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Kuźna-Grygiel Wanda - - 2002
Developmental forms of Babesia spp. were studied in isolated salivary glands of Ixodes ricinus, subjected to the Feulgen reaction. The same ticks were also hosts to Babesia microti, which was determined by PCR amplification with primers specific to the fragment of a gene encoding the nuclear small sub-unit ribosomal RNA ...
Relevancy Score: Relevancy Score: 369
Belan I - - 1995
Ticks generally detach from their hosts into sites where they are later exposed to host species which may or may not be suitable for infestation. The question of how four species of ixodid ticks, with differing specificities, behave towards such potential host species was examined. Observations of the generalists, Aponomma ...
Relevancy Score: Relevancy Score: 369
Goddard J - - 1993
Lateral movement by adult Ixodes scapularis Say was measured by two mark-release-recapture studies in which ticks were collected by flagging, marked with tiny drops of model paint, released at predetermined spots within the study site, and subsequently recaptured during weekly sampling by flagging. In the first mark-release-recapture experiment, 10/23 ticks ...
Relevancy Score: Relevancy Score: 369
Rudakova S A - - 2005
A study of possible transovarial and transphase transmission of borreliae by the tick Dermacentor reticulatus is carried out. The possibility of borreliae transmission by the ticks of this species being infected spontaneously as well as experimentally is shown in principle. Although borreliae are preserved in the organism of D. reticulatus, ...
Relevancy Score: Relevancy Score: 369
Sattler P W - - 1986
Four natural populations and 4 laboratory colonies of Boophilus microplus (Canestrini) and a laboratory colony of Boophilus annulatus (Say) were subjected to electrophoretic analysis to determine levels of genetic similarity and genetic variability. Populations of B. microplus exhibited high genetic similarity (I = 0.984 +/- 0.012) indicating that all populations ...
Relevancy Score: Relevancy Score: 369
Spickett A M - - 1978
The effects of 60Co irradiation on Amblyomma hebraeum Koch, 1844 were studied by mating normal females to males irradiated to attain dosages of 0, 2, 4, 6 and 8 kilorad. The males of all 5 groups were observed mating 7 days after being placed on the host. The higher the ...
Relevancy Score: Relevancy Score: 369
Estrada-Peña A - - 1994
Cuticular hydrocarbon composition is used to explain hypothetical phylogenies among sympatric and allopatric populations of Amblyomma cajennense, A. variegatum and Ixodes ricinus tick species. The method proposed here uses a parsimony analysis of endemicity by disjunct biochemical data (PAEDB) based in the pattern of cuticular hydrocarbons. The advantage of our ...
Relevancy Score: Relevancy Score: 369
Hoogstraal H - - 1983
Haemaphysalis (Garnhamphysalis) rusae Kohls, previously known only from three male ticks from Mindanao, Philippines, is a seldom collected but probably common parasite of the Philippine deer, Cervus (Rusa) philippinus, and wild pig, Sus celebensis philippensis, in forests of Mindanao and Luzon. A single female taken from a wallaby in Papua ...
Relevancy Score: Relevancy Score: 369
McNemee Richard B RB - - 2003
In May 2000, a dead porcupine (Erethizon dorsatum Culiver) was found on an infrequently traveled dirt road at Camp Ripley, MN. The presence of late instar Calliphoridae suggested that the porcupine died within the past 4 to 7 d. Adult carrion (Silphidae) and rove (Staphylinidae) beetles were observed under the ...
Relevancy Score: Relevancy Score: 369
Gadallah A I - - 1991
Protein and nucleic acid levels from the ovaries of Hyalomma dromedarii Koch were determined during different stages of oogenesis. The concentrations of total protein, DNA, and RNA increased during oogenesis, reflecting the rapid developmental changes taking place in this tissue. Peak protein and DNA levels were reached in the fully ...
Relevancy Score: Relevancy Score: 369
Mannelli A - - 1997
Infestation of small rodents by ixodid ticks and frequency of host-seeking ticks collected by dragging were studied at Orecchiella Natural Park (Northern Apennines) in 1994 and 1995. Levels of infestation of Apodemus spp. by immature Dermacentor marginatus were higher in beech wood (5.1 larvae and 1.3 nymphs per mouse) than ...
Relevancy Score: Relevancy Score: 369
Horak I G - - 2001
The collection of the immature stages of Dermacentor rhinocerinus from host animals is described for the first time. These are the bushveld gerbil (Tatera leucogaster, from which larvae and nymphs were collected, the red veld rat (Aethomys crysophilus), from which a larva was collected, and the Natal multimammate rat (Mastomys ...
Relevancy Score: Relevancy Score: 369
Foelix R F - - 1972
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 ...
