10 - Theileria spp.

Question 1

(The piroplasms)

1-2. what two species?

Answer 1

1. babesia
2. theileria

Question 2

(Piroplasms)

1. apicomplexans
2. parasites of what (body part)
3. pigment not formed from what?
4. what are usually the definitive host?

Answer 2

2. blood cell
3. host hemoglobin
4. ticks

Question 3

(Significance)

1. babesia caused what?
2. theileria caused what?

Answer 3

1. texas cattle fever
2. east coast fever

Question 4

Answer 4

Question 5

(Babesia)

1. what is the host?
2. what are the definitive hosts?

Answer 5

1. all domestic (intermediate host)
2. hard ticks (ixolid) (definitive host - vector)

Question 6

1. do these have exoerythrocytic schizogony?

Answer 6

no - everything takes place in RBC

Question 7

(Babesia)

(Ticks)

1. ticks grow houw?
2. whats the cycle?

Answer 7

(point of pic is that entire developmental cycle is on one host)

Question 8

What is unique about this tick?

Answer 8

it undergoes transovarian transmission (vertical)

Question 9

(Babesia reproducation)

(transovarial)

1. vertical transmission - uses how many ticks?

(Stage to stage)

2. lateral transmission - uses how many ticks?

Answer 9

1. one
2. 2 and 3

Question 10

what we’re doing here is taking that coccidian life cycle and applying it to a two host system

1. remain in cells of what?
2. enter what in vertebrae?

Answer 10

Question 11

(Babesia spp.)

(Pathogenesis)

1. how pathogenic?

more in young or old?

2. what efect on the body?
3. similar to what in humans?

Answer 11

1. highly

old

Question 12

1. this results in what?

Answer 12

1. severe hypotension in terminal stages of acute Babesia bovis infection

Question 13

(Babesia spp.)

(Immunity)

1. resistance, but only for what?
2. how long are animals that recover infected?
3. what is resistance to reinfection due to an ongoing low level infection is referred to as what?
4. may show signs of disease when stressed

Answer 13

Question 14

(Babesia microti)

1. found in a variety of what?
2. transmistted by what?
3. reported in humans?

Answer 14

Question 15

1. what is different about this?

Answer 15

1. the dog ingests the tick

Question 16

REFER TO A TEACHING HOSPITAL

Question 17

(Theileria spp.)

1. occur in what?
2. hosts?
3. definitive hosts?

(Location)

4. occur where?
5. they have small, round, ovoid, irregular or bacilliform merozoites

Answer 17

4. rbc’s or lymphocytes

Question 18

(Theileria spp.)

(Life cycle)

(vertebrate host)

1. sporozoites enter lymphocytes and begin what?
2. number of schizogenous generations?
3. eventually merozoites enter what?
4. ingested by what?

Answer 18

Question 19

(Theileria spp)

(life cycle)

(invertebrate host)

1. erythrocytic merozoites develop into what?
2. zygote, become motile and end up in what?
3. just prior to tick feeding there is a what?
4. is there transovarian transmssion

Answer 19

Question 20

(Theilleria)

Question 21

(Theileria parva)

1. etiological agent of what?
2. occurs in what cells?
3. transmitted by what?

4.

Answer 21

Question 22

(Cytauxzoon felis)

1. relatively new erythrocyteic piroplasm
2. disease of what?

Answer 22

2. domestic cats