TitleAbstractYear(sorted ascending)
the distribution of rickettsia in the tissues of insects and the absence of a satisfactory definition of rickettsia the observations herein recorded were arbitrarily limited to bacterium-like organisms which are intracellular and gram-negative. rickettsia of this type were found in the following species: amblyomma americana, amblyomma hebraeum, boophilus decoloratus, atomus sp., casinaria infesta, chrysopa oculata, ctenocephalus canis, dermacentor variabilis, lepisma saccharina, lucoppia curviseta, margaropus annulatus, margaropus annulatus australis, ...192319868737
[not available]. 194620249314
insecticides to control the european corn borer in field corn. 194720264508
infestation of a raccoon by amblyomma americanum. 194720264533
rite of amblyomma americanum associated with possible tick paralysis. 194720340890
dipping in benzene hexachloride to control ambylomma americanum. 194720240410
[contribution to the study of the teratology of ixodids; 2 monsters obtained spontaneously in a strain of amblyomma nuttalli dönitz 1909]. 194914771470
serological characteristics of a pathogenic rickettsia occurring in amblyomma maculatum. 194915398100
experimental transmission of q fever by amblyomma cajennese. 194918141391
[amblyomma diemeniae, a new reptilian tick from australia, with observations on variant formations of the clava in the genus amblyomma]. 195015431890
tick paralysis; implicating amblyomma maculatum. 195114806800
[a note on the amblyomma astrion dönitz 1909]. 195114894811
[mexican amblyomma castanedai n. sp. (ixodidae)]. 195214957782
[notes on ticks. ii. a new species of the genus amblyomma and a new species of the genus ixodes (acari: ixodidae)]. 195213012856
notes on the ticks of guam with the description of amblyomma squamosum n. sp. (acarina: ixodidae). 195313053309
natural infection of the tick, amblyomma cajennense, with rickettsia rickettsii in panama. 195313065638
[key to african amblyomma]. 195313080826
a further case of gynandromorphism, observed on an amblyomma variegatum govurensis t. dias, 1950. 195313171567
natural occurrence of tularemia in the lone star tick, amblyomma americanus (linn.), and in dogs in arkansas. 195413138839
[various ixodes of the amblyomma marmoreum group in the collection of the museum of hamburg]. 195513314098
[study of amblyomma extraoculatum (neotropical species) based on the examination of the holotype]. 195513327254
[amblyomma, hyalomma, boophilus, rhipicephalus of africa are carriers of rickettsial & neorickettsial elements & occasionally of the two types of agents]. 195713489443
amblyomma imitator, a new species of tick from texas and mexico, and remarks on the synonymy of a. cajennense (fabricius) (acarina-ixodidae). 195813564359
[studies on the transmission of toxoplasma gondii. ii. note on the experimental transmission by the tick amblyomma cajennense]. 195813848246
the possible role of ticks as vectors of leptospire. ii. infection of the ixodid ticks, dermacentor andersoni and amblyomma maculatum, with leptospira pomona. 195913806052
[rectification of diagnosis: amblyomma tigrinum koch in place of amblyomma maculatum koch]. 195913836584
[apropos of amblyomma laticaudae warburton, 1933 (acarien ixodoidea) in new caledonia]. 196013739123
the fine structure of spermatids from the tick, amblyomma dissimili. 196114491069
[ixodological notes. ix. the oval complex of the genus amblyomma]. 196113861961
kohls gm: description of the female of dermacentor latus cooley and of amblyomma albopictum neumann (acarina-ixodidae). 196213879941
a fine-structure study on spermiogenesis in the tick amblyomma dissimill, with special reference to the development of motile processes. 196213973642
spermiogenesis in the tick, amblyomma dissimili, as revealed by electron microscopy. 196313973643
[observations on the morphology, biology and development of amblyomma compressum (macalister, 1872), the pangolin tick of west africa]. 196314011156
the laboratory rearing of amblyomma sparsum neumann, 1899. 196414124281
ticks (ixodidae) on migrating birds in egypt, spring and fall 1962.over a number of years studies have been carried out in egypt on the transport by migrating birds of ticks that may transmit pathogens of man and animals. in continuation of these investigations 11 036 birds migrating southwards through egypt were examined for ticks during the fall of 1962. the 881 infested birds (comprising 24 species and sub-species represented by 10 612 individuals) yielded 1442 ticks. tick-host relationships were similar to those of previous years except that in 1962 the pre ...196414163959
[a new species of amblyomma, parasite of madagascan tortoises: a. chabaudi n. sp. (acariens ixodidae)]. 196414250518
allergy in a horse due to amblyomma americanum. 196514296518
the bont tick (amblyomma hebraeum), exotic vector of heartwater found in the united states. 196514323370
[amblyomma chabaudi rageau, 1964. (ixodidae). description of the female and the nymph. morphologic variations of the male]. 19655864221
