Lab test 4

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 characteristcs of cryptosporidium megeagridis oocysts?

Answer 4

5 micrometer, spherical

Question 5

which form is not characteristic of avian cryptosporidiosis?

Answer 5

hepatic form (crytosporidiosis has intestinal, respiratory and renal form)

Question 6

host range of cryptospriodiosis?

Answer 6

euryxenous (mammals and birds)

Question 7

how can we characterize the host specificity of cryptosporidia balley?

Answer 7

euryxenous

Question 8

host range of cryptosporidium baileyi?

Answer 8

anseriform

Question 9

life cycle of cryptosporidia parvum?

Answer 9

homoxenous (via air/water/dust)

Question 10

which is the method used to detect cryptosporidium?

Answer 10

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

Question 11

what do the oocyst of cryptosporidia contain?

Answer 11

4 sporozoites (no sporocysts)

Question 12

what organ is not involved during a C. balleyi infection in poultry?

Answer 12

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

Question 13

which species of cryptosporidium 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 in case of C. muris and C. andersoni

Question 15

which bird species are suseptible for C. balleyi infection=

Answer 15

many species (especially young chickens)

Question 16

what is the causative agent of cryptosporidiosis in mammals?

Answer 16

C. muris (and C. parvum, C. andersoni and 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. baileyi?

Answer 18

Dyspnea and diarrhoea (also coughing, sneezing, nasal discharge and conjunctivitis)

Question 19

what are the characteristics of cryptosporidium baileyi oocysts?

Answer 19

6-7 micrometer, 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 method

Question 22

which one of the following methods is perfect to stain cryptosporidium oocysts?

Answer 22

kinyoun-staining

Question 23

which form of cryptosporidiosis has the most severe outcome in broilers?

Answer 23

respiratory

Question 24

in which location will cryptosporidium baileyi not establish

Answer 24

stomach

Question 25

which animal species can be infected by toxoplasma gondii?

Answer 25

many mammals and birds

Question 26

how many sporocysts do the toxoplasma oocysts have?

Answer 26

two

Question 27

which is not true?

Answer 27

toxoplasma oocysts are 5-8 micrometer (they are 10x12 micrometer, cryptosporidium oocysts are 5-8 micrometer)

Question 28

host range of toxoplasmosis?

Answer 28

Cats, dogs, birds and humans and other mammals

Question 29

which symptoms does not occur during toxoplasmosis infection in cats?

Answer 29

abortion

Question 30

which species does not abort when infected with toxoplasmosis

Answer 30

cat

Question 31

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

Answer 31

yellowish/white necrotic spots

Question 32

how can we characterize the life cycle of toxoplasma gondii?

Answer 32

facultative heteroxenous

Question 33

in which animal can we find toxoplasma oocysts in the faeces?

Answer 33

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

Question 34

what kind of host is the cat in toxoplasma gondii?

Answer 34

final host/definitive host

Question 35

for how long does a cat pass toxoplasma oocysts in the faeces?

Answer 35

1-2 weeks

Question 36

which animal shed oocysts in toxoplasmosis?

Answer 36

all species of cats as the definitive host

Question 37

what can be found in sporulated oocysts of toxoplasmosis?

Answer 37

2 sporocysts each containing 4 sporozoites

Question 38

what is the patency period for toxoplasmosis?

Answer 38

20 days

Question 39

oocyst of toxoplasma gondii is indistinguishable from that of?

Answer 39

Hammondia hammondi

Question 40

what is the size of toxoplasma cyst that contains tachyzoites?

Answer 40

20-100 micrometer

Question 41

what is the size of toxoplasma gondii cyst

Answer 41

20-100 micrometer

Question 42

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

Answer 42

Rabbit

Question 43

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

Answer 43

CNS symptoms (along with anorexia, pneumonia and diarrhoea)

Question 44

what method is not used to detect toxoplasma tachyzoites during infection?

Answer 44

Sabin-feldman dye test

Question 45

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

Answer 45

itching

Question 46

what animals are susceptible for Besnoitia besnoiti?

Answer 46

more ssp. of ruminants

Question 47

besnoitia besnoiti species are?

Answer 47

obligatory heteroxenous

Question 48

which statement is not frue for besnoitia besnoiti?

Answer 48

it is 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 49

whay type of sarcocystis oocyst can be found in fresh faeces?

Answer 49

sporulated

Question 50

what type of host of sacrocystiosis can give the intestinal form of infection?

Answer 50

final hosts - dog, cat, wild carnivores and man

Question 51

what is the sarcocystiosis species of cattle among these following ones?

Answer 51

S. hirsuta

Question 52

what is the sacrocystiosis species of sheep among these following ones?

Answer 52

S. gigantea

Question 53

what can be found in sections of vascular endothelium of the heart, kidney etc. in sarcosporiodiosis?

Answer 53

Groups of merozoites or small schizonts

Question 54

intestinal sarcosporiodiosis can occur in?

Answer 54

dog, cat, wild carnivores and man

Question 55

wheat-pea sized and greyish-yellow sarcocysts of .... are found in the wall of the esophagus?

Answer 55

S. gigantea (in sheep)

Question 56

muscle sarcosporidiosis can be found in?

Answer 56

sheep, cattle, swine, horse and rabbit

Question 57

wht does the human need to ingest to get infected with sarcocystiosis?

Answer 57

cystozoites

Question 58

what is the most frequent clinical form of sarcocystiosis of the dog?

Answer 58

subclinical

Question 59

what can we usually detect in the faeces during sarcocystiosis in definite host/final host?

Answer 59

sporocysts