Phyla of Animalia
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Porifera
Classes
Body Plan
Cell Types
Important Terms
Cnidaria
Classes
General Characteristics
Important Terms
Ctenophora
Platyhelminthes
General Characteristics
Class Turbellaria
Class Monogenea
Class Trematoda
Class Cestoidea
Important Terms
Mollusca
General Characteristics
Class Gastropoda
Class Bivalvia
Class Cephalopoda
Other Classes of Mollusca
Important Terms
Annelida
General Characteristics
Class Polychaeta
General Characteristics
Monogenetic flukes
Have oncomiracidium larvae (cilliated larvae)
one life cycle form in only one host
mostly ectoparasites on vertebrates (usually on fish, occasionally on turtles, frogs and, squids)
adults produce and release eggs that have one or more sticky thread, that attaches eggs to the fish gills
they attach to gills and feed on epithelial cell, mucus , and blood
Opisthaptor:
a large posterior attachment organ that facilitates attachments
About 1100 species
Ex: disocotyle, gyrodactylus, polystoma
Taken from: http://www.eplantscience.com/index/general_zoology/phylum_platyhelminthes.php