| seasonal variation of hepatozoon spp. (apicomplexa, hepatozoidae) parasitemia from boa constrictor amarali (serpentes, boidae) and hydrodynastes gigas (serpentes, colubridae). | the aim of this study was to evaluate the parasitemia variation of three hepatozoon species in brazilian snakes. this study was conducted between 2001 and 2003 and included hepatozoon terzii from boa constrictor amarali, and hepatozoon migonei and hepatozoon cyclagrasi from hydrodynastes gigas. it was observed that the parasitemia tended to decrease in all three hepatozoon species but the parasites were not eliminated. this data suggest that hepatozoon infection may be similar to toxoplasma gond ... | 2005 | 15999279 |
| diagnosis of hepatozoon spp. in amblyomma ovale and its experimental transmission in domestic dogs in brazil. | transmission of hepatozoon spp. to dogs was investigated using four species of ixodid ticks: rhipicephalus sanguineus, amblyomma aureolatum, amblyomma ovale and amblyomma cajennense. we collected completely or partially engorged adult ticks of these species from dogs that were naturally infested and positive for hepatozoon spp. we selected some of these ixodids and inoculated them orally in four negative dogs. the other ticks were dissected and examined for oocysts. of all dogs inoculated orally ... | 2005 | 16081219 |
| a parasitological, molecular and serological survey of hepatozoon canis infection in dogs around the aegean coast of turkey. | canine hepatozoonosis is caused by the tick-borne protozoon hepatozoon spp. the prevalence of the infection in the aegean coast of turkey was investigated by examination of blood smear parasitology and polymerase chain reaction (pcr) using blood samples from 349 dogs collected from central aydin, kusadasi, selcuk, central manisa, bodrum and marmaris within the aegean coast of turkey. the indirect fluorescent antibody test (ifat) for the detection of hepatozoon canis antibodies was also used to d ... | 2006 | 16229952 |
| further observations on the blood parasites of birds in uganda. | birds from three national parks (bwindi impenetrable, kibale, and queen elizabeth) in western uganda were surveyed during the dry season in july 2003 and investigated for hematozoa by microscopic examination of stained blood films. of 307 birds examined, representing 68 species of 15 families and four orders, 61.9% were found to be infected with blood parasites. species of haemoproteus (15.3% prevalence), plasmodium (20.5%), leucocytozoon (40.1%), trypanosoma (11.4%), hepatozoon (2.6%), atoxopla ... | 2005 | 16244068 |
| experimental infection of adult and juvenile coyotes with domestic dog and wild coyote isolates of hepatozoon americanum (apicomplexa: adeleorina). | each of five adult and four juvenile coyotes (canis latrans) was exposed to an oral dose of 50 hepatozoon americanum oocysts recovered from amblyomma maculatum ticks that previously fed on either naturally infected domestic dogs (canis familiaris) or naturally infected wild coyotes. all coyotes exposed to h. americanum became infected, regardless of isolate source, and all exhibited mild to moderate clinical disease that simulated american canine hepatozoonosis in naturally infected dogs. at 100 ... | 2005 | 16244069 |
| detection of babesia canis rossi, b. canis vogeli, and hepatozoon canis in dogs in a village of eastern sudan by using a screening pcr and sequencing methodologies. | babesia and hepatozoon infections of dogs in a village of eastern sudan were analyzed by using a single pcr and sequencing. among 78 dogs, 5 were infected with babesia canis rossi and 2 others were infected with b. canis vogeli. thirty-three dogs were positive for hepatozoon. hepatozoon canis was detected by sequence analysis. | 2005 | 16275954 |
| characterization of stages of hepatozoon americanum and of parasitized canine host cells. | american canine hepatozoonosis is caused by hepatozoon americanum, a protozoan parasite, the definitive host of which is the tick, amblyomma maculatum. infection of the dog follows ingestion of ticks that harbor sporulated h. americanum oocysts. following penetration of the intestinal mucosa, sporozoites are disseminated systemically and give rise to extensive asexual multiplication in cells located predominantly in striated muscle. the parasitized canine cells in "onion skin" cysts and in granu ... | 2005 | 16301575 |
| haemogregarine parasites (apicomplexa: hepatozoidae) in caiman crocodilus yacare (crocodilia: alligatoridae) from pantanal, corumbá, ms, brazil. | haemogregarines were recorded in caimans caiman crocodilus yacare from pantanal. this study was carried out in seasonal ponds at the miranda- abobral subregion of pantanal, state of mato grosso do sul, western brazil, from 1998 to 1999. smears from 28 caimans were examined and 20 (71.4%) presented infection by a haemogregarine. infections were observed in 11 males and 9 females. morphological and morphometric observations suggest that the parasite forms found in this work are hepatozoon caimani. | 2005 | 16445875 |
| molecular characterization of feline hepatozoon species from brazil. | feline hepatozoon species from brazil was molecular identified and characterized for the first time in são paulo state, brazil. partial sequences of the 18s rrna gene from the hepatozoon from three naturally infected cats were analyzed. sequences revealed that feline hepatozoon was closely related to the canine hepatozoon canis from brazil. | 2006 | 16448756 |
| culex neavei theobald, as a possible transmitter of hepatozoon matruhensis to the egyptian snake psammophis schokari. | stained smears of culex neavei females infected with hepattozoon matruhensis from psammophis schokari and kept at 20 +/- 1 degrees c showed the complete developmental stages of the parasite. however, no detection of sporozoites was monitored when females were kept at 30 +/- 1 degrees c. a successful infection of p. schokari was carried out in the laboratory by c. neavei bites. the effect of infection on the mosquito longevity was insignificant (p>0.05) under low temperature and highly significan ... | 2006 | 16605095 |
| laboratory studies on the possibility of culex (culex) pipiens l. to harbour and transmit hepatozoon matruhensis to the egyptian snake psammophis schokari. | a successful experimental infection of psammophis schokari snake with hepatozoon matruhensis through culex (culex) pipiens bites was carried out under laboratory condition of 20 +/- 1 degrees c and 60-70 % r.h. the period monitored for gametocyte maturation ranged from 38 to 42 days while the recorded prepatent period ranged from 28 to 35 days. the effect of infection was nonsignificant on longevity, incubation period and percenttage of egg hatching (p>0.05). meanwhile a significant increase (p< ... | 2006 | 16605113 |
| studies on some biological aspects of culex pipiens and culex quinquefasciatus (diptera: culicidae) infected with hepatozoon sp. harboured by the saudian lizard uromastyx microlepis. | laboratory observations revealed that both c. pipiens and c. quinquefasciatus could harbour the parasitic hepatozoon, while only cx. pipiens succeeded to induce infection to the recipient lizard uromastyx microlepis. a significant reduction in egg production together with a significant increase in the pre-oviposition period of c. pipiens was recorded. incubation period and percentage of egg hatching showed no significant changes. infection had no effect on the reproductive fitness of c. quinquef ... | 2006 | 16605114 |
