vector competence of 7 rhipicephalid tick stocks in transmitting 2 theileria parva parasite stocks from kenya and zimbabwe.the competence of 7 different stocks of rhipicephalus appendiculatus and r. zambeziensis to transmit 2 different stocks of theileria parva was compared by feeding nymphae of each tick stock simultaneously on infected cattle and assessing the infections in the salivary glands of the resultant adult ticks. there were significant differences in the patterns of infection of the 2 stocks (t. parva muguga and t. parva boleni) in the different stocks of ticks, and these differences were shown to be rep ...19989651937
diapause induction in adults of three rhipicephalus appendiculatus stocks.newly-moulted adults of three rhipicephalus appendiculatus stocks, originating from kenya, zambia and zimbabwe, were kept in different photoperiods (12h:12h, 13h:11h and 14h:10h light:dark). the stock originating from kenya showed almost no behavioural diapause in any of these day lengths, whereas virtually all individuals of the zimbabwean stock entered a behavioural diapause irrespective of day length. adults from the eastern province of zambia, a transition zone between the multivoltine pheno ...199910737730
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