Fig. 1 in The marine myxosporean Sigmomyxa sphaerica (Thélohan, 1895) gen. n., comb. n. (syn. Myxidium sphaericum) from garfish (Belone belone (L.)) uses the polychaete Nereis pelagica L. as invertebrate host

Fig. 1 Plasmodia and myxospores of S. sphaerica from the gallbladder of B. belone. a Plasmodium (flattened) without visible indication of sporogony, showing distinction between ecto- and endoplasm. b Sporulated plasmodium (flattened) showing spores in valvular view, vacuolate appearance and refractive granules. Note that any polar capsule lengths taken in valvular view may be erroneously short due to their oblique orientation in the spores. c Spore in sutural view. d, e Spores as seen in the focal plane of one polar capsule, showing polar filament coils and the valvular extensions associated with the protruding part of the capsules. Scale bars a, b 10 μm, c, d 5 μm