Ochanda, Horace, Young, A. S. and Medley, Graham (2003) Survival of Theileria parva in its nymphal tick vector Rhipicephalus appendiculatus under laboratory and quasi natural conditions. Parasitology , Vol.12 (No.6). pp. 571-576. doi:10.1017/S0031182003003147 ISSN 0031-1820.

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Abstract

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°C at a relative humidity of 85% in the laboratory and their survival and infection prevalence and abundance determined over time. Theileria parva infections for both categories of ticks survived in the nymphal ticks for 50 or 26 weeks post salivary gland infection under quasi-natural or laboratory conditions respectively. There was a distinct decline in infections in the more heavily infected nymphae under both conditions of exposure, reflecting an apparent density dependence in parasite survival. Nymphal ticks having an average infection level of 1 infected salivary gland acinus per tick, survived for up to 69 or 65 weeks post-repletion under quasi-natural or the laboratory conditions respectively. Nymphae having an average infection level of 9 infected salivary gland acini per tick survived for a similar duration under each of the 2 conditions. The infection level of 9 infected salivary gland acini per tick did not seem to significantly affect the survival of the tick vector compared to those having an average of 1 infected salivary gland acinus per tick.

Item Type:	Journal Article
Subjects:	S Agriculture > SF Animal culture Q Science > QR Microbiology
Divisions:	Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) > Biological Sciences ( -2010)
Library of Congress Subject Headings (LCSH):	Theileria parva, Rhipicephalus appendiculatus, East Coast fever, Cattle -- Infections -- Reasearch -- Africa, Cattle -- Parasites -- Life cycles
Journal or Publication Title:	Parasitology
Publisher:	Cambridge University Press
ISSN:	0031-1820
Official Date:	June 2003
Dates:	Date Event June 2003 Published
Volume:	Vol.12
Number:	No.6
Page Range:	pp. 571-576
DOI:	10.1017/S0031182003003147
Status:	Peer Reviewed
Access rights to Published version:	Open Access (Creative Commons)

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