Moving beyond eggs-in/eggs-out   That chaurus are ovipositors is beyond question at this point.  They are dumping eggs (and maybe other things) into the breeder, and then their part is (mostly) done.   The chaurus may decide to protect the breeder, or may not care.  There is an open question of whether a living breeder is useful after the fact.  It is possible that the chaurus simply kills the breeder after impregnation.  Every egg pile we see in the game may have originally