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Para lab 5 > Para lab 5 > Flashcards

Para lab 5 Flashcards

1
Q

What is the size of a Cryptosporiudium oocyst?

A

5-8 microns

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2
Q

Which genus has sporulated oocysts with 4 free sporozoites

A

Cryptosporidium

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3
Q

Which genus has sporulated oocysts without sporocytes?

A

Cryptosporidium

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4
Q

What are the characteristics of cryptosporidium meleagridis oocysts?

A

5 um, spherical

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5
Q

Which form is not characteristic of avian Cryptosporidiosis?

A

Hepatic fprm (cyptosporidiosis has intestinal respiratory and renal form)

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6
Q

Host range of cryptosporidiosis?

A

Euryxenous

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7
Q

Host range of Cryptosporidium baileyi?

A

Anseriform

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8
Q

Life cycle of cryptosporidia parvum

A

Homoxenous (via air/water/ dust)

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9
Q

Which is the method used to detect Cryptosporidium?

A

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

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10
Q

What do the oocysts of cryptosporidia contain?

A

4 sporozoites (no sporocysts)

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11
Q

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

A

Brain (organ affected -> respiratory system, small and large intestine, cloaca and bursa Fabricius and rarely in kidneys)

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12
Q

Which species of cryptosporidium occurs in birds?

A

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

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13
Q

Where is cryptosporidium mainly found?

A

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

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14
Q

Which bird species are susceptible for C.bailyei infection?

A

Many species especially young chickens

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15
Q

What is the causative agent of cryptosporidiosis in mammals?

A

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

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16
Q

Which parasite are homoxenous but not host specific?

A

Cryptosporidium parvum

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17
Q

What are the clinical signs for C.baileyi?

A

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

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18
Q

What are the characteristics of Cryptosporidium baileyi oocysts?

A

6-7um, oval

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19
Q

What form of cryptosporidium can be found in fresh faeces?

A

Oocysts containing 4 sporozoites

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20
Q

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

A

with flotation

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21
Q

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

A

Respiratory

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22
Q

In which location will Cryptosporidium baiileyi not establish?

A

Stomach

23
Q

Which animal species can be infected by toxaplasma gondii?

A

many mammals and birds

24
Q

How many sporocysts do the Toxoplasma oocysts have?

A

two

25
Q

Which is not true?

A

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

26
Q

Host range of toxoplasmosis

A

Cats, dogs, birds and humans and other mammals

27
Q

Which symptom does not occur during toxoplasmosis infection in cats?

A

Abortion

28
Q

Which species does not abort when infected with toxoplasmosis?

A

Cat

29
Q

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

A

Yellowish/ white necrotic spots

30
Q

How can we characterize the life cycle of Toxoplasma gondii?

A

Facultative heteroxenous

31
Q

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

A

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

32
Q

What kind of host is the cat in toxoplasma gondii?

A

Final host/ Definitive host

33
Q

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

A

1-2 weeks

34
Q

Which animal shed oocysts in Toxoplasmosis?

A

All species of cats as the definite/final host

35
Q

What can be found in sporulated oocysts of Toxoplasmosis?

A

2 sporocysts each containing 4 sporozoites

36
Q

What is the patency period for Toxoplasmosis?

A

20 days

37
Q

Oocyst of Toxoplasma gondii is indistinguishabe from that of?

A

Hammondia hammondi

38
Q

What is the size of Toxoplasma cyst that contains tachyzoites?

A

20-100 micrometers

39
Q

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

A

Rabbit

40
Q

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

A

CNS symptoms (along with anorexia, pneumonia and diarrhea)

41
Q

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

A

Sabin-Feldman dye test

42
Q

What animals are susceptible for Besnoita besnoiti?

A

Most species of Ru

43
Q

Besnoita besnoiti species are - lifecycle?

A

Obligatory heteroxenous

44
Q

Which statement is not true about Besnoita besnoiti?

A

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

45
Q

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

A

Final hosts - dog, cat, wild, carnivores and man

46
Q

What is the Sarcocystiosis species of cattle among these?

A

S.hirsuta, S.equicanis, S.gigantea

47
Q

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

A

Groups of merozoites or small schizonts

48
Q

Itestinal Sarcosporidiosis can occur in?

A

Dog, cat, wild carnivores and man

49
Q

What pea sized and greyish yellow sporocysts are found in the wall of the eosophagus?

A

S.gigantea (in sheep)

50
Q

Muscle sarcosporidiosis can be found in?

A

Sheep, cattle, swine, horse and rabbit

51
Q

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

A

Cystozoites

52
Q

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

A

Subclincal

53
Q

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

A

Sporocysts

Para lab 5 (1 decks)

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