Publications

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the seasonal activity of adult ixodid ticks on angora goats in the south western orange free state.adult ixodid ticks were collected at 2-weekly intervals for a period of 23 consecutive months from 15 to 20 angora goats on a farm in the south western orange free state. a total of 6 ixodid tick species were recovered. rhipicephalus punctatus was the most abundant and prevalent tick. it was present from spring to late summer. ixodes rubicundus was the next most abundant tick and was present mainly from march or april to july with peak numbers present in april or may. the onset of this tick's ac ...19911770478
sites of attachment and intraspecific infestation densities of the brown paralysis tick (rhipicephalus punctatus) on angora goats.significant differences in the distribution of brown paralysis ticks on various age classes of angora goats were recorded. in kids, most (greater than 98%) of the ticks attached to the head and ears, whereas in older groups, in addition to the ears, a high proportion (greater than 20%) of ticks also attached to the ventral side of the neck. there were significant differences in the mean infestation densities of both male and female r. punctatus in kids and older animals. these differences were, ...19911773681
parasites of domestic and wild animals in south africa. xxix. ixodid ticks on hares in the cape province and on hares and red rock rabbits in the orange free state.one hundred and seventeen scrub hares, lepus saxatilis, were examined for ixodid ticks in various regions of the cape province. they were infested with 18 tick species and the seasonal abundances of the immature stages of amblyomma hebraeum, amblyomma marmoreum, hyalomma marginatum rufipes, rhipicephalus appendiculatus and rhipicephalus glabroscutatum and all stages of rhipicephalus oculatus and the adults of a rhipicephalus sp. (near r. oculatus) were determined. seventy-two scrub hares on 3 fa ...19911780126
observations on cattle ticks in huila province (angola).in huila province of angola, 3864 ticks were collected during a parasitological survey carried out in the rainy season from october 1990 to april 1991. the samples were collected from cattle gathered for the annual vaccination campaign against contagious bovine pleuropneumonia, anthrax and blackleg in 18 veterinary stations of six municipalities. after tick classification, the following proportions of ticks were obtained: rhipicephalus evertsi mimeticus (27.1%), amblyomma pomposum (26.4%), booph ...19948171837
adult ixodid ticks on two cattle breeds in the south-western free state, and their seasonal dynamics.a study was conducted to compare the species of adult ixodid ticks on friesian and bonsmara cattle and their seasonal dynamics. between five and ten animals of each breed were kept on natural false upper karoo vegetation, typical of the south-western free state. between may 1990 and october 1991, the animals were examined once or twice a month for the presence of adult ticks which were removed, counted and identified. six species of ixodid ticks were recorded. the species composition on the two ...19968848299
the appetence behaviour of two south african paralysis-inducing ixodid ticks.the appetence responses of the ixodid ticks ixodes rubicundus and rhipicephalus punctatus to various stimuli were quantified under laboratory conditions. a greater percentage of i. rubicundus generally responded to the different stimuli at lower than at higher temperatures while the converse was usually true for r. punctatus. radiation heat and shadowing evoked a response in the greatest percentage of i. rubicundus, whereas co2 and host odour were responsible for a similar reaction in r. punctat ...19937628229
clarification of the status of rhipicephalus kochi dönitz, 1905 (ixodoidea, ixodidae).figures of the types of rhipicephalus kochi, and of its synonym rhipicephalus neavei warburton, 1912, are presented. these are accompanied by complete descriptions of all stages of r. kochi, illustrated with scanning electron microscope photographs. the basic differences between this species, rhipicephalus pravus dönitz, 1910 and rhipicephalus punctatus warburton, 1912 are outlined. r. kochi occurs south of the equator in parts of eastern, central and southern africa. its adults feed most common ...19836877798
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