| phylogenetic analysis of coccidian parasites from invertebrates: search for missing links. | apicomplexan parasites represent one of the most important groups of parasitic unicellular eukaryotes comprising such important human parasites such as plasmodium spp. and toxoplasma gondii. apicomplexan radiation as well as their adaptation to the parasitic style of life took place before the era of vertebrates. thus, invertebrates were the first hosts of apicomplexan parasites that switched to vertebrates later in evolution. despite this fact, apicomplexan parasites of invertebrates, with the ... | 2006 | 16621694 |
| new molecular data on mammalian hepatozoon species (apicomplexa: adeleorina) from brazil and spain. | molecular techniques were used to examine the phylogenetic relationships among hepatozoon species isolated from 13 foxes and 15 opossums from brazil, and from 15 dogs, 20 foxes, 45 rodents, and 330 domestic cats from spain. hemogregarine infection was confirmed by amplification of the 18s rrna gene and later sequencing. no hemogregarine infections were found in opossums. the prevalence of hepatozoon in canids ranged from 26.6% (symptomatic domestic dogs) to 90% (spanish foxes). four different h. ... | 2006 | 16629322 |
| prevalence of blood parasites in different local populations of reed warbler (acrocephalus scirpaceus) and great reed warbler (acrocephalus arundinaceus). | blood parasite prevalence in two related warbler species (acrocephalus arundinaceus and a. scirpaceus) was studied at three bulgarian sites that differed mainly in altitude and weather. the prevalence of haemoproteus, the most common parasite genus, was significantly lower at the highest altitude site (730 m above sea level, asl). such a pattern was not found in ectoparasite-transmitted hepatozoon. this can be explained with worsening conditions for the development of free-flying vectors with al ... | 2006 | 16670881 |
| morphological and molecular characteristics of a species of hepatozoon miller, 1908 (apicomplexa: adeleorina) from the blood of isoodon obesulus (marsupialia: peramelidae) in western australia. | examination of blood films as part of a study to assess the health status of the southern brown bandicoot isoodon obesulus (shaw) in western australia revealed the gamonts of a haemogregarine parasite in some samples, the first to be recognised in a bandicoot in this state. light microscope morphological characteristics and partial sequence of the 18s rrna gene were used to describe these organisms. morphological characters did not differentiate the organism in the current study from previously ... | 2006 | 16758303 |
| the flea, megabothris abantis: an invertebrate host of hepatozoon sp. and a likely definitive host in hepatozoon infections of the montane vole, microtus montanus. | in searching for an invertebrate host for hepatozoon sp. infecting the montane vole (microtus montanus), we collected fleas, ticks, and mites from live-trapped voles and searched squash preparations for hepatozoon oocysts. from 1989 through 1996, we identified six species of fleas in grand teton national park: megabothris abantis, megabothris asio megacolpus, aetheca wagneri, peromyscopsylla selenis, peromyscopsylla. hesperomys, and hystrichopsylla dippiei dippiei. we found hepatozoon oocysts on ... | 2006 | 16870862 |
| hepatozoon kabeenin. sp. (protozoa: apicomplexa; hemogregarina) from the sedge warbler, acrocephalus schoenobaenus (aves: passeriformes). | new species, hepatozoon kabeeni was described in blood of sedge warbler acrocephalus schoenobaenus. the parasite species was detected in two populations of sedge warbler in ne and sw parts of poland. hepatozoon kabeeni was found respectively in 36.0% (n=25) and 28.6% (n=28) of individuals. | 2000 | 16886333 |
| hepatozoon species infection in wild red squirrels (sciurus vulgaris) on the isle of wight. | postmortem examinations of 49 red squirrels (sciurus vulgaris) found dead on the isle of wight revealed the presence of a hepatozoon species in 18 of them (37 per cent). the prevalence of infection was highest in subadult animals and no juveniles were infected. the prevalence was higher in the squirrels dying from natural causes (nine of 12) than in squirrels killed in road accidents (seven of 27). the weight of infection varied, and there were heavy infections in squirrels dying from toxoplasmo ... | 2006 | 16905733 |
| morphological and morphometrical characterization of gametocytes of hepatozoon procyonis richards, 1961 (protista, apicomplexa) from a brazilian wild procionid nasua nasua and procyon cancrivorus (carnivora, procyonidae). | the species hepatozoon procyonis richards, 1961 was described in procyon lotor in the usa and then in other reports in the usa, while in panama h. procyonis has been described in procyon cancrivorus. the objective of this paper is to report the occurrence of this species in the brazilian procionids p. cancrivorus and nasua nausa and to describe the morphology and morphometrics of the gametocytes. the analysis was based on blood smears, stained with giemsa, which were examined under a photonic mi ... | 2007 | 16941187 |
| hepatozoonosis in two species of japanese wild cat. | hepatozoon sp. infections were detected in two species of japanese wild cat, iriomote wild cat (felis iriomotensis) and tsushima leopard cat (felis bengalensis euptilura), between april 1993 and october 2005. the prevalence was 56.7% (17/30) and 14.3% (6/42), respectively. the most affected organ was the heart; all infected animals had organisms in their hearts. the parasitizing form was schizont and various developmental stages were observed. the size of schizont and merozoite was 22.3 +/- 3.1 ... | 2006 | 16953084 |
| mhc class i variation associates with parasite resistance and longevity in tropical pythons. | using restriction fragment length polymorphism (rflp) we identified 26 unique major histocompatibility complex (mhc) genotypes in 104 water pythons. we observed a significant independent association between reduced blood parasite load (hepatozoon sp.) and python body length/age, presence of a specific rflp fragment (c-fragment) and the overall number of fragments. the parasite has a negative impact on several python life-history traits such as growth, nutritional status and longevity. thus, the ... | 2006 | 17040395 |
| new advances in molecular epizootiology of canine hematic protozoa from venezuela, thailand and spain. | the prevalence of hematozoan infections (hepatozoon canis and babesia sp., particularly babesia canis vogeli) in canids from venezuela, thailand and spain was studied by amplification and sequencing of the 18s rrna gene. h. canis infections caused simultaneously by two different isolates were confirmed by rflp analysis in samples from all the geographic regions studied. in venezuela, blood samples from 134 dogs were surveyed. babesia infections were found in 2.24% of the dogs. comparison of sequ ... | 2007 | 17088022 |
| molecular characterization of hepatozoon sp. from brazilian dogs and its phylogenetic relationship with other hepatozoon spp. | to characterize phylogenetically the species which causes canine hepatozoonosis at two rural areas of rio de janeiro state, brazil, we used universal or hepatozoon spp. primer sets for the 18s ssu rrna coding region. dna extracts were obtained from blood samples of thirteen dogs naturally infected, from four experimentally infected, and from five puppies infected by vertical transmission from a dam, that was experimentally infected. dna of sporozoites of hepatozoon americanum was used as positiv ... | 2007 | 17134837 |