[isolation of toxoplasma gondii in naturally infected ixodidae of the genus amblyomma]. 19655892111
[isolation of a strain of rickettsia conori from larvae of amblyomma variegatum in guadeloupe]. 19666013770
engorgement and reproduction of lone star ticks (amblyomma americanum (l.)) treated with gamma-radiation. 19665296972
[amblyomma chabaudi rageau, 1964 (ixodidae). breeding in the laboratory. description of the larva. complementary observations on the nymph]. 19676062855
ticks in the south african zoological survey collection. 13. gynanders of boophilus decoloratus (koch, 1844) and amblyomma hebraeum koch, 1844. 19675586994
field vector studies of epizootic east coast fever. vi. the occurrence of amblyomma variegatum and a. lepidum in the east coast fever zones. 19685750916
eradication efforts against tropical bont tick, amblyomma variegatum, in the virgin islands. 19695766830
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
white-tailed deer, a new host for amblyomma inornatum. 19695816091
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
[the tick amblyomma testudinis (conil 1877): its development and effect on the host]. 19695380272
a new species of amblyomma from iguanas in the caribbean (acarina: ixodidae). 19695391156
[amblyomma variegatum of african or antillean origin and rickettsia of the dermacentroxenus genus]. 19694933938
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
mating behavior and reproduction of the lone star tick, amblyomma americanum. 19705449398
amblyomma (acarina: ixodidae) on white-tailed deer, odocoileus virginianus (zimmermann), from south texas with implications for theileriasis. 19705501217
[contribution to a study of the ticks of senegal (acarina, ixodoidea). i. larvae of amblyomma (koch) and hyalomma (koch)]. 19705508156
parasites of the collared peccary from texas.results of a survey of the parasites of the collared peccary (dicotyles tajacu angulatus) in texas are presented. three ectoparasites, amblyomma cajennense, dermacentor variabilis, and pulex porcinus were very common on peccaries from south texas, but less common or absent in arid west texas. sucking lice, pecaroecus javalii, were common on peccaries from west texas, but were not found in south texas. the known range of this louse in texas is extended into the big bend area. two ticks, amnblyomm ...197016509125
fine structure of tarsal sensilla in the tick amblyomma americanum (l.). 19715541841
mate-seeking by female amblyomma maculatum (acarina: ixodidae) on a bovine. 19714938838
[notes on the ticks of sicily, with descriptions of hyalomma detritum and amblyomma variegatum]. 19715147924
the ecology of the lone star tick, amblyomma americanum (l.), in two contrasting habitats in virginia (acarina: ixodidae). 19715153583
response of ovipositing amblyomma maculatum koch (acarina: ixodidae) to photoperiod. 19715160257
redescription of amblyomma fulvum neumann 1899 (acarina: ixodidae), a parasite of the giant anaconda in northern south america. 19725036198
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
2,6-dichlorophenol, sex pheromone of the lone star tick.the compound 2,6-dichlorophenol was identified from female lone star ticks, amblyomma americanum, and is believed to be a sex pheromone of this arthropod. the natural occurrence of a chlorinated organic compound in a land animal is new. the presence of similar compounds of exogenous origin is common in animals, but efforts to implicate an outside source for the halogenated phenol have failed.19725054146
bionomics of the gopher tortoise tick, amblyomma tuberculatum marx. 19725057497
permeability of tarsal sensilla in the tick amblyomma americanum l. (acarina, ixodidae). 19724647364
[detection of amblyomma gemma dön. (ixodidae) in the crimea]. 19724271864
ultrastructure of haller's organ in the tick amblyomma americanum (l.). 19724334800
permeability of tarsal sensilla in the tick amblyomma americanum l. (acarina, ixodidae).ticks were submerged in silver-protein solution, prior to fixation for electron microscopy, in order to trace the pathway of molecules in supposed tarsal chemoreceptors. sensilla with radially arranged cuticular canals (100-200 a in diameter) leading to the centrally located dendrites show silver granules inside the canals and in the central lumen, thus directly making contact with the dendrites. sensilla with large, plugged pores (1200 a) exhibit an accumulation of silver granules in the pore o ...197218631584
the ecology of amblyomma cajennense a parasite of man and animals in trinidad. 19734777424
the effect of immersion in water on the immature stages of the ixodid ticks-rhipicephalus appendiculatus neumann 1901 and amblyomma variegatum fabricius 1794. 19734787718
