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 [South Africa]

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....

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Bibliographic Details
Published in:Onderstepoort journal of veterinary research 1999-09, Vol.66 (3), p.175
Main Author: Horak, I.G. (Pretoria Univ., Onderstepoort (South Africa). Dept. of Veterinary Tropical Diseases)
Format: Article
Language:English
Subjects:
AFRIQUE DU SUD
AMBLYOMMA
ANIMAL DOMESTIQUE
ANIMAL SALVAJE
ANIMAL SAUVAGE
ANIMALES DOMESTICOS
Animals
BOOPHILUS
Cattle
Cattle Diseases - epidemiology
DOMESTIC ANIMALS
Female
Insecticides
Ixodes - drug effects
IXODIDAE
Male
PENNISETUM CLANDESTINUM
Poaceae
Population Density
RHIPICEPHALUS
SEASONAL VARIATION
Seasons
SOUTH AFRICA
South Africa - epidemiology
SUDAFRICA
Tick Infestations - veterinary
VARIACION ESTACIONAL
VARIATION SAISONNIERE
WILD ANIMALS
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Summary: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 reduction in the number of ticks on the calves. Successive pairs of yearling cattle exposed to infestation on a farm in Valley Bushveld were slaughtered at monthly intervals over a period of 2 years and examined for ixodid ticks. Eleven species were recovered, of which Amblyomma hebraeum, Haemaphysalis silacea, Rhipicephalus appendiculatus and Rhipicephalus glabroscutatum were the most abundant and prevalent. Adult A. hebraeum were generally most numerous from early to late summer, adult R. appendiculatus from mid to late summer, and adult R. glabroscutatum from spring to mid-summer.
ISSN:0030-2465
2219-0635