Theileria

Question 1

Main species of Theileria: (4)

Answer 1

• Theileria parva parva = East coast fever
• Theileria parva bovis = January disease
• Theileria parva lawrencei = Corridor disease
• Theileria annulata = Medeteranean cost fever

Question 2

What type of parasite is Theileria:

Answer 2

Intracellular - Lymphocytes

Question 3

What is the Final host of Theileria:

Answer 3

Vector: Ticks
-Rhipicephalus
-Appendiculatus
-Hyalomma

!Only trans-stage transmission!

Question 4

What is the Intermediate host of Theileria:

Answer 4

Ruminants

Question 5

Describe Life cycle of Theileria:

Answer 5

In Intermediate host
1. Tick bite releases Sporozoites during feeding, they attach to the lymphocyte
2. Sporozoite enter via zippering mechanism, mature schizont in transformed lymphocyte proliferate
3. Merogony occurs releasing Merozoites into blood plasma

In Final host
1. Larvae and nymphs acquire infection
2. Gametes>Zygote>Kinete>Sporogony