Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
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| the efficacy of advantix® to prevent transmission of ehrlichia canis to dogs by rhipicephalus sanguineus ticks. | the capacity of a topical combination of imidacloprid and permethrin (advantix(®)) to prevent transmission of ehrlichia canis was studied in two groups of six dogs. one group served as controls, whereas the other group was treated. all dogs were exposed to e. canis-infected rhipicephalus sanguineus ticks on days 7, 14, 21 and day 28 post acaricidal treatment. the adult r. sanguineus ticks were released into the individual kennels of the dogs to simulate natural tick exposure. in situ tick counts ... | 2013 | 24135158 |
| comparative analyses of mitochondrial and nuclear genetic markers for the molecular identification of rhipicephalus spp. | the genus rhipicephalus (acari: ixodidae) comprises a large number of vectors of pathogens of substantial medical and veterinary concern; however, species identification based solely on morphological features is often challenging. in the present study, genetic distance within selected rhipicephalus species (i.e., rhipicephalus bursa, rhipicephalus guilhoni, rhipicephalus muhsamae, rhipicephalus sanguineus sensu lato and rhipicephalus turanicus), were investigated based on molecular and phylogene ... | 2013 | 24103336 |
| update on tick-borne rickettsioses around the world: a geographic approach. | tick-borne rickettsioses are caused by obligate intracellular bacteria belonging to the spotted fever group of the genus rickettsia. these zoonoses are among the oldest known vector-borne diseases. however, in the past 25 years, the scope and importance of the recognized tick-associated rickettsial pathogens have increased dramatically, making this complex of diseases an ideal paradigm for the understanding of emerging and reemerging infections. several species of tick-borne rickettsiae that wer ... | 0 | 24092850 |
| comparative analysis of mitochondrial markers from four species of rhipicephalus (acari: ixodidae). | mitochondrial sequences of four mitochondrial markers: 12s rrna, 16s rrna, cytochrome c oxidase subunit i (cox1) and cytochrome b (cytb) from four rhipicephalus species were analyzed to establish genetic relationships and enable molecular identification. field-collected samples from the species rhipicephalus annulatus, rhipicephalus bursa, rhipicephalus sanguineus and rhipicephalus turanicus were amplified by pcr and compared with genbank™ annotated sequences. pcr products were obtained using pr ... | 2013 | 24091196 |
| an occurrence of clinical eperythrozoonosis in a german shepherd dog and its therapeutic management. | eperythrozoon spp.-a rickettsial (mycoplasma) pathogen of the mammalian erythrocytic cell membrane, has been recognised to cause non specific, sporadic, febrile and haemolytic clinical disease in a variety of livestock, especially food animals. however, clinical eperythrozoonosis in companion animals seems not documented so far. an adult male german shepherd dog, aged 10.5 years and weighing 45 kg with clinical history of persistent mild fever in morning hours, depression and anorexia for the pa ... | 2012 | 24082524 |
| effect of attractant sex pheromone on immature larval stages of ixodid tick species. | attractant sex pheromone (asp) 2,6-dichloro phenol was used in the current study to evaluate the percentage attraction and the behavioural responses of the five ixodid tick species namely rhipicephalus sanguineus, rhipicephalus microplus (boophilus microplus), haemaphysalis bispinosa, rhipicephalus haemaphysaloides and hyalomma marginatum using petridish bioassay. two concentrations of 2,6-dcp (0.1 m and 0.05 m) was used for the larval stages of all five ixodid tick species of which 0.1 m concen ... | 2012 | 24082519 |
| asymptomatic petechial eruption on the lower legs. | the authors report an unusual case of rocky mountain spotted fever that presented as an asymptomatic petechial eruption on the lower legs. rocky mountain spotted fever is rare in new england and, as such, is typically not on the differential diagnosis when presented with such patients. what began as an asymptomatic eruption progressed to more classic signs of the disease, including a positive rocky mountain spotted fever titer. the patient was successfully treated with doxycydine and within a sh ... | 0 | 24062875 |
| infection of domestic dogs in peru by zoonotic bartonella species: a cross-sectional prevalence study of 219 asymptomatic dogs. | bartonella species are emerging infectious organisms transmitted by arthropods capable of causing long-lasting infection in mammalian hosts. among over 30 species described from four continents to date, 15 are known to infect humans, with eight of these capable of infecting dogs as well. b. bacilliformis is the only species described infecting humans in peru; however, several other bartonella species were detected in small mammals, bats, ticks, and fleas in that country. the objective of this st ... | 2013 | 24040427 |
| serological survey of ehrlichia species in dogs, horses and humans: zoonotic scenery in a rural settlement from southern brazil. | the aims of this study were to determine the seroprevalence of ehrlichia spp. and risk factors for exposure in a restricted population of dogs, horses, and humans highly exposed to tick bites in a brazilian rural settlement using a commercial elisa rapid test and two indirect immunofluorescent assays (ifa) with e. canis and e. chaffeensis crude antigens. serum samples from 132 dogs, 16 horses and 100 humans were used. fifty-six out of 132 (42.4%) dogs were seropositive for e. canis. dogs > one y ... | 0 | 24037288 |
| detection and genetic characterization of tick-borne encephalitis virus (tbev) derived from ticks removed from red foxes (vulpes vulpes) and isolated from spleen samples of red deer (cervus elaphus) in croatia. | tick-borne encephalitis (tbe) is a growing public health concern in central and northern european countries. even though tbe is a notifiable disease in croatia, there is a significant lack of information in regard to vector tick identification, distribution as well as tbe virus prevalence in ticks or animals. the aim of our study was to identify and to investigate the viral prevalence of tbe virus in ticks removed from red fox (vulpes vulpes) carcasses hunted in endemic areas in northern croatia ... | 2014 | 24035586 |
| molecular detection of anaplasma platys in a naturally-infected cat in brazil. | following the accidental finding of inclusion bodies similar to anaplasma platys in a stained blood smear from a cat, dna analysis of the 16s rrna gene was performed and 100% identity was found with different strains of a. platys. these data confirm that cats are susceptible to parasitism by a. platys. | 2010 | 24031508 |
| molecular analysis of the rrna genes of babesia spp and ehrlichia canis detected in dogs from ribeirão preto, brazil. | the partial dna sequences of the 18s rrna gene of babesia canis and the 16s rrna gene of ehrlichia canis detected in dogs from ribeirão preto, brazil, were compared to sequences from other strains deposited in genbank. the e. canis strain circulating in ribeirão preto is identical to other strains previously detected in the region, whereas the subspecies babesia canis vogeli is the main babesia strain circulating in dogs from ribeirão preto. | 2009 | 24031351 |
