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parasites of domestic and wild animals in south africa. xxv. ixodid ticks on sheep in the north-eastern orange free state and in the eastern cape province.the tick burdens of 115 merino sheep, slaughtered over a period of 15 consecutive months on a farm in the north-eastern orange free state, were determined. a total of 7 ixodid and 1 argasid tick species were recovered and the seasonal abundances of boophilus decoloratus, hyalomma marginatum rufipes, margaropus winthemi and rhipicephalus evertsi evertsi were determined. one hundred and forty-nine merino sheep were slaughtered over periods varying from 10 to 25 months on 3 farms in eastern provinc ...19911923373
parasites of domestic and wild animals in south africa. xxvii. ticks on helmeted guineafowls in the eastern cape province and eastern transvaal lowveld.seventy-six helmeted guineafowls (numida meleagris) were shot in the andries vosloo kudu reserve and on an adjacent farm in the eastern cape province during the period may 1985 to january 1987 and their tick burdens determined. a total of 10 ixodid tick species were recovered, of which amblyomma hebraeum, amblyomma marmoreum and haemaphysalis silacea were the most abundant. the seasonal abundances of these 3 species and of hyalomma marginatum rufipes were ascertained. a marked difference between ...19911923375
two new species of ticks from southern africa whose adults parasitize the feet of ungulates: rhipicephalus lounsburyi n. sp. and rhipicephalus neumanni n. sp. (ixodoidea, ixodidae).theiler & robinson (1953) described, as rhipicephalus follis dönitz, 1910, a tick species originating from dordrecht, eastern cape province. a comparison of this tick with the syntypes of r. follis has now shown, though, that these 2 entities are different and it is therefore redescribed below as rhipicephalus lounsburyi n. sp. its adults parasitize sheep and various wild ungulates, attaching primarily on their feet. the hosts of the immature stages are still unknown. it has now been recorded fr ...19902338999
parasites of domestic and wild animals in south africa. xxii. ixodid ticks on domestic dogs and on wild carnivores.ixodid ticks were collected from 4 dogs on smallholdings near grahamstown, eastern cape province, on 1 or more occasions each week for periods ranging from 9-36 months. fourteen tick species were recovered and the seasonal abundance of adult haemaphysalis leachi and adult rhipicephalus simus was determined. complete collections of ticks were made from 50 caracals (felis caracal) in the cradock, graaff-reinet and southwell regions in the eastern cape province. the animals from cradock and graaff- ...19873444612
foot abscess in goats in relation to the seasonal abundance of adult amblyomma hebraeum and adult rhipicephalus glabroscutatum (acari: ixodidae).the seasonal prevalence of foot abscess affecting angora and boer goats in valley bushveld in the eastern cape province of south africa was significantly related to the seasonal abundance of adult amblyomma hebraeum and adult rhipicephalus glabroscutatum. angora goats harboured more ticks than boer goats and also had a greater number of abscessed feet. larger numbers of ticks and abscesses were recorded on hind feet than on fore feet. there was no significant correlation between rainfall and the ...19873508202
the distribution and hosts of rhipicephalus glabroscutatum.three domestic and 12 wild species of ungulate have been recorded as hosts of rhipicephalus glabroscutatum. the major site of attachment for larvae, nymphs and adults is around the hooves and on the lower legs. this tick is virtually confined to the eastern cape province, republic of south africa. classed as an obligative xerophile it inhabits non-coastal areas of low rainfall characterized by karoo and karoid vegetation.19854011156
abiotic and biotic determinants of the seasonal dynamics of the tick rhipicephalus appendiculatus in south africa.the creation of a generic population model for the tick rhipicephalus appendiculatus requires a detailed, quantified understanding of the interactions of these ticks with their biotic and abiotic environment in the different parts of their range, from the tropical regions of east africa to the temperate regions of south africa. the much greater seasonal variation in climatic conditions, particularly temperature, further from the equator introduces variable development rates and diapause into the ...19979061674
parasites of domestic and wild animals in south africa. xxxvii. ixodid ticks on cattle on kikuyu grass pastures and in valley bushveld in the eastern cape province.individual calves, exposed to infestation for 14 d on dry-land kikuyu grass pastures on the coast near alexandria, were slaughtered at approximately monthly intervals over a period of 2 years and examined for ticks. although seven species were recovered total tick burdens were for the most part low. changing the acaricide with which other cattle on the farm, but not the survey calves, were treated from an organophosphate-based compound to a synthetic pyrethroid resulted in a marked sustained red ...199910631707
