31. Fusion of a macrogamont and a microgamont creates a zygote which develops into an oocyst . 32. This cell membrane becomes folded and the nuclei sink in ( the oocyst stage ). 33. Within each oocyst there are 8 or more free sporozoites and a large oocyst residuum. 34. Within each oocyst there are 8 or more free sporozoites and a large oocyst residuum. 35. The oocyst is somewhat unusual with a double layered wall which surrounds up to 18 sporocysts. 36. There are 16 sporocysts per oocyst ( heccaidesporocystid ) with 4 sporozoites ( tetrazoic ) in each. 37. Zygotes are produced by the fusion of two gametes and these in turn become surrounded by an oocyst wall. 38. The oocyst must be attacked from multiple layers as it is formed of two walls : proteins and lipids. 39. The fertilized macrogamete forms a zygote that in its turn forms an oocyst that is normally released from the body. 40. The resulting ookinete traverses the mosquito gut wall and encysts on the exterior of the gut wall as an oocyst .