| in vitro isolation and molecular characterization of an ehrlichia canis strain from são paulo, brazil. | an ehrlichia canis isolate was obtained from an naturally infected dog exhibiting clinical signs of ehrlichiosis in são paulo municipality, state of são paulo, brazil. the isolate was characterized by pcr and dna sequencing of portions of the ehrlichial genes dsb, 16srrna, and p28. partial dsb and 16s rrna sequences were identical to three and five other e. canis strains, respectively, from different countries and continents (including north america, africa, asia and europe). conversely, the p28 ... | 2008 | 24031251 |
| proteome of rhipicephalus sanguineus tick saliva induced by the secretagogues pilocarpine and dopamine. | one dimensional gel electrophoresis was used to separate proteins from the saliva of rhipicephalus sanguineus female ticks fed on rabbits. gel slices were subjected to tryptic digestion and analyzed by reversed-phase hplc followed by ms/ms analysis. the data were compared to a database of salivary proteins of the same tick and to the predicted proteins of the host. saliva was obtained by either pilocarpine or dopamine stimulation of partially fed ticks. electrophoretic separations of both yielde ... | 2013 | 24029695 |
| mediterranean spotted fever in southeastern romania. | although cases of mediterranean spotted fever (msf) have been reported for decades in southeastern romania, there are few published data. we retrospectively studied 339 patients, diagnosed with msf at the national institute of infectious diseases "prof. dr. matei bals" between 2000 and 2011, in order to raise awareness about msf in certain regions of romania. according to the raoult diagnostic criteria 171 (50.4%) had a score >25 points. mean age was 52.5 years. one hundred and fifty-five (90.6% ... | 2013 | 24024190 |
| action of the insect growth regulator fluazuron, the active ingredient of the acaricide acatak®, in rhipicephalus sanguineus nymphs (latreille, 1806) (acari: ixodidae). | the present study evaluated the efficacy of fluazuron (active ingredient of the acaricide acatak®) and its effects on rhipicephalus sanguineus nymphs fed on rabbits exposed to different doses of this insect growth regulator. three different doses of fluazuron (20 mg/kg, 40 mg/kg, and 80 mg/kg) were applied on the back of hosts (via "pour on"), while distilled water was applied to the control group. on the first day of treatment with fluazuron (24 h), hosts were artificially infested with r. sang ... | 2013 | 24000046 |
| the occurrence of autophagic cell death in the tegument of rabbits pre-infested with rhipicephalus sanguineus and exposed to selamectin (active principle of acaricide pfizer revolution®). | ticks of rhipicephalus sanguineus species have great medical and veterinary importance for being a vector of various diseases. in an attempt to minimize their action on the host, people have resorted to chemical control by using various acaricides, such as selamectin. although previous studies have demonstrated its toxic action in domestic animals, no studies focused on the detection of cell death when exposed to selamectin. for this reason, the technique for detecting autophagic cell death was ... | 2013 | 23983162 |
| efficacy of an imidacloprid/flumethrin collar against fleas, ticks and tick-borne pathogens in dogs. | tick-borne diseases comprise a group of maladies that are of substantial medical and veterinary significance. a range of tick-borne pathogens, including diverse species of bacteria and protozoa, can infect both dogs and humans. hence, the control of tick infestations is pivotal to decrease or prevent tick-borne pathogen transmission. therefore, different commercial products with insecticidal, repellent or both properties have been developed for use on dogs. recently, a collar containing a combin ... | 2013 | 23972013 |
| tick salivary compounds: their role in modulation of host defences and pathogen transmission. | ticks require blood meal to complete development and reproduction. multifunctional tick salivary glands play a pivotal role in tick feeding and transmission of pathogens. tick salivary molecules injected into the host modulate host defence responses to the benefit of the feeding ticks. to colonize tick organs, tick-borne microorganisms must overcome several barriers, i.e., tick gut membrane, tick immunity, and moulting. tick-borne pathogens co-evolved with their vectors and hosts and developed m ... | 2013 | 23971008 |
| transmission of ehrlichia canis by rhipicephalus sanguineus ticks feeding on dogs and on artificial membranes. | a south african strain of ehrlichia canis was isolated and used to infect a laboratory-bred beagle dog. rhipicephalus sanguineus nymphs, which fed on this dog, moulted to adult ticks which carried infection rates of e. canis between 12% and 19% and were used in a series of in vivo and in vitro experiments. five groups of 6 dogs were challenged with the infected r. sanguineus ticks, which were removed 24h, 12h, 6h or 3h after the ticks had been released onto the dogs. the animals were monitored f ... | 2013 | 23962826 |
| blood parasites of livestock in certain regions in saudi arabia. | blood samples from camels, sheep, goats and cattle from six regions in saudi arabia were examined for blood parasites. asir region camels were disinfected while those of the eastern, jazan, northern frontiers, riyadh and tabouk regions were infected with trypanosoma evansi (5-40%), those of riyadh and the eastern regions were infected with dipetalonema evansi (1-6%) and those of the eastern, jazan and riyadh regions were infected with eperythrozoon species (8-20%). sheep and goats of all tested ... | 0 | 23961044 |
| molecular detection of anaplasma platys and babesia gibsoni in dogs in malaysia. | this study reports for the first time molecular detection of anaplasma platys infection in 4 (13.3%) of 30 malaysian dogs investigated. a low occurrence (3.3%) of babesia gibsoni was also noted, being detected in one of the 30 dogs. rickettsia, bartonella, orientia tsutsugamushi, and ehrlichia dna were not detected in the dog blood samples. the role of a. platys as an agent of canine anaplasmosis and its transmission through rhipicephalus sanguineus ticks merits further investigation. | 2013 | 23959500 |
| comparative evaluation of infected and noninfected amblyomma triste ticks with rickettsia parkeri, the agent of an emerging rickettsiosis in the new world. | the distribution of rickettsia parkeri in south america has been associated with amblyomma triste ticks. the present study evaluated under laboratory conditions two colonies of a. triste: one started from engorged females that were naturally infected by r. parkeri (designated as infected group); the other started from noninfected females (designated as control group). both colonies were reared in parallel for five consecutive generations. tick-naïve domestic rabbits were used for feeding of each ... | 2013 | 23936795 |
| ectoparasites and anti-leishmania antibodies: association in an observational case-control study of dogs from a brazilian endemic area. | it has been proposed that the transmission of canine visceral leishmaniasis might involve the participation of mechanical vectors, including ticks of the family ixodidae, in particular the brown dog tick rhipicephalus sanguineus, and the cat flea ctenocephalides felis felis. here, the association between the infestation by r. sanguineus and c. felis felis and the occurrence of anti-leishmania antibodies was evaluated in an observational case-control study of dogs living in a brazilian endemic ar ... | 2013 | 23932895 |
