University of Khartoum

Studies on Haemaphysalis Spinulosa Neumann, 1906 and Rhipicephalus Simus Koch, 1844 (Ixodoidea, Ixodidae

Studies on Haemaphysalis Spinulosa Neumann, 1906 and Rhipicephalus Simus Koch, 1844 (Ixodoidea, Ixodidae

Show full item record

Title: Studies on Haemaphysalis Spinulosa Neumann, 1906 and Rhipicephalus Simus Koch, 1844 (Ixodoidea, Ixodidae
Author: Bedawi El Sheikh Mustafa, Mustafa
Abstract: Haemaphysalis spinulosa was thoroughly studied in this thesis. The immature stages of the tick were collected from Nile rats around Shambat Campus of the University of Khartoum where it co-exists with R. simus. The host range of the two tick species was determined together with studies on their life cycles in the field and in the laboratory under different temperature and humidity regimes. The study represents the first ever study on the life cycle of H. spinulosa whose immature stages were described for the first time. Similar to R. simus, H. spinulosa was found to be a 3-host tick species with a similar life cycle pattern. Variations in the temperature affected development periods of both tick species. Higher temperature accelerated development while lower one retarded it. R. simus could withstand lower temperature levels better than H. spinulosa whose engorged nymphs went into a period of inactivity when subjected to lower temperature. The humidity seems to have no effect on the development of both ticks but drastically affected survival of eggs and unfed stages. More than one generation of both ticks occur within a year with high infestation in February. Nile rats are the hosts of choice of the immature stages while goats are favoured by adult R. simus (first ever report). Adults of H. spinulosa were only collected from hedgehogs, but their host preference needs further investigations. All stages of both ticks were successfully reared on rabbits in the laboratory.
URI: http://khartoumspace.uofk.edu/handle/123456789/14380
Date: 2015-06-23


Files in this item

Files Size Format View

This item appears in the following Collection(s)

Show full item record

Share

Search DSpace


Browse

My Account