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8 results for “Cyrtohymena”
Fig. 1. Cyrtohymena australis Foissner, 1995 in Morphological redescriptions of three Cyrtohymena ciliates (Ciliophora: Sporadotrichida: Oxytrichidae) new to Korea
Fig. 1. Cyrtohymena australis Foissner, 1995 from live (A, D, E, F) and protargol-impregnated specimens (B, C, G). A, D. Ventral view of a typical individual. B, G. Ventral view of general infraciliature and nuclear apparatus. C. Showing dorsal kineties and caudal cirri. E. Flexible body. F. Cortical granules on dorsal side. Scale bar=100 µm.
Fig. 3 in Morphological redescriptions of three Cyrtohymena ciliates (Ciliophora: Sporadotrichida: Oxytrichidae) new to Korea
Fig. 3. Cyrtohymena muscorum (Kahl, 1932) from live (A, D, E, F) and protargol-impregnated specimens (B, C, G). A and D. Ventral view of a typical individual. B and G. Ventral view of general infraciliature. C and E. Dorsal kineties. F. Red cortical granules. Scale bar=50 µm.
Fig. 2 in Morphological redescriptions of three Cyrtohymena ciliates (Ciliophora: Sporadotrichida: Oxytrichidae) new to Korea
Fig. 2. Cyrtohymena citrina (Berger and Foissner, 1987) from live (A, D, E, F) and protargol-impregnated specimens (B, C, G, H, I). A and D. Ventral view of a typical individual. B, G and I. Ventral view of general infraciliature and nuclear apparatus. C. Dorsal kineties. E and F. Cortical granules on dorsal side. Scale bar=50 µm.
FIGURE 5. A in Morphology and Molecular Phylogeny of the Soil Ciliate Cyrtohymena seorakensis sp. n. (Ciliophora, Hypotricha, Oxytrichidae)
FIGURE 5. A maximum likelihood (ML) tree based on 18S rRNA genes, showing the phylogenetic position of Cyrtohymena seorakensis sp. n. Numbers at the nodes represent the maximum likelihood (ML) bootstrap values and the Bayesian inference (BI) posterior probabilities. Newly obtained sequence is in bold. Sequences belong to the genus Cyrtohymena are shaded in grey. GenBank accession numbers follow species names. Bootstrap values lower than 50% and posterior probabilities in BI lower than 0.5 were not shown. The scale bar represents two nucleotide substitutions per 100 nt.
FIGURE 3 in Morphology and Molecular Phylogeny of the Soil Ciliate Cyrtohymena seorakensis sp. n. (Ciliophora, Hypotricha, Oxytrichidae)
FIGURE 3. Line drawings of protargol-impregnated dividing specimens of Cyrtohymena seorakensis sp. n. Parental cirri and dorsal bristles drawn as outlines, newly formed structure are in black. A, B. Ventral and dorsal view of a mid-divider specimen, showing the frontal-ventral-transverse anlagen (arrows), the undulating membranes anlagen (arrowheads), and the dorsal kineties 1–3 anlagen. Note the fusion of the macronuclear nodules. C, D. Ventral and dorsal view of late divider, showing the frontal-ventral-transverse cirri migrate to their original locations, the dorsomarginal kineties (kineties 5 and 6) anlagen originate very close to the right marginal cirral row, and the new caudal cirri. Note the opisthe has 14 frontal-ventral-transverse cirri differing from all other cells in the preparations (~50 non-dividing cells). E, F. Ventral and dorsal view of very late divider, showing the frontal-ventral-transverse cirri already in their specific locations, the fragmentation of kinety 3 producing kinety 4 (arrows) posteriorly. CC—caudal cirri; DK1–6—dorsal kineties; DM—dorsomarginal kineties; LMR—left marginal row; MA—macronucleus; MI—micronucleus; OP—oral primordium; RMR—right marginal row; TC—transverse cirri. Scale bars: 30 μm.
