| [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 |
| bacterial isolation from and transmission by boophilus decoloratus and boophilus geigyi. | bacteria were isolated from the haemolymph of boophilus decoloratus and boophilus geigyi which had engorged on trade cattle in nigeria. all the genera of the bacteria were also isolated from the eggs which they laid although some of them were missing from the larvae which eventually hatched. when clean rabbits were inoculated with some genera of bacteria and clean, laboratory bred larvae of b. decoloratus and b. geigyi fed on them, the same genera of bacteria were subsequently isolated from the ... | 1987 | 3108116 |
| ticks (acari:ixodidae) of the blue and white nile ecosystems in the sudan with particular reference to the rhipicephalus sanguineus group. | twenty-four adult ixodid tick species, infesting livestock and some wildlife hosts along the blue and white nile in the sudan, were identified. three species, boophilus geigyi, rhipicephalus camicasi and r. bergeoni, were recorded for the first time from the sudan. tick numbers on indigenous breeds of cattle (bos indicus) were relatively low, ranging between 17.1 and 40.5 per animal. young cattle grazing with the herd carried significantly fewer ticks than older animals. with the exception of b. ... | 1987 | 3331134 |
| the developmental viability and sizes of sequentially oviposited eggs of boophilus decoloratus and boophilus geigyi. | the viability and sizes of eggs sequentially laid up to the 10th day of oviposition by engorged boophilus decoloratus and boophilus geigyi were studied. the average length and breadth of eggs laid on the 1st and 2nd days of oviposition were statistically greater than at subsequent ovipositions. the eclosion periods of eggs laid from 7th to 10th day of oviposition were shorter than those of eggs laid earlier by both boophilus species. the percentage mortality of eggs of 9th and 10th day of ovipos ... | 1985 | 3870960 |
| the effects of temperature, relative humidity and host factors on the attachment and survival of boophilus decoloratus and boophilus geigyi larvae to skin slices. | attachment and survival of boophilus decoloratus and b. geigyi larvae were examined using skin slices from cattle, sheep and goats. results indicate that b. decoloratus has a wider range of temperature (24-40 degrees c) at which more than 50% of larvae would attach to bovine skin, while b. geigyi has a narrower range (24-30 degrees c). the larvae of both species had two peaks of attachment--the 4th and 20th hour, the value for the second peak being greater than the first. the influence of humidi ... | 1985 | 3988163 |
| studies on ticks of veterinary importance in nigeria. viii. differences observed in the biology of ticks which fed on different domestic animal hosts. | ticks of the species amblyomma variegatum (fabr.), boophilus decoloratus (koch), boophilus geigyi aeschl. et morel, and hyalomma rufipes koch were detached from cattle, sheep and horses and the influence of these various hosts on the biology of ticks was investigated. no a. variegatum was found in horses. the parameters studied were preoviposition and oviposition periods, ovipositional capacity, eclosion period, hatching patterns, egg sizes and temperature effect. although the preoviposition and ... | 1984 | 6714846 |
| detection of babesia bovis infections in boophilus geigyi with egg crushings, larval smears, and haemolymph puncture. | investigations regarding the detection of babesia bovis infections in boophilus geigyi revealed that: (a) by the egg crushing method, babesia bovis infection in ticks is detected from the 5th day onward and up to the 22nd or 24th day before disappearing. (b) by means of haemolymph puncture, infection could only be noticed from the 5th or 6th day up to the 14th day. (c) babesia bovis infection can be easily detected from days 1-4 in the larvae of 'infected' ticks. 'uninfected' ticks which show ne ... | 1981 | 7268748 |
| comparison of characteristics of life cycle in female ticks collected on n'dama and zebu cattle. | characteristics of the life cycle of female ticks (amblyomma variegatum, hyalomma truncatum and boophilus geigyi) fed on n'dama and zebu cattle were studied in the laboratory from pre-oviposition period to larval development. percentage of a. variegatum eggs hatched and engorgement weight of h. truncatum were lower in ticks collected on n'dama than on zebu cattle. laboratory results confirmed field observations of species specific tick resistance in the n'dama breed. | 1995 | 7502345 |
| [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 |
| [boophilus geigyi n. sp. (acarina: ixodiodea), a new tick from cattle of west africa]. | | 1965 | 14319774 |
| monthly dynamics of ticks (acari:ixodida) infesting n'dama cattle in the republic of guinea. | the occurrence of ixodid ticks on n'dama cattle was studied in the republic of guinea between june 1994 and may 1995. monthly tick collections were performed on 80 animals from 14 villages located in dabola, kouroussa and dinguiraye prefectures. a total of 19,804 ticks was collected and classified using standard taxonomic keys. the following tick species were identified: amblyomma variegatum, hyalomma marginatum rufipes, hyalomma trunctum, hyalomma nitidum, rhipicephalus lunulatus, rhipicephalus ... | 2004 | 15139086 |