| evasin-4, a tick-derived chemokine-binding protein with broad selectivity can be modified for use in preclinical disease models. | rhipicephalus sanguineus, the common brown dog tick, produces several chemokine-binding proteins which are secreted into the host in its saliva to modulate the host response during feeding. two of these demonstrate very restricted selectivity profiles. here, we describe the characterization of the third, which we named evasin-4. evasin-4 was difficult to produce recombinantly using its native signal peptide in hek cells, but expressed very well using the urokinase-type plasminogen activator sign ... | 2013 | 23910450 |
| activity of the plant-based repellent, tt-4302 against the ticks amblyomma americanum, dermacentor variabilis, ixodes scapularis and rhipicephalus sanguineus (acari: ixodidae). | the plant-based repellent tt-4302 (5 % geraniol) was compared to deet (15 %) in laboratory two-choice bioassays against the ticks amblyomma americanum, dermacentor variabilis, ixodes scapularis, and rhipicephalus sanguineus. at 2.5 and 3.5 h after treatment of filter paper with tt-4302, 100 % repellency was observed for all species at both time points with the exception of i. scapularis at the 3.5 h evaluation where repellency was 95.8 %. deet was 100 % repellent at both time points for d. varia ... | 2014 | 23907554 |
| characterization of haemaphysalis flava (acari: ixodidae) from qingling subspecies of giant panda (ailuropoda melanoleuca qinlingensis) in qinling mountains (central china) by morphology and molecular markers. | tick is one of important ectoparasites capable of causing direct damage to their hosts and also acts as vectors of relevant infectious agents. in the present study, the taxa of 10 ticks, collected from qinling giant pandas (ailuropoda melanoleuca qinlingensis) in qinling mountains of china in april 2010, were determined using morphology and molecular markers (nucleotide its2 rdna and mitochondrial 16s). microscopic observation demonstrated that the morphological features of these ticks were simi ... | 2013 | 23894541 |
| immunoproteomic identification of antigenic salivary biomarkers detected by ixodes ricinus-exposed rabbit sera. | ixodes ricinus, the primary vector of tick-borne disease in europe, is currently expanding its distribution area and its activity in many countries. antibody responses to tick salivary antigens have been proposed as an alternative marker of exposure to tick bites. however, the identification of the i. ricinus corresponding antigens remains elusive. using rabbits artificially exposed to i. ricinus and 2 other european tick species (rhipicephalus sanguineus and dermacentor reticulatus) as controls ... | 2013 | 23890749 |
| morphological and genetic diversity of rhipicephalus sanguineus sensu lato from the new and old worlds. | the taxonomic status of the brown dog tick (rhipicephalus sanguineus sensu stricto), which has long been regarded as the most widespread tick worldwide and a vector of many pathogens to dogs and humans, is currently under dispute. | 2013 | 23880226 |
| ecology, biology and distribution of spotted-fever tick vectors in brazil. | spotted-fever-caused rickettsia rickettsii infection is in brazil the major tick-borne zoonotic disease. recently, a second and milder human rickettsiosis caused by an agent genetically related to r. parkeri was discovered in the country (atlantic rainforest strain). both diseases clearly have an ecological background linked to a few tick species and their environment. capybaras (hydrochoerus hydrochaeris) and amblyomma cajennense ticks in urban and rural areas close to water sources are the mai ... | 2013 | 23875178 |
| endogenous tick viruses and modulation of tick-borne pathogen growth. | ticks transmit a wide range of viral, bacterial and protozoan pathogens, many of which can establish persistent infections of lifelong duration in the vector tick and in some cases are transmitted transovarially to the next generation. in addition many ixodid and argasid tick cell lines and, by inference the parent ticks from which they were derived, harbor endogenous viruses (etv) of which almost nothing is known. in general, low level persistent infections with viral pathogens (arboviruses) ar ... | 2013 | 23875176 |
| the activity of ccl18 is principally mediated through interaction with glycosaminoglycans. | the cc chemokine ligand 18 (ccl18) was first identified as a chemoattractant for naïve t cells. it has been reported to recruit t and b lymphocytes, and we show here, natural killer (nk) cells, but with low efficacy. investigation of its ability to elicit g-protein-coupled signaling showed that it does not involve extracellular signal-regulated kinase (erk) phosphorylation, and it is not able to induce receptor internalization, as assessed on ccr3. ccl18 has recently been reported to possess act ... | 2013 | 23874339 |
| crimean-congo hemorrhagic fever in iran. | the presence of crimean-congo hemorrhagic fever virus (cchfv) in iran was first identified in studies of livestock sera and ticks in the 1970s, but the first human infection was not diagnosed until 1999. since that time, the number of cases of cchf in iran has markedly increased. through january 2012, articles in the published literature have reported a total of 870 confirmed cases, with 126 deaths, for a case fatality rate (cfr) of 17.6%. the disease has been seen in 26 of the country's 31 prov ... | 2013 | 23872313 |
| spotted fever group rickettsiae in dermacentor reticulatus and haemaphysalis punctata ticks in the uk. | spotted fever group (sfg) rickettsiae have recently been identified for the first time in uk ticks. this included the findings of rickettsia helvetica in ixodes ricinus and rickettsia raoultii in dermacentor reticulatus. this paper further investigates the occurrence of sfg rickettsiae in additional geographically distinct populations of d. reticulatus, and for the first time, investigates the occurrence of sfg rickettsiae in uk populations of haemaphysalis punctata ticks. | 2013 | 23870197 |
| efficacy of a combination of 10% imidacloprid and 4.5% flumethrin (seresto®) in slow release collars to control ticks and fleas in highly infested dog communities. | dog communities living in kennels are at high risk of being infected by ticks and fleas. in spite of the indubitable efficacy of several topical ectoparasiticides registered for the control of ectoparasites in dogs, the short period of action and the price of these products limit their use in dog communities. this paper reports on the efficacy of imidacloprid/flumethrin slow release collars to cure dogs highly infested with ectoparasites and to prevent infestations for 8 months in a refuge with ... | 2013 | 23866926 |
