Life cycles of the two chytrid species.

<p>The six different life stages of the two chytrid species, <i>Rhizosiphon crassum</i> (A) and <i>Rhizosiphon akinetum</i> (B) parasitizing the cyanobacterium <i>Anabaena macrospora</i> from the productive Lake Aydat: Stage1 : Encystment; Stage 2 : Prosporangium; Stage 3 : Expansion stage; Stage 4 : Budding; Stage 5 : Mature stage; Stage 6 : Empty stage. The six life stages were grouped into three different phases: Young phase (Stages 1 and 2), Maturation phase (Stages 3, 4 and 5) and Empty phase (Stage 6). Prosporangium (P) and Papilla (Pa).