Browsing Faculty of Science & Technology (FST) by Author "Young, A. S"
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Comparison of the transmission of Theileria parva between different instars of Rhipicephalus appendiculatus
Ochanda, H; Young, A. S; Wells, C; Medley, G. F; Perry, B. D (1996)The transmission of Theileria parva by nymphal and adult Rhipicephalus appendiculatus was compared by the assessment of salivary gland infections in tick batches fed on the same group of infected cattle at the same time. ... -
The effect of temperature on the rate of transmission of Theileria parva parva infection to cattle by its tick vector, Rhipicephalus appendiculatus
Ochanda, H; Young, A. S; Mutugi, J. J; Mumo, J; Omwoyo, P. L (1988)A steer was infected with Theileria parva parva Kilae stabilate; nymphal Rhipicephalus appendiculatus ticks were applied to its ears so that they completed repletion when the steer had a high piroplasm parasitaemia. The ... -
Estimation of heritability of susceptibility to infection with Theileria parva in the tick Rhipicephalus appendiculatus
Young, A. S; Dolan, T. T; Mwakima FN, S. N Ochanda H, Mwaura; Njihia, G. M; Muthoni, M. W; Dolan, R. B (1995)Heritability of susceptibility to infection with Theileria parva was estimated from full sib families of Rhipicephalus appendiculatus ticks. Male and female ticks of 2 stocks were mated singly. Nineteen full sib families ... -
Survival of Theileria parva in its nymphal tick vector, Rhipicephalus appendiculatus, under laboratory and quasi natural conditions
Ochanda, H; Young, A. S; Medley, G. F (2003)Groups of nymphal Rhipicephalus appendiculatus Muguga, having a mean of 1 or 9 Theileria parva Muguga-infected salivary gland acini per tick, were kept under quasi-natural conditions at an altitude of 1950 m or 20 degrees ... -
Survival of Theileria parva-infected adult Rhipicephalus appendiculatus under laboratory and quasi-natural conditions
Ochanda, H; Young, A. S (Department of Zoology, University of Nairobi, Kenya., 2003)Adult Rhipicephalus appendiculatus Muguga, having high or low intensities of Theileria parva Muguga infection in their salivary glands, were exposed to 20 degrees C and 85% relative humidity in the laboratory or quasi-natural ... -
Vector competence of 7 rhipicephalid tick stocks in transmitting 2 Theileria parva parasite stocks from Kenya and Zimbabwe
Ochanda, H; Young, A. S; Medley, G. F; Perry, B. D (1998)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 ...