| infection with hemotropic mycoplasma species in patients with or without extensive arthropod or animal contact. | pcr amplification targeting the 16s rrna gene was used to test individuals with and without extensive arthropod and animal contact for the possibility of hemotropic mycoplasma infection. the prevalence of hemotropic mycoplasma infection (4.7%) was significantly greater in previously reported cohorts of veterinarians, veterinary technicians, spouses of veterinary professionals, and others with extensive arthropod exposure and/or frequent animal contact than in a previously reported cohort of pati ... | 2013 | 23863574 |
| investigation of activity of monoterpenes and phenylpropanoids against immature stages of amblyomma cajennense and rhipicephalus sanguineus (acari: ixodidae). | the objective of this study was to assess the acaricidal activity of carvacrol, thymol, eugenol, and (e)-cinnamaldehyde on unengorged larvae and nymphs of amblyomma cajennense and rhipicephalus sanguineus, using the modified larval packet test. carvacrol, eugenol, and (e)-cinnamaldehyde were tested at concentrations of 2.5, 5.0, 10.0, 15.0, and 20.0 μl/ml, while thymol was tested at concentrations of 2.5, 5.0, 10.0, 15.0, and 20.0 mg/ml, in all cases with 10 repetitions per treatment. for the a. ... | 2013 | 23842886 |
| theileria annae in a young swedish dog. | a severe regenerative anemia was detected in a 12-week-old mixed breed puppy in sweden. a small protozoan parasite was observed in erythrocytes on a blood smear. it was initially suspected to be babesia gibsoni based on its size and because b. gibsoni was previously recorded in sweden. surprisingly, specific polymerase chain reaction analysis identified the protozoan as theileria annae. t. annae is endemic in northwest spain, is very uncommonly reported elsewhere and has never been recorded in s ... | 2013 | 23842507 |
| preliminary assessment of microbiome changes following blood-feeding and survivorship in the amblyomma americanum nymph-to-adult transition using semiconductor sequencing. | the physiology of ticks supports a diverse community of non-pathogenic and pathogenic organisms. this study aims to initially characterize the microbial community present within colony-reared amblyomma americanum using pcr of the variable region 5 of the 16s rrna gene followed by semiconductor sequencing and classification of sequence data using the ribosomal database project and mg-rast analysis tools. comparison of amplicon library datasets revealed changes in the microbiomes in newly engorged ... | 2013 | 23826210 |
| novel immunomodulators from hard ticks selectively reprogramme human dendritic cell responses. | hard ticks subvert the immune responses of their vertebrate hosts in order to feed for much longer periods than other blood-feeding ectoparasites; this may be one reason why they transmit perhaps the greatest diversity of pathogens of any arthropod vector. tick-induced immunomodulation is mediated by salivary components, some of which neutralise elements of innate immunity or inhibit the development of adaptive immunity. as dendritic cells (dc) trigger and help to regulate adaptive immunity, the ... | 2013 | 23825947 |
| action of andiroba oil and permethrin on the central nervous and reproductive systems of rhipicephalus sanguineus (latreille, 1806) (acari: ixodidae) ticks females. a confocal study. | research for acaricides with lower toxicity and impact on the environment has been intensified. an alternative would be the use of natural compounds or of synthetic products in lower concentrations than the ones sold commercially. thus, this study describes the action of andiroba seed oil on the nuclei of the ovary and synganglion cells of rhipicephalus sanguineus, and presents an analysis of the nuclear morphology of the nervous system cells of this tick species when exposed to permethrin. the ... | 2013 | 23823663 |
| a survey of ectoparasites infesting urban and rural dogs of maranhão state, brazil. | this study evaluated for the first time, ectoparasite infestations on dogs from urban and rural areas of the continental land of the state of maranhão, northeastern brazil. in total, 622 dogs were examined for ectoparasite infestations. overall, 392 (63.0%) were infested with ectoparasites, 154 (51.3%) of 300 urban dogs and 238 (73.9%) of 322 rural dogs. five species of ectoparasites were found, three ticks [rhipicephalus sanguineus (latreille), amblyomma ovale koch, and amblyomma cajennense (f. ... | 2013 | 23802466 |
| spatial disaggregation of tick occurrence and ecology at a local scale as a preliminary step for spatial surveillance of tick-borne diseases: general framework and health implications in belgium. | the incidence of tick-borne diseases is increasing in europe. sub national information on tick distribution, ecology and vector status is often lacking. however, precise location of infection risk can lead to better targeted prevention measures, surveillance and control. | 2013 | 23800283 |
| ticks and associated pathogens collected from dogs and cats in belgium. | although ixodes spp. are the most common ticks in north-western europe, recent reports indicated an expanding geographical distribution of dermacentor reticulatus in western europe. recently, the establishment of a d. reticulatus population in belgium was described. d. reticulatus is an important vector of canine and equine babesiosis and can transmit several rickettsia species, coxiella burnetii and tick-borne encephalitis virus (tbev), whilst ixodes spp. are vectors of pathogens causing babesi ... | 2013 | 23777784 |
| imidacloprid 10 % / flumethrin 4.5 % collars (seresto®, bayer) successfully prevent long-term transmission of ehrlichia canis by infected rhipicephalus sanguineus ticks to dogs. | the objective of this study was to determine the empirical efficacy of imidacloprid 10 %/flumethrin 4.5 % (seresto®) collars in preventing long-term transmission of ehrlichia canis by infected rhipicephalus sanguineus ticks to dogs. the study was a parallel group design, single centre, randomised, non-blinded, controlled, long-term efficacy study. the treatment group of 8 dogs was fitted with seresto® collars, the untreated control group of 8 dogs received no collars. ehrlichia canis-infected ti ... | 2013 | 23774841 |
| tick vectors of cercopithifilaria bainae in dogs: rhipicephalus sanguineus sensu lato versus ixodes ricinus. | recently, dermal microfilariae of a cercopithifilaria species (spirurida, onchocercidae), namely cercopithifilaria bainae , were detected in dogs from several geographical areas of the mediterranean basin. evidence from both laboratory and field studies support the role of the brown dog tick, rhipicephalus sanguineus sensu lato, as an intermediate host of this nematode. in the present study, we investigated the competence of ixodes ricinus nymphs as vectors of c. bainae. on november 2012, fully ... | 2013 | 23771741 |
| diversity of bacterial endosymbionts associated with macrosteles leafhoppers vectoring phytopathogenic phytoplasmas. | here, we investigate the endosymbiotic microbiota of the macrosteles leafhoppers m. striifrons and m. sexnotatus, known as vectors of phytopathogenic phytoplasmas. pcr, cloning, sequencing, and phylogenetic analyses of bacterial 16s rrna genes identified two obligate endosymbionts, "candidatus sulcia muelleri" and "candidatus nasuia deltocephalinicola," and five facultative endosymbionts, wolbachia, rickettsia, burkholderia, diplorickettsia, and a novel bacterium belonging to the rickettsiaceae, ... | 2013 | 23770905 |
| spotted fever group rickettsiae in questing ticks, central spain. | 0 | 23763913 | |