| detection of hepatozoon canis in stray dogs and cats in bangkok, thailand. | a rapidly increasing stray animal population in bangkok has caused concern regarding transmission of vector-borne and zoonotic diseases. the purpose of this study was to determine if stray animals in bangkok are a potential reservoir of hepatozoon, a genus of tick-borne parasites that has received little attention in thailand. blood samples were collected from stray companion animals near monasteries in 42 bangkok metropolitan districts. both dogs and cats were sampled from 26 districts, dogs al ... | 2006 | 17135555 |
| chromatin supraorganization, dna fragmentation, and cell death in erythrocytes of the rattlesnake, crotalus durissus terrificus (serpentes, viperidae), infected with the protozoan, hepatozoon spp. (apicomplexa, hepatozoidae). | forms of the protozoan of the hepatozoon genus are detected free in the circulation and also within some of the erythrocytes of infected snakes. in healthy snakes, dna fragmentation and cell death usually affect a few circulating erythrocytes in agreement with the long life span expected for these cells. in the present study we investigated whether infection by hepatozoon spp. affected the incidence of dna fragmentation and cell death in erythrocytes from the rattlesnake, crotalus durissus terri ... | 2007 | 17208020 |
| molecular characterization of the 18s rdna gene of an avian hepatozoon reveals that it is closely related to lankesterella. | as a part of intensive study of blood parasite infections in a population of the passerine bird blue tit (cyanistes caeruleus, paridae), we detected a parasite species that, based on its morphological similarity, was tentatively identified as hepatozoon parus, the only species of this parasite genus described from birds of this family. however, morphological measurements show that h. parus is slightly larger than the parasite detected in our population. a molecular characterization of the parasi ... | 2006 | 17304816 |
| seasonal influence on hematologic values and hemoglobin electrophoresis in brazilian boa constrictor amarali. | as ectothermic animals, snakes depend exclusively on the environment for proper temperature maintenance, which may greatly influence their activity. twenty-five adult boa constrictor amarali snakes maintained in captivity were used to determine the influence of seasons on their hematologic values and electrophoretic profile of hemoglobin. a complete blood cell count (cbc) and examination for hemoparasites were performed in the summer and winter of 2004. hemoglobin was stored for later electropho ... | 2006 | 17315433 |
| life cycle of hepatozoon canis (apicomplexa: adeleorina: hepatozoidae) in the tick rhipicephalus sanguineus and domestic dog (canis familiaris). | the life cycle of the apicomplexan protozoon hepatozoon canis in its natural hosts rhipicephalus sanguineus (tick) and canis familiaris (domestic dog) was studied in an experimental infection. tick nymphs were fed on a naturally infected dog, or they were infected by percutaneous injection of blood. dogs were inoculated by ingestion of adult ticks containing mature oocysts. gamonts were in syzygy 24 hr after percutaneous injection of ticks. early oocysts were detected 96 hr after nymph repletion ... | 2007 | 17539411 |
| molecular detection of a hepatozoon species in stray cats from a feline colony in north-eastern spain. | within the framework of a local animal health programme, the presence of ectoparasites and haemoparasites was investigated in a colony of 25 cats in barcelona. diagnosis was performed both by standard parasitological procedures and molecular techniques. all cats were negative to haematozoan infection by microscopic examination of blood smears. however, hepatozoon spp. was found in four cats as shown by amplification and sequencing of the 18s rrna gene. cat isolates were 100% identical to the iso ... | 2008 | 17555996 |
| coinfection with multiple tick-borne and intestinal parasites in a 6-week-old dog. | coinfection with ehrlichia canis, babesia canis, hepatozoon canis, isospora spp., giardia spp., and dipylidium caninum were detected in a 6-week-old dog. the effect of multi-pathogen infection was a fatal combination of gastrointestinal and hematologic abnormalities, including diarrhea, vomiting, anorexia, distended painful abdomen, intussusception, severe thrombocytopenia, anemia, and hypoproteinemia. | 2007 | 17616060 |
| hepatozoon canis infection in slovakia: imported or autochthonous? | tissue samples from nine red foxes (four samples of striated muscle tissue and five samples of heart tissue) that originated from the michalovce district (slovakia), an area with endemic occurrence of canine babesiosis were examined by pcr method using primers amplifying a fragment of the 18s rrna spanning the v4 region of babesia and theileria. an unexpected determination of 450 bp dna fragment of hepatozoon canis was found in four samples. partial sequences of the 18s rrna gene from the h. can ... | 2007 | 17627439 |
| first molecular characterization of canine hepatozoonosis in argentina: evaluation of asymptomatic hepatozoon canis infection in dogs from buenos aires. | canine hepatozoonosis is an expanding tick-borne disease in argentina. hepatozoonosis was studied during 1 year in six dogs from the same household in buenos aires. blood parasitemia with hepatozoon gamonts was found in five dogs and all six were positive by pcr for hepatozoon sp. although the levels of parasitemia fluctuated during the year, no clinical signs of disease were detected during the follow up period. amplification and sequencing of a 650 bases fragment of the 18s rrna gene from all ... | 2007 | 17720320 |
| field survey of rodents for hepatozoon infections in an endemic focus of american canine hepatozoonosis. | eighteen of 31 (58%) cotton rats (sigmodon hispidus) and 8 of 24 (33.3%) white-footed mice (peromyscus leucopus) that were wild-trapped from 4 american canine hepatozoonosis endemic sites in oklahoma were infected with hepatozoon species. the predilection organ for merogony of the hepatozoon species in cotton rats was the liver. meronts were not detected in any of the white-footed mice. a 488 bp dna fragment that includes a variable region of the 18s rrna hepatozoon gene amplified from blood or ... | 2007 | 17942230 |
| development and evaluation of a quantitative pcr assay for detection of hepatozoon sp. | with the aim to improve current molecular diagnostic techniques of hepatozoon sp. in carnivore mammals, we developed a quantitative pcr (qpcr) assay with sybr green i((r)). the method, consisting of amplification of a 235bp fragment of the 18s rrna gene, is able to detect at least 0.1fg of parasite dna. reproducible quantitative results were obtained over a range of 0.1ng-0.1fg of hepatozoon sp. dna. to assess the performance of the qpcr assay, dna samples from dogs (140) and cats (50) were test ... | 2007 | 17983705 |
| experimental transmission of hepatozoon americanum to rodents. | laboratory-raised cotton rats (sigmodon hispidus), outbred white mice (mus musculus), and c57bl/6j-lystbg-j/j mice (m. musculus) that were administered approximately 50 sporulated oocysts of hepatozoon americanum (af176836) by gavage developed inflammatory lesions containing parasitic cystozoites in cardiac and skeletal muscle, kidney, and lung. sprague-dawley rats (rattus norvegicus) similarly exposed showed no evidence of infection. cystozoites were first detected by histopathologic examinatio ... | 2008 | 18055118 |
