Lab 5 - Cryptosporidiosis, toxoplasmosis, besnoitiosis of cattle, sarcocystiosis (T)

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

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

Answer 3

Sporocysts

Question 4

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

Answer 4

Subclinical

Question 5

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

Answer 5

Cystozoites

Question 6

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

Answer 6

Cystozoites

Question 7

Muscle sarcosporidiosis can be found in?

Answer 7

Sheep, cattle, sheep, swine, horse and rabbit

Question 8

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

Answer 8

S. gigantea (in sheep)

Question 9

Intestinal Sarcosporidiosis can occur in?

Answer 9

Dog, cat, wild carnivores and man

Question 10

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

Answer 10

Groups of merozoites or small schizonts

Question 11

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

Answer 11

S. gigantea

Question 12

What is the Sarcocystiosis species of cattle among these following ones?

Answer 12

S. hirsuta

Question 13

What type of Sarcocystis oocyst can be found in fresh faeces?

Answer 13

Sporulated

Question 14

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

Answer 14

Final hosts – dog, cat, wild carnivores and man

Question 15

Which statement is not true for Besnoitia besnoiti?

Answer 15

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 16

Besnoitia besnoiti species are?

Answer 16

Obligatory heteroxenous

Question 17

What animals are susceptible for Besnoitia besnoiti?

Answer 17

More ssp. of ruminants

Question 18

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

Answer 18

Itching

Question 19

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

Answer 19

Sabin-Feldman dye test

Question 20

Which genus has sporulated oocysts without sporocysts?

Answer 20

Cryptosporidium

Question 21

What are the characteristics of Cryptosporidium meleagridis oocysts?

Answer 21

5 μm, spherical

Question 22

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

Answer 22

CNS symptoms (along with anorexia, pneumonia and diarrhea)

Question 23

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

Answer 23

Rabbit

Question 24

What is the size of Toxoplasma gondii cyst?

Answer 24

20-100 micrometers

Question 25

What is the size of Toxoplasma cyst that contains tachyzoites?

Answer 25

20-100 μm

Question 26

Oocyst of Toxoplasma gondii is indistinguishable from that of?

Answer 26

Hammondia hammondi

Question 27

What is the patency period for Toxoplasmosis?

Answer 27

20 days

Question 28

What can be found in sporulated oocysts of Toxoplasmosis?

Answer 28

2 sporocysts each containing 4 sporozoites

Question 29

Which animals shed oocysts in Toxoplasmosis?

Answer 29

All species of cats as the definitive/final host

Question 30

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

Answer 30

1-2 weeks

Question 31

What kind of host is the cat in Toxoplasma gondii?

Answer 31

Final Host/Definitive host

Question 32

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

Answer 32

Cats (maximum 20 days/only for 1-2 weeks)

Question 33

How can we characterize the life cycle of Toxoplasma gondii?

Answer 33

Facultative heteroxenous

Question 34

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

Answer 34

Yellowish/white necrotic spots

Question 35

Which species does not abort when infected with Toxoplasmosis?

Answer 35

Cat

Question 36

Which form is not characteristic of avian?

Answer 36

``` Cryptosporidiosis? Hepatic form (cryptosporidiosis has intestinal, respiratory and renal form) ```

Question 37

Which symptom does not occur during Toxoplasmosis infection in cats?

Answer 37

Abortion

Question 38

Which is not true?

Answer 38

Toxoplasma oocysts are 5-8 μm (they are 10x12 μm, cryptosporidium oocysts are 5-8μm)

Question 39

Host range of Toxoplasmosis?

Answer 39

Cats, dogs, birds and humans and other mammals

Question 40

How many sporocysts do the Toxoplasma oocysts have?

Answer 40

Two

Question 41

Which animal species can be infected by Toxoplasma gondii?

Answer 41

Many mammals and birds

Question 42

In which location will Cryptosporidium baileyi not establish?

Answer 42

Stomach

Question 43

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

Answer 43

Respiratory

Question 44

Which one of the following methods is perfect to stain Cryptosporidium oocysts?

Answer 44

Kinyoun-staining

Question 45

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

Answer 45

With flotation

Question 46

What form of Cryptosporidium can be found in fresh faeces?

Answer 46

Oocysts containing 4 sporozoites

Question 47

What are the characteristics of Cryptosporidium baileyi oocysts?

Answer 47

6-7 μm, oval

Question 48

What are the clinical signs for C. baileyi?

Answer 48

Dyspnea and diarrhoea (also: coughing, sneezing, nasal discharges and conjunctivitis)

Question 49

Which parasite are homoxenous but not host specific?

Answer 49

Cryptosporidium parvum

Question 50

What is the causative agent of Cryptosporidiosis in mammals?

Answer 50

C. muris (and C. parvum, C. andersoni and C. bovis, C. felis, C. canis and C. hominis)

Question 51

Which bird species are susceptible for C. bailyei infection?

Answer 51

Many species (especially young chickens)

Question 52

Where is Cryptosporidium mainly found?

Answer 52

Small intestine (Ileum) or abomasum in case of C. muris and C. andersoni

Question 53

Which species of Cryptosporidium occurs in birds?

Answer 53

C. baileyi (or C. galli or C. meleagridis)

Question 54

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

Answer 54

Brain (organs affected: respiratory system, small and large intestine, cloaca and bursa Fabricius and rarely in kidneys)

Question 55

What do the oocysts of Cryptosporidia contain?

Answer 55

4 sporozoites (no sporocysts)

Question 56

Which is the method used to detect Cryptosporidium?

Answer 56

Kinyoun staining (also Ziehl-Neelsen, Safranin-methylene blue staining and Giemsa)

Question 57

Life Cycle of Cryptosporidia parvum?

Answer 57

Homoxenous (via air/water/dust)

Question 58

Host range of Cryptosporidium baileyi?

Answer 58

Anseriform

Question 59

How can we characterize the host specificity of Cryptosporidia baileyi?

Answer 59

Euryxenous

Question 60

Host range of Cryptosporidiosis?

Answer 60

Euryxenous (mammals and birds)