| ixodid ticks of traditionally managed cattle in central nigeria: where rhipicephalus (boophilus) microplus does not dare (yet?). | ticks and tick-borne diseases (tbds) undermine cattle fitness and productivity in the whole of sub-saharan africa, including nigeria. the aim of this study was to document the composition of tick species, assessing the burden of infestation, in traditionally managed cattle in an area of central nigeria where acaricides have not been used historically. | 2013 | 23758913 |
| distribution of ixodid ticks on dogs in nuevo león, mexico, and their association with borrelia burgdorferi sensu lato. | this study aimed to document the geographic distribution of ixodes tick species in dogs and the prevalence of borrelia burgdorferi s.l. in adult ticks and blood samples by amplification of the ospa region of the b. burgdorferi genome. the study area included nine localities in nuevo león state. dna amplification was performed on pools of ticks to calculate the maximum likelihood estimation (mle), and the community composition (prevalence, abundance, and intensity of infestation) was recorded. a ... | 2013 | 23749032 |
| prevalence and diversity of bartonella species in commensal rodents and ectoparasites from nigeria, west africa. | bartonellae are fastidious bacteria causing persistent bacteremia in humans and a wide variety of animals. in recent years there is an increasing interest in mammalian bartonelloses in general and in rodent bartonelloses in particular. to date, no studies investigating the presence of bartonella spp. in rodents and ectoparasites from nigeria were carried out. | 2013 | 23738028 |
| seroprevalence and risk factors for rickettsia felis exposure in dogs from southeast queensland and the northern territory, australia. | the recent detection of rickettsia felis dna in dogs in australia suggests that dogs are potential mammalian reservoir hosts for this emerging rickettsia. to date, there is no published report addressing the seroprevalence of r. felis in dogs in australia. | 2013 | 23731951 |
| retrospective study of clinical and hematological aspects associated with dogs naturally infected by hepatozoon canis in ludhiana, punjab, india. | to evaluate clinical and hematological aspects of dogs naturally infected with hepatozoon canis (h. canis) presented at the small animal clinics of guru angad dev veterinary and animal sciences university, ludhiana. | 2013 | 23730562 |
| experimental evidence against transmission of hepatozoon canis by ixodes ricinus. | hepatozoon canis is among the most widespread tick-borne protozoa infecting domestic and wild carnivores. its distribution is related to the occurrence of its major vector, the brown dog tick rhipicephalus sanguineus. however, the role of ixodes ricinus as a vector of h. canis has been hypothesized. in the present study, the development of h. canis was investigated in i. ricinus and r. sanguineus nymphs collected from a naturally infested dog. all i. ricinus ticks examined (n=133) were negative ... | 2013 | 23727151 |
| single genotype of anaplasma phagocytophilum identified from ticks, camargue, france. | 0 | 23697386 | |
| sizes and developmental viability of sequentially oviposited eggs of dog ticks: rhipicephalus sanguineus and haemaphysalis leachi leachi. | sizes and developmental viability of sequentially oviposited eggs of up to 12th day oviposition by dog ticks rhipicephalus sanguineus and haemaphysalis leachi leachi were studied. the mean length and breadth of eggs oviposited on days 1 and 2 were greater (0.45 +/- 0.111 and 0.44 +/- 0.042) than those of subsequent ovipositions. the eclosion periods of eggs laid from 7th to 12th day of oviposition were progressively shorter (17, 16, 14 and 19, 17, 0 days) than those of eggs laid on days 1 and 2 ... | 2012 | 23678637 |
| rickettsia felis in rhipicephalus sanguineus from two distant chilean cities. | rickettsia felis is an emerging agent considered a human threat; although its natural reservoir and agent of transmission is the cat flea, it has been also found in other vectors. r. felis has been identified in chile in cat fleas and in one specimen of rhipicephalus sanguineus collected in the metropolitan region. the objective of this study was to detect the presence of rickettsia spp. in r. sanguineus from dogs of two different and distant geographical areas in chile. | 2013 | 23659352 |
| redescription of cercopithifilaria bainae almeida & vicente, 1984 (spirurida, onchocercidae) from a dog in sardinia, italy. | three species of the genus cercopithifilaria have been morphologically and molecularly characterized in dog populations in southern europe: cercopithifilaria grassii (noè, 1907), cercopithifilaria sp. sensu otranto et al., 2011 (reported as cercopithifilaria sp. i), and cercopithifilaria sp. ii sensu otranto et al., 2012. the adults of cercopithifilaria sp. i have remained unknown until the present study. | 2013 | 23642161 |
| genetic analysis and epidemiology of crimean congo hemorrhagic fever viruses in baluchistan province of pakistan. | pakistan is considered as an endemic country for crimean-congo hemorrhagic fever with numerous outbreaks and sporadic cases reported during the past two decades. majority of cases are reported from baluchistan province with subsequent transmissions to non-endemic regions mainly through infected animals directly or via infested ticks. we hereby describe the molecular investigations of cchf cases reported during 2008 in quetta city of baluchistan province. | 2013 | 23641865 |
| complete mitochondrial genome sequence data provides genetic evidence that the brown dog tick rhipicephalus sanguineus (acari: ixodidae) represents a species complex. | ticks are blood-sucking ectoparasites of great medical and veterinary significance that can transmit bacteria, protozoa, fungi and viruses, and cause a variety of human and animal diseases worldwide. in the present study, we sequenced the complete mitochondrial (mt) genome of rhipicephalus sanguineus from china (rsc) and compared with that of r. sanguineus from usa (rsu). nucleotide sequence difference in the full mt genome was 11.23% between rsc and rsu. for the 13 protein-coding genes, compari ... | 2013 | 23630448 |
| morphological and cytochemical changes in synganglion of rhipicephalus sanguineus (latreille, 1806) (acari: ixodidae) female ticks from exposure of andiroba oil (carapa guianensis). | actually, the most used method to control ticks is synthetic acaricides with neurotoxic action. however, the use of these methods presents inconveniences, such as the contamination of the environment and risks to the host's health due to the residual effects. thus, several studies have been developed aiming to find alternative ways to control these ectoparasites, such as the use of natural compounds with active ingredients, which act controlling some species of plagues in addition to presenting ... | 2013 | 23625505 |
| preferences of different tick species for human hosts in turkey. | the ticks removed from the patients who applied to the hospitals in istanbul and neighboring cities, turkey, with the complaint of tick bite were examined in this study, on account of their species, biological stages, attachment sites on the body, and the age of the affected patients. a total of 16,969 ticks were identified. encountered species were as follows: 33.6 % ixodes spp. immature, 25.3 % hyalomma spp. immature, 24.3 % i. ricinus, 9.5 % rhipicephalus sanguineus gr., 3.2 % r. bursa, 2.2 % ... | 2013 | 23620419 |
