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VPara Protozoology > General > Flashcards

General Flashcards

1
Q

What is the definitive host for Besnoitia species?

A

cat

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2
Q

animals which can act as intermediate hosts for Besnoitia sp.

A

Horses, ruminants, rodents, and lizards

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3
Q

predilection site for Besnoitia sp. in the intermediate host

A

Connective tissue of skin

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4
Q

How many sporocysts and sporozoites are contained in a cyst of Besnoitia sp.?

A

2 sporocysts, each with 4 sporozoites

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5
Q

In which regions is besnoitiosis endemic?

A

Tropical and sub-tropical regions

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6
Q

Which Besnoitia species causes a serious dermatitis in horses and burros?

A

Besnoitia bennetti

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7
Q

What is a notable symptom of besnoitiosis in horses?

A

Lichenification of the muzzle

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8
Q

Which species of Klosiella is a parasite of the renal epithelium of the horse?

A

Klosiella equi

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9
Q

Which species of Klosiella is found in the renal epithelium of mice?

A

K. muris

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10
Q

What condition was reported by Anderson et al. (1988) in an older, immune-compromised pony infected with Klosiella equi?

A

Tubular necrosis and nonsuppurative interstitial nephritis

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11
Q

How is Mouse Parenteral Coccidia transmitted?

A

Ingestion of sporulated oocysts passed in urine

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12
Q

What is the definitive host for Hammondia sp.?

A

Cat

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13
Q

In which tissues do Hammondia sp. cysts occur in intermediate hosts?

A

Skeletal muscles and brain

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14
Q

What kind of life cycle does Hammondia sp. have?

A

Two-host obligatory life cycle

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15
Q

Which statement about Hammondia sp. is true?

a) Tachyzoites from mouse tissues are infectious to cats
b) Only bradyzoites from mouse tissues are infectious to cats
c) Sporulated oocysts from dog feces are infectious to rats
d) Tachyzoites are the infectious stage for rats

A

Only bradyzoites from mouse tissues are infectious to cats

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16
Q

In which parts of the body does Giardia spp. lodge?

A

intestine

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17
Q

Which animals are commonly infected by Giardia spp.?

A

Man, pig, monkeys

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18
Q

What is the usual clinical presentation of giardiosis or lambliosis?

A

usually symptomless

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19
Q

How many cysts are needed to produce a disease condition in giardiosis?

A

10 cysts

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20
Q

Which age group of animals is more susceptible to Giardia infections?

A

young animals

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21
Q

Which Giardia assemblages are mainly found in humans?

A

Assemblages A and B

22
Q

Which Giardia assemblages are primarily found in dogs?

A

C and D

23
Q

Which Giardia assemblage is typically found in hoofed stock such as cattle, sheep, goats, pigs, and horses?

A

E

24
Q

Which Giardia assemblage consists of the forms found in cats?

A

F

25
Q

What is the shape of Giardia trophozoites?

A

tear drop

26
Q

How many nuclei are present within a Giardia trophozoite?

A

2

27
Q

How do Giardia trophozoites attach to mucosal cells?

A

ventral sucking disk

28
Q

Which form of Giardia is responsible for transmission of giardiasis?

A

cysts

29
Q

Life cycle characteristics of Sarcocystis

A

a. Sexual development on DH
b. Fully sporulated cysts and sporocyts on host’s feces
c. No development in external environment

30
Q

In infective stage of Sarcocystis sp. define development of the organism and in which organ of the DH

A

Sporogony in intestinal mucosae with sporocyts production

31
Q

2 types of sarcocytis sp. infection produced by sarcocyst in the IH

A

a. Intestinal sarcocytosis
b. Muscle sarcocytosis

32
Q

Associated with the release of 2nd way of merozoites

A

a. Sarcosporidiosis in Pigs

33
Q

Etiologic agent of neurological disease of Equine Protozoal Encephalomyelitis

A

Sarcocystic neuorona

34
Q

Final host of Sarcocystis cruzi

A

dogs

35
Q

How to diagnose sarcocystis infection

A

a. Finding sarcocysts in muscle tissues
b. Finding spores in ground muscles
c. Finding sporocyts/sporulated oocyts in the feces of carnivores

36
Q

A heteroxynous parasite with its predilection site is CT of the skin

A

Besnoitia sp.

37
Q

Cutaneous form in horses and burros characterized by widespread, serious dermatitis in tropical and subtropical countries

A

Besnoitiosis in horses

38
Q

Etiologic agent of Besnoitiosis in horses

A

Besnoitia bennetti

39
Q

Oval or elliptical parasite render the cell elongated and bizarre in appearance as the parasite grows

A

Leucocytozoon

40
Q

first pathogenic protozoan (1893) shown to be transmitted by an arthropod vector

A

babesia bigemina

41
Q

parasite of the RBC transmitted by ticks

A

babesia

42
Q

most common rickettsial species involved in ehrlichiosis in dogs

A

ehrlichia canis

43
Q

Susceptibility increases with age and recovered animals are carriers for life

A

Anaplasma

44
Q

May be transmitted by use of contaminated surgical instruments

A

anaplasma

45
Q

Sporadic but rapidly and uniformly fatal disease of domestic cats in the south central US

A

Cytauxzoon felis

46
Q

One of the most important bovine hemotropic diseases in the tropics and subtropics

A

aMaltese cross type intraerythrocytic organism

47
Q

parasites cause extensive intravascular haemolysis (erythrocyte rupture) producing progressive signs of anaemia

A

Babesia

48
Q

What is the importance of animal reservoirs in the transmission of Giardia to humans?

A

They occasionally contribute to human infections

49
Q

What can trigger encystation of Giardia trophozoites?

A

moving toward the colon

50
Q

What stage of Giardia is most commonly found in nondiarrheal feces?

A

cysts

51
Q

In which part of the intestine do Giardia trophozoites primarily reside?

A

small intestine

VPara Protozoology (12 decks)

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