08 - Sarcocystis

Question 1

1. how many hosts does this require?

Answer 1

1. obligatory 2 host system - heteroxenous (everything else we have talked about has been one host so far)

Question 2

1. What species do they infect?
2. what kind of relastionhship?
3. one of the most prevalent parasites of what?

Answer 2

Question 3

1. what is the definitve host?
2. the intermediate?

Answer 3

Question 4

just slightly different from cycles before

1. how many sporocysts/sporozoites?
2. oocysts wall is fragile -> may lead to what?

Answer 4

1. 2 sporocysts/4 sporozoites each
2. may break –> sporocysts shed in feces

Question 5

Answer 5

Question 6

these cause tissue cysts

Question 7

(Intermediate hosts)

1. cattle serves as what?

(give the definitive host)

2. S. cruzi
3. S. hirsuta
4. S. hominis

Answer 7

1. intermediate host
2. canids
3. felids
4. primates

Question 8

if it isn’t abortion usually goes unnoticed

Question 9

don’t memorize all of these different types

Question 10

what treaments used in practice?

Answer 10

Question 11

(Sarcocystis Neurona)

1. cause of what?
2. Slowly progressive, focal or multifocal CNS disease…. can death result?

Answer 11

1. equine protozoal myeloencephalitis (EPM)
2. yes it can

Question 12

1. what is the definitive host?
2. Intermediate?
3. accidental intermediate?

Answer 12

Question 13

What are the three A’s (clinical signs)

Answer 13

1. asymmetric ataxia
2. focal muscle atrophy

Question 14

Answer 14

Question 15

Answer 15