Lab 3-Dicrocoelium Flashcards
Phylum of Dicrocoelium
Platyhelminthes
Class of Dicrocoelium
Digenea
Order of Dicrocoelium
Plagiorchiformes
Dicrocoelium are called what in everyday terms?
liver flukes
Where do adult Dicrocoelium live?
Bile ducts of herbivorous mammals
How are eggs passed out of host?
Through feces
Are the eggs embryonated as they pass through host?
Yes
When do eggs hatch?
When eaten by snail
How many intermediate host(s) does Dicrocoelium have and what are they?
- 2
- snails and ants
Where do mother sporocysts form?
Digestive gland of snail
Where do cercariae accumulate in snail?
Respiratory chamber
How do ants get infected with cercariae?
They ingest slime balls left by snail
Where do cercariae encyst in ant?
- body cavity
- subesophageal ganglion
What happens to ants that have cysts in their subesophageal ganglion?
They are forced to find vegetation and climb upwards at night to be eaten by herbivores in the early morning
Does Dicrocoelium have separate sexes?
No, they are hermaphrodites
