1 of 15

Endoparasite Study Note Cards

Image identification • common & scientific names • parasite class • prepatent period • treatment type

VT-116 Animal Technology II • Student Study Set

2 of 15

Canine roundworm

Identify the parasite from the image

SCIENTIFIC NAME

Toxocara canis

CLASS

Nematode (roundworm/ascarid)

PREPATENT PERIOD

2–4 weeks

MEDICATION TYPE

Anthelmintic — commonly pyrantel;

fenbendazole, milbemycin or moxidectin are also used

3 of 15

Canine whipworm

Identify the parasite from the image

SCIENTIFIC NAME

Trichuris vulpis

CLASS

Nematode (whipworm)

PREPATENT PERIOD

74–90 days

MEDICATION TYPE

Anthelmintic — fenbendazole/febantel;

selected milbemycin or moxidectin products

4 of 15

Roundworm

Identify the parasite from the image

SCIENTIFIC NAME

Toxascaris leonina

CLASS

Nematode (roundworm/ascarid)

PREPATENT PERIOD

8–10 weeks

MEDICATION TYPE

Anthelmintic — pyrantel, fenbendazole,

milbemycin or moxidectin

5 of 15

Heartworm

Identify the parasite from the image

SCIENTIFIC NAME

Dirofilaria immitis

CLASS

Nematode (filarial worm)

PREPATENT PERIOD

About 6–7 months

MEDICATION TYPE

Adulticide for adult worms — melarsomine;

macrocyclic lactones target susceptible larval stages/prevention

6 of 15

Flea tapeworm

Identify the parasite from the image

SCIENTIFIC NAME

Dipylidium caninum

CLASS

Cestode (tapeworm)

PREPATENT PERIOD

2–3 weeks

MEDICATION TYPE

Cestocide — praziquantel or epsiprantel;

flea control is essential

7 of 15

Taeniid tapeworm

Identify the parasite from the image

SCIENTIFIC NAME

Taenia spp.

CLASS

Cestode (tapeworm)

PREPATENT PERIOD

Varies by species; ~1–2 months in dogs

MEDICATION TYPE

Cestocide — praziquantel or epsiprantel

8 of 15

Canine hookworm

Identify the parasite from the image

SCIENTIFIC NAME

Ancylostoma caninum

CLASS

Nematode (hookworm)

PREPATENT PERIOD

Usually ~2–3 weeks

MEDICATION TYPE

Anthelmintic — pyrantel, fenbendazole or moxidectin;

resistance can occur

9 of 15

Giardia

Identify the parasite from the image

SCIENTIFIC NAME

Giardia duodenalis (Giardia spp.)

CLASS

Protozoan — flagellate

PREPATENT PERIOD

About 5–16 days

MEDICATION TYPE

Antiprotozoal therapy — fenbendazole and/or metronidazole may be used when treatment is indicated

10 of 15

Toxoplasma

Identify the parasite from the image

SCIENTIFIC NAME

Toxoplasma gondii

CLASS

Protozoan — coccidian

PREPATENT PERIOD

Cats: 3–10 days after tissue cysts; 19–48 days

after oocysts

MEDICATION TYPE

Antiprotozoal therapy — clindamycin is commonly

used for clinical toxoplasmosis

11 of 15

North American lung fluke

Identify the parasite from the image

SCIENTIFIC NAME

Paragonimus kellicotti

CLASS

Trematode (fluke)

PREPATENT PERIOD

Approximately 3–5+ weeks

MEDICATION TYPE

Anthelmintic/trematocide — praziquantel is

commonly used

12 of 15

Bladder worm

Identify the parasite from the image

SCIENTIFIC NAME

Pearsonema plica

CLASS

Nematode (capillarid urinary worm)

PREPATENT PERIOD

About 2 months

MEDICATION TYPE

Anthelmintic — fenbendazole or other veterinarian-selected anthelmintic protocols

13 of 15

Coccidia

Identify the parasite from the image

SCIENTIFIC NAME

Cystoisospora spp.

CLASS

Protozoa

PREPATENT PERIOD

Usually ~2–3 weeks

MEDICATION TYPE

Sulfadimethoxine (Albon)

14 of 15

Hydatid tapeworm

Identify the parasite from the image

SCIENTIFIC NAME

Echinococcus granulosus

CLASS

Cestode (tapeworm)

PREPATENT PERIOD

About 1–2 months

MEDICATION TYPE

Cestocide — praziquantel

15 of 15

Taeniid tapeworm

Identify the parasite from the image

SCIENTIFIC NAME

Taenia spp.

CLASS

Cestode (tapeworm)

PREPATENT PERIOD

Varies; dogs with T. pisiformis ~1.5–2 months

MEDICATION TYPE

Cestocide — praziquantel or epsiprantel