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RUSVM Parasitology Lab Final & Final > Image Review > Flashcards

Image Review Flashcards

1
Q

Identify the parasite. What is the site of infection?

A

Ascaris suum

small intestine

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2
Q

Identify this parasite of pigs that causes “milk spots.” How would you treat the pigs?

A

Ascaris suum

Treat & clean sows 2 weeks before farrowing, then again at weaning

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3
Q

Identify the parasite. What is its common name?

A

Ascaris suum

Pig roundworm

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4
Q

Identify this parasite of pigs. What is the common name? What are you likely to see in feces?

A

Strongyloides ransomi

Common name: threadworm

Embryonated eggs and L1 in feces

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5
Q

What is the site of infection for this pig parasite?

A

Strongyloides ransomi

Small intestine

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6
Q

L3 skin penetration by this parasite causes:

A

erythema

(Strongyloides ransomi)

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7
Q

What is the scientific name of the nodular worm pictured? What is its site of infection?

A

Oesophagostomum spp.

Large intestine

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8
Q

This parasite was identified in a blood smear of a cat that died after having pyrexia, anemia and icterus.

What is the parasite? To which taxonomic class does it belong?

A

Cytauxzoon spp.

Class Piroplasmidia

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9
Q

This organism parasitizes the distal parts of equine limbs.

Identify the parasite. Describe the mouthparts.

A

Chorioptes spp with rounded mouthparts

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10
Q

These organisms were seen in a canid fecal examination.

What are the parasites?

A

Trichuris, Capillaria and coccidian oocysts.

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11
Q

A dog has been regurgitating persistently. These eggs were observed in the fecal examination.

What is the parasite? Which diagnostic tool was used?

A

Spirocerca lupi.

Fecal floatation.

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12
Q

A dog was admitted to the hospital with diarrhea and erythema. These parasites were identified in fresh feces.

What is the parasite?

A

Larvae of Strongyloides stercoralis

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13
Q

These parasite eggs were identified in a fecal examination of a cat. What type of eggs are these?

A

Taenia eggs

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14
Q

This parasitic organism was noted in a fecal examination from a dog.

Identify the parasite.

A

Dipylidium caninum.

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15
Q

Several eggs are observed in the fecal examination of a dog.

Identify the parasite. Which diagnostic method was used?

A

Nanophyetus salmincola, recovered with the sedimentation method

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16
Q

Sheep and goats are parasitized by these organisms. What is the common name?

A

“Sheep tick”

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17
Q

Identify the parasite. What is its common name?

A

Argas spp.

Fowl tick

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18
Q

Identify this parasite of cats. What is the site of infection?

A

Otodectes cynotis. Ears.

19
Q

This egg (130 µm) was identified in an ovine fecal examination. Identify the parasite. What is its common name?

A

Nematodirus spp.

Long neck bankrupt worm

20
Q

This parasite was found on a dog. What is it? What is its common name?

A

Trichodectes canis.

Dog biting louse.

21
Q

This parasite was identified in the fecal examination of cattle grazing in a marsh. Clinical signs include edema, bottlejaw and anemia.

Identify the parasite. Which diagnostic method was used?

A

Fasciola hepatica egg.

Sedimentation

22
Q

Identify this parasite of dogs. What is the site of infection?

A

Demodex canis

Hair follicles and sebaceous glands.

23
Q

Identify this avian parasite. What is its common name?

A

Cimex spp.

Bedbug, bird bug, bat bug

24
Q

This parasite infects swine and is 150 µm in size.

Identify the parasite. What is its key clinical sign?

A

Balantidium spp.

Dystentery & diarrhea.

25
This deformed beak was caused by which avian parasite? Where does the life cycle take place?
*Knemidocoptes* spp. Entire life cycle occurs on host.
26
Identify this parasite found in sheep. What is its site of infection?
*Oestrus ovis.* **Nasal passages**
27
This parasite was found during the fecal examination of a sheep. Identify the parasite. Which stage(s) cause the main pathogenesis? What is the most prominent sign in severe infections?
*Nematodirus* spp. (Long neck bankrupt worm) **Larval stages** cause the most pathogenesis. **Diarrhea** is the main clinical sign
28
Identifiable in a blood smear, these parasites cause anemia, depression and anorexia in a dog. Identify the parasite. What condition does it cause?
*Babesia canis.* **Canine pioplasmosis/babesiosis**
29
What type of egg is this?
Strongyle egg. Can be differentiated by culturing to 3rd stage larva
30
This is from a fecal examination in a donkey. The size is 40-52 X 32-40 µm. Identify the parasite. How soon are larvae present in the milk of a mare?
*Strongyloides* spp. Larvae present in milk of mare by **4th day.**
31
These eggs were found in a fecal exam of a swine. Identify the egg in the top left of the picture. What about the other 2 eggs?
Three ***Ascaris suum*** eggs. The two on the right have lost their thick outer coating.
32
Identify this equid parasite. What is the infective stage?
*Anoplocephala* spp. Cysticercoid is the infective stage
33
This parasite (400 µm) was found in a fresh horse fecal examination. Identify the parasite. What is its common name? Site of infection?
*Dictyocaulus arnfieldi* **Lungworm** Site of infection: bronchi of lungs
34
These parasites commonly infest rabbits, rodents and also cats and dogs in the subcutaneous tissue. Identify the parasite.
*Cuterebra* spp.
35
This organism is called "nodular worm" in swine. Identify the parasite. What is the infective stage?
*Oesophagostomum* spp. egg Infective stage: L3
36
This parasite was recovered from the inguinal region of a dog and caused paralysis. Identify the parasite. What is its common name?
*Ixodes* spp. Black-legged tick; deer tick
37
Which three parasites are pictured here? (from fecal smear of a canid)
* *Toxocara canis* * *Isospora* spp*.* * *Ancylostoma caninum*
38
This is an egg of the pig lungworm. What is the scientific name? What is/are the intermediate host(s)?
*Metastrongylus* spp. Intermediate hosts are **earthworms**
39
This parasite (300 µm) was identified in a fresh fecal examination from sheep and goats. Identify the parasite. What is its diagnostic stage? Which diagnostic method is used?
*Muellerius* spp. (Lungworm) **L1** is isolated using the **Baermann method.** _\*\*Remember, look for the S-shaped kink in the tail_
40
This parasite was recovered from the stomach and rectum of an equid. Identify the parasite. Where do you find the eggs of this organism?
*Gasterophilus* spp. Eggs on **hair of forelegs** and **shoulders** or **intermandibular area**
41
This parasite was found by you on a bird during daytime. Identify the parasite. What is its common name?
*Ornithonyssus* spp. **Fowl mite** \*\*This is the most common poultry mite
42
A dog fecal floatation revealed *these* parasitic organisms. (75-90 x 60-75 µm). Identify the parasites shown.
*Toxocara canis* and *Toxoscaris leonina* eggs
43
These parasite stages were identified in an equine fecal examination and measure 85-95 X 40-45 µm. Identify the parasite. What is its common name. What is the infective stage?
*Oxuris equi.* (Large pinworm) Infective stage: L3
44
This parasite causes catarrhal gastritis in dogs and cats. Identify the parasite. What is the appropriate treatment for this parasite?
*Physaloptera* spp. (Stomach worm) ## Footnote **No treatment**

RUSVM Parasitology Lab Final & Final (6 decks)

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