Quiz 2 Flashcards
Different forms of Trypanosomes and where they found
Typomstigote (extracellular mammals)
Epimastigote/Promastigote (intermediate host)
Amastigote (intracellular mammals)
Intermediate host of Trypanosoma cruzi**
KISSING BUG
Is transmission Trypanosoma cruzi direct or indirect**
INDIRECT
How you contract Trypanosoma cruzi (3)**
Fecal-oral
Transmammary
Transplacental
3 forms of Leishmania**
1) Cutaneous
2) Mucocutaneous
3) Visceral
Eimeria affects which species (5)
Llama/alpaca** Ruminants Chickens Rabbit Reptile
Morphology of Eimeria cysts***
4 SPOROCYSTS
2 SPOROZOITES
(be able to draw)
Morphology of Isospora cysts***
2 SPOROCYSTS
4 SPOROZOITES
(be able to draw)
What are the 2 theories of bovine coccidosis
1) Loss of Mg, Ca
2) Neurotoxin produced
T/F Trypanosoma cruzi is zoonotic
TRUE
Dx Trypanosoma cruzi (give 2)
BLOOD SMEAR (can see the the trypomastigote)
C/S
ELISA
C/S Trypanosoma cruzi
Chagoma
Romana’s sign
Myocarditis (dogs)
etc…
Which species does Trypanosoma equiperdum affect
Equids
Transmission of Trypanosoma equiperdum
Coitus
Lifecycle of Trypanosoma equiperdum
Direct
Is Trypanosoma zoonotic
NO
Is Trypanosoma reportable
YES
C/S Trypanosoma equiperdum
Silver dollar plaques (pathognomic)
Genital edema
Vaginitis
Scrotal swelling
Can Trypanosoma equiperdum cause mortality
YES if left untreated
What is pathognomic lesion of Trypanpanosoma equiperdum
Silver dollar plaques - edematous subcutaneous plaques
Dx Trypanosoma equiperdum
Blood smears
EDTA samples
Intermediate host of Trypanosoma equiperdum
NONE! Direct! Only affects equids!
Definitive host Leishmania
Mammals
Intermediate host Leishmania
Sand flies
Vector Leishmania
Sand flies
What does Leishmania have instead of Epimastigotes?
Promastigotes
T/F - leishmania lack tryptomastigotes
TRUE
C/S cutaneous leishmania
Vasculitis, arthritis
Immune mediated via IgG
Round lesions on muzzle, footpad
No visceral involvement (!)
C/S mucocutaneous leishmania
skin ulcers
nose sloughing
C/s visceral leishmania
Dermal leishmanoid
Wasting
Non-regenerative anemia
Fatal!
Which type of leishmania can be fatal
Visceral
Dx Leishmania
Montenegro Test
Blood smears (see the organism)
ELISA
Which parasite causes bloody diarrhea
Apicomplexa
Which parasite causes yellow diarrhea
Isospora
Which parasite causes green diarrhea
Eimeria
C/S coccidiosis/Apicomplexa
Bloody diarrhea in calves
Rectal prolapse
What can occur secondary to coccidiosis
Pneumonia
Enteritis
Transmission Eimeria
Direct
C/S coccidiosis in camelids
loss weight
diarrhea
C/s Eimeria in horses
NONE! Incidental finding
Dx Eimera
Fecal float
Histopathology
- Villous atrophy
- Sloughing
Is Isospora species specific?
Yes - dogs, cats, piglets, reptiles
Which species can get isospora and eimera? How would you differentiate which?
Reptiles!
Eimera have 4 cysts with 2 zoites
Isospora have 2 cysts with 4 zoites
Which species has high morbidity and mortality with Isospora
Pigs (young piglets)
Is Isospora direct or indirect
Direct
except. .
1) Hypnozoite –> tissue of paratenic host
2) Sperzoite/merzoite –> dog, cat, human
C/S Isospora
Diarrhea (yellow in piglets)
Weight loss
Enteritis/Colitis
Dx Isospora
Fecal float for oocyst
PCR
Mucosa scrape
