Lab #4 Flashcards
Who lacks an external cuticle: roundworms or flatworms
Flatworms
What is the function of tegument on parasitic flatworms
Secretory and absorptive functions
What fluke is commonly found in liver and bile duct in wild and domestic ruminants
F. Hepatica
What do DH of F. Hepatica ingest that causes disease
Metacercaria
Identify the following: found in liver and bile ducts of ruminants
F. Hepatica
What fluke infests mesenteric veins of dogs
Heterobilharzia americana
What is main reservoir host for H. Americana
Raccoons
How is H. Americana transmitted
Skin penetration
What parasite causes canine shistosomiasis
H. Americana
What is the scolex
Anchoring structure
What do proglottids contain
Sex organs and eggs
What is the most common tapeworm in dogs and cats
Dipylidium caninum
What is the intermediate host for D. Caninum
Fleas or chewing louse
What is the infective stage for Dipylidium caninum
Cysticeroid stage
__irritate Perianal region in dogs or cats with D. Caninum
Motile gravid proglottids
The following tapeworms were obtained from dog/cat with flea infection. What is it
D. Caninum
What species does Taenia Pisiformis infect
Dogs
How do dogs get T. Pisiformis
Eat rabbit or viscera that contains larvae
Farm dog presents with Perianal irrational and diarrhea. Owner informs you that dog hunts rabbits. What is parasite
T. Pisiformis
What species does Echinoccocus Granulosus infect
Dogs
What type of farms do dogs typically get infected with E. Granulosus
Sheep farming
E. Granulosus contains what type of cysts
Hydatid cyst
Most dogs don’t develop disease from E. Granulosus by why do we always treat
Zoonotic risk, humans can get uniocular hydatid disease
Dog presents for annual exam, fecal shows these. -Owner lives on sheep farm. What parasite caused this and what is red arrow pointing to on right image
E. Granulosus
Red arrow: hydatid cysts
Who has external cuticle and body cavity: roundworms or flatworms
Roundowmr s
What dx tools can you use to dx parasitic roundworms
- Fecal float
- Baermann
What species does A. Suum infect
Swine
Pig presents with respiratory distress. Liver and lungs were looked at. Liver has milk spots and lungs are damaged. The following parasite was obtained. What is it
A. Suum
Where does adult of trichinella infect
Mucosa of small intestine
Where do larvae of trichinella species infect
Skeletal muscle
What trichinella spp is most commonly associated with domestic animals
T. Spiralis
Adult worm on left found in mucosa of small intestine and larvae on right found in skeletal muscle. What is it
T. Spiralis
What do hookworms feed on
Mucosa of SI, blood and tissue
What is the main cause of canine hookworm disease
Ancylcostoma caninum
What is dirofilaria immitis
Canine heart worm
What is intermediate host for D. Immitis
Mosquitoes
Following parasite was found in canine blood smear and pulmonary arteries. What is it
D. Immitis
