Theileria

(redirected from Theileria parva)
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Theileria

A parasitic protozoan.

Theileria

a genus of protozoan parasites in the family Theileriidae. They are transmitted by ticks, multiply in leukocytes and then invade erythrocytes.

Theileria annulata (syn. Theileria dispar)
found in cattle and water buffalo, transmitted by Hyalomma spp. ticks and causes a clinical disease similar to east coast fever.
Theileria buffali
found in cattle and buffalo in Australia and transmitted by Haemaphysalis longicornis and H. bancrofti. Similar to T. mutans. Only sporadic cases of clinical disease and is seen mostly in splenectomized calves.
Theileria camalensis
found in camels, transmission thought to be by Hyalomma spp. ticks.
Theileria cervi
nonpathogenic, found in splenectomized deer.
Theileria dispar
see Theileria annulata (above).
Theileria hirci
found in sheep and goats. Transmitting vector uncertain but probably the tick Rhipicephalus bursa. Causes a disease similar to east coast fever in cattle.
Theileria lawrenci
found in cattle, buffalo and water buffalo. Transmitted by the tick Rhipicephalus appendiculatus; causes fatal corridor disease.
Theileria mutans
found in cattle, transmitted by ticks including Rhipicephalus and Haemaphysalis spp. and causes a benign bovine theileriasis.
Theileria orientalis
usually benign but can cause severe anemia in imported cattle.
Theileria ornithorhynci
found in platypus.
Theileria ovis
found in sheep and goats, transmitted by ticks of the genera Rhipicephalus, Dermacentor, Haemaphysalis and Ornithodoros spp. It causes a mild form of theileriasis.
Theileria parva
found in cattle, African buffalo and Indian water buffalo; transmitted by Rhipicephalus appendiculatus and possibly other ticks. It causes the widespread and serious disease east coast fever.
Theileria sergenti
doubtful identity; mostly benign in cattle.
Theileria tarandi
found in reindeer, transmitted by Ixodes persulcatus and causes an acute disease.
Theileria taurotragi
mildly pathogenic; found in cattle in Africa, Asia.
Theileria velifera
mildly pathogenic; found in cattle.
References in periodicals archive ?
Rhipicephalus zambeziensis can transmit Theileria parva and other Theileria species.
Tick salivary gland extract and interleukin-2 stimulation enhance susceptibility of lymphocytes to infection by Theileria parva sporozoites.
MPSS(TM) will be applied initially to study the life cycle of Theileria parva, an intracellular protozoan parasite responsible for east coast fever, a serious tick-borne cattle disease that transforms bovine lymphocytes to a leukemia-like state.