Nematodes of the urinary system

Question 1

Superfamily Trichuroidea

Answer 1

Pearsonema spp

Question 2

Superfamily Dictophymoidea

Answer 2

Dictophyma renale

giant kidney worm of dogs

Question 3

How dogs or cats get a Pearsonema infection?

Answer 3

Ingests worm, paratenic host, material containing earthworm material

Question 4

Where does the Pearsonema larva migrate to?

Answer 4

The bladder and then lay eggs after 2 months

Question 5

How does a dog get a Dioctophyma infection

Answer 5

Ingesting an aquatic annelid (fish/frog)

Question 6

Where do the Dioctophyma larvae migrate to?

Answer 6

Through the liver to the kidney

Lay eggs after 4-5 months

Question 7

Superfamily Strongyloides

Answer 7

Stephanurus dentatus

Question 8

How do pigs get a stephanurus dentatus infection?

Answer 8

Ingestion of free L3 stage larvae

Ingestion of earthworm carrying L3

Question 9

What happens at L3?

Answer 9

Skin penetration

Question 10

What happens to stephanurus dentatus larvae after migration?

Answer 10

They encyst and lay eggs through a hole

Question 11

What is the prepatent period for Stephanurus dentatus?

Answer 11

6-19 months