Parasites of Canine and Feline hosts (identification) - Lab microphotographs from eCollege and others. Flashcards by Ashton Moss

Q

A

Toxocara canis (common roundworm, ascarid) eggs.

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Q

A

Spirocerca lupi (esophageal worm) egg.

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Q

A

Ancylostoma caninum (hookworm)

(male posterior extremity)

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Q

What organism is this?

What are the 2 arrows pointing to?

A

Ancylostoma spp.

Buccal cavity (top arrow)

Esophagus (bottom arrow)

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Q

What is this organism?

What is the arrow pointing to?

A

Strongyloides stercoralis (threadworm).

Base of the esophagus (1/3 the length of the nematode).

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Q

What organism is this?

What are the arrows pointing to?

A

Dipylidium caninum (common tapeworm/cucumber tapeworm)

Genital pores.

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Q

What organism is this?

A

Dirofilaria immitis

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Q

Name the parts (shown in arrows) of this Dipylidium caninum.

A

Scolex

Neck

Proglottid

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Q

Which organism’s eggs are these?

A

Dipylidium caninum

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Q

What organism is this?

A

Echinococcus granulosus

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Q

Which organism’s egg is this?

A

Echinococcus granulosus

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Q

What pathological disease is this? What organism causes it?

A

a hydatid cyst caused by Echinococcus granulosus

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Q

A

Taenia saginata egg

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Q

A

Taenia pisiformis scolex

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Q

A

Taenia pisiformis mature proglottid

(these can be seen with gravid proglottids as well)

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Q

What organism is this? What is the arrow pointing to?

A

Diphyllobothrium latum.

Bothria (slot-like groove)

Q

A

Diphyllobothrium latum eggs.

Q

A

Paragonimus egg

Q

A

Trichodectes canis

(Dog biting louse or canine chewing louse)

Q

A

Ctenocephalides adult.

(dog/cat flea)

Q

A

Ctenocephalides larva

Q

What organism is this? What are the arrows pointing to?

A

Ixodes dammini

(deer tick/black legged tick)

(Left: anus (top), anal groove (bottom))

(Right: palp (top), hypostome (bottom))

Q

A

Dermacentor variabilis

(American dog tick)

Q

A

Rhipicephalus sanguineus

(Brown dog tick or Kennel tick)

Q

A

Sarcoptes scabiei

(Sarcoptic mange mite, itch mite, or scabies mite)

Q

A

Demodex folliculorum adult

(demodectic mange mite, follicle mite)

Q

A

Cheyletiella yasguri

(walking dandruff)

Q

A

Rhodnius spp adult

(kissing bug)

**The proboscis is not visible in this selected picutre**

Q

A

Giardia lamblia trophozoites

Q

A

Giardia lamblia cysts

Q

A

Trypanosoma cruzi

(Chagas’ disease)

Q

A

Babesia canis

Q

A

Sarcocystis spp.

(in muscle section)

Q

A

Trichuris spp egg

(whipworm)

Q

A

Trichuris spp adult

(whipworm)