| vector-borne infections in cats: molecular study in barcelona area (spain). | previous serological surveys have reported the presence of different organisms in cats from spain but little reports exist about the exact identity of these organisms. the purpose of the study reported here was to assess the presence of dna of several vector-borne infections in a population of cats from barcelona area. one hundred blood samples obtained from cats admitted to the uab-vth were entered into the study and classified as healthy (n=48) or unhealthy (n=52). edta-blood samples were assa ... | 2008 | 18079064 |
| prevalence of ehrlichia canis, anaplasma platys, babesia canis vogeli, hepatozoon canis, bartonella vinsonii berkhoffii, and rickettsia spp. in dogs from grenada. | to identify the tick-borne pathogens in dogs from grenada, we conducted a serologic survey for ehrlichia canis in 2004 (104 dogs) and a comprehensive serologic and molecular survey for a variety of tick-borne pathogens in 2006 (73 dogs). in 2004 and 2006, 44 and 32 dogs (42.3% and 43.8%) were seropositive for e. canis, respectively. in 2006, several tick-borne pathogens were identified by serology and pcr. dna of e. canis, anaplasma platys, babesia canis vogeli, hepatozoon canis, and bartonella ... | 2008 | 18160223 |
| a new species of hepatozoon (apicomplexa: adeleorina) from python regius (serpentes: pythonidae) and its experimental transmission by a mosquito vector. | hepatozoon ayorgbor n. sp. is described from specimens of python regius imported from ghana. gametocytes were found in the peripheral blood of 43 of 55 snakes examined. localization of gametocytes was mainly inside the erythrocytes; free gametocytes were found in 15 (34.9%) positive specimens. infections of laboratory-reared culex quinquefasciatus feeding on infected snakes, as well as experimental infection of juvenile python regius by ingestion of infected mosquitoes, were performed to complet ... | 2007 | 18163356 |
| the first report of hepatozoon sp. (apicomplexa: hepatozoidae) in neotropical felids from brazil. | in order to investigate the occurrence of hepatozoon infection in neotropical felids from brazil, blood from the jugular or cephalic vein was taken from 29 non-domestic felids including ocelot (leopardus pardalis), little spotted cat (leopardus tigrinus), margay (leopardus wiedii), and jaguarondi (puma yagouaroundi) from the northeast region of brazil. hepatozoon infection was confirmed by light microscopy and molecular techniques. the results showed five naturally infected felids. partial seque ... | 2008 | 18243562 |
| clinical and hematological signs associated with dogs naturally infected by hepatozoon sp. and with other hematozoa: a retrospective study in uberlândia, minas gerais, brazil. | an evaluation was made of the clinical and hematological aspects of 115 dogs infected naturally by hepatozoon sp. and treated at the hospital school of the faculty of veterinary medicine in uberlândia, mg, brazil. of the 115 dogs for whom peripheral blood films were evaluated, 89 (77.39%) presented parasitemia by hepatozoon sp. solely, while 26 (22.61%) had combination of hepatozoon sp., babesia sp. and ehrlichia sp. young male dogs less than a year old, of undefined breed (ub), were the most co ... | 2008 | 18304739 |
| phylogenetic analysis of hepatozoon species (apicomplexa: adeleorina) infecting frogs of nova scotia, canada, determined by its-1 sequences. | species of hepatozoon are apicomplexan parasites infecting tetrapod vertebrates and hematophagous arthropods. two species, hepatozoon catesbianae and hepatozoon clamatae, have been described inhabiting the erythrocytes of bullfrogs and green frogs. a number of characteristics typically used to distinguish between members of this genus are shared between these 2 species, prompting speculation as to whether or not these organisms are in fact distinct species. to test the species distinction, bullf ... | 2007 | 18314691 |
| hematologic, cytochemical, ultrastructural, and molecular findings of hepatozoon-infected flat-headed cats (prionailurus planiceps). | the flat-headed cat (prionailurus planiceps) is a small wild cat of southeast asia and is considered extremely endangered. little is known about the hematologic values, blood cell morphology, or hemoparasites of this species in relation to other felidae. | 2008 | 18366542 |
| infectivity of hepatozoon americanum cystozoites for a dog. | hepatozoon americanum cystozoites from experimentally infected, laboratory-raised rodents were fed to a hepatozoon-free dog. gamonts were detected by examination of blood smear 42 and 56 days post-exposure. pcr analysis of blood was positive for the 18s rrna hepatozoon gene on days gamonts were demonstrated. meronts were detected histologically in a skeletal muscle biopsy 90 days after ingestion of cystozoites. sequencing confirmed that the parasite in the dog was h. americanum. xenodiagnosis wa ... | 2008 | 18387744 |
| hepatozoon tachyglossi in the short-beaked echidna (tachyglossus aculeatus). | | 2008 | 18454841 |
| molecular detection of tick-borne protozoal and ehrlichial infections in domestic dogs in south africa. | a total of 1,138 blood specimens were collected over a 6-year period (2000-2006) from domestic dogs in south africa. specimens from domestic dogs were obtained from the onderstepoort veterinary academic hospital (ovah) in pretoria, the society for the prevention of cruelty to animals (johannesburg, durban, east london and bloemfontein) and private practices from four provinces (gauteng, mpumalanga, kwazulu-natal and western cape). all specimens were screened for babesia, theileria, hepatozoon an ... | 2008 | 18502588 |
| hepatozoon species of the timber rattlesnake in northern florida:evidence of salivary gland oocysts and a natural cross-familial transmission of an hepatozoon species. | two species of hepatozoon were present in 1 of 8 timber rattlesnakes, crotalus horridus, h. sauritus and h. horridus n.sp. the narrow gamonts of h. sauritus are 15.0-19.0 x 3.5-5.0 microns, with lw 58-86 microns2, and l/w 3.2-4.7, with a narrow, rounded anterior end. the spherical to slightly ovoid oocysts produce ovoid to elongate sporocysts, 21-43 x 12-24 microns, l/w 1.20-2.7, containing on average 22.1 (10-34) sporozoites. this is the first natural cross-familial transmission of an hepatozoo ... | 2008 | 18576724 |
| a pcr-based epidemiological survey of hepatozoon canis in dogs in nigeria. | the prevalence of hepatozoon canis infections in dogs in nigeria was surveyed using molecular methods. dna was extracted from blood samples obtained from 400 dogs. a primer set that amplified the babesia canis 18s rrna gene, which has high similarity to the h. canis 18s rrna gene, was used for the pcr. as a result, samples from 81 dogs (20.3%) produced 757 bp bands, which differed from the 698 bp band that corresponded to b. canis infection. the sequence of the pcr products of 10 samples were de ... | 2008 | 18685252 |
