Phylum Acanthocephala Flashcards
1
Q
What are some features of worms in this phylum?
A
- thorny headed worm
- proboscis with hooks
- parasites of digestive tract
2
Q
What are the two families that belong in this phylum?
A
- family oligacanthorhynchidae
- family polymorphydae
3
Q
What are the two genuses of family oligacanthorhynchidae?
A
- macracanthorhynchus
- oncicola
4
Q
What are the genus in the polymorphydae family?
A
- polymorphus
5
Q
What are some features of macracanthorhynchus hirudinaceus?
A
- small intestine of pigs
- transversely flattened body and tapered towards the posterior end.
- proboscis have 6 transverse rows teeth.
- eggs have three layers and second shell is brown and pitted.
- embryonated eggs
IH = beetles
6
Q
What is the macracanthorhynchus hirudinaceus life cycle?
A
- embryonated eggs are shed in faeces then ingested by beetles where they become L3.
pigs then become infected after ingestion of beetles.
7
Q
What are features of oncicola pomatostomi?
A
- in cat small intestine
- DH is infected after eating paratenic birds
8
Q
What are some festures of oncicola canis ?
A
- small intestine of dogs and cats
9
Q
What are some features of polymorphus boschadis?
A
- in ducks, swans and fowl
- small intestine
IH fresh water shrimp
