PQ 2

Question 1

What is the life cycle of babesia canis

Answer 1

Tick injects sporozoites into host �� entering RBC

Schizogony: vertebrate
- Sporozoite in saliva (vermicles) -> rbc
- Trophozoites - binary fission – rbc rupture
- Merozoites -> blood -> new ec

Gamogony: tick
- Blood meal ingest Ec – gametocytes released
- Micro and macrogametes -> motile zygote (ookinet)
- Reproduction system -> tick eggs (treansovary/stadial)
- Salivary gland

Sporogony: tick
- Saliva and form sporpnt
- In salivary gland -> sporozoites

Question 2

Sarcocystis is transmitted by:

A. Cysts
B. Trophozoites
C. Air

Answer 2

A. Cysts

Question 3

What is the location of Histomonas meleagridis?
A. Stomach
B. Liver
C. Ceca

Answer 3

B. Liver
C. Ceca

primary location is in ceca

Question 4

What is the species responsible for East Coast Fever?

A. Theileri hirci
B. T. parva
C. T. bovis
D. T. muris
E. T. ovis

Answer 4

B. T. parva

Question 5

What is the life cycle of plasmodium

Answer 5

Schizogony – vertebrate host.

Gamogony & Sporogony –avertebrate host
- Mosquito ingest infected blood
- Microgamete fertilizes macrogamete -> zygote (ookinet)
- Oocyst formst in stomach and ruptures
- Thousands of sporozoites enter salivary gland
- Sporozoited injected into host
o Enter and infect liver cells -> schizont (extraerythocytic)
o Release merozoites to blood -> enter RBC’s (erythrocytic)
o Schizont develops with merozoites
o macro & microgamonts develop -> blood meal to mosquito

Question 6

What genera is Encephalitozoon cuniculi?

A. Microsporida
B. Myxozoa
C. Ciliophora

Answer 6

A. Microsporida

Question 7

What are the differences betw. Tachyzoites and bradyzoites of Toxoplasma gondii?

Answer 7

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

Question 8

Leucocytozoon simondi is a parasite of what kind of host?

Answer 8

Birds

Question 9

Emeria stiedae. What are its hosts and location?

Answer 9

Rabbit- bile duct of liver

Question 10

Neosporium caninum- what are its lifecycle and pathogenesis?

Answer 10

• Oocyst from dog to environment
• Ingestion of sporulated oocyst by IH (Bo) and tachyzoites released
• Penetrate epithelium and migrate to tissues – bradyzoites -> cysts
• Tachyzoites though placenta – congenital
• Dog eat infected maternal – sexual reproduction in intestine

Question 11

What is the cause of neonatal diarrhea in piglets?

Answer 11

Isospora suis

Question 12

Phlebotomae and lutzomyia are vectors of:

Answer 12

Leishmania - sandfly

Question 13

What diptera are vectors of Trypanosoma equiperdum?

Answer 13

None. T.equiperdum is transmitted by coitus.

Question 14

Tritrichomans foetus- how many flagella?

Answer 14

3 anterior flagella and 1 posterior free flagella

Question 15

How to diagnose giardosis?

Answer 15

Aspiration from duodenum and sample of feces by flotation method
according to faust. Every 3 days.

Question 16

What causes cutaneus leishmaniosis?

Answer 16

L. tropica major and minor, L. aethiopica

Question 17

What is the vector of trypanosome?

Answer 17

Glossina spp. (tsetsefly)

Question 18

Where does the gamogony of Babesia occur?

Answer 18

Formation of gamonts – mammalian RBC.
Gametogony – intestinal cell of tick.

Question 19

What causes blackhead disease?

Answer 19

Histomonas meleagridis.

Question 20

In which form is Babesia found in vertebrate?

Answer 20

Sporozite, merozite, gamont.

Question 21

Where dose sporogony occur in Eimaria?

Answer 21

Outside the host, in the environment (depends on temp, humidity, O2)

Question 22

How to diagnose trichomonas?

Answer 22

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.

Question 23

What is intravital diagnosis of sarcocycs?

Answer 23

Biopsy of specimens, serologic test.

Question 24

Where do histomonas reproduce?

Answer 24

First at the caeca and then in the liver.

Question 25

Where is the flagellated form of Histomonas?

Answer 25

Inside the lumen of the caeca.