Deck 6 Flashcards

1
Q

What is the location of Histomonas meleagridis?

A

liver, ceca

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the species responsible for East Coast Fever?

A

T. parva

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the life cycle of plasmodium

A

o Human liver stage
Female mosquito inject parasite -> sporozoites into host after blood meal -> sporozoits reach the liver and invade hepatocytes, the mature to schizonts -> schizont rupture and release merozoites
o Human blood stage
-> erythrocytic Merozoites leave the liver and incade erythrocytes in which they reproduce and dvp into trophozoites (ring-stage) -> trophozoites mature into schizonts and rupture to release merozoites -> then some differentiate into gametocytes
o Mosquito stage
-> sporogonic cycle 48 Gametocytes enter in mosquitos during the blood meal and undergo sexual reproduction in the midgut froming the zygote -> ookinete is formed and dvp into sporozoites, which migrate to salivary gland -> mosquito injects sporozoites into another host during blood meal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What genera is Encephalitozoon cuniculi?

A

Microsporida

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the differences between tachyzoites and bradyzoites of Toxoplasma gondii?

A

Motile coccidians.
- Tachyzoites divide fast, found in pseudocysts
- Bradyzoites divide slower because of Ab effect, found in tissue cyst

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Leucocytozoon simondi is a parasite of what kind of host?

A

birds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Neosporium caninum- what are its lifecycle and pathogenesis?

A

IH ingest sporulated oocyst -> excyst , transform to tachyzoites -> undergo endoploygony intracellularly -> pseudocyst formation in various tissue cells -> rapture ->tachyzoites release and penetrate other cells -> become bradyzoites and undergo endodyogony -> tissue cyst -> FH ingest tissue cyst -> bradyzoites excyst in intestine -> differentiate into micro and macro gamonts -> zygote -> unsporulated oocyst shed in feces of FH
IH= eq, cow -> abortion
DH= dog
Transmission= horizontal and vertical

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the cause of neonatal diarrhea in piglets?

A

Isospora suis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Phlebotomae and lutzomyia are vectors of:

A

Leishmania - sandfly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What diptera are vectors of Trypanosoma equiperdum?

A

None. T.equiperdum is transmitted by coitus.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Tritrichomans foetus- how many flagella?

A

3 anterior flagella and 1 posterior free flagella

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How/what is this -

A

Oocyst of cryptosporidium with 4 sporozoites

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How to diagnose giardosis?

A

Centrifugal fecal flotation : zinc sulphate (FAUST)
Cyst : intermittant shedding examined over 3 fecal exams in 5-7 days
PCR
ELISA
Post treatment feces examination is essential

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What causes cutaneus leishmaniosis?

A

L. tropica major and minor, L. aethiopica

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Where does the gamogony of Babesia occur?

A

intestinal cell of tick, forming a kinet (transovarial/transtadial)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What causes blackhead disease?

A

Histomonas meleagridis.

17
Q

In which form is Babesia found in vertebrate?

A

Sporozite, merozite, gamont.

18
Q

Where dose sporogony occur in Eimaria?

A

External environment

19
Q

How to diagnose trichomonas?

A

By clinical signs, agent identification, serological test.
- T gallinae - swap of esophagus of pigeons
- T.foetus - swabbing from vagina in first few days after infection Bull = examination of sperm- swabbing of preputial sac. Abortion - examination of amniotic fluids.

20
Q

What is intravital diagnosis of sarcocycs?

A

Intermediate host - iv.
- serological test (IFAT, ELISA, IHAT)
- biopsy -> histology