What are the characteristic names of the Platyhelminthes?
Flukes and tapeworms
What are the characteristic names of the Nematoda?
Roundworms, pinworms, filarial worms
Trematode characteristics.
3 host lifecycle flukes (Bird-snail-fish)
Bird/vertebrate definitive host
Parasitic castration of the snail
Trophic transmission from fish to bird
Tend to live in the liver, intestines, or lungs of their definitive hosts
Turbelleria characteristics.
Mostly free-living flatworms
Some commensal, especially on crustaceans
Fecampiid characteristics.
Entirely parasitic
Parasitic only in larval stage (protelean parasites)
Kronborgia
Larvae enter exoskeleton of amphipod
Grow inside exoskeleton until too big
Explode out and kills host
Monogenea characteristcs
Flat worms
Direct transmission
Ectoparasites
Extremely host specific (great at tracking host through environment)
Mostly on fish
Oral sucker and bifurcated gut tract
Haptor on posterior end - finely tuned to attach to specific host
eggs->oncomiracidum (swimming larvae) ->fish
Myxozoan characteristics?
High host specificity
Very diverse
Annelid intermediate host
Fish definitive host
Cestode characteristics?
Tapeworms -entirely parasitic
No gut tract
Adults are parasites of vertebrate guts
Scolex, neck, proglottids
Nematode characteristics?
Roundworms
Mostly directly transmitted
Extremely abundant both free living and parasites
Complete digestive tract
Created for sucking
Hydrostatic skeleton allows it to move and undulate around
Most have 2 sexes
Goes through several larval stages, usually L3 is infective to definitive host
