PQ 2 Flashcards
What is the life cycle of babesia canis
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
Sarcocystis is transmitted by:
A. Cysts
B. Trophozoites
C. Air
A. Cysts
What is the location of Histomonas meleagridis?
A. Stomach
B. Liver
C. Ceca
B. Liver
C. Ceca
primary location is in ceca
What is the species responsible for East Coast Fever?
A. Theileri hirci
B. T. parva
C. T. bovis
D. T. muris
E. T. ovis
B. T. parva
What is the life cycle of plasmodium
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
What genera is Encephalitozoon cuniculi?
A. Microsporida
B. Myxozoa
C. Ciliophora
A. Microsporida
What are the differences betw. Tachyzoites and bradyzoites of Toxoplasma gondii?
Motile coccidians.
- Tachyzoites divide fast, found in pseudocysts
- Bradyzoites divide slower because of Ab effect, found in tissue cyst
Leucocytozoon simondi is a parasite of what kind of host?
Birds
Emeria stiedae. What are its hosts and location?
Rabbit- bile duct of liver
Neosporium caninum- what are its lifecycle and pathogenesis?
- 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
What is the cause of neonatal diarrhea in piglets?
Isospora suis
Phlebotomae and lutzomyia are vectors of:
Leishmania - sandfly
What diptera are vectors of Trypanosoma equiperdum?
None. T.equiperdum is transmitted by coitus.
Tritrichomans foetus- how many flagella?
3 anterior flagella and 1 posterior free flagella
How to diagnose giardosis?
Aspiration from duodenum and sample of feces by flotation method
according to faust. Every 3 days.
What causes cutaneus leishmaniosis?
L. tropica major and minor, L. aethiopica
What is the vector of trypanosome?
Glossina spp. (tsetsefly)
Where does the gamogony of Babesia occur?
Formation of gamonts – mammalian RBC.
Gametogony – intestinal cell of tick.
What causes blackhead disease?
Histomonas meleagridis.
In which form is Babesia found in vertebrate?
Sporozite, merozite, gamont.
Where dose sporogony occur in Eimaria?
Outside the host, in the environment (depends on temp, humidity, O2)
How to diagnose trichomonas?
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.
What is intravital diagnosis of sarcocycs?
Biopsy of specimens, serologic test.
Where do histomonas reproduce?
First at the caeca and then in the liver.
Where is the flagellated form of Histomonas?
Inside the lumen of the caeca.
