Identifying Protozoa- Part 5- Flagellates excluding Trypanosoma

Leishmania 

• Macrophages of dogs, man and other wild animals.
• Amastigote stage in macrophages were parasites multiply. 

Leishmania Promastigote Stage in Sandfly Vector

Giardia Cyst

Giardia

• Transmitted faecal-orally. 
• Cysts very resistant (note NOT OOCYST). 
• Found in the gut mucosa of man, dogs, cats and cattle.
• Eight flagella with two attached to the parasite body.

Tritrichomonas Fetus

• Venerally transmitted in cattle.
• Early fetus death.
• Eradicated in the UK.
• Uterus of cows and preputial cavity of bulls.
• Single nucleus and four flagella. 

Histomonas Meleagridis

• Blackhead in young turkeys.
• Caecum and liver of turkeys and sometimes other poultry.
• Round ameboid parasite with single flagella seen in caecal lumen.