a search for the epidemic typhus agent in ethiopian ticks.the presence of antibodies to rickettsia prowazeki in domestic animals from several parts of africa, and the isolation of this rickettsia from the blood of goats and sheep and from ticks off cattle or camels in ethiopia, led to the hypothesis that r. prowazeki in nature may occur in an extrahuman cycle involving ticks and domestic animals. this study attempted to recover r. prowazeki from 2 624 ticks (4 genera, 10 species) collected in central and southern ethiopia. the ticks were examined by th ...19734204491
human skin lesions in east central state, nigeria due to the larvae of amblyomma variegatum (fabricius, 1794). 197316366347
fine structure of the central nervous system of dermacentor variabilis (say), amblyomma americanum (l.), and argas arboreus kaiser, hoogstraal, and kohls (ixodoidea). 19744852052
resistance of purebred brahman, hereford, and brahman times hereford crossbred cattle to the lone star tick, amblyomma americanum (acarina: ixodidae). 19744455918
some experiments on the transmission of theileria mutans (theiler, 1906) and theileria parva (theiler, 1904) by the ticks amblyomma variegatum (fabricius, 1794) and rhipicephalus appendiculatus neumann, 1901, in uganda. 19744607395
development of theileria mutants (aitong) in the tick amblyomma variegatum compared to that of t. parva (muguga) in rhipicephalus appendiculatus.a comparison was made between the development of theileria mutans (aitong) in adult amblyomma variegatum ticks and the development of t. parva (muguga) in adult rhipicephalus appendiculatus ticks. both batches of ticks dropped as engorged nymphs from cattle whose intraerythrocytic parasitemias were approximately 40%, and it was thus possible to make a direct comparison of the infection rates produced in their tick hosts in this experiment by the 2 species of theileria. ticks of the 2 batches wer ...1975809568
rocky mountain spotted fever (tick-borne typhus) in south carolina: an educational program and tick/rickettsial survey in 1973 and 1974.because the incidence of spotted fever is increasing in south carolina, campaigns were carried out in 1973 and 1974 to provide the public and medical practitioners, through pamphlets and news media, with information about spotted fever and the ticks which transmit the causative agent, rickettsia rickettsii. people were also invited to save and submit live ticks removed from vegetation, animals and humans, for examination by the hemolymph test. a total of 1,186 ticks consisting of 987 dermacentor ...1975811127
a review of the evidence in retrospect for a rickettsial etiology in bullis fever.the authors have presented evidence through work done 25-30 years ago for the rickettsial etiology of bullis fever, a forgotten epidemic which occurred with over a 1,000 cases among world war ii troops in training at camp bullis, texas. rickettsiae were recovered from blood and lymph nodes of patients and from ticks, amblyomma americanum, collected in the area. all patients gave a history of tick-bites. the human and tick strains of rickettsiae, carried in chick embryo culture and in animal pass ...19751103350
some aspects of the ecology and lifecycle of amblyomma cajennense (fabricius 1787) in trinidad and their influence on tick control measures.the distribution in trinidad of the tick amblyomma cajennense is defined, and the methods used to determine the boundaries of the infested areas are outlined. the relationships between climate, vegetation and husbandry methods and the distribution of the tick are described. monthly tick collections from specific animals to determine exact seasonal variations were not possible but a study was made of the normal life cycle under laboratory conditions, the results being used to assist in interpreti ...19751124964
evaluation of co2-baited traps for survey of amblyomma maculatum koch and dermacentor variabilis say (acarina: ixodidae). 19751159725
the effect of host species on the engorgement, molting success, and molted weight of the gulf coast tick, amblyomma maculatum koch (acarina: ixodidae). 19751159746
studies on the ecology of amblyomma marmoreum koch 1844 (acarnia: ixodidae).in the eastern cape province of south africa, larvae and nymphs of ablyomma marmoreum koch occur in habitats in which there is tree cover and herbaceous ground cover. immatures of a. marmoreum are parasitic on reptiles, birds, and mammals. adults occur only on reptiles. the major host for all stages is the moutain tortoise (geochelone pardalis), and in the home areas of tortoises the density of ticks is high. larvae are active in late summer and autumn. the rate of feeding is temperature-depende ...19751165558
reproduction in ticks (acari: ixodoidea). 4. effects of mechanical and chemical stimulation on oocyte development in amblyomma americanum. 19751172534
arsenic resistance in species of multi-host ticks in the republic of south africa and swaziland.a survey was made in the republic of south africa and swaziland to determine the incidence of arsenic resistance in multi-host ixodid ticks. arsenic resistant strains were found in the following species:- rihipicephalus appendiculatus, rhipicephalus evertsi, rhipicephalus capensis, amblyomma hebraeum and a species of hyalomma, tentatively identified as hyalomma rufipes. strains of haemaphysalis leachi, haemaphysalis silacea and ixodes pilosus were also tested.19751223285
