Here is the life cyle summary. Hope it helps.
Table in excel format and diagrams are at the bottom
of the page.
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Higher Classification |
Parasite |
Stage infective to
intermediate |
Intermediate Host |
Stages in Intermediate |
Stage infective to definitive |
Definitive Host |
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Monogenea |
Diplozoon |
No
intermediate |
No
intermediate |
No
intermediate |
oncomiracidium |
fish |
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Monogenea |
Gyrodactylus |
No
intermediate |
No
intermediate |
No
intermediate |
juvenile |
fish |
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Digenea |
Clonorchis sinensis |
miracidium |
snail
then fish |
sporocyst,
redia/ cercaria leave and infect fish |
metacercaria |
humans |
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Digenea |
Schistosoma mansoni (or japonicum) |
miracidium |
Biomphalaria (snail) |
sporocyst,
redia |
free
swimming cercaria |
humans |
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Digenea |
Leuchocloridium macrostomum |
miracidium |
snail |
sporocyst,
redia, cercaria |
cercaria |
birds |
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Cestoda |
Taenia saginata |
oncosphere |
cow |
cystecercus |
cystecercus |
humans |
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Cestoda |
Linstowia |
oncosphere |
beetle |
cystecercus |
cystecercus |
Marsupials
(Thylamys) |
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Acanthocephala |
Macracanthorhyncus hirudinaceus |
acanthor |
Scarabaeidae
(beetle) |
acanthella,
cystacanth |
cystacanth |
pig/people |
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Nemata |
Dracunculus medinensis |
live
juveniles shed in water |
Cyclops(microcrustacean) |
juvenile |
Juvenile
in Cyclops ingested by drinking |
humans |
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Nemata |
Loa loa |
juveniles
in blood |
Chrysops (deer fly) |
juvenile |
Juvenile
transmitted in another bite |
humans |
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Nemata |
Ascaris lumbricoides |
No
intermediate |
No
intermediate |
No
intermediate |
eggs
ingested |
humans |
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Nemata |
Enterobious vermicularis |
No
intermediate |
No
intermediate |
No
intermediate |
eggs
ingested or retroinfection |
humans |
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Nemata |
Steinernema |
No
intermediate |
No
intermediate |
No
intermediate |
juvenile,
with bacterial food source |
crickets
and other agricultural pests |
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Nemata |
Trichinella |
adult
in intestinal epithelium juvenile in nurse cells in muscle |
humans/
pigs/ carnivores. Same individual serves as both intermediate and definitive |
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Life cycles in Excel