Parasite life cycles - strongyloides stercoralis
4 important questions on Parasite life cycles - strongyloides stercoralis
Summary of free-living life cycle
These develop into infective filariform L3 larvae (direct development)
OR they develop into free-living adult males and females, that mate and produce eggs. From those eggs rhabditiform larvae hatch and become infective filariform larvae.
Summary of parasitic cycle
In the small intestine, the larvae become adult female worms
The female worms live in the small intestine and produce eggs via parthenogenesis, which yields rhabditiform larvae
The rhabditiform larvae can either be passed in the stool of cause autoinfection
How does autoinfection work
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How do the larvae migrate to the intestine?
L3 larvae may also migrate to the intestines via alternate routes
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