Human Parasitic Helminthes

Platyhelminthes Nemathelminthes Parasitic Helminths NEMATODA (Roundworms) TREMATODA (Flukes) CESTODA (Tapeworms)

Class Trematoda Phylum Platyhelminthes Subclass Digenea

(Monoecious)

Asexual Generation Multiplication of sporocyst or redia in 1st I.H.Reproduction & Life CycleAll flukes are oviparous (lay eggs)Eggs of all flukes, except for Schistosoma spp. areoperculated. Sexual Generation Production of eggs by adults in final host

1st Intermediate Host2nd Intermediate Host Crustacean Water plants Fishes Insects Sporocyst Miracidium Cercaria Redia General Trematode Life CycleFinal Host MammalsHumanAdult wormEgg

Intestinal Flukes Fasciolopesis buski Metagonimus yokogawi Heterophyes heterophyes Echinostoma ispp. Gastrodiscoides hominis Lung Flukes Paragonimus westermani Blood Flukes Schistosoma mansoni Schistosoma japonicum Schistosoma haematobium Schistosoma mekongi Schistosoma intercalatum Liver Flukes Clonorchis sinensis Opisthorchis felineus Opisthorchis viverrini Fasciola hepatica Dicrocoelium dentriticum Trematodes Eurytrema spp.