10 - Theileria spp. Flashcards
(The piroplasms)
1-2. what two species?
- babesia
- theileria
(Piroplasms)
- apicomplexans
- parasites of what (body part)
- pigment not formed from what?
- what are usually the definitive host?

- blood cell
- host hemoglobin
- ticks
(Significance)
- babesia caused what?
- theileria caused what?
- texas cattle fever
- east coast fever



(Babesia)
- what is the host?
- what are the definitive hosts?
- all domestic (intermediate host)
- hard ticks (ixolid) (definitive host - vector)

1. do these have exoerythrocytic schizogony?

no - everything takes place in RBC
(Babesia)
(Ticks)
- ticks grow houw?
- whats the cycle?
(point of pic is that entire developmental cycle is on one host)

What is unique about this tick?

it undergoes transovarian transmission (vertical)
(Babesia reproducation)
(transovarial)
- vertical transmission - uses how many ticks?
(Stage to stage)
- lateral transmission - uses how many ticks?
- one
- 2 and 3
what we’re doing here is taking that coccidian life cycle and applying it to a two host system
- remain in cells of what?
- enter what in vertebrae?


(Babesia spp.)
(Pathogenesis)
- how pathogenic?
more in young or old?
- what efect on the body?
- similar to what in humans?
- highly
old

- this results in what?

- severe hypotension in terminal stages of acute Babesia bovis infection

(Babesia spp.)
(Immunity)
- resistance, but only for what?
- how long are animals that recover infected?
- what is resistance to reinfection due to an ongoing low level infection is referred to as what?
- may show signs of disease when stressed

(Babesia microti)
- found in a variety of what?
- transmistted by what?
- reported in humans?

- what is different about this?

- the dog ingests the tick

REFER TO A TEACHING HOSPITAL

(Theileria spp.)
- occur in what?
- hosts?
- definitive hosts?
(Location)
- occur where?
- they have small, round, ovoid, irregular or bacilliform merozoites
- rbc’s or lymphocytes

(Theileria spp.)
(Life cycle)
(vertebrate host)
- sporozoites enter lymphocytes and begin what?
- number of schizogenous generations?
- eventually merozoites enter what?
- ingested by what?

(Theileria spp)
(life cycle)
(invertebrate host)
- erythrocytic merozoites develop into what?
- zygote, become motile and end up in what?
- just prior to tick feeding there is a what?
- is there transovarian transmssion

(Theilleria)

(Theileria parva)
- etiological agent of what?
- occurs in what cells?
- transmitted by what?
4.

(Cytauxzoon felis)
- relatively new erythrocyteic piroplasm
- disease of what?
- domestic cats