Relevancy Score: Relevancy Score: 369
Hunt L M - - 1986
Cuticular lipids were extracted from three species of Amblyomma ticks in hexane: dichloromethane and analysed by gas-liquid chromatography using both packed and capillary columns. Unlike many of the reported insect hydrocarbons, those of the Amblyomma ticks consisted mostly of branched paraffins and olefins and all three species of ticks are ...
Relevancy Score: Relevancy Score: 369
Sanches Gustavo S - - 2012
Oocyte maturation in the thelytokous parthenogenetic tick Amblyomma rotundatum was examined for the first time using light and scanning electron microscopy. The panoistic ovary lacks nurse and follicular cells and is a single continuous tubular structure forming a lumen delimited by the ovarian wall. Oocytes of tick species are usually ...
Relevancy Score: Relevancy Score: 369
Zahler M - - 1995
International Journal for Parasitology 25: 1413-1419. Dermacentor reticulatus and D. marginatus exhibit overlapping phenotypes. The possibility of conspecificity was investigated on the nucleotide level by comparing DNA sequences of the second internal transcribed spacer (ITS 2) of the rDNA gene. The inter-specific polymorphism was more than 20-times greater than the ...
Relevancy Score: Relevancy Score: 369
L'Hostis M - - 1994
A sample of 110 lactating dairy cows was examined to describe the attachment sites of female Ixodes ricinus ticks and to assess whether counts on one or two body areas can predict infestation and its level. Seventy per cent of the cows were infested by I. ricinus and the average ...
Relevancy Score: Relevancy Score: 369
Wilson M L - - 1993
The survival of unfed adult Hyalomma truncatum Koch held under different regimes of constant temperature (5, 17, 24, and 30 degrees C) and relative humidity (10, 50, and 80%) was monitored during > 1 yr. Longevity of this medically important African tick was shortest at the highest temperature and lowest ...
Relevancy Score: Relevancy Score: 369
Keirans J E - - 1998
A dichotomous identification key, with important characters illustrated by scanning electron micrographs, is provided for nymphs of the 9 species of the genus Amblyomma occurring in the United States. Species included are A. americanum (L.), A. cajennense (F.), A. dissimile Koch, A. imitator Kohls, A. inornatum (Banks), A. longirostre (Koch), ...
Relevancy Score: Relevancy Score: 369
Mitina G V - - 2011
Polymorphism of 10 Beauveria bassiana strains, isolated from Ixodes ricinus in Moldova, was evaluated using traditional (morphological and cultural properties) and molecular (RAPD patterns and ITS sequences) methods. The isolates differed greatly in morphological and cultural features, such as color, consistence, and growth rate. Four RAPD-PCR markers were used to ...
Relevancy Score: Relevancy Score: 369
Wilson M L - - 1998
Conditions influencing the distribution and abundance of Ixodes scapularis Say in North America have been the object of considerable study during the past 2 decades, resulting in new information about its expanding range, population structure, host associations, and environmental constraints. Variation in the methods, timing, or extent of sampling, the ...
Relevancy Score: Relevancy Score: 369
Barnard D R - - 1989
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 ...
Relevancy Score: Relevancy Score: 369
Gern L - - 1996
Feeding ticks are generally spatially distributed in clusters on vertebrate hosts. To test the effect of clustering on transmission of a tick-borne pathogen, Borrelia burgdorferi Johnson, Schmid, Hyde, Steigerwalt & Brenner-infected Ixodes ricinus L. nymphs and uninfected I. ricinus larvae were allowed to feed together in retaining chambers on uninfected ...
Relevancy Score: Relevancy Score: 369
Farid H A - - 1996
Rhipicephalus sanguineus sensu stricto is the taxonomic baseline for the R. sanguineus group of ticks which consists of four species in Egypt. Because of the potential confusion in the differentiation of species within the group, particularly in the Middle East, there is an urgent need for the development of new ...
Relevancy Score: Relevancy Score: 369
Aguirre D H - - 2000
Two llamas (Lama glama) were infested with approximately 20,000 Boophilus microplus larvae each and maintained under controlled conditions to collect the detached adult ticks. A total of 72 engorged and semi-engorged females were recovered with a mean weight of 163.0 +/- 70.6 mg. Sixty-three (87.5%) of these ticks oviposited and ...
Relevancy Score: Relevancy Score: 369
Chacon Samuel C - - 2004
The host relationships for most species of the genus Amblyomma are poorly known in Brazil. The ability of A. pseudoconcolor and A. cooperi to successfully feed on horses was investigated during ongoing research on the life cycle of these two species, which are primarily associated with wildlife. Results of these ...
