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Non-tick stock-specific index for assessing resistance of zebu cattle to Rhipicephalus appendiculatus Neumann (Acarina: Ixodidae)

  • S. Nokoe (a1), D. K. Punyua (a1), P. B. Capstick (a1) and A. A. Latif (a1)

Abstract

A quantitative index of resistance to ticks, which had been derived from results of artificial infestation of East African zebu cattle with a Rusinga Island (Lake Victoria) stock of Rhipicephalus appendiculatus, was tested for consistency using three additional tick stocks—from a laboratory (Muguga), Intona (Trans Mara) and Ukunda (Kenya coast). Results from all the stocks gave similar indices when compared with corresponding values for the Rusinga stock, confirming both the validity of the mathematical function and of the use of any local stock of the tick species for assessing the resistance of cattle to R. appendiculatus.

Un index quantitative de la résistance aux tiques dérivant du résultat d'une infestation artificielle du zebu africain par le Rhipicephalus appendiculatus de l'ile de Rusinga (Lac Victoria) a été testé pour sa consistence lorsque 3 différentes espèces des tiques du laboratoire (Muguga), de Intona (Trans Mara) et Ukunda (Coast Kenyanne).

Le résultat étaient similaire pour toutes les espèces. Ceci confirme la validité de la fonction mathématique et l'utilization de m'importe quelle espèce des tique pour évaluer la resistance.

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References

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Bailey, K. P. (1960) Notes on the rearing of Rhipicephalus appendiculatus and their infection with Theileria parva for experimental transmission. Bull. Epizoot. Dis. Afr. 8, 3343.
Branagan, D. (1973) The development periods of the ixodid tick Rhipicephalus appendiculatus Neumann under laboratory conditions. Bull. Entomol. Res. 63, 155168.
Chiera, J. W., Newson, R. M. and Cunningham, M. P. (1985) Cumulative effects of host resistance on Rhipicephalus appendiculatus Neumann (Acarina: Ixodidae) in the laboratory. Parasitology 90, 401408.
Latif, A. A., Nokoe, S., Punyua, D. K. and Capstick, P. B. (1991a) Tick infestations on zebu cattle in Western Kenya: Quantitative assessment of host resistance. J. Med. Entomol. 28, 122126.
Latif, A. A., Punyua, D.K., Capstick, P.B. and Newson, R. M. (1991b) Tick infestations on zebu cattle in Western Kenya: Quantitative assessment of host resistance. J. Med. Entomol. 28, 127132.
Lutu, W. Z. (1980) The effect of repeated Rhipicephalus appendiculatus infestation on the health of cattle. Unpublished Ph.D. thesis, University of Edinburgh, Scotland.
Nokoe, S., Capstick, P. B., Latif, A. A. and Punyua, D. K. (1992) Derivation of an index for assessing the resistance of zebu cattle to Rhipicephalus appendiculatus Neuman (Acarina: Ixodidae). Insect Sci. Applic. (in press).
Punyua, D. K. (1984) Development periods of Rhipicephalus appendiculatus Neumann (Acarina: Ixodidae) under field conditions. Insect Sci. Applic. 5, 247250.
Punyua, D. K. (1988) Rusinga Island survey: Common ticks on livestock. In Progress in Acarology (Edited by Channabasavanna, G. P. and Viraktamath, C. A.), pp. 6973. Oxford and IBH Publishing Co. PVT. Ltd., New Delhi, Bombay, India.
SAS Institute Inc. (1987) SAS/STAT Guide for Personal Computers, version 6 Edition. Cary, NC.

Keywords

Non-tick stock-specific index for assessing resistance of zebu cattle to Rhipicephalus appendiculatus Neumann (Acarina: Ixodidae)

  • S. Nokoe (a1), D. K. Punyua (a1), P. B. Capstick (a1) and A. A. Latif (a1)

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