host and distributional records for the tick amblyomma inornatum (banks) (acarina: ixodidae), with descriptions of the immature stages. 19751223295
[the tick amblyomma variegatum (ixodidae), apparently resistant to arsenic, in madagascar]. 19751230882
aggregation response of nymphs to pheromone(s) produced by males of the tick amblyomma hebraeum (koch). 19761250397
studies on theileriidae (sporozoa) in tanzania. i. tick transmission of haematoxenus veliferus.haematoxenus veliferus was experimentally transmitted in cattle on two occasions by the tick amblyomma variegatum; transmission was transstadial, from nymph to adult. theileria mutans and cowdria ruminatium were transmitted at the same time. h. veliferus infected at least 15% of red cells in a splenectomized steer and 10% in a normal steer. one experiment on transstadial transmission from larva to nymph was unsuccessful.19761258136
aride virus, a new ungrouped arbovirus infecting amblyomma loculosum ticks from roseate terns in the seychelles. 19761259597
studies on theileriidae (sporozoa) in tanzania. iii. experiments on the transmission of theileria mutans by rhipicephalus appendiculatus and amblyomma variegatum (acarina, ixodidae).the parasite considered to be theileria mutans in east africa could not be transmitted transstadially by rhipicephalus appendiculatus (seven attempts); it was transmitted by amblyomma variegatum in 6 out of 7 experiments. the possibility that the original south african t. mutans, transmissible by r. appendiculatus, and the parasite called t. mutans in east africa, are different species, has to be considered.1976824772
field evaluation of arthropod repellent netting as a ground cloth against ticks.tick repellent, wide-mesh net ground cloths were tested against amblyomma americanum (linnaeus) by the co2 bait technique. two repellents, n,n-diethyl-metatoluamide (deet) and 3 acetyl-2-(dimethyl-5-heptenyl)-oxazoladine, and two netting fabrics were compared. all combinations tested provided over 90% protection. the effectiveness of repellent ground cloths against chiggers is discussed.1976961999
peripheral nervous system of the ticks, amblyomma tuberculatum marx and argas radiatus railliet (acari: ixodoidea).the peripheral nervous system of an ixodid and an argasid tick include the following components: (1) paired optic, cheliceral and pedipalpal nerves and unpaired stomodeal nerve arising from the pre-esophageal portion of the central nervous system (synganglion); (2) 4 pairs of pedal nerve trunks (each with appendicular and hemal branches) and 4 major pairs of opisthosomal nerves (including the paraspiracular, genital, postlateral-myosomal, and ano-myosomal nerves); and (3) the lateral "sympatheti ...1976978369
trypanosomes in amblyomma americanum from oklahoma. 1976978370
accumulating process and concentration ratios of ingested blood meals in larvae and nymphs of ten species of ticks.the accumulating process and concentration ratios of ingested blood meals in the larvae and nymphs of amblyomma testudinarium, haemaphysalis campanulata, h. concinna, h. formosensis, h. hystricis, h. kitaokai, the bisexual and parthenogenetic strains of h. longicornis, h. megaspinosa, and ixodes persulcatus on rabbits and argas japonicus on chickens were comparatively investigated. the larvae and nymphs of the ixodid ticks examined and the larvae of a. japonicus concentrated the ingested blood m ...1976980120
comparative observations on some bionomics of japanese ixodid ticks under laboratory cultural conditions.seventeen species of japanese ixodid ticks of the genera amblyomma, boophilus, haemaphysalis, ixodes, and rhipicephalus were reared in the laboratory under almost the same cultural conditions. their major biological characters, such as feeding, molting, oviposition, and hatching, were summarized in tables. there were some differences in these bionomics among the species. the general characteristics common to all the ticks, except amblyomma testudinarium, were as follows. the feeding period in im ...1976980121
tick paralysis in a sheep caused by nymphs of amblyomma variegatum. a preliminary report. 1976988681
studies on theileriidae (sporozoa) in tanzania. v. preliminary experiments on a new method for infecting ticks with theileria parva and theileria mutans.bovine blood with a high parasitaemia of theileria mutans was injected through the cuticle into fully engorged nymphs of amblyomma variegatum which had recently detached from a rabbit. after moulting, they transmitted this parasite to a susceptible calf. rhipicephalus appendiculatus transmitted theileria parva in the same way, but results were negative with a. variegatum and t. parva. this method of infecting ticks appears promising for the isolation of theileria strains from the field, and migh ...19761006800
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