2. Lecture : TAPEWORMS: Dipylidiosis

Question 1

flea tapeworm/cucumber-seed tapeworm (DIPYLIDIUM CANINUM) hosts?

Answer 1

-FH; dogs, cats, wild carnivores, humans
-IH: fleas, lice

Question 2

morphology: what shape are adult segments and how many genital pores segments have?

Answer 2

-20-70cm
cucumber seed shape
4 suckers, rostrellum with hooks
-NO UTERINE PORE
-2 sets of genital organs

Question 3

egg morphology

Answer 3

5-50 eggs
shell thin membrane + thick shell
inside oncospehere
oval to round shape

Question 4

life cycle : how is parasite transmitted to final host?

Answer 4

eating infected flea

Question 5

where is adult parasite located in FH ?

Answer 5

small intestine

Question 6

how long prepatent period last?

Answer 6

1 month

Question 7

epidemiology: why is it important to do prophylactic flea control to animals and to environment?

Answer 7

re-infection common > fleas in envi infection quickly

Question 8

disease symptoms

Answer 8

mostly asymptomatic > itching perianal region> dog scooting!!!

Question 9

diagnostic method: where to find segments / eggs and what method to use?

Answer 9

proglottids in perianal region / faeces - soak proglottids in water, between 2 glasses or break open > detecting eggs: flotation/sedimentation, egg packets, false neg. non reliable

Question 10

why flotation method often unreliable / false negative?

Answer 10

might miss parasites

Question 11

what is main prophylactic / prevention method?

Answer 11

prasiquanltel , control of fleas and lice !