14. Taenia pisiformis - cysticercus pisiformis

Question 1

What is the intermediate host for Taenia pisiformis?

Answer 1

Lagomorphs
(rodents)

Question 2

What is a significant clinical sign of Taenia pisiformis in intermediate hosts?

Answer 2

Severe damage to the liver

Question 3

FH of Taenia pisiformis

Answer 3

Dog & other canids
(cat)

Question 4

location of Taenia pisiformis

Answer 4

IH: liver
FH: SI

Question 5

Morphology of Taenia pisiformis

Answer 5

up to 2 m, scolex with 4 suckers, rostellum with 2 rows of 34-48 rostellar hooks, 200-250 proglottids

Question 6

Pathogenesis of Taenia pisiformis

Answer 6

IH: severe liver damage, can result in death
FH: Light infections may result in digestive disturbances and loss of condition

Question 7

CS of Taenia pisiformis

Answer 7

Non-specific symptoms – anorexia, diarrhoea, anaemia.
Abnormal localization – lungs can give difficulty breathing, brain can also be affected.

IH

Question 8

DX of Taenia pisiformis

Answer 8

IH: necropsy
FH: feces

Question 9

TX of Taenia pisiformis

Answer 9

IH: none
FH: praziquantel

Question 10

Control of Taenia pisiformis

Answer 10

Prevention is aimed at thorough examination of the meat after killing of rabbits.
Have hygienic breeding of rabbits.

Question 11

LC of Taenia pisiformis

Answer 11

1. Proglottids passed in feces
2. Proglottid release eggs to environment
3. IH ingest vegetation containing eggs
4. Oncosphere hatch from the egg in IH gut & penetrate intestinal wall
5. Go to blood stream, to the liver and develop into cysticercus pisiformis. Stay in the liver for 2-4 weeks
6. FH ingest infected IH with cysticercus, which go to intestine and attach to the wall with hooks & suckers. Develop into adults –> gravid proglottid released.

Question 12

Taenia pisiformis metacestode

Answer 12

cysticercus pisiformis