Final Exam Revision Flashcards
Where is sarcocystis found within sheep and cattle?
Found within the muscle
How many hosts are found within the lifecycle of Sarcocystis?
2 hosts: - direct is carnivore - indirect is sheep
How does Sarcocystis affect the dog?
it doesn’t it will only affect sheep and cattle (the Australian species are relatively mild compared to other species around the world)
How would Sarcocystis be diagnosed?
Zinc flotation of faecaliser of the faeces
Name the following parasite in the diagram below:
What is the main vector for T.evansi?
Tabaniid fly
What stage of the trypanosoma is found within the blood?
Trypanosoma found in blood is trypomastigote
What life cycle stage of trypanosoma is in the insect?
Epimastigote
Name the parasite that is in the picture below:
Briefly describe th lifecycle of cryptosporidium:
Sporulated oocysts are passed in the faeces. If ingested by sheep the oocysts rupture in the small intestine to liberate oocysts.
Is cryptosporidium zoonotic?
Some species of cryptosporidium are zoonotic.
Is cryptosporiddium usually pathogenic?
No. Stress will often exacerbate the symptoms that are observed within young animals though.
How is crytposporidium normally identified?
Normally diagnosed through a faecal egg count of the faeces.
What are the common clinical symptoms that are associated with Eimeria?
Mainly young animals. Blood strained diarrhoe is a commonly observed clinical symptom
Name the following parasite in the digram below:
Eimeria
How is giardia typically diagnosed?
Microscopy showing characteristic cysts/trophozoites within the faeces.
Name the parasite in the image below:
Giardia
How is toxoplamsa gondii transmitted?
In utero or via milk. Oocysts from ingestion or via vertical transmission
How is toxoplasma gondii diagnosed?
Presence of characterisitc oocysts in cat faeces
Name the parasite in the image below:
toxoplasma gondii
What are the pathological effects of the Balantidium Coli parasite?
More important pathogen of primates. Causes bloody diarrhoea and mucosal ulceration
How is the balantidium coli parasite diagnosed?
Diagnosis is by the characteristic presence of cysts or trophozoites within the faeces
What are the pathological effects of Entamoeba?
Infections are not considered to be of clinical significance within pigs.
How is babesia canis transmitted?
Transmitted throught the vector of the tick
Name the parasite in the digram below:
Babesia canis
How is babesia canis diagnosed:
Diagnosed through the presence of piriform parasites within the RBC smear
How would humans aquire an Echinococcus granulosus infection?
There is an intermediate host in herbivorous animals and a definitive host in a dog. Humans can only be infected by consuming dog faeces, as humans are also an intermediate host.
Briefly describe the lifecycle that is involved in taenia hydatigenia:
Involves an indirect lifecycle. The definitive host is the dog, whereas the intermediate host is the sheep.
Name the parasite that is responsible for this condition:
Taenia Hydatigena
Name the parasite in the diagram below
Monezia
How do humans become infected with Diphylidium Caninum?
Through the accidental ingestion of a flea or louse.
Name the parasite in the diagram below:
Diphylidium Caninum
Briefly explain the indirect lifecycle of Diphyliidium Caninum:
- DH: Dogs, other carnivores (small intestine)
- IH: flea or louse
- Accidental: Humans
- Egg packets eaten by larvae of Ctenocephalides, develop into larval metacestode, cysticercoid
- Infected adult fleas/lice eaten while DH grooming
Name the parasite in the digram below:
Fasciola Hepatica
