Figure 3 in Morphology and molecular phylogeny of three new oligotrich ciliates (Protozoa, Ciliophora) from the South China Sea

Figure 3. Strombidium tropicum sp. nov. from life (A–D, J–P) and after protargol impregnation (E–I, Q–V). A, ventral view of a representative specimen. B, J–L, different body shapes, arrow marks the apical protrusion. C, P, resting extrusomes. D, swimming trace. E, detail of dikinetids, arrow and arrowhead mark the argyrophilic fibres associated with dikinetids in girdle and ventral kineties, respectively. F, detail of ventral membranelles and argyrophilic fibres. G–I, ventral (G, H) and dorsal (I) views showing the ciliary pattern and the macronucleus, arrow marks the argyrophilic fibres associated with adoral membranellar zone and arrowhead notes the pharyngeal fibres. M, ventral view of a mid-divider, arrow shows the oral primordium. N, apical view showing the adoral zone of membranelles. O, dorsal view showing the distribution of extrusomes (arrow). Q, the macronucleus. R, U, ventral views of adoral zone of membranelles, arrow marks the argyrophilic fibres. S, V, ventral and dorsal views of posterior portion of cells to show the infraciliature, arrow marks the extrosomes and arrowhead notes the hemitheca. T, detail of girdle kinety, arrow shows the argyrophilic fibres and arrowhead marks the cilium. AM, anterior membranelles; E, extrusomes; EM, endoral membrane; GK, girdle kinety; Ma, macronucleus; VK, ventral kinety; VM, ventral membranelles. Scale bars: 50 μm (D); 10 μm (A, B, G–L, N, O, Q), 5 μm (C, F, M, P, R, S, U, V), 2 μm (E, T).