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Parasitology > Quiz 2 > Flashcards

Quiz 2 Flashcards

1
Q

Different forms of Trypanosomes and where they found

A

Typomstigote (extracellular mammals)

Epimastigote/Promastigote (intermediate host)

Amastigote (intracellular mammals)

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2
Q

Intermediate host of Trypanosoma cruzi**

A

KISSING BUG

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3
Q

Is transmission Trypanosoma cruzi direct or indirect**

A

INDIRECT

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4
Q

How you contract Trypanosoma cruzi (3)**

A

Fecal-oral
Transmammary
Transplacental

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5
Q

3 forms of Leishmania**

A

1) Cutaneous
2) Mucocutaneous
3) Visceral

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6
Q

Eimeria affects which species (5)

A 
Llama/alpaca**
Ruminants
Chickens
Rabbit
Reptile
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7
Q

Morphology of Eimeria cysts***

A

4 SPOROCYSTS
2 SPOROZOITES

(be able to draw)

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8
Q

Morphology of Isospora cysts***

A

2 SPOROCYSTS
4 SPOROZOITES

(be able to draw)

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9
Q

What are the 2 theories of bovine coccidosis

A

1) Loss of Mg, Ca

2) Neurotoxin produced

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10
Q

T/F Trypanosoma cruzi is zoonotic

A

TRUE

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11
Q

Dx Trypanosoma cruzi (give 2)

A

BLOOD SMEAR (can see the the trypomastigote)
C/S
ELISA

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12
Q

C/S Trypanosoma cruzi

A

Chagoma
Romana’s sign
Myocarditis (dogs)
etc…

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13
Q

Which species does Trypanosoma equiperdum affect

A

Equids

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14
Q

Transmission of Trypanosoma equiperdum

A

Coitus

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15
Q

Lifecycle of Trypanosoma equiperdum

A

Direct

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16
Q

Is Trypanosoma zoonotic

A

NO

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17
Q

Is Trypanosoma reportable

A

YES

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18
Q

C/S Trypanosoma equiperdum

A

Silver dollar plaques (pathognomic)
Genital edema

Vaginitis
Scrotal swelling

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19
Q

Can Trypanosoma equiperdum cause mortality

A

YES if left untreated

20
Q

What is pathognomic lesion of Trypanpanosoma equiperdum

A

Silver dollar plaques - edematous subcutaneous plaques

21
Q

Dx Trypanosoma equiperdum

A

Blood smears

EDTA samples

22
Q

Intermediate host of Trypanosoma equiperdum

A

NONE! Direct! Only affects equids!

23
Q

Definitive host Leishmania

A

Mammals

24
Q

Intermediate host Leishmania

A

Sand flies

25
Q

Vector Leishmania

A

Sand flies

26
Q

What does Leishmania have instead of Epimastigotes?

A

Promastigotes

27
Q

T/F - leishmania lack tryptomastigotes

A

TRUE

28
Q

C/S cutaneous leishmania

A

Vasculitis, arthritis
Immune mediated via IgG
Round lesions on muzzle, footpad

No visceral involvement (!)

29
Q

C/S mucocutaneous leishmania

A

skin ulcers

nose sloughing

30
Q

C/s visceral leishmania

A

Dermal leishmanoid
Wasting
Non-regenerative anemia

Fatal!

31
Q

Which type of leishmania can be fatal

A

Visceral

32
Q

Dx Leishmania

A

Montenegro Test
Blood smears (see the organism)
ELISA

33
Q

Which parasite causes bloody diarrhea

A

Apicomplexa

34
Q

Which parasite causes yellow diarrhea

A

Isospora

35
Q

Which parasite causes green diarrhea

A

Eimeria

36
Q

C/S coccidiosis/Apicomplexa

A

Bloody diarrhea in calves

Rectal prolapse

37
Q

What can occur secondary to coccidiosis

A

Pneumonia

Enteritis

38
Q

Transmission Eimeria

A

Direct

39
Q

C/S coccidiosis in camelids

A

loss weight

diarrhea

40
Q

C/s Eimeria in horses

A

NONE! Incidental finding

41
Q

Dx Eimera

A

Fecal float
Histopathology
- Villous atrophy
- Sloughing

42
Q

Is Isospora species specific?

A

Yes - dogs, cats, piglets, reptiles

43
Q

Which species can get isospora and eimera? How would you differentiate which?

A

Reptiles!

Eimera have 4 cysts with 2 zoites
Isospora have 2 cysts with 4 zoites

44
Q

Which species has high morbidity and mortality with Isospora

A

Pigs (young piglets)

45
Q

Is Isospora direct or indirect

A

Direct

except. .
1) Hypnozoite –> tissue of paratenic host
2) Sperzoite/merzoite –> dog, cat, human

46
Q

C/S Isospora

A

Diarrhea (yellow in piglets)
Weight loss
Enteritis/Colitis

47
Q

Dx Isospora

A

Fecal float for oocyst
PCR
Mucosa scrape

Parasitology (6 decks)

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