| molecular detection of babesia rossi and hepatozoon sp. in african wild dogs (lycaon pictus) in south africa. | blood specimens from wild dogs (n=301) were obtained from de wildt cheetah and wildlife centre (pretoria) and five game reserves (4 in the north-west province and 1 in limpopo province), south africa. specimens were screened for babesia, theileria, hepatozoon and ehrlichia/anaplasma species using pcr and reverse line blot (rlb) assays. positive results were obtained in 18 (6%) wild dogs. sixteen specimens were found positive for babesia rossi and two dogs were hepatozoon sp. positive. it appears ... | 2008 | 18752897 |
| looks can deceive: molecular identity of an intraerythrocytic apicomplexan parasite in australian gliders. | two yellow-bellied gliders (petaurus australis) had an intraerythrocytic parasite closely related to the cyst-forming coccidia (apicomplexa: sarcocystidae). the parasitaemia persisted for 3 months or more but was observed to clear within 3 years in captivity. the parasite appears not to significantly debilitate its infected host. traditionally, using morphological identification, the intraerythrocytic parasite would have been classified within the hepatozoon species typically found in red blood ... | 2009 | 19028015 |
| [vector-borne parasites of dogs on the islands of cabo verde]. | during an animal welfare campaign on the islands of cape verde (in the capital praia on the island of santiago) a total of 57 dogs were examined for ectoparasites and blood parasites. 84% of the animals were infested with arthropods, mostly ticks. haemotropic parasites were examined via blood smear, polymerase chain reaction (pcr) and/or serology. 23 dogs had single infections, five multiple infections with haemoparasites. in eight dogs ehrlichia canis and in one amaplasma phagocytophilum were d ... | 2008 | 19066773 |
| [arthropod-borne parasites of dogs, especially leishmania, in the kosovo and albania]. | currently no information is available regarding canine arthropod-borne parasites in albania and the kosovo, especially the zoonotic protozoan leishmania infantum. presumably autochtonous cases of human leishmaniosis have been described for some areas (kosovo: ferizaj, gjakovo, pec, malisevo; albania: tirana, durres, elbasan, shkodra, vlore). in order to investigate the infection status of dogs of different origin sera from 272 animals (151 from albania - tirana, kamza and durres; 121 from the ko ... | 2008 | 19066774 |
| canine inflammatory myopathy associated with leishmania infantum infection. | inflammatory myopathy associated with several infectious diseases occurs in dogs including those caused by toxoplasma gondii, neospora caninum, ehrlichia canis and hepatozoon canis. however, muscle disease due to leishmania infection has been poorly documented. the aim of this study was to examine the distribution and types of cellular infiltrates and expression of mhc class i and ii in muscle biopsies obtained from 15 male beagle dogs from a breeder group with an established diagnosis of leishm ... | 2009 | 19084398 |
| atypical clinical presentation of coinfection with ehrlichia, babesia and hepatozoon species in a dog. | | 2009 | 19122221 |
| pcr survey of vectorborne pathogens in dogs living in and around barcelona, an area endemic for leishmaniasis. | blood samples from 153 dogs living in and around barcelona were assayed for leishmania infantum and ehrlichia, anaplasma, rickettsia, bartonella, hepatozoon, babesia and theileria species by pcr amplification of dna, and the amplicons obtained were sequenced. the prevalence of the infectious agents was l infantum (29.4 per cent), ehrlichia and anaplasma species (4.0 per cent), hepatozoon canis (3.3 per cent), babesia canis vogeli (2.0 per cent), babesia gibsoni (2.0 per cent), babesia canis cani ... | 2009 | 19168881 |
| hepatozoonosis in a dog with skeletal involvement and meningoencephalomyelitis. | a 15-month-old, female mongrel dog was presented with a 6-week history of inappetence, weight loss, and tetraparesis. physical examination revealed weakness, poor body condition, mild fever, pale mucous membranes, and diffuse muscle atrophy. the right hind limb was painful and edematous, with large ecchymoses. the femur was irregular on palpation and moderate popliteal lymphadenopathy was evident. results of a cbc showed severe anemia with mild regeneration, an inflammatory leukogram with 90% of ... | 2009 | 19228365 |
| molecular epizootiology of canine hepatozoonosis in croatia. | an epizootiological survey was conducted to investigate the prevalence of hepatozoonosis in a population of 924 apparently asymptomatic dogs from different regions of croatia. dna was isolated from canine blood and screening pcr on the 666 bp fragment of 18s rrna revealed that 108 (11.8%) of dogs were infected. positive samples were confirmed by partial sequencing of the 18s rrna gene. the consensus sequences, derived from various sequence data sets, were compared with sequences of 18s ssrrna of ... | 2009 | 19249302 |
| a molecular survey of piroplasmida and hepatozoon isolated from domestic and wild animals in burgos (northern spain). | this study reports a molecular survey of hepatozoon species and of the order piroplasmida in the province of burgos, northern spain. the diagnostic techniques employed included pcr and the sequencing of the 18s rrna gene. eighty-nine blood samples from domestic animals plus 138 blood/coagulated blood samples from wild mammals were examined. theilerid protozoa were found at relatively high frequencies in bovines (14.6%) and horses (36%). theileria buffeli, t. sergenti and t. annulata were diagnos ... | 2009 | 19297099 |
| detection of a hepatozoon and spotted fever group rickettsia species in the common marsupial tick (ixodes tasmani) collected from wild tasmanian devils (sarcophilus harrisii), tasmania. | tasmanian devils are the largest extant marsupial carnivores, confined to the australian island state of tasmania. the iconic marsupial has dramatically declined in number since the discovery of devil facial tumor disease in 1996 and efforts are being made to uncover vital information to assist in the long-term survival of the species. ticks are the main vectors of arthropod-borne disease in animals, raising the question of whether tasmanian devils may be host to arthropods capable of harboring ... | 2009 | 19303711 |
| development of multiplex polymerase chain reaction for detection of ehrlichia canis, babesia spp and hepatozoon canis in canine blood. | a multiplex polymerase chain reaction (pcr) has been developed for simultaneous detection of canine blood parasites, ehrlichia canis, babesia spp and hepatozoon canis, from blood samples in a single reaction. the multiplex pcr primers were specific to e. canis virb9, babesia spp 16s rrna and h. canis 16s rrna genes. specificity of the amplicons was confirmed by dna sequencing. the assay was evaluated using normal canine and infected blood samples, which were detected by microscopic examination. ... | 2009 | 19323031 |
| detection of the dna of borrelia afzelii, anaplasma phagocytophilum and babesia canis in blood samples from dogs in warsaw. | each month, from march 2003 to february 2004, 34 blood samples from dogs were randomly selected from the blood samples delivered to two veterinary laboratories in warsaw and tested for the dna of borrelia burgdorferi sensu lato, anaplasma phagocytophilum, babesia canis and hepatozoon canis. borrelia dna was detected in seven of the 408 dogs, a phagocytophilum dna was found in two, and b canis dna was found in 48 (11.8 per cent). the dna of h canis was not found in any of the blood samples. seque ... | 2009 | 19363228 |