Relevancy Score: Relevancy Score: 369
Solberg V B - - 1995
Repellent efficacy of deet (N,N-diethyl-3-methylbenzamide) and a piperidine, AI3-37220, was evaluated topically on human volunteers against lone star tick, Amblyomma americanum (L.), nymphs and adults in the field. AI3-37220, at 0.5 mg/cm2, provided > 90% repellency against adult and nymphal ticks over a 6-h test period and showed significantly better ...
Relevancy Score: Relevancy Score: 369
Zhioua E - - 1996
Free-living nymphs and adults from Rambouillet and Fontainebleau, 2 major forests of Ile de France, were collected to determine the infection rates of Ixodes ricinus L. by Borrelia burgdorferi (Johnson, Schmid, Hyde, Steigerwalt & Brenner). Field-collected I. ricinus nymphs and adults were screened for the presence of B. burgdorferi using ...
Relevancy Score: Relevancy Score: 369
Davey R B - - 1989
Ovicidal activity of coumaphos, diazinon, dioxathion, chlorpyrifos, and crotoxyphos applied topically at 0.125, 0.25, and 0.5% (AI) to 1-d-old, 10-d-old, and 20-d-old eggs of southern cattle tick, Boophilus microplus (Canestrini), was determined. All acaricides produced some disruption of hatching of eggs in all age classes. Coumaphos, diazinon, dioxathion, and chlorpyrifos ...
Relevancy Score: Relevancy Score: 369
Schulze T L - - 1994
To determine the feasibility of suppressing Ixodes scapularis Say populations in a large, hyperendemic residential community, several rates of granular carbaryl were applied by ground and air to the shrub layer and wooded buffers of a forested residential community during the peak activity period of nymphs. Granular carbaryl significantly reduced ...
Relevancy Score: Relevancy Score: 369
Kubasu S S - - 2007
Differences in biological parameters of Rhipicephalus appendiculatus Neumann, the brown ear tick, were investigated. They included engorgement weight of larvae, nymphs and females, fecundity, size of unfed females and mean larval and nymphal duration post-repletion on rabbits to completion of the moult. Ticks were collected from four geographically isolated zones ...
Relevancy Score: Relevancy Score: 369
Ginsberg H S - - 1991
Lone star ticks, Amblyomma americanum comprised a significantly greater proportion of total ticks flagged on eastern Long Island and Fire Island, New York, in 1986 and 1990 than in samples reported by other authors from the 1940s (when A. americanum was not collected by flagging or from hosts) and the ...
Relevancy Score: Relevancy Score: 369
Wüest J - - 1978
Spermatids and spermatozoa of Amblyomma hebraeum were examined by scanning and transmission electron microscopy as well as by freeze-etch and freeze-fracture techniques. The external surface of the spermatid is smooth except for a rim of two parallel grooves near the anterior apex. This rim probably marks the level at which ...
Relevancy Score: Relevancy Score: 369
Dillinger S C G - - 2002
Female Ixodes ricinus (ticks) are able to consume several times as much as their own weight in food. The body volume increases without the animal moulting. Special structural and material characteristics of the cuticular exoskeleton render this phenomenon possible. Only the alloscutum, which has a very pronounced lamellar structure, extends. ...
Relevancy Score: Relevancy Score: 369
Carroll J F - - 1996
Silt fence barriers were set along pasture fencelines and evaluated as a method of restricting the dispersal of blacklegged tick, Ixodes scapularis Say, adults and nymphs from woodlands into adjacent horse pastures. The barriers received no acaricidal treatment for the 1st cohort of adults. Thereafter the woods side of the ...
Relevancy Score: Relevancy Score: 369
Norval R A - - 1988
Adult Amblyomma hebraeum ticks were exposed at 14-day intervals on five sheep on 46 occasions and on three cattle on 15 occasions to determine the effects of repeated feeding. The engorged weight and percentage of ticks which fed successfully on sheep declined significantly at first but subsequently they increased. On ...
Relevancy Score: Relevancy Score: 369
Norval R A - - 1975
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 ...
Relevancy Score: Relevancy Score: 369
Carroll J F - - 2001
Host-seeking male and female blacklegged ticks, Ixodes scapularis Say, exhibited an arrestant response when contacting substances from front and rear interdigital glands of male and female white-tailed deer, Odocoileus virginianus (Zimmermann). Female I. scapularis responded positively to substances from interdigital glands on the fore legs and hind legs of female ...
Relevancy Score: Relevancy Score: 369
De Meneghi D - - 1993
During the period 1988-1991, reptiles (23 snakes, 36 tortoises, 25 chameleons and 2 monitor lizards) from Central, Lusaka and Southern Provinces of Zambia were caught and checked for ticks. Only 2 snakes, respectively one Python sebae (Gmelin, 1789) and one Bitis arietans (Merrem, 1820), 8 tortoises, respectively seven Geochelone pardalis ...
