Lab 5-Moniliformis

Question 1

What does organism does this parasitize?

Answer 1

rats/rodents

Question 2

Can it alter host behaviour?

Answer 2

yes

Question 3

Separate sexes?

Answer 3

yes

Question 4

Where do adults live?

Answer 4

rodents intestines

Question 5

Are eggs embryonated when released?

Answer 5

yes

Question 6

What is the intermediate host?

Answer 6

cockroach

Question 7

What do acanthors have that help them penetrate the intermediate host’s gut?

Answer 7

blade-like hooks

Question 8

Does acanthella have proboscis already?

Answer 8

yes

Question 9

Where does acanthella mature?

Answer 9

hemocoele

Question 10

Cystacanth

Answer 10

larval stage of Acanthocephala that precedes adult, usu. encysted

Question 11

Do adult moniliformis have internal or external segmentation?

Answer 11

external only

Question 12

Ovarian balls

Answer 12

fragments of ovary

Question 13

uterine bell

Answer 13

collects eggs floating in female body cavity and passes them to selector apparatus

Question 14

selector apparatus

Answer 14

directs immature eggs back into pseudocoele and passes mature eggs into uterus