| new developments in canine hepatozoonosis in north america: a review. | abstract : canine hepatozoonosis is caused by hepatozoon canis and hepatozoon americanum, apicomplexan parasites transmitted to dogs by ingestion of infectious stages. although the two agents are phylogenetically related, specific aspects, including characteristics of clinical disease and the natural history of the parasites themselves, differ between the two species. until recently, h. canis infections had not been clearly documented in north america, and autochthonous infection with h. america ... | 2009 | 19426444 |
| parasitological and molecular features of the hepatozoon species in the myocardium of japanese martens (martes melampus melampus). | the hepatozoon species in the myocardium of japanese martens (martes melampus melampus) was characterized by histological and molecular methods. histologically, granulomatous nodules with hepatozoon sp. merozoites/gametocytes, or schizonts, or both were observed in the hearts of japanese martens. the most frequently observed forms were merozoites/gametocytes within phagocytes; each host cell included a zoite, which was not microscopically identifiable as a merozoite or gametocyte. schizonts were ... | 2009 | 19575543 |
| light and transmission electron microscopic characteristics of a novel hepatozoon spp. in naturally infected cotton rats (sigmodon hispidus). | a novel species of hepatozoon was recently reported in cotton rats (sigmodon hispidus) collected from an area of oklahoma where american canine hepatozoonosis is endemic. in this study, the various stages of merogony of the parasite were characterized by light and electron microscopy. meronts occurred within parasitophorous vacuoles in hepatocytes and ranged from mononucleated spherical forms to large, mature forms in vacuoles that contained approximately 50 peripherally arranged merozoites. dev ... | 2009 | 19629526 |
| three new hepatozoon species (apicomplexa: hepatozoidae) infecting the florida kingsnake, lampropeltis getula floridana. | the florida kingsnake, lampropeltis getula floridana, is host to 3 species of hepatozoon at the type locality, miramar, broward county, florida, and 2, possibly all 3, species at cedar key, levy county, approximately 480 km to the northwest. hepatozoon eurytopis, n. sp. was present also in diadophis punctatus and elaphe guttata in jupiter farms, palm beach county, and in thamnophis sirtalis at gainesville, alachua county. specific identity in d. punctatus was determined from gamont morphology an ... | 2010 | 19685939 |
| ticks and haemoparasites of dogs from praia, cape verde. | in february 2008 an epidemiological field study on arthropod-borne infections in dogs was carried out in praia, the capital city of cape verde. for this purpose 130 dogs were included in the study. of these, 94.6% were infested with ticks. altogether, 1293 ticks of the genus rhipicephalus (in all evaluated cases r. sanguineus) were collected. examination for haemotropic parasites was performed via polymerase chain reaction (pcr). lymph node fine-needle aspirates were screened by pcr for leishman ... | 2009 | 19729247 |
| detection of babesia canis subspecies and other arthropod-borne diseases in dogs from tirana, albania. | summary. the importance of arthropod-borne diseases increased in the recent past in particular due to frequent travel with dogs in or by importing of dogs from regions with endemic occurrence of these diseases. while the epidemiological situation is well known for the western parts of the mediterranean, only limited data is available for eastern europe and the balkans. thirty clinically healthy dogs from suburban areas of tirana, albania, were tested for babesia canis, hepatozoon spp., leishmani ... | 2009 | 19915816 |
| a case report: a dog with acute onset of hepatozoon canis infection. | we present a clinical overview of a dog with acute onset of hepatozoon canis infection. a stray female beagle dog of unknown age was referred to kagoshima university showing anemia. blood tests revealed the presence of anemia, thrombocytopenia, hyperproteinemia, polyclonal gammopathy, hypoalbuminemia, and elevated creatine kinase and alkaline phosphatase activities. in addition, capsule-like organisms were detected in the cytoplasm of approximately 50% of neutrophils in blood smears. h. canis in ... | 2009 | 19578300 |
| experimental transmission of hepatozoon americanum to new zealand white rabbits (oryctolagus cuniculus) and infectivity of cystozoites for a dog. | inflammatory lesions containing parasitic cystozoites developed in multiple organs and tissues of laboratory-raised oryctolagus cuniculus that were administered approximately 100 sporulated oocysts of hepatozoon americanum (oklahoma isolate, genbank accession af176836) orally. the predominantly granulomatous inflammatory lesions were detected histologically 8 weeks after exposure to oocysts. cystozoites, recognized by cresent-shaped, uninucleated bodies surrounded by an accumulation of globular, ... | 2009 | 19559533 |
| acquisition and transmission of hepatozoon canis (apicomplexa: hepatozoidae) by the tick amblyomma ovale (acari: ixodidae). | the present study aimed to evaluate under controlled conditions the acquisition of hepatozoon canis by amblyomma ovale after feeding on infected dogs, and the subsequent induction of infection in uninfected dogs that ingested the experimentally infected ticks. two h. canis naturally infected dogs were infested with a. ovale adult ticks derived from an uninfected laboratory tick colony. after feeding, two a. ovale females presented h. canis oocysts in the hemolymph at the first and fourth days af ... | 2009 | 19501969 |
| hepatozoon canis infecting dogs in the state of espírito santo, southeastern brazil. | from may 2007 to march 2008, blood samples were collected from 92 healthy dogs living in 21 households (17 farms in rural area, and 4 homes in urban area) in 6 counties of the state of espírito santo, southeastern brazil. in addition, ticks were collected from these dogs. a mean of 4.4+/-3.0 dogs (range: 1-12) were sampled per household; 78 and 14 dogs were from rural and urban areas, respectively. polymerase chain reaction (pcr) designed to amplify fragments of the 18s rdna gene of babesia spp ... | 2009 | 19482427 |
| prevalence and seasonality of tick-borne pathogens in questing ixodes ricinus ticks from luxembourg. | in europe, ixodid ticks are important arthropod vectors of human and animal pathogens, but comprehensive studies of the prevalence of all relevant pathogens in central europe are scarce. as a result of ecological changes, the incidences of tick-borne infections are expected to increase. in this study, 1,394 nymphal and adult ixodes ricinus ticks sampled monthly during the active season from 33 ecologically distinct collection sites throughout luxembourg were screened for all human tick-borne pat ... | 2010 | 20228110 |
| relationships between leukocytes and hepatozoon spp. in green frogs, rana clamitans. | there are few published data on amphibian leukocyte profiles, and relationships between amphibian leukocytes and parasites are even less well known. using counts from 35 pairs of blood smears taken 2 days apart, we tested for correlations between leukocyte proportions and infection intensities of hepatozoon spp. (either hepatozoon catesbianae or hepatozoon clamatae) in green frogs (rana clamitans). on average (se), we counted 65.4 (1.7) lymphocytes, 14.0 (1.3) neutrophils, 19.3 (1.6) eosinophils ... | 2009 | 19204336 |
