by the eosinophils to the attachment site. the concentration pattern of this cutaneous mediator for pain appears related to the grooming behaviour of the host. | 1981 | 7202667 |
| reduction in pathogenicity of babesia bovis for its tick vector, boophilus microplus, after rapid blood passage in splenectomized calves. | two strains of babesia bovis that had been serially blood passaged in splenectomized calves 27 to 33 times, a procedure known to have reduced their virulence for normal cattle, were shown to have low pathogenicity for replete, female boophilus microplus. in comparison with a strain of b. bovis unmodified by repeated blood passage, the two modified strains infected higher proportions of ticks and produced comparable numbers of morphologically similar parasites in their haemolymph, but killed sign ... | 1981 | 7222925 |
| metabolic changes in cattle due to the specific effect of the tick, boophilus microplus. | 1. an experiment was designed to provide information on the alterations in body metabolism which would account for the loss of body-weight in cattle due to the specific effect (factors other than reduced food intake) of the tick boophilus microplus. 2. two groups of british (shorthorn x hereford) and africander x british calves, each approximately months olds, were used: one group (treated) of each breed was tick-infested and the other (control) was tick-free. within breeds, calves in the contro ... | 1981 | 7236581 |
| a new tick cell line derived from boophilus microplus. | the boophilus microplus ix tick cell line was developed from a primary embryonic cell culture derived from eggs six to nine days old. the cell line has been in culture since march 1979 and is currently maintained at 32 degrees c in medium consisting of equal parts of minimum essential medium an leibovitz 15 medium supplemented with 20 per cent fetal bovine serum, 10 per cent tryptose phosphate broth and 0.1 per cent plasma albumin. a split ratio of 1:2 has been used for all subcultures and the c ... | 1980 | 7255899 |
| arteriovenous anastomoses in the dermal vasculature of the skin of bos taurus cattle, and their relationship with resistance to the tick, boophilus microplus. | bos taurus cattle with high resistance to the tick boophilus microplus, whether free-grazing or in covered pens, had significantly more arteriovenous anastomoses (ava) in their skin than did animals of low resistance. these differences in number of ava associated with resistance level were most marked above the level of the sebaceous gland in the neck region, an area favoured for tick feeding. in this skin layer, the number of ava in low-resistance animals (4.0 plus or minus 0.4 per 2.1 mm) was ... | 1981 | 7259631 |
| cutaneous hyperaemia elicited by larvae of the cattle tick, boophilus microplus. | the responses of skin capillary blood flow (bf) to infestation by larvae of b. microplus have been determined using radioactive microspheres. larvae were placed in gauze-covered rings glued to the closely clipped skin. in pilot experiments on three brahman-cross calves which had prior exposure to ticks, bf measurements at intervals up to 25 h post-infestation revealed a continuing increase. 'high' rates of infestation (5000 larvae per ring) elicited up to an 80-fold increase in bf. in four austr ... | 1981 | 7259632 |
| control of the southern cattle tick with insecticide-impregnated ear tags. | | 1980 | 7264045 |