Relevancy Score: Relevancy Score: 369
Walker A R - - 1996
The opisthosomal integument and sensilla auriformia of Rhipicephalus appendiculatus Neumann larvae, nymphs, females and males, both unfed, fed, and during molt, were examined by light and electron microscopy in relation to semiochemical production. The integument consists of epidermis, endocuticle, exocuticle, epicuticle, a superficial wax layer and a variable additional deposit. ...
Relevancy Score: Relevancy Score: 369
Zhu K - - 1997
Hemolytic activity was identified in the saliva of Amblyomma americanum (L.) when red blood cells from sheep were incubated with tick saliva in the presence of phosphatidylcholine and sodium deoxycholate. The hemolytic activity was destroyed by boiling or treating with trypsin. The hemolytic activity in tick saliva was calcium-dependent, and ...
Relevancy Score: Relevancy Score: 369
Allan S A - - 1998
The tortoise tick Amblyomma marmoreum Koch was found to be established on a reptile facility in central Florida. Over a 5-mo period, 443 ticks were collected from tortoises, dogs, and vegetation. Collections from hosts were primarily from 3 species of exotic tortoises, including leopard tortoises, Aldabra tortoises, and yellow-footed tortoises. ...
Relevancy Score: Relevancy Score: 369
Giménez-Pardo C - - 2008
In this work has been made a detection and preliminary characterization of some hydrolases in whole extracts from unfed adult males and females of Hyalomma lusitanicum, one of the vectors for Theileria annulata that causes Mediterranean theileriosis in cattle. We have elected as targets, proteases as enzymes implicated in the ...
Relevancy Score: Relevancy Score: 369
Horak I G - - 1987
A variety of mammal and bird species in the Mountain Zebra National Park, eastern Cape Province, were examined for Ixodes rubicundus. In addition, caracal (Felis caracal) from the park and its vicinity as well as from the Graaff-Reinet region of the Karoo were examined. Amongst the animals collected, the red ...
Relevancy Score: Relevancy Score: 369
Nava S - - 2009
The seasonality of immature stages of Amblyomma tigrinum was studied in an area of the Chaco phytogeographical province in Córdoba, Argentina by monthly collection of larvae from ground feeding birds and Sigmodontinae rodents, and nymphs from Caviidae rodents from May 2005 to April 2007. An apparent peak of abundance was ...
Relevancy Score: Relevancy Score: 369
De Boer R - - 1993
Chemical and mechanical methods of removing Ixodes ricinus (L.) attached to the skin of pigs and sheep were tested experimentally. Three frequently advocated chemical treatments (gasoline, fingernail polish, and methylated spirit) failed to induce self-detachment of the ticks within 30 min. Also, the success of the subsequent mechanical removal was ...
Relevancy Score: Relevancy Score: 369
Samish M - - 1999
The biocidal efficacy of entompathogenic nematodes against engorged females of Boophilus annulatus (Say) was evaluated in soil-filled buckets in a greenhouse, where conditions resemble nature. The 9 tested nematode strains differed markedly in their effect upon tick mortality. The Mexican strain of Steinernema carpocapsae was most efficient, inducing 100% tick ...
Relevancy Score: Relevancy Score: 369
Chemini C - - 1997
The most important tick-deer system potentially supporting the epidemiology of Lyme disease in the Italian Alps is that regarding Ixodes ricinus (L.) and roe deer (Capreolus capreolus L.). In this study, the pattern of tick infestation on 562 male roe deer harvested in September 1994 in 56 game districts of ...
Relevancy Score: Relevancy Score: 369
Sutáková G - - 1989
Rickettsiella phytoseiuli naturally occurring in Phytoseiulus persimilis mites was cultivated in adult female Dermacentor reticulatus ticks. It demonstrates all six known developmental stages: dense, intermediate, bacterial, giant, crystal-forming and small dark particles. These stages of rickettsiae were found in salivary glands, Malpighian tubules, synganglion, ovaries, tracheal complex, haemolymph, fat body ...
Relevancy Score: Relevancy Score: 369
Gomes A F - - 1991
Rhipicephalus duttoni Neumann is a common tick species in Angola, where its distribution is sympatric with that of R. zambeziensis Walker. Evidence is presented supporting R. duttoni as a distinct species of the R. appendiculatus group. R. duttoni showed a species-specific glucose phosphate isomerase isoenzyme pattern. The ticks, which are ...
Relevancy Score: Relevancy Score: 369
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