| a sarcocystid misidentified as hepatozoon didelphydis: molecular data from a parasitic infection in the blood of the southern mouse opossum (thylamys elegans) from chile. | the blood of 21 adult south american mouse opossums (thylamys elegans) captured from april through august of 2005 in central chile was examined for parasites. light microscopic analysis of blood smears initially suggested that a highly pleomorphic hepatozoon species typical of american opossums was infecting erythrocytes. unexpectedly, amplification by pcr and sequencing of a dna fragment of the small subunit rdna combined with phylogenetic analyses indicated that the parasite is not a member of ... | 2008 | 19120800 |
| canine babesiosis in northern portugal and molecular characterization of vector-borne co-infections. | abstract: | 2010 | 20377861 |
| imported and travelling dogs as carriers of canine vector-borne pathogens in germany. | abstract: | 2010 | 20377872 |
| hemoprotozoa of domestic animals in france: prevalence and molecular characterization. | very limited information is available on epizootiology of haematozoan infections in french domestic animals. in an attempt to address this issue, prevalence of piroplasmida was studied in carnivores and ruminants, whereas prevalence of hepatozoon spp. was only investigated in carnivores. in total, 383 animals were included in the survey (namely 116 cats, 108 dogs, 91 sheep and 68 cows). parasite diagnosis was carried out using molecular methods such as pcr and sequencing of the 18s rrna gene. in ... | 2009 | 19013719 |
| diagnosis of canine hepatozoon spp. infection by quantitative pcr. | hepatozoon (h.) americanum and h. canis are the etiological agents of canine hepatozoonosis, a disease that is found worldwide and is also prevalent in the southeastern united states. current laboratory diagnosis of canine hepatozoonosis caused by h. americanum is usually dependent on visual identification of hepatozoon "onion skin cysts" in muscle biopsies, an approach that requires invasive sampling and can result in false negatives. we have developed a diagnostic method for detection of hepat ... | 2008 | 18774228 |
| blood parasites of mound-building mouse, mus spicilegus petényi, 1882 (mammalia, rodentia). | mound-building mice, mus spicilegus, were studied for the blood parasites in eastern slovakia, vicinity kechnec village near kosice town (kosická kotlina basin, 21 degrees 14' e, 48 degrees 33' n) during years 2002-2005. overall, 251 specimens were examined. the parasites were detected using microhematokrit centrifugation technique and on the giemsa's method stained blood smears and light microscopy. the parasites were found in 3.57% of specimens; 1.20% of mice were infected with bartonella sp., ... | 2010 | 20450010 |
| molecular and morphological description of a hepatozoon species in reptiles and their ticks in the northern territory, australia. | ticks, representing 3 species of amblyomma, were collected from the water python (liasis fuscus) and 3 additional reptile species in the northern territory, australia, and tested for the presence of hepatozoon sp., the most common blood parasites of snakes. in addition, blood smears were collected from 5 reptiles, including the water python, and examined for the presence of the parasite. hepatozoon sp. dna was detected in all tick and reptile species, with 57.7% of tick samples (n = 187) and 35. ... | 2009 | 18710299 |
| new species of haematozoa from the avian families campephagidae and apodidae. | leucocytozoon coracinae sp. nov. is described from the avian family campephagidae and hepatozoon apodis sp. nov. from the apodidae. the distribution of these parasites within their respective families is discussed. | 2008 | 18642502 |
| rodents as intermediate hosts of hepatozoon ayorgbor (apicomplexa: adeleina: hepatozoidae) from the african ball python, python regius? | two experimental trials were performed to elucidate the role of rodents in the life cycle of hepatozoon species using snakes as intermediate hosts. in one trial, two ball pythons, python regius shaw, 1802 were force fed livers of laboratory mice previously inoculated with sporocysts of hepatozoon ayorgbor sloboda, kamler, bulantová, votýpka et modrý, 2007. transmission was successful in these experimentally infected snakes as evidenced by the appearance of intraerythrocytic gamonts, which persis ... | 2008 | 18578163 |
| molecular detection of ehrlichia canis, anaplasma bovis, anaplasma platys, candidatus midichloria mitochondrii and babesia canis vogeli in ticks from israel. | : ticks are vectors of important pathogens of human and animals. therefore, their microbial carriage capacity is constantly being investigated. the aim of this study was to characterize the diversity of domestic animal pathogens in ticks collected from vegetation and the ground, from different parts of israel. non-engorged questing adult ticks were collected from 13 localities. a total of 1196 ticks in 131 pools-83 pools of rhipicephalus turanicus and 48 of rhipicephalus sanguineus (with two to ... | 2011 | 20636417 |
| hepatozoon species of the timber rattlesnake in northern florida: description of a new species, evidence of salivary gland oocysts, and a natural cross-familial transmission of an hepatozoon species. | two species of hepatozoon, i.e., h. sauritus and h. horridus n. sp., were present in 1 of 8 timber rattlesnakes, crotalus horridus. the narrow gamonts of h. sauritus are 15.0-19.0 x 3.5-5.0 microm, with lw 58-86 microm2 and l/w 3.2-4.7, with a narrow, rounded anterior end. the spherical to slightly ovoid oocysts produce ovoid to elongate sporocysts, 21-43 x 12-24 microm, l/w 1.20-2.7, containing on average 22.1 (10-34) sporozoites. this is the first report of a natural cross-familial transfer of ... | 2008 | 18564754 |
| diversity of hepatozoon species in naturally infected dogs in the southern united states. | hepatozoon americanum is a protozoan that causes american canine hepatozoonosis (ach) in the southern united states; hepatozoon canis, the causative agent of canine hepatozoonosis in africa, asia, europe, and south america, has not previously been definitively identified in dogs in the united states. to characterize the diversity of hepatozoon spp. in domestic dogs from oklahoma, blood samples collected from dogs residing in an endemic area of the state, clinical cases presented to veterinarians ... | 2008 | 18485602 |
| molecular survey and genetic characterization of tick-borne pathogens in dogs in metropolitan recife (north-eastern brazil). | to identify dna of the main tick-borne pathogens in dogs from recife (brazil), polymerase chain reactions were carried out on blood samples of dogs treated at the veterinary hospital of the universidade federal rural de pernambuco from march 2007 to june 2008. the detection of dna was performed using specific primers. amplicons were analyzed through electrophoresis and sequencing. a phylogenetic tree was constructed using the upgma method, revealing that the sequences were closely related to tho ... | 2010 | 20680344 |
