FIGURES 6–9 in Ultrastructural observations on the development of Ceratomyxa aegyptiaca (Myxozoa: Bivalvulida) infecting Solea aegyptiaca (Pleuronectiformes: Soleidae) from Tunisian coastal lagoon

FIGURES 6–9. Capsulogenesis of Ceratomyxa aegyptiaca. Fig. 6. Detail of two capsulogenic cells (Cc) in different stages of maturation. One capsulogenic cell (Cc) has a mature polar capsule (Pc). The second capsulogenic cell shows the sections of external tube (Et), a capsular primordium (Cp) and nucleus (CNu) in their cytoplasm. Sutural line (S) can be observed. Fig. 7. Detail of a capsulogenic cell showing a polar capsule with twisted appearance of polar filament (Pf). The apical side of the mature spore was surrounded by fibrous material (arrows) between the capsulogenic cell and the valve (V). Note the presence vacuoles (V) in the cytoplasm of the capsulogenic cell (Cc). Fig. 8. Longitudinal section of mature polar capsule (Pc) with its polar filament (arrows) showing an electron dense matrix (*) an outer electron-dense layer (OL) and an inner electron-lucent layer (IL). Note the channel for filament discharge (D) and externally, a surrounding valve (V) can be seen. Fig. 9. A section of spore showing the mature polar capsule (Pc), the opening for the extrusion of the polar filament (Op), two sporoplasm nucleus (SpNu) and one flattened valvogenic nuclei (VNu).