Nematodes of the Small Animal Gut

Question 1

Toxocara

Answer 1

roundworm

Question 2

Trichuris

Answer 2

whipworm

Question 3

Ancylostoma

Answer 3

hookworm

Question 4

Paratenic host of Toxocara canis?

Answer 4

rat

Question 5

prepatent period

Answer 5

time before infectious

Question 6

Can Toxocara cati be transmitted transplacentally?

Answer 6

Nope, only transmammary (unlike T. canis which is both)

Question 7

Does Toxoscaris leonina have vertical transmission of any kind?

Answer 7

nope! there is no migration through tissues in the definitive host

Question 8

Baylisascaris procyonis

Answer 8

raccoon roundworm

Question 9

Trichuris adult worm

Answer 9

skinny end that is about 2/3 of body is the head
thick end is the tail

Question 10

Toxocara in host species tend to _____

Answer 10

coil, like a slinky, can cause obstruction

Question 11

Is whipworm egg shedding intermittent?

Answer 11

yes

Question 12

4 Most Common Worms per IDexx

Answer 12

1. Ancylostoma caninum
2. Toxocara canis
3. Trichuris vulpis
4. Giardia

Question 13

metalloproteases

Answer 13

secreted by hookworms so that when they release and reattach somewhere else, the original site keeps bleeding –> anemia

Question 14

Can hookworms transmit transplacentally?

Answer 14

no

Question 15

Are T. canis and cati zoonotic?

Answer 15

yes

Question 16

Dirofilaria repens

Answer 16

a worm that stays in the skin but can confound heartworm diagnoses!!

Question 17

Where does the heartworm mature?

Answer 17

pulmonary artery

Question 18

Are adult dogs resistant to reinfection by Toxocara canis?

Answer 18

yes