| fatal canine distemper infection in a pack of african wild dogs in the serengeti ecosystem, tanzania. | in 2007, disease related mortality occurred in one african wild dog (lycaon pictus) pack close to the north-eastern boundary of the serengeti national park, tanzania. histopathological examination of tissues from six animals revealed that the main pathologic changes comprised interstitial pneumonia and suppurative to necrotizing bronchopneumonia. respiratory epithelial cells contained numerous eosinophilic intracytoplasmic inclusion bodies and multiple syncytial cells were found throughout the p ... | 2010 | 20684868 |
| first report of hepatozoon sp. in the oregon spotted frog, rana pretiosa. | from 2005 through 2008, we screened 650 oregon spotted frogs (rana pretiosa) from three populations in central oregon, usa, for hemoparasites. a hepatozoon sp., not previously reported in r. pretiosa, was found in one population of frogs, mostly as intracellular gamonts at a prevalence of 10.5% with parasitemias ranging from 0.02% to greater than 42% of erythrocytes within individual frogs. intra-and extracellular merozoites were present, but rare. a potential vector, the mosquito culex boharti, ... | 2010 | 20688705 |
| caiman-biting mosquitoes and the natural vectors of hepatozoon caimani in brazil. | mosquitoes that feed on crocodilians are poorly known, despite the potential role of these exothermic animals as reservoirs of arboviruses. in this article, we assessed the frequency, abundance, and temporal variation of caiman-biting mosquitoes as well as searched for the natural vectors of the blood parasite of caimans, hepatozoon caimani, in the pantanal area of central-western brazil from captures conducted bimonthly from september 2006 to september 2007 and in february 2008. a total of 5,27 ... | 2010 | 20695284 |
| experimental transmission of hepatozoon gracilis (wenyon, 1909) com. nov., in its natural host the bean skink lizard (mabuya quinquetaeniata quinquetaeniata) and vector culex (c.) pipiens (diptera: culicidae). | the bean skink lizard mabuya quinquetaeniata quinquetaeniata (family: scincidae) collected from abu-rawash, giza was infected with the protozoon hepatozoon gracilis. the mean percent of infection rate all over the year was 12.57% with the highest peak was in october (33%), meanwhile the lowest infection rate was detected in june (2.1%) and no infection was detected in february. microscopical examination of experimentally infected culex (c.) pipiens l smears revealed the presence of gamogony and ... | 2007 | 18431994 |
| hepatozoon ursi n. sp. (apicomplexa: hepatozoidae) in japanese black bear (ursus thibetanus japonicus). | morphological and genetic features of a new hepatozoon species, hepatozoon ursi n. sp., in japanese black bear (ursus thibetanus japonicus) were studied. schizogonic developmental stages were observed in the lungs of japanese black bears. the schizonts were sub-spherical in shape and 45.7+/-4.6 x 42.7+/-4.5 microm in size. each mature schizont contained approximately 80-130 merozoites and 0-5 residual bodies. the merozoites were 7.0+/-0.7 x 1.8+/-0.3 microm in size. intraleukocytic gametocytes w ... | 2008 | 18329332 |
| description of gamontogonic and sporogonic stages of hepatozoon spp. (apicomplexa, hepatozoidae) from caudisoma durissa terrifica (serpentes, viperidae). | three specimens of caudisoma durissa terrifica infected with hepatozoon spp. were studied. one was parasitized by one type of gamont and the other two were each infected by two morphologically different gamonts. utilizing morphology and morphometry analysis, we concluded that three types of gamonts were very similar and may represent the same hepatozoon species, but at least three different hepatozoon species were infecting the c. durissa terrifica snakes in this study. some of this species caus ... | 2010 | 20972580 |
| [not available]. | | 1946 | 21027453 |
| a case of hepatozoon canis. | | 1946 | 21028704 |
| evolution of clinical, haematological and biochemical findings in young dogs naturally infected by vector-borne pathogens. | longitudinal studies evaluating the evolution of clinical, haematological, biochemical findings in young dogs exposed for the first time to multiple vector-borne pathogens have not been reported. with the objective of assessing the evolution of clinical, haematological and biochemical findings, these parameters were serially monitored in naturally infected dogs throughout a 1-year follow-up period. young dogs, infected by vector-borne pathogens based on cytology or polymerase chain reaction, wer ... | 2010 | 21106311 |
| a hepatozoon species genetically distinct from h. canis infecting spotted hyenas in the serengeti ecosystem, tanzania. | health monitoring of spotted hyenas (crocuta crocuta) in the serengeti ecosystem, tanzania, revealed hepatozoon infection in all of 11 immature individuals examined following death from natural causes. hepatozoon infection was probably an important factor contributing to mortality in two cases that exhibited clinical signs of ataxia, lethargy, ocular discharge, retching, and labored breathing before death. whether hepatozoon infection contributed to six deaths from fire, probable lion predation ... | 2008 | 18263820 |
| normal haematology and blood biochemistry of wild nile crocodiles (crocodylus niloticus) in the okavango delta, botswana. | wild nile crocodiles (crocodylus niloticus) of various size classes were captured in the okavango delta, botswana. blood was collected from the post occipital sinus and used for the determination of a wide range of haematological and biochemical parameters. these values were compared between the sexes and between 3 size classes. the values were also compared with the limited data available from farmed nile crocodiles, as well as from other wild nile crocodiles. the okavango crocodiles were compa ... | 2007 | 18237036 |
| oocysts of hepatozoon canis in rhipicephalus (boophilus) microplus collected from a naturally infected dog. | canine hepatozoonosis is a tick-borne disease caused by protozoans of the genus hepatozoon. several tick species have been implicated as potential vectors. therefore, extensive studies are needed to determine the 'natural' endemic cycle of this parasite. this paper presents the first report of the presence of hepatozoon canis oocysts in rhipicephalus (boophilus) microplus collected from an infected dog. | 2011 | 21324597 |
| molecular and parasitological survey of hepatozoon canis (apicomplexa: hepatozoidae) in dogs from rural area of sao paulo state, brazil. | hepatozoon canis is a protozoan that infects dogs and is transmitted by the ingestion of the brown dog tick, rhipicephalus sanguineus. two distinct species of hepatozoon genus can infect dogs, h. canis and h. americanum. routine tests to detect the disease are based on direct examination of gametocytes on giemsa-stained blood smears. the objectives of this study were the investigation of infection prevalence in rural area dogs, the comparison of diagnostics by blood smear examination and polymer ... | 2008 | 18188597 |
| the first detection of babesia species dna from japanese black bears (ursus thibetanus japonicus) in japan. | in this study, we tried to detect protozoan blood parasites from the liver or blood of 156 japanese black bears (ursus thibetanus japonicus) in iwate prefecture of japan by polymerase chain reaction. two amplicons (approximately 540 bp and 480 bp) were detected by amplification for v4 hyper-variable regions of the 18s rrna gene. approximately 540-bp products were obtained in 119 samples (76.3%) and were considered to be dna of hepatozoon ursi. approximately 480-bp products were obtained in 22 sa ... | 2011 | 21376138 |