| on the life cycle of theileria velifera (uilenberg, 1964) in the gut and the haemolymph of the tick vector amblyomma variegatum (fabriciu, 1794). | the development of theileria velifera in the gut and the haemolymph of the tick vector amblyomma variegatum is described. between days three and eight after repletion various sexual stages are present in the gut of the nymphs. zygotes were detected in the gut on day 14, while undifferentiated kinetes first appeared on day 15. in the haemolymph, differentiated kinetes were observed from day 16 after repletion onwards. zygotes and kinetes were also found after the moult, in the adult tick, for a p ... | 1979 | 120627 |
| theileria velifera demonstrated in cattle in the eastern cape province of the republic of south africa. | | 1979 | 121748 |
| the differential diagnosis of the bovine theilerias of southern africa. | it is currently thought that the following species or sub-species of theileria occur in cattle in southern africa: theileria parva parva (east coast fever), theileria parva lawrencei (corridor disease), theileria parva bovie (rhodesian theileriosis), theileria mutans proper (transmitted by amblyomma species), so-called theileria mutans (a non-pathogenic species transmitted by rhipicephalus appendiculatus, possibly identical with theileria taurotragi) and theileria velifera. the parasites can be ... | 1979 | 122000 |
| erythrocytic forms of theileria velifera. | the enigmatic veil associated with the cattle parasite haematoxenus veliferus has been shown to be crystallike in ultrastructure and to stain with benzidine like haemoglobin. the ultrastructure of the organism is similar to that of other theilerial parasites. as less distinct veil-like structures are known to occur with some other theileria species, and in one case, have also been shown to be crystalline in structure, it is proposed to sink the genus haematoxenus as a synonym of theileria. | 1978 | 418470 |
| [ticks and hemoparasitic diseases in cattle in senegal. iv. the southern sudan area]. | the authors report on the results of an investigation on ticks and hemoparasitoses of cattle, sheep and goats in the south sudanian area of senegal. systematic routine dipping against ticks of cattle, 40 sheep and 40 goats was set during 15 months, with a view to determine the population dynamics together with an acurate localization of the different species concerned. the following parasites were collected from these ruminants: amblyomma variegatum, boophilus geigyi, hyalomma truncatum, h. m. r ... | 1990 | 2218038 |
| [the presence of theileria velifera in senegal]. | | 1987 | 3453500 |
| [existence of theileria mutans and theileria velifera (sporozoa, theileriidae) in guadeloupe (french west indies)]. | | 1983 | 6424188 |
| [ticks and hemoparasitoses in livestock in senegal. v. the northern guinea area]. | the authors report the results of a study on ticks and hemoparasitoses among cattle, sheep and goats in the north-guinean zone. during a period of 15 months, ticks were systematically removed from 40 cattle, 40 sheep and 40 goats in order to assess the population dynamics and to determine more accurately the preferential sites of settlement of the following different species collected from these animals: amblyomma variegatum, boophilus geigyi, hyalomma truncatum, h. marginatum rufipes, rhipiceph ... | 1993 | 8073170 |
| application of a reverse line blot assay to the study of haemoparasites in cattle in uganda. | recent advances in genomic technology have focused many veterinary researchers on the possibility of producing one multivalent recombinant vaccine against all the haemoparasites that infect cattle in the tropics. before such a vaccine is developed it is essential to define target cattle populations as well as the range of anti-pathogen vaccines required in order to control disease. to further this objective, we have evaluated a reverse line blot (rlb) assay, which simultaneously detects the prin ... | 2004 | 15064125 |
| incidence and prevalence of tick-borne haemoparasites in domestic ruminants in ghana. | giemsa-stained thin blood smears prepared monthly from cattle, sheep and goats in the greater accra region of ghana between may 1994 and december 1996 were examined for presence of tick-borne haemoparasites. the majority of animals were less than 2 months old at the start of the survey. monthly and cumulative incidences are presented of anaplasma sp., babesia bigemina, borrelia sp., eperythrozoon sp., theileria mutans and theileria velifera in cattle, anaplasma sp., borrelia sp., and theileria s ... | 2004 | 15350659 |
| detection of babesia caballi in amblyomma variegatum ticks (acari: ixodidae) collected from cattle in the republic of guinea. | a reverse line blot hybridisation (rlb) assay was applied to screen amblyomma variegatum adult ticks (n = 504) collected from n'dama cattle in the republic of guinea. in a pcr, the v1 hypervariable region of the 16s ribosomal rna (rrna) gene was amplified with a set of primers unique for species of the genera anaplasma and ehrlichia, and the v4 hypervariable region of the 18s rrna gene was amplified with primers specific for members of the genera theileria and babesia. amplified pcr products fro ... | 2005 | 16252481 |
