Lab 4-Hymenotepsis Flashcards
(19 cards)
Phylum of Hymenolepis
Platyhelminthes
Class of Hymenolepis
Cestoidea
Order of Hymenolepis
Cyclophyllidea
Size of adults
1-100 cm
Common hosts
birds and mammals
Which type of host (definitive or intermediate) does it cause the most damage?
Intermediate
Where do adult tapeworms live?
intestine of homeotherms (birds or mammals)
Definitive hosts
birds and mammals
Are gravid proglottids shed?
Yes
What are shed gravid proglottids called?
Apolytic
How are eggs passed out of definitive hosts?
Feces
What is the intermediate host that eats the eggs?
Arthropods
Where do eggs hatch to release oncospheres?
inside gut
What does the parasite oncosphere develop into in the arthropod?
cysticercoid
Where does the oncosphere develop into cysticercoid?
body cavity
Do oncospheres have hooks?
Yes
What is a cysticercoid?
Solid-bodied larval form of Cestoda
What is a cercomer?
Vestigial structure formed on larval Cestodes that have filament for anchoring
How many suckers are in adult scolex?
4
