Free-living
predators and scavenger
Parasatic
feed by absorbing nutrients provided by their hostsfeed by absorbing nutrients provided by their hosts
Turbellaria
free-living worms
exhibit bilateral symmetry
unsegmented
Dugesia, Planaria
Examples of calss turbellaria
Planaria
Free-living flatworm
Schistosoma japonicum
Blood fluke (Trematoda )
Fasciola gigantica
Liver fluke (Trematoda)
Taenia solium scolex
Pork tapeworm (Cestoda)
Taenia saginata
Beef tapeworm (Cestoda)
Ascaris lumbricoides
Phasmidea
Trichuris trichiura
Aphasmidea
Trichinella spiralis
Aphasmidea
Trematoda
flukes
internal parasites of mollusks and many other groups, including humans
Monogenea
• external parasites, mostly of fish
Dactylogyrus sp.
gill fluke
Class nematoda
intestinal roundworms
Thread
Nemos greek word which means
Wuchereria bancrofti
Filarial worm
Vector: mosquitoes
Infects the lymph nodes
Causes Elephantiasis
Fasciola hepatica
Sheep liver fluke
Clonorchis sinensis
Chinese liver fluke
Paragonimus westermani
Lung fluke