Active and concrete evidences about sexual reproduction and life cycle in the parasitic generation of Strongyloides stercoralis in human host
Background: Strongyloides stercoralis was believed to have two kinds of life cycle. One of them was an internal parthenogenetic life cycle that constituted the parasitic generation. Some authors also stated that this parasitic generation of the internal life cycle used to reproduce only by protandrogony (i.e., hermaphroditism). The second type of life cycle was the external sexual cycle, interacting among free-living worms that represented the free-living generation in soil. The key objectives of this study were to: • verify the type of reproduction in the parasitic generation of S.