| warmer weather linked to tick attack and emergence of severe rickettsioses. | the impact of climate on the vector behaviour of the worldwide dog tick rhipicephalus sanguineus is a cause of concern. this tick is a vector for life-threatening organisms including rickettsia rickettsii, the agent of rocky mountain spotted fever, r. conorii, the agent of mediterranean spotted fever, and the ubiquitous emerging pathogen r. massiliae. a focus of spotted fever was investigated in france in may 2007. blood and tissue samples from two patients were tested. an entomological survey w ... | 2008 | 19015724 |
| assessment of bacterial diversity in the cattle tick rhipicephalus (boophilus) microplus through tag-encoded pyrosequencing. | ticks are regarded as the most relevant vectors of disease-causing pathogens in domestic and wild animals. the cattle tick, rhipicephalus (boophilus) microplus, hinders livestock production in tropical and subtropical parts of the world where it is endemic. tick microbiomes remain largely unexplored. the objective of this study was to explore the r. microplus microbiome by applying the bacterial 16s tag-encoded flx-titanium amplicon pyrosequencing (btefap) technique to characterize its bacterial ... | 2011 | 21211038 |
| detection of borrelia theileri in rhipicephalus geigyi from mali. | disease burden within cattle is a concern around the world. bovine borreliosis, one such disease, is caused by the spirochete borrelia theileri transmitted by the bite of an infected rhipicephalus (boophilus) species tick. a number of species within the genus are capable of transmitting the agent and are found on multiple continents. cattle in the west african nation of mali are infested with four species of rhipicephalus ticks of the subgenus boophilus: rhipicephalus annulatus, rhipicephalus mi ... | 2014 | 24709337 |
| the recent evolution of a maternally-inherited endosymbiont of ticks led to the emergence of the q fever pathogen, coxiella burnetii. | q fever is a highly infectious disease with a worldwide distribution. its causative agent, the intracellular bacterium coxiella burnetii, infects a variety of vertebrate species, including humans. its evolutionary origin remains almost entirely unknown and uncertainty persists regarding the identity and lifestyle of its ancestors. a few tick species were recently found to harbor maternally-inherited coxiella-like organisms engaged in symbiotic interactions, but their relationships to the q fever ... | 2015 | 25978383 |
| 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 |
| heteroplasmy in the mitochondrial genomes of human lice and ticks revealed by high throughput sequencing. | the typical mitochondrial (mt) genomes of bilateral animals consist of 37 genes on a single circular chromosome. the mt genomes of the human body louse, pediculus humanus, and the human head louse, pediculus capitis, however, are extensively fragmented and contain 20 minichromosomes, with one to three genes on each minichromosome. heteroplasmy, i.e. nucleotide polymorphisms in the mt genome within individuals, has been shown to be significantly higher in the mt cox1 gene of human lice than in hu ... | 2013 | 24058467 |
| multiple pathogens including potential new species in tick vectors in côte d'ivoire. | our study aimed to assess the presence of different pathogens in ticks collected in two regions in côte d'ivoire. | 2016 | 26771308 |
| experiences in tick control by acaricide in the traditional cattle sector in zambia and burkina faso: possible environmental and public health implications. | livestock, especially cattle, play a paramount role in agriculture production systems, particularly in poor countries throughout the world. ticks and tick-borne diseases (tbds) have an important impact on livestock and agriculture production in sub-saharan africa. the authors review the most common methods used for the control of ticks and tbds. special emphasis is given to the direct application of acaricides to the host animals. the possible environmental and public health adverse effects (i.e ... | 2016 | 27882313 |
| 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 |
| 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 |
| tick (acari: ixodidae) infestations in cattle along geba river basin in guinea-bissau. | tick infestations are a major problem for animal production in tropical areas where prevention and control remain deficient. the present study sought to assess the awareness of traditional cattle producers towards the importance of ticks and aimed at the identification of tick species infesting bovines within the geba river basin, guinea-bissau. interviews with producers revealed that the majority directly correlates the presence of ticks with the occurrence of diseases in cattle. however, insuf ... | 2017 | 27825658 |
| tick control practices in burkina faso and acaricide resistance survey in rhipicephalus (boophilus) geigyi (acari: ixodidae). | traditional systems account for 95 % of the livestock produced in burkina faso. tick infestation hampers livestock productivity in this area. however, little information exists on tick-control practices used by livestock farmers. we interviewed 60 stockbreeders working in traditional farming systems to obtain the first data on tick-control practices. sixteen farmers (27 %) did not use conventional practices: seven removed ticks by hand or plastered cattle with dung or engine oil; nine farmers tr ... | 2013 | 22968469 |