| epidemiological studies on tick-borne diseases of cattle in central equatoria state, southern sudan. | a herd-based study was carried out in central equatoria state, southern sudan, to study epidemiological aspects of tick-borne diseases. six herds of cattle situated in three different locations were selected and investigated every 3 months during the year 2005. blood smears for giemsa staining and blood spots on filter paper for deoxyribonucleic acid extraction were collected from 600 apparently healthy indigenous cattle. a total of 69 (11.5%) samples showed the presence of piroplasms in giemsa- ... | 2007 | 17530477 |
| theileria parva genetic diversity and haemoparasite prevalence in cattle and wildlife in and around lake mburo national park in uganda. | wildlife, especially cape buffalo (syncerus caffer), are thought to act as a reservoir for many of the important tick-borne pathogens of cattle. in this study, we have determined the prevalence of the most significant tick-borne haemoparasites in wildlife (buffalo, impala, eland and bushbuck) as well as in cattle grazing inside and neighbouring lake mburo national park (lmnp) in uganda. a high percentage of buffalo were carriers of theileria parva, theileria mutans, theileria velifera, theileria ... | 2011 | 20827491 |
| tick-borne pathogens of zoonotic and veterinary importance in nigerian cattle. | ticks and tick-borne diseases undermine cattle fitness and productivity in the whole of sub-saharan africa, including nigeria. in this west african country, cattle are challenged by numerous tick species, especially during the wet season. consequently, several tbds are known to be endemic in nigerian cattle, including anaplasmosis, babesiosis, cowdriosis and theilerioris (by theileria mutans and theileria velifera). to date, all investigations on cattle tbds in nigeria have been based on cytolog ... | 2016 | 27090756 |
| novel rickettsia and emergent tick-borne pathogens: a molecular survey of ticks and tick-borne pathogens in shimba hills national reserve, kenya. | ticks are important vectors of emerging and re-emerging zoonoses, the majority of which originate from wildlife. in recent times, this has become a global public health concern that necessitates surveillance of both known and unknown tick-borne pathogens likely to be future disease threats, as well as their tick vectors. we carried out a survey of the diversity of ticks and tick-borne pathogens in kenya's shimba hills national reserve (shnr), an area with intensified human-livestock-wildlife int ... | 2017 | 28011185 |
| phylogenetic analysis of bovine theileria spp. isolated in south india. | the objective of the present study is to determine the phylogenetic position of the theileria organisms in blood of cattle of southern india using molecular tools. theileria annulata (namakkal isolate, tamil nadu) and three theileria field isolates (free of t. annulata) from wayanad, kerala (wayanad 1, 2, 3) were used. the small subunit ribosomal rna (ssu rrna) and major piroplasm surface protein (mpsp) gene products were cloned, sequenced and the phylogenetic tree constructed. ssu rrna gene of ... | 2013 | 23959494 |
| evaluation of a real-time pcr test for the detection and discrimination of theileria species in the african buffalo (syncerus caffer). | a quantitative real-time pcr (qpcr) assay based on the cox iii gene was evaluated for the simultaneous detection and discrimination of theileria species in buffalo and cattle blood samples from south africa and mozambique using melting curve analysis. the results obtained were compared to those of the reverse line blot (rlb) hybridization assay for the simultaneous detection and differentiation of theileria spp. in mixed infections, and to the 18s rrna qpcr assay results for the specific detecti ... | 2013 | 24146782 |
| molecular detection of piroplasms in ixodid ticks infesting cattle and sheep in western oromia, ethiopia. | in ethiopia, ticks and tick-borne diseases are widely distributed and contribute to important economic losses. several studies investigated the prevalence and species composition of ticks infesting ruminants; however, data on tick-borne pathogens are still scarce. during the study period from october 2010 to april 2011, a total of 1,246 adult ticks and 264 nymphs were collected from 267 cattle and 45 sheep in bako district, western oromia, ethiopia. the study showed infestation of 228/267 (85.4 ... | 2014 | 23846769 |
| sequence variation identified in the 18s rrna gene of theileria mutans and theileria velifera from the african buffalo (syncerus caffer). | the african buffalo (syncerus caffer) is a natural reservoir host for both pathogenic and non-pathogenic theileria species. these often occur naturally as mixed infections in buffalo. although the benign and mildly pathogenic forms do not have any significant economic importance, their presence could complicate the interpretation of diagnostic test results aimed at the specific diagnosis of the pathogenic theileria parva in cattle and buffalo in south africa. the 18s rrna gene has been used as t ... | 2013 | 22940566 |
| molecular detection of pathogens in ticks infesting cattle in nampula province, mozambique. | ticks are ectoparasites that can act as vectors of a large number of pathogens in wild and domestic animals, pets, and occasionally humans. the global threat of emerging or re-emerging tick-borne diseases supports the need for research focused in the zoonotic transmission, especially in countries like mozambique where rural populations are in close contact with domestic animals. the present study aims to: (1) identify tick species infesting cattle from monapo and nacala porto, districts of nampu ... | 2017 | 28856544 |