Strongyloides fuelleborni Lifecycle

Free-Living Cycle

1) Eggs containing rhabditiform larvae passed in feces.

2) Rhabditiform larvae hatch in environment. 

3) Development to free living adults.

4) Females produce eggs; rhabditiform larvae hatch.

5) Rhabditiform larvae develop into filariform (L3) larvae.

6) Infective filariform larvae penetrate the intact skin of the definitive host.

Parasitic Cycle

7) The filariform larvae migrate by various pathways to the small intestine where they become adults.

8) Parasitic adult female in small intestine

9) Parasitic female produces eggs via parthenogenesis.



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