Cystoisospora spp.

Question 1

Name a Coccidial Protozoan that affects the GI tract of small animals

Answer 1

Cystoisospora spp.

Question 2

Cystoisospora spp. causes cellular destruction in what part of its host?

Answer 2

Small Intestines

Question 3

Name the 5 forms of Cystoisospora in the order that they occur in the Life Cycle

Answer 3

1. Oocyst
2. Sporozoites
3. Merozoites
4. Gametes
5. Zygote (produces more Oocysts)

Question 4

Which Cystoisospora form/stage reproduces Asexually within the cells of the small intestine?

Answer 4

Sporozoites (produces Merozoites)

Question 5

Which Cystoisospora form/stage develops into Gametes?

Answer 5

Merozoites

Question 6

Which gamete is male?

Answer 6

Microgamete

Question 7

Which gamete is female?

Answer 7

Macrogamete

Question 8

How are Cystoisosporo diagnosed?

Answer 8

Fecal Flotation / Centrifugation
(Iodine / New Methylene blue)

Question 9

When Oocysts are first passed they are Unsporulated. How many days pass before the oocysts are Sporulated (contain sporozoites)?

Answer 9

2-3 days

Question 10

After Merozoites develop into gametes (micro and macro), these gametes fuse together and a cyst wall forms around them. It is then called a what?

Answer 10

Zygote