Lab 5

Question 1

What is the size of a Cryptosporidium oocyst?

Answer 1

5 - 8 microns.

Question 2

Which genus has sporulated oocysts with 4 free sporozoites?

Answer 2

Cryptosporidium.

Question 3

Which genus has sporulated oocysts without sporocysts?

Answer 3

Cryptosporidium.

Question 4

What are the characteristics of Cryptosporidium meleagridis oocysts?

Answer 4

5µm, spherical.

Question 5

Which form is not characteristic of avian Cryptosporidiosis?

Answer 5

Hepatic form.

Question 6

Host range of Cryptosporidiosis?

Answer 6

Euryxenous.

Question 7

How can we charaterize the host specificity of Cryptosporidia balleyi?

Answer 7

Euryxenous.

Question 8

Host range of Cryptosporidium balleyi?

Answer 8

Anseriform.

Question 9

Life cycle of Cryptosporidia parvum?

Answer 9

Homoxenous.

Question 10

Which is the method used to detect Cryptosporidium?

Answer 10

Kinyoun staining.

Question 11

What do oocysts of Cryptosporidia contain?

Answer 11

4 sporozoites.

Question 12

What organ is not involved during a C. balleyi infection of poultry?

Answer 12

Brain.

Question 13

Which sp. of Cryptosporidum occurs in birds?

Answer 13

C.balleyi. or C.galli or C.meleagridis.

Question 14

Where is Cryptosporidium mainly found?

Answer 14

Small intestine ( ileum) or abomasum.

Question 15

Which bird sp are susceptible for C.balleyi infection?

Answer 15

Many sp ( chicken).

Question 16

What is the causative agent of Cryptosporidiosis in mammals?

Answer 16

C.muris + C parvum, C andersoni + C.bovis, C.felis, C.canis and C.hominis.

Question 17

Which parasite are homoxenous but not host specific?

Answer 17

Cryptosporidium parvum.

Question 18

What are the clinical signs for C.balleyi?

Answer 18

Dyspnea and diarrhea, coughing, sneezing, nasal discharges and conjunctivitis.

Question 19

What are the characteristics of Cryptosporidium balleyi oocysts?

Answer 19

6- 8 µm, oval.

Question 20

What form of Cryptosporidium can be found in fresh faeces?

Answer 20

Oocysts containing 4 sporozoites.

Question 21

How do we detect usually the oocysts of Cryptosporidia in faeces?

Answer 21

With flotation.

Question 22

What form of Cryptosporidiosis has the most severe outcome in broilers?

Answer 22

Respiratory.

Question 23

In which location will Cryptosporidium balleyi not establish?

Answer 23

Stomach.

Question 24

Which animal sp can be infected by Toxoplasma gondii?

Answer 24

Many mammals and birds.

Question 25

How many sporocysts do the Toxoplasma oocysts have?

Answer 25

2.

Question 26

Which is true?

Answer 26

Toxoplasma oocysts are 5- 8 µm.

Question 27

Host range of Toxoplasmosis?

Answer 27

Cats, dogs, birds, humans and other mammals.

Question 28

Which symptom does not occur during Toxoplasmosis infection in cats?

Answer 28

Abortion.

Question 29

What can we find on the surface of the placenta, as a consequence of Toxoplasma infectiton in sheep and goat?

Answer 29

Yellowish/White necrotic spots.

Question 30

How can we characterize the life cycle of Toxoplasma gondii?

Answer 30

Facultative heteroxenous.

Question 31

In which animal can we find Toxoplasma oocysts in the faeces?

Answer 31

Cats.

Question 32

What kind of host is the cat in Toxoplasma gondii?

Answer 32

Final host/Definitive host.

Question 33

For how long does a cat pass Toxoplasma oocysts in the faeces?

Answer 33

1- 2 weeks.

Question 34

Which animals shed oocysts in Toxoplasmosis?

Answer 34

All sp. of cats as the definitive/final host.

Question 35

What can be found in sporulated oocyts of Toxoplasmosis?

Answer 35

2 sporocysts each containing 4 sporozoites.

Question 36

What is the patency period for Toxoplasmosis?

Answer 36

20 days.

Question 37

Oocyst of Toxoplasma gondii is indistinguishable from that of?

Answer 37

Hammondia hammondi.

Question 38

What is the size of Toxoplasma cyst that contains tachyzoites?

Answer 38

20-100µm.

Question 39

In which sp. does T.gondii cause necrotic foci and granuloma in liver, spleen, lungs and brain?

Answer 39

Rabbit.

Question 40

Which clinical sign can be seen in dogs infected by toxoplasma?

Answer 40

CNS symptoms, with anorexia, pneumonia and diarrhoea.

Question 41

What method is not used to detect Toxoplasma tachyzoites during infection?

Answer 41

Sabin-Feldman dye test.

Question 42

What is the sign that does not appear in the chronic form of Besnoitiosis?

Answer 42

Itching.

Question 43

What animals are susceptible for Besnoitia besnoiti?

Answer 43

More ssp of Ru.

Question 44

Besnoitia Besnoiti sp are?

Answer 44

Obligatory heteroxenous.

Question 45

Which statement is not true for Besnoitia Besnoiti?

Answer 45

It's most important intermediate host is the cat. It can be transmitted by vectors, the cyst is visible to the naked eye, develops in the endothel.

Question 46

What type of Sarcocystis oocyst can be foundin fresh faeces?

Answer 46

Sporulated.

Question 47

What type of host of Sarcocystiosis can give the intestinal form of infection?

Answer 47

Final hosts- dog, cat, wild Car and man.

Question 48

What is the Sarcocystiosis sp of cattle among these following oness?

Answer 48

S.hirsuta.

Question 49

What is the Sacrocystiosis sp of sheep among these following ones?

Answer 49

S.gigantea.

Question 50

What can be found in sections of vascular endothelium of heart, kidney,.. In Sarcosporidiosis?

Answer 50

Grps of merozoites or small schizonts.

Question 51

Wheat-pea sized and greyish-yellow sarcocysts of are found in the wall of oesophagus?

Answer 51

S.gigantea ( in sheep).

Question 52

M. Sarcosporidiosis can be found in?

Answer 52

Sheep, cattle, swine, horse, rabbit.

Question 53

What does the human need to ingest to get infected with Sarcocystiosis?

Answer 53

Cystozoites.

Question 54

What is the most frequent clinical form of Sarcocystiosis of dog?

Answer 54

Subclinical.

Question 55

What can we usually detect in the faeces during Sarcocystiosis in definite host/final host?

Answer 55

Sporocysts.