| histopathology of the tegument of rabbits infested by rhipicephalus sanguineus (acari: ixodidae) ticks and exposed to selamectin (active principle of acaricide revolution, pfizer). | ticks are hematophagous ectoparasites which can transmit several diseases to the host during their feeding process. when ticks mechanically damage the tissue, they eventually induce inflammatory responses on the skin spot where they are fixed. one of the alternatives to control these ectoparasites is the use of chemical substances like selamectin-the active principle of pfizer's antiparasitic revolution-a macrocyclic lactone capable of doing neurotoxic damage to the tick and eventually eliminati ... | 2013 | 23613180 |
| seropositivity rates for agents of canine vector-borne diseases in spain: a multicentre study. | controlling canine vector-borne diseases (cvbd) is a major concern, since some of these diseases are serious zoonoses. this study was designed to determine seropositivity rates in spain for agents causing the following five cvbd: leishmaniosis (leishmania infantum: li), heartworm (dirofilaria immitis: di), ehrlichiosis (ehrlichia canis: ec), anaplasmosis (anaplasma phagocytophilum/anaplasma platys: an) and lyme disease (borrelia burgdorferi: bb). | 2013 | 23607428 |
| simple method to differentiate among rickettsia species. | in this work we present a new option to identify 11 rickettsial species that cause human rickettsioses, with some advantages over the previous methods described. using rickettsial isolates from 11 rickettsia species as a sample, we used the polymerase chain reaction to amplify a 990- to 1,000-bp dna fragment from the ompb gene, common for the 11 rickettsia species analyzed in this study, which were digested with alui restriction enzyme to obtain different digestion patterns. this restriction pat ... | 2013 | 23595041 |
| co-infection with anaplasma platys, bartonella henselae and candidatus mycoplasma haematoparvum in a veterinarian. | during a two year period, a 27-year-old female veterinarian experienced migraine headaches, seizures, including status epilepticus, and other neurological and neurocognitive abnormalities. prior to and during her illness, she had been actively involved in hospital-based work treating domestic animals, primarily cats and dogs, in grenada and ireland and anatomical research requiring the dissection of wild animals (including lions, giraffe, rabbits, mongoose, and other animals), mostly in south af ... | 2013 | 23587235 |
| redescription of hepatozoon felis (apicomplexa: hepatozoidae) based on phylogenetic analysis, tissue and blood form morphology, and possible transplacental transmission. | a hepatozoon parasite was initially reported from a cat in india in 1908 and named leucocytozoon felis domestici. although domestic feline hepatozoonosis has since been recorded from europe, africa, asia and america, its description, classification and pathogenesis have remained vague and the distinction between different species of hepatozoon infecting domestic and wild carnivores has been unclear. the aim of this study was to carry out a survey on domestic feline hepatozoonosis and characteriz ... | 2013 | 23587213 |
| neurotoxic action of permethrin in rhipicephalus sanguineus (latreille, 1806) (acari: ixodidae) female ticks. morphological and cytochemical evaluation of the central nervous system. | studies on the molecular bases of the neurotoxic action of acaricides are found in the literature; but there are no studies of this action on the nervous system of ticks at the cellular level. the present study describes the morphological and cytochemical changes in the synganglion of rhipicephalus sanguineus semi-engorged females exposed to different concentrations of permethrin, a pyrethroid with recognized neurotoxic action. permethrin induced the degeneration of the synganglion through a pro ... | 2013 | 23578999 |
| first survey of hard ticks (acari: ixodidae) on cattle, sheep and goats in boeen zahra and takistan counties, iran. | to carry out the distribution survey of hard ticks of livestock in boeen zahra and takistan counties of qazvin province from april 2010 to september 2010. | 2012 | 23569956 |
| serological investigation of vector-borne disease in dogs from rural areas of china. | to evaluate the anaplasma phagocytophilum (a. phagocytophilum), ehrlichia canis (e. canis), dirofilaria immitis (d. immitis) (canine heartworm), borrelia burgdorferi (b. burgdorferi) infections in countryside dogs from yunnan, hainan and anhui provinces. | 2012 | 23569877 |
| survey of coxiella burnetii in ticks collected from dogs in japan. | for a survey of coxiella burnetii, the q fever agent, ticks infesting companion dogs were collected in aomori, tochigi, gifu and okinawa prefectures, japan. a total of 261 ticks were collected, and their species were identified morphologically. five tick species were identified: ixodes ovatus, haemaphysalis concinna, h. flava, h. longicornis and rhipicephalus sanguineus. total dna was extracted from them individually followed by real-time pcr to detect a c. burnetii-specific gene. the results of ... | 2013 | 23558956 |
| para-clinico-pathological observations of insidious incidence of canine hepatozoonosis from a mongrel dog: a case report. | a rare case of canine hepatozoonosis in a mongrel dog with para-clinico-pathological observations has been reported. the study included detailed haemato-biochemical changes at two stages, i.e. before treatment and after treatment with adopted therapy. before therapy, blood picture revealed normocytic hypochromic anaemia and neutrophilic leucocytosis with variable counts of platelets. thirty-seven percent of neutrophils were found infected with gametocytes of hepatozoon canis. following treatment ... | 2012 | 23543040 |
| molecular survey of hard ticks in endemic areas of tick-borne diseases in china. | over the past several years, there was a substantial increase in the number of cases of known and novel tick-borne infections in humans in china. to better understand the ticks associated with these infections, we collected hard ticks from animals or around livestock shelters in 29 localities in 5 provinces (beijing, henan, hubei, inner mongolia, and zhejiang) where cases of tick-borne illness were reported. we collected 2950 hard ticks representing 7 species of 4 genera (dermacentor sinicus, ha ... | 2013 | 23538111 |
| transstadial transmission of hepatozoon canis from larvae to nymphs of rhipicephalus sanguineus. | hepatozoon canis is an apicomplexan parasite of dogs, which is known to become infected by ingesting rhipicephalus sanguineus adult ticks. to investigate the possibility of h. canis transovarial and transstadial transmission from larvae to nymphs, engorged adult female ticks were collected from a private animal shelter in southern italy, where h. canis infection is highly prevalent. female ticks (n=35) and egg batches were tested by pcr for h. canis. all eggs examined were pcr-negative whereas 8 ... | 2013 | 23537949 |