parasites of domestic and wild animals in south africa. xxxix. helminth and arthropod parasites of angora goats in the southern karoo.parasites were collected from 160 angora goats and kids on the jansenville experimental farm, eastern cape province. six nematodes were identified to species level and three to generic level. nematodirus spathiger was the most numerous of the economically important nematodes recovered. it was always present, and fourth stage larvae were collected from untreated goats from august to march, while animals used as tracers also picked up most infection from august to march. kids born on the farm duri ...200111403427
acaricide resistance profiles of single- and multi-host ticks from communal and commercial farming areas in the eastern cape and north-west provinces of south africa.a field study (february 2000 to august 2001) was conducted on communal and commercial farms in the eastern cape and north-west provinces of south africa to detect the levels of tick resistance to commonly used acaricides. the larvae obtained from engorged females of the one-host tick boophilus decoloratus, the two-host tick rhipicepalus evertsi evertsi and the three-host ticks amblyomma hebraeum and rhipicephalus appendiculatus were tested against various concentrations of amitraz, chlorfenvinph ...200212234005
ixodid ticks of angora and boer goats, grysbok, common duikers, kudus and scrub hares in valley bushveld in the eastern cape province, south africa.at monthly intervals from february 1983 to january 1984 two angora goats, two boer goats, one grysbok, raphicerus melanotis, one common duiker, sylvicapra grimmia, one greater kudu, tragelaphus strepsiceros, and four scrub hares, lepus saxatilis, were killed on a farm in valley bushveld in the eastern cape province, south africa and examined for ticks. seven ixodid tick species were collected, of which rhipicephalus glabroscutatum followed by amblyomma hebraeum and rhipicephalus oculatus were th ...200312967172
striped mice, rhabdomys pumilio, and other murid rodents as hosts for immature ixodid ticks as in the eastern cape province.striped mice, rhabdomys pumilio, were trapped over a period of 17 months in the thomas baines nature reserve, and placed in cages, over water, until all the ticks they harboured had detached. the mice were then returned to the reserve. four ixodid tick species were recovered from the mice of which the larvae and nymphs of rhipicephalus follis and rhipicephalus simus were the most numerous. most larvae of r. follis detached from mice trapped from march to july, and most nymphs in march and from j ...200415732458
ixodid ticks on dogs in the eastern region of the eastern cape province, south africa.the objective of this study was to determine the species composition and geographic distribution of ixodid ticks infesting domestic dogs in the eastern region of the eastern cape province. seventy-two communal cattle dip-tanks within this region were randomly selected as survey localities and their geographic coordinates recorded. in addition to ticks that were collected from five cattle and five goats at each of the dip-tanks, ticks were also collected from five dogs whenever possible. no dogs ...200617283731
goats as alternative hosts of cattle ticks.the objective of this study was to compare the presence on goats and cattle of adult ticks that usually infest cattle. to this end ticks collected from sets of five goats were compared with those collected from sets of five cattle at 72 communal dip-tanks in the eastern region of the eastern cape province. amblyomma hebraeum was present on goats at 25 and on cattle at 39 dip-tanks, and a total of 61 goats and 138 cattle were infested. adult rhipicephalus (boophilus) microplus was present on goat ...200717708147
the extent of acaricide resistance in 1-, 2- and 3-host ticks on communally grazed cattle in the eastern region of the eastern cape province, south africa.in order to determine the extent of acaricide resistance in the eastern region of the eastern cape province 1-, 2- and 3-host ticks were collected from cattle at 59 dip-tanks over a period of 2 years. these ticks were tested for resistance against 3 compounds, namely amitraz, cypermethrin and chlorfenvinphos. the shaw larval immersion test detected emerging resistance to amitraz in rhipicephalus (boophilus) microplus at 2 dip-tanks and resistance at a 3rd. it also revealed resistance in this tic ...200819244821
a sero-epidemiological survey of equine piroplasmosis in the northern and eastern cape provinces of south africa.serum samples from yearling thoroughbred horses (n = 176) in the magisterial districts of colesberg, venterstad, and wodehouse in the northern and eastern cape provinces were collected between september and november 1995 to determine the prevalence of antibodies to babesia equi and babesia caballi in these regions. samples were examined for specific antibodies using the indirect fluorescent antibody test. the 95% confidence intervals for the prevalence of serum antibodies in the 3 districts comb ...19969284032
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