06 - Coccidia

Question 1

Question 2

(Apicomplexa)

1. All are what in terms of host interaction?
2. locomotory?
3. apical complex observed in what?

Answer 2

1. parasitic
2. no locomotory organelles (except for flagellated microgametes - similar in function as sperm)
3. zoites

Question 3

(Apicomplexans)

1-5. what are the five components of the apical complex?

Answer 3

Question 4

(Stages)

(-zoite)

1. shaped like a banana
2. occurs in many forms (merozoite, sporozoite, tachyzoite, bradyzoite)
3. typically are what kind of form?

(-ont)

1. many forms (meront, schizont)
2. usually what kind of strucutures?

(gametocytes)

structures with productes (-gametes) of gamete formation (gemtogony)

Answer 4

3. motile, active form
4. non-motile

Question 5

(Family: Eimeriidae - coccidia)

1. how many hosts?
2. what are the major genera?
3. life cycle has how many stages? where do they occur?

Answer 5

Question 6

(Family: Eimeriidae - coccidia)

1. within host - what types of reproduction?

2-3. What are the two types (plus describe them)

Answer 6

Question 7

(Family: Eimeriidae - coccidia)

(Sporogony - Oocyst)

1. product of what?
2. what can this form do?
3. does what outside host to become infective?
4. Eimeria has how many sporocysts/sporozoites?
5. Isospora has how many sporocysts/sporozoites?

Answer 7

4. 4 sporocysts each with 2 sporozoites
5. 2 sporocysts each with 4 sporozoites

Question 8

Answer 8

Question 9

(Family: Eimeriidae - coccidia)

(Eimeria)

1. how host specific?
2. usually present in what?

(isospora)

1. how host specific?
2. usually present in what?

Answer 9

1. very
2. herbivores
3. less
4. carnivores

Question 10

Answer 10

Question 11

Answer 11

Question 12

Answer 12

Question 13

(Coccidia)

What is the difference between coccidiasis and coccidosis?

Answer 13

Question 14

Answer 14

+ Dispersion (humans, wind, birds, etc)

Question 15

Question 16

Eimeria Tenella is most pathogenic (and the one we are going to spend time on)

Question 17

(Life cycle of Eimeria Tenella)

1. oocyst passed in what?
2. with adequate moisture and temperature will get what?
3. how long can oocyst remain infective?
4. infection is by what?

Answer 17

1. feces
2. oocyst sporogony in 24 - 48 hours
3. 2-3 months
4. ingestion of oocyst

Question 18

Answer 18

Question 19

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Question 20

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Question 21

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Question 22

Question 23

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Question 24

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Question 25

Question 26

most of life cycle takes place where?

Answer 26

lower 1/3 of the si, ceca and rectum

Question 27