| molecular investigations of hepatozoon species in dogs and developmental stages of rhipicephalus sanguineus. | the occurrence and distribution of hepatozoon species in stray dogs, and the developmental stages of rhipicephalus sanguineus detached from the same dogs in diyarbakır province, turkey is reported. a total of 328 ticks, including 133 adults (55 males and 75 females consist of 63 partially engorged and 15 fully engorged) and 195 nymphs (91 partially engorged and 104 fully engorged) were detached from the dogs. fully engorged nymphs and females were incubated at 27 °c and relative humidity of 85 % ... | 2013 | 23535887 |
| chemical characterization and acaricide potential of essential oil from aerial parts of tagetes patula l. (asteraceae) against engorged adult females of rhipicephalus sanguineus (latreille, 1806). | rhipicephalus sanguineus, commonly known as the brown dog tick, is one of the most widely distributed species of tick. in dogs, it can cause anemia and provide the transmission of pathogenic microorganisms such as babesia canis, ehrlichia canis, hepatozoon canis, anaplasma platys, and mycoplasma haemocanis. to man, it can transmit the intracellular parasites rickettsia rickettsii and rickettsia conorii, the causative agents of the rocky mountain spotted fever in the americas and mediterranean an ... | 2013 | 23508761 |
| molecular detection and characterization of tick-borne pathogens in dogs and ticks from nigeria. | only limited information is currently available on the prevalence of vector borne and zoonotic pathogens in dogs and ticks in nigeria. the aim of this study was to use molecular techniques to detect and characterize vector borne pathogens in dogs and ticks from nigeria. | 2013 | 23505591 |
| high prevalence of hepatozoon-infection among shepherd dogs in a region considered to be free of rhipicephalus sanguineus. | blood samples and ticks were collected from 100 shepherd dogs, 12 hunting dogs and 14 stray dogs in southern hungary, in order to screen them for the presence of hepatozoon spp. by pcr. out of 126 blood samples, 33 were positive (26%). significantly more shepherd dogs (31%) were infected, than hunting (8%) and stray dogs (7%). three genotypes of hepatozoon canis were identified by sequencing, differing from each other in up to six nucleotides in the amplified portion of their 18s rrna gene. in d ... | 2013 | 23499483 |
| effect of owner-controlled acaricidal treatment on tick infestation and immune response to tick-borne pathogens in naturally infested dogs from eastern austria. | tick-borne infections resulting from regular tick infestation in dogs are a common veterinary health problem all over the world. the application of repellent and acaricidal agents to prevent transmission of pathogens is a major protection strategy and has been proven to be highly effective in several trials under laboratory and natural conditions in dogs. despite such promising results, many dog owners still report tick infestation in their dogs although acaricidal agents are used. information a ... | 2013 | 23497548 |
| detection of rickettsia parkeri from within piura, peru, and the first reported presence of candidatus rickettsia andeanae in the tick rhipicephalus sanguineus. | domestic farm animals (n=145) were sampled for the presence of ectoparasites in northwestern peru during march, 2008. ninety domestic animals (62%) were positive for the presence of an ectoparasite(s) and produced a total collection of the following: 728 ticks [amblyomma maculatum, anocentor nitens, rhipicephalus (boophilus) microplus, rhipicephalus sanguineus, and otobius megnini], 12 lice (haematopinus suis), and 3 fleas (ctenocephalides felis). a rickettsia genus-specific qpcr assay was perfo ... | 2013 | 23488453 |
| tick-borne pathogens and disease in dogs on st. kitts, west indies. | between 2009 and 2011, we conducted a case-control study of ticks and tick-associated pathogens affecting dogs on the island of st. kitts, eastern caribbean, including 55 cases of clinically suspected tick-borne disease (tbd) and 110 presumably healthy animals presented for elective surgeries. rhipicephalus sanguineus caused year-round infestations of dogs, and 36% of the dogs in the study were infested at the time of examination. overall, 62% of suspected tbd cases and 24% of presumably healthy ... | 2013 | 23481028 |
| ticks on birds in a savanna (cerrado) reserve on the outskirts of uberlândia, minas gerais, brazil. | we report tick infestations on birds, in the environment and on domestic animals in a non-forested phytophysiognomy, the savanna-like cerrado sensu stricto, in a natural reserve on the outskirts of the urban area of uberlândia, minas gerais, brazil. overall, 238 birds within 50 species, 15 families and six orders were caught. passeriformes were the most numerous, with 216 birds (90.75%), among which 22 had ticks (n = 31). within this order, the prevalence of tick infestation was 10.2%, and the a ... | 2013 | 23471429 |
| feeding effects of rhipicephalus sanguineus (latreille, 1806) (acari: ixodidae), on protein consumption and blood loss of their hosts. | host blood loss by rhipicephalus sanguineus feedings (weight/tick) ranged from 0.0179 to 0.2469 mg (0.21686 +/- 0.26785) and from 0.00103 to 0.00159 gm (0.001274 +/- 0.000204) respectively for each female and male if fed once. results obtained herein indicated that if each sheep and or goat in production in egypt is infested with only one pair of r. sanguines, the blood loss would reach 1084.3 kg and 867.4 kg, respectively for the population of sheep and goats. accordingly, there was a great los ... | 2012 | 23469645 |
| clustered cases of rickettsia sibirica mongolitimonae infection, france. | 0 | 23460995 | |
| questionnaire-based survey on distribution and clinical incidence of canine babesiosis in france. | the causative agent of canine babesiosis is the protozoan babesia canis, transmitted by the tick dermacentor reticulatus within france. while the parasite can be found everywhere in france however cases of infection are associated with distinct geographical foci. the aim of the study was to evaluate the clinical occurrence of canine babesiosis diagnosed in veterinary clinics in order to propose an updated map of the disease distribution in france. | 2013 | 23448544 |
| ticks of poland. review of contemporary issues and latest research. | the paper presents current knowledge of ticks occurring in poland, their medical importance, and a review of recent studies implemented in the polish research centres on ticks and their significance in the epidemiology of transmissible diseases. in the polish fauna there are 19 species of ticks (ixodida) recognized as existing permanently in our country: argas reflexus, argas polonicus, carios vespertilionis, ixodes trianguliceps, ixodes arboricola, ixodes crenulatus, ixodes hexagonus, ixodes li ... | 2012 | 23444797 |
| mediterranean spotted fever--classification by disease course and criteria for determining the disease severity. | mediterranean spotted fever (msf) in bulgaria is caused by ricketsia conorii conorii with a major vector the dog tick, rhipicephalus sanguineus. the first cases of re-emerging msf were reported in this country in the early 1990s after some 20 years of absence and then registered an annual increase until 2001-2003 after which the disease prevalence declined. msf still poses a serious health problem in the country as severe, complicated cases with lethal outcome occur. the aim of this paper was to ... | 2014 | 23441470 |