FIGURE 1 in Morphology and Molecular Phylogeny of the Soil Ciliate Cyrtohymena seorakensis sp. n. (Ciliophora, Hypotricha, Oxytrichidae)
FIGURE 1. Line drawings of Cyrtohymena seorakensis sp. n. from life (A–C) and after protargol impregnation (D, E). A. A representative specimen showing the body shape and the arrangement of the ventral ciliature. B. Optical section of a resting cyst showing the thin, smooth wall (opposite arrowheads), the lipid droplets in the cytoplasm, and the fused macronuclear nodules. C. Dorsal view showing the randomly arranged cortical granules. D, E. Ventral and dorsal view of the holotype specimen showing the infraciliature and the nuclear apparatus. Dotted line in (E) connects dikinetids of dorsal kinety 4. AZM—adoral zone of membranelles; BC—buccal cirrus; CC—caudal cirri; CG—cortical granules; DK1–6—dorsal kineties; EM—endoral membrane; FC—frontal cirri; LD—lipid droplets; LMR—left marginal row; MA—macronucleus; MI—micronucleus; PF—pharyngeal fibers; PM—paroral membrane; PTC—pretransverse cirri; RMR—right marginal row; TC—transverse cirri. Scale bars = 30 μm (A, D, E), 10 μm (B).
FIGURE 4 in Morphology and Molecular Phylogeny of the Soil Ciliate Cyrtohymena seorakensis sp. n. (Ciliophora, Hypotricha, Oxytrichidae)
FIGURE 4. photomicrographs of protargol-impregnated dividing specimens of Cyrtohymena seorakensis sp. n. A. Ventral view of a mid-divider specimen, showing the frontal-ventral-transverse anlagen (arrows) and the undulating membranes anlagen (arrowheads). B. Ventral view of late divider, showing the frontal-ventral-transverse cirri migrate to their original locations. Note the opisthe is the only specimen observed with less number (only 14) of frontal-ventral-transverse cirri in all preparations. C, D. Ventral and dorsal view of very late divider, showing the frontal-ventral-transverse cirri already in their specific locations, and the newly formed caudal cirri (arrowheads) at the end of kineties 1, 2, and 4. CC—caudal cirri; DK1–6—dorsal kineties; DM—dorsomarginal kineties; LMR—left marginal anlage; MA—macronucleus; MI—micronucleus; OP—oral primordium; PTC—pretransverse cirri; RMR—right marginal anlage; TC—transverse cirri. Scale bars: 30 μm.
FIGURE 2 in Morphology and Molecular Phylogeny of the Soil Ciliate Cyrtohymena seorakensis sp. n. (Ciliophora, Hypotricha, Oxytrichidae)
FIGURE 2. Photomicrographs of Cyrtohymena seorakensis sp. n. from life (A–E), after protargol impregnation (F, G), and in the scanning electron microscope (H–J). A, B. Ventral and lateral view of a free swimming specimen under low magnification, showing the body outline, the distinctly convex dorsal surface (arrows in B), and the brownish color due to the crystals in the cytoplasm. C, D. Dorsal views showing the yellow, randomly scattered cortical granules (arrows). E. Optical section of a cyst showing the thin wall (opposite arrowheads) and the fused macronuclear nodules. F, G. Ventral and dorsal view of the holotype specimen showing the infraciliature and nuclear apparatus. H–J. Ventral views showing the arrangement of frontal-ventraltransverse cirri (H), the shape of the paroral membrane (arrows in H and I), and the invariably four transverse cirri (arrowheads in J). AZM—adoral zone of membranelles; BC—buccal cirrus; CC—caudal cirri; CV—contractile vacuole; DK1–6—dorsal kineties; FC—frontal cirri; LD—lipid droplets; LMR—left marginal row; MA—macronucleus; MI—micronucleus; PF—pharyngeal fibers; PM—paroral membrane; PTC—pretransverse cirri; RMR—right marginal row. Scale bars: 30 μm (A–C, F–H), 20 μm (D, I, J), 10 μm (E).
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