Nematodes

Question 1

Common Name: esophageal worm
Host: Canine and felines
Transmission: ingestion of eggs

roundworm

Answer 1

Spirocerca lupi

adult worms reside in deep tunnels within these nodules and lay their eggs though the fistulous openings in the npdules
have a “paper clip” appearnace

Question 2

Common Name: esophageal worm
Host: Canine and felines
Transmission: ingestion of eggs

roundworm

Answer 2

Spirocerca lupi

adult worms reside in deep tunnels within these nodules and lay their eggs though the fistulous openings in the npdules
have a “paper clip” appearnace
not zoonotic

Question 3

Common name: Canine and Feline stomach worms
Transmission: ingestation of eggs
Located: Lumen of the stomach or small intestine, more commonly attached to the stomach mucosa

Answer 3

Physaloptera sp

zoonotic
Vomiting, anorexia, and dark, tarry stools are often observed in infected animals
Physaloptera species can easily be confused with ascarids.

Question 4

Common name: Gastric Capillarid of cats
hosts: felines and minx
Location: small intestine

Answer 4

Anochotheca putorii

Question 5

Common Name: Canine and feline roundworm
Hosts: Canine and Felines
Ascarids , long roundworm

Answer 5

*Toxocara canis
Toxocara cati
Toxocaris leonina *

canis (visceral larva migrans) and cati are zoonotic
found in the small intestine
Ascarids in young puppies and kittens may produce vomiting, diarrhea, constipation, and other nonspecific clinical signs

Question 6

identify

Answer 6

Toxocara canis

T. canis: 21 – 35 days prepatent period

Question 7

Identify

Answer 7

Toxocara cati

Question 8

Identify

Answer 8

*Toxocaris leonina *

Question 9

Common name: Raccoon roundworm
Hosts: Raccoon, but also seen in other species
location: small intestine

egg on bottom right

Answer 9

Baylisascaris procyonis

zoonotic - neurologic larva migrans.

Question 10

Common name: feline and canine hookworm
Transmission Route: Ingestion of eggs, through the skin, across the placenta, and through mammary milk

Answer 10

Ancylostoma caninum, the canine hookworm; Ancylostoma tubaeforme, the feline hookworm;
Ancylostoma braziliense, the canine and feline hookworm

zoonotic - cutaneous larval migrans
can cause anemia , black bloody stool
prepatent period 2-3 weeks depending on the species

Question 11

Common Name: Intestinal threadworms
Transmission Route: Through the skin and in mammary milk
Host: Dogs, cats, and humans

Answer 11

Strongyloides stercoralis
Strongyloides tumefaciens

S. stercoralis is zoonotic - strongyloidiasis.

Question 11

Common Name: Intestinal threadworms
Transmission Route: Through the skin and in mammary milk
Host: Dogs, cats, and humans

Answer 11

Strongyloides stercoralis
Strongyloides tumefaciens

S. stercoralis is zoonotic - strongyloidiasis.

Question 12

Common name: whipworm
Location of Adult: Cecum and colon
transmission: ingestation of eggs

feline whipworm is rare

Answer 12

*Trichuris vulpis(canine)

Trichuris serrata(feline)

prepatent period : 70-90 days
L1 infected stage for whipworm (others are L2 or L3)
Symptoms:
Diarrhea
Mucous-coated stool
Anemia
Death (extreme cases)

Question 13

Common Name: Heartworm
Host: Canine, Feline
Location of adult: Right ventricle and pulmonary arteries
Transmission: bite of infective female mosquito

Answer 13

Dirofilaria immitis

zoonotic
can effect ferrets
indirect life cycle
microfilariae. - baby heartworm
prepatent period is approx: 6 months in dogs
The symptoms are a decrease in exercise tolerance, right-sided heart enlargement, and abdominal ascites (fluid accumulation in the abdomen).

Question 14

Common Name: Feline lungworm
Transmission Route: Ingestion of larvae
Location of Adult: Respiratory bronchioles and alveolar duct

Answer 14

Aelurostrongylus abstrusus

These larvae are coughed up by the cat, swallowed, and passed out in the feces
prepatent period: 30 days

Question 15

Common Name: Canine lungworm
Transmission Route: Ingestion of infected L1 larvae
formerly known as Filaroides
Location of Adult: Trachea, lung parenchyma, and bronchioles, respectively

stage 1

Answer 15

*Oslerus osleri, Oslerus hirthi, and Oslerus milksi *

Question 16

Common Name: Respiratory capillarid
Host: Canines/felines and canines, respectively
Location of Adult: Bronchi and trachea, nasal cavity and frontal sinuses, respectively
Transmission Route: Ingestion of ova from feces or mucoid discharge

smaller then whipworms

Answer 16

Eucoleus aerophilus and Eucoleus böehmi

zoonotic
prepatent period ~ 40 days
E. böehmi is found in the nasal cavity and frontal sinuses of dogs, where it can cause obstruction of the nasal cavity and sinuses.