| molecular evidence of ehrlichia canis and rickettsia massiliae in ixodid ticks of carnivores from south hungary. | to monitor the emergence of thermophilic, mediterranean ixodid tick species and tick-borne pathogens in southern hungary, 348 ticks were collected from shepherd dogs, red foxes and golden jackals during the summer of 2011. golden jackals shared tick species with both the dog and the red fox in the region. dermacentor nymphs were collected exclusively from dogs, and the sequence identification of these ticks indicated that dogs are preferred hosts of both d. reticulatus and d. marginatus nymphs, ... | 2013 | 23439290 |
| bartonella species in dogs and their ectoparasites from khon kaen province, thailand. | in order to access the prevalence of bartonella species in dogs, whole blood and any associated ectoparasites were collected from 164 dogs with owners in 25 villages throughout khon kaen province. dna was extracted from dog blood, 92 ticks (rhipicephalus sanguineus) and 137 fleas (ctenocephalides spp) and screened by pcr using intergenic spacer region and citrate synthase gene primers. b. clarridgeiae dna was detected in blood of 3 dogs, 4 c. felis and 1 c. canis; b. rochalimae dna was found in ... | 2012 | 23431825 |
| molecular evidence for bacterial and protozoan pathogens in hard ticks from romania. | the aim of the present study was to provide a preliminary insight into the diversity of tick-borne pathogens circulating at the domestic host-tick interface in romania. for this, feeding and questing ticks were analyzed by real-time polymerase chain reaction (pcr) for the presence of anaplasma phagocytophilum, anaplasma platys, ehrlichia canis, borrelia burgdorferi sensu latu, and by pcr and subsequent sequencing for rickettsia spp., babesia spp. and theileria spp. a total of 382 ticks, encompas ... | 2013 | 23428204 |
| prevalence of francisella tularensis and francisella-like endosymbionts in the tick population of hungary and the genetic variability of francisella-like agents. | several new taxa belonging to the genus francisella have been described recently. the present study describes the prevalence of francisella tularensis and francisella-like endosymbionts (fle) in ticks collected from hungary from 2007 to 2009 and characterizes the genetic variability of fles. a total of 5402 ixodid ticks (ixodes ricinus, i. acuminatus, dermacentor marginatus, d. reticulatus, haemaphysalis inermis, h. concinna, h. punctata) were collected from vegetation and animal hosts and teste ... | 2013 | 23421891 |
| systematics and ecology of the brown dog tick, rhipicephalus sanguineus. | rhipicephalus sanguineus, the brown dog tick, kennel tick, or pan-tropical dog tick, is probably the most widespread ixodid tick, colonising both human and canine dwellings. it is of great significance in both human and veterinary medicine as a vector of several important pathogens and can also cause clinical illness in heavy infestations of dogs. however, there are still significant taxonomic uncertainties, and it is probable that some records of this tick refer to other species. most past revi ... | 2013 | 23415851 |
| coxiella burnetii in humans, domestic ruminants, and ticks in rural western kenya. | we conducted serological surveys for coxiella burnetii in archived sera from patients that visited a rural clinic in western kenya from 2007 to 2008 and in cattle, sheep, and goats from the same area in 2009. we also conducted serological and polymerase chain reaction-based surveillance for the pathogen in 2009-2010, in human patients with acute lower respiratory illness, in ruminants following parturition, and in ticks collected from ruminants and domestic dogs. antibodies against c. burnetii w ... | 2013 | 23382156 |
| [investigation of ticks parasitizing on bodies of dogs in shanghai]. | to investigate the ticks which parasitize on the bodies of dogs in shanghai. | 2012 | 23373258 |
| hard ticks (acari, ixodidae) of croatia. | the present paper is based on original and literature data. in croatia the first studies on the occurrence of ixodid species were made about 80 years ago. the number of tick species recorded in croatia considerably increased during the 1950s, 60s, 70s and 80s of the past century. a total of 21 species of hard tick belonging to 5 genera have been recorded in croatia. ixodes is the best represented genus, with seven species recorded. haemaphysalis is represented by six species, followed by rhipice ... | 2012 | 23372407 |
| the effects of ingested mammalian blood factors on vector arthropod immunity and physiology. | the blood feeding behavior of disease-transmitting arthropods creates a unique intersection between vertebrate and invertebrate physiology. here, we review host blood-derived factors that persist through blood digestion to affect the lifespan, reproduction, and immune responses of some of the most common arthropod vectors of human disease. | 2013 | 23370408 |
| parasitism by ixodiphagus wasps (hymenoptera: encyrtidae) in rhipicephalus sanguineus and amblyomma ticks (acari: ixodidae) in three regions of brazil. | hymenopteran parasitoids have been shown to be of potential value in tick biocontrol. tick parasitoids has been reported only once in brazil, over 95 yr ago when ixodiphagus hookeri (howard) was reported parasitizing rhipicephalus sanguineus (latreille) nymphs in rio de janeiro. herein, we report the occurrence of ixodiphagus spp. in ticks from three different regions of brazil. in the state of maranhão, in northeastern brazil, parasitoids were detected in r. sanguineus nymphs on three occasions ... | 2012 | 23356061 |
| study on cheliceral sensilla of the brown dog tick rhipicephalus sanguineus (latreille, 1806) (acari: ixodidae) involved in taste perception of phagostimulants. | phagostimulants are chemical compounds that stimulate feeding. some tick species are known to have pores in their inner cheliceral digits, called pit sensillum (ps), which are involved in taste perception. this study investigated the existence of ps in chelicerae of rhipicephalus sanguineus ticks by scanning electron microscopy (sem) and their involvement in the perception of phagostimulatory substances, such as the salts potassium chloride and sodium chloride (kcl and nacl), sugars (glucose, su ... | 2013 | 23352572 |
| ectoparasites of sheep in three agro-ecological zones in central oromia, ethiopia. | a cross-sectional study was conducted to determine the prevalence and risk factors for ectoparasites infestation in sheep in three agro-ecological zones in central oromia, ethiopia, from october 2009 to april 2010. the study revealed that 637 (48.1%) of the 1325 sheep examined were infested with one or more ectoparasites. the ectoparasites identified were bovicola ovis (27.2%), melophagus ovinus (16.4%), ctenocephalides sp. (2.3%), linognathus africanus (1.2%), linognathus ovillus (0.3%), sarcop ... | 2012 | 23327319 |
| vector-borne helminths of dogs and humans in europe. | presently, 45% of the total human population of europe, as well as their domestic and companion animals, are exposed to the risk of vector-borne helminths (vbh) causing diseases. a plethora of intrinsic biological and extrinsic factors affect the relationship among helminths, vectors and animal hosts, in a constantly changing environment. although canine dirofilarioses by dirofilaria immitis and dirofilaria repens are key examples of the success of vbh spreading into non-endemic areas, another e ... | 2013 | 23324440 |