Platytheminthes II Flashcards
Class Tuberllaria
-marine, freshwater, and terrestrial
-mostly predators
-monoceious (hermaphroditic, cross fertilize with each other)
-in the water they have bright colors for toxicity
-small ones move with cilia
-bigger ones undulate
Polycladia
- multiple branches of intestines
- marine forms
- folded pharynx
- endolecithal eggs
Tricladia
- three branches of intestines
- one anterior
- two posterior-lateral
- freshwater and terrestrial
- straw-like pharynx
- ectholecitha
How are parasites adapted to parasitism?
-they form a cyst like structure to protect it from the stomach’s acid
-changes to the epidermis to have an increase in surface area for nutrition absorption
-most have suckers or hooks to attach to the host so they don’t get based away
Subclass Digenea
-two different hosts
-one is intermediate and definitive
- vertebrae and invertebrate
- prey and predator
- cycle ends with the predator and prey
- changes the developmental pathway to make it more easy to prey on
What and where are schistosoma mansion usually found?
- africa and asia
- blood fluke
- blood vessels of the intestine wall
- diecious
- causes swimmers itch
- have to be infected by both male and female: “cuddle buddy system”
- cercaria has have two tails that burrow straight into the their definitive host
Class Monogena
- monoecious
- one host, ectoparasites
- dont mature adults until larva meets another larva
- once they meet, they use and grow sexual mature
- not very damaging
- founds in fish and frogs, and eye on the hippo
- density dependent issue
- commercial fisherie
What are synamorphies of class monogenea?
opisthaptors which are bases used for attachment
What are custodies
- Cestaodes
- two host life cycles
- dont have mouths
- sections to their bodies
- attaches with the scolex
- microtriches: small hair which help absorb nutrients
Where is Tania saginata most common in?
humans from undercooked beef
