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216 results for “Protista”
Fig. 5 in New Finds Of Naked Amoebae (Protista) In Water Reservoirs Of Ukraine
Fig. 5. Thecamoeba sp.: 5–6 — locomotor forms, ×1240.
Fig. 4 in Species Of Naked Amoebae (Protista) New For The Fauna Of Ukraine
Fig. 4. Flamella sp., locomotory forms (a, b, c, d, e, f). x1240.
Fig. 3 in Species Of Naked Amoebae (Protista) New For The Fauna Of Ukraine
Fig. 3. Thecamoeba verrucosa, locomotory forms (a, b, c). x1240.
Fig. 1 in Species Of Naked Amoebae (Protista) New For The Fauna Of Ukraine
Fig. 1. Rhizamoeba sp., locomotory forms (a, b, c). ×1240.
FIGURE 6 in A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean *
FIGURE 6. Phylogenetic position of Leptammina gen. nov. inferred from partial SSU rDNA sequences using maximum likelihood method. Numbers at internal nodes correspond to bootstrap values higher than 75%.
FIGURE 4 in A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean *
FIGURE 4. Leptammina flavofusca gen. et sp. nov. A. Fresh, newly collected, and probably alive individuals, two of them with the aperture directed upwards which makes it possible to see that the peduncular sheath is funnel shaped. B. SEM photograph of entire individual. C. SEM photograph of aperture. D. SEM photograph of broken surface of the cell showing that it is built up by a cytoplasmic network of reticulopodia. E+F. SEM photographs of test surface. Scale bars: A=500 µm, B+E=200 µm, C=20 µm, D+F=2 µm. All individuals are from Stn.102#13 EBS.
FIGURE 3 in A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean *
FIGURE 3. Leptammina flavofusca gen. et sp. nov. Assemblage of individuals from Stn.102#13 EBS. A. Fresh, newly collected, and probably alive individuals. B. The same individuals after fixation in formalin. Scale bars = 1 mm.
FIGURE 5 in A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean *
FIGURE 5. Leptammina flavofusca gen. et sp. nov. A. Section through entire individual with nucleus, nucleoli, nuclear vacuole and exonuclear vacuole. B. Longitudinal section of aperture with peduncular sheath, agglutinated test material and inner organic lining. C. Section through nucleus and exonuclear vacuole, but without nuclear vacuole. D. Longitudinal section of Scale bars = 100 µm.
FIGURE 1 in A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean *
FIGURE 1. Leptammina grisea gen. et sp. nov., A–C are fresh, newly collected individuals and D are individuals fixed in formalin. E. Test wall wrinkles, probably artefacts during handling or fixation. F. Longitudinal section of entire individual with agglutinated test, inner organic lining, peduncular sheath, cytoplasm, foreign particles, and vacuoles. All individuals from Stn. 102#11 AT. Scale bars: A–D = 1 mm; E–F = 100 µm.
FIGURE 2 in A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean *
FIGURE 2. Leptammina grisea gen. et sp. nov., A + B. SEM photograph of agglutinated outer test wall. C. Aperture with peduncular sheath (stomostyle) projected by the cytoplasm along its longitudinal axis; the transition of the peduncular sheath into the inner organic lining is clearly visible at both sides. D. SEM photograph of a broken part of the cell showing pseudopodia (reticulopodia) embedding stercomata, mineral particles, and diatom frustules. E. Nucleus of the granular type with numerous nucleoli, most of the nuclear interior consists of a vacuole. F. Agglutinated lager, inner organic lining, cell content and vacuole. All individuals from Stn. 102#11 AT. Scale bars: A+F=20 µm; B=2 µm; C+E=100 µm; D=5 µm.
FIGURE 1 in An annotated and revised checklist of pleurostome ciliates (Protista: Ciliophora: Litostomatea) from Slovakia, Central Europe
FIGURE 1. Schematic map of Europe with Slovakia highlighted in yellow (A). Map of Slovakia showing the river network (B). Towns are written in ordinary font, water bodies (rivers, water reservoirs and artificial dams) in italics, and countries bordering Slovakia in spaced type.
FIGURE 1 in Description and phylogeny of a new prostomatid, Metacystis similis nov. spec. (Protista, Ciliophora) from the East China Sea
FIGURE 1. Metacystis similis nov. spec.(A, I) and similar congeners (B-H). A. Morphology of a living cell. B. Metacystis striata (Pop. I), from Stokes, 1893. C. Metacystis hyperhalina, from Dietz, 1964. D. Metacystis parastriata, from Chen, 2009. E. Metacystis elongata, from Kahl, 1928. F. Metacystis striata (Pop. II), from Borror, 1972. G. Metacystis striata (Pop. III), from Foissner, 1984. H. the infraciliature of Metacystis striata (Pop. III), from Foissner, 1984. I. Metacystis sp., from Dragesco & Dragesco-Kernéis, 1986. J. Infraciliature of Metacystis similis nov. spec. Cy, cytostome; DK, circumoral dikinetids; FV, food vacuole; Ma, Macronucleus; MK, circumoral monokinetids; arrowhead shows circumoral dikinetids; arrow indicates circumoral monokinetids. Scale bars: 50 µm (Figs. A, B-F, I); 40 µm (Fig. E).
FIGURE 2 in Description and phylogeny of a new prostomatid, Metacystis similis nov. spec. (Protista, Ciliophora) from the East China Sea
FIGURE 2. Photomicrographs of Metacystis similis nov. spec. from living specimens (A–G) and after protargol staining (H–I). A. Living individuals under low magnification. B-D. Lateral view of two typical individuals, arrows show the caudal vacuole. E. Food vacuoles and granules. F. Detail of the body surface; rectangular pellicle meshes. G. Detail of the pellicle structure; ridges on the cell surface (arrowheads). H. General infraciliature. I. Buccal area, double arrowhead refers to the circumoral ciliature. Scale bars: 50 µm (Fig. A); 30 µm (Figs. B, C, H).
FIGURE 3 in Description and phylogeny of a new prostomatid, Metacystis similis nov. spec. (Protista, Ciliophora) from the East China Sea
FIGURE 3. Maximum-likelihood tree inferred from small subunit rRNA gene sequences. Nodal support for branches in the ML and Bayesian inference (BI) trees are marked in order. Black circles indicate full support in all analyses. All branches are drawn to scale. The scale bar corresponds to ten substitutions per 100 nucleotide positions. The newly sequenced species in this work is in bold font and marked by the red arrow.
FIGURE 5 in Phylogenetic positions of four hypotrichous ciliates (Protista, Ciliophora) based on SSU rRNA gene, with notes on their morphological characters
FIGURE 5. Maximum likelihood (ML) phylogenetic tree based on SSU rRNA sequences showing the position of Rigidohymena inquieta, Pattersoniella vitiphila, Notohymena australis and Cyrtohymena (Cyrtohymenides) australis (in bold). Numbers at nodes are the bootstrap values from ML and the posterior probabilities from BI. Accession numbers are provided after species names. Asterisks at nodes indicate disagreement between the two methods. Arrows indicate the first included sequences. Bar, 1 substitution 100nt positions. Urostyla grandis and Anteholosticha multistilata are the outgroup taxa.
FIGURE 3 in Phylogenetic positions of four hypotrichous ciliates (Protista, Ciliophora) based on SSU rRNA gene, with notes on their morphological characters
FIGURE 3. Notohymena australis from life (A–E) and after staining with protargol (F, G). A, B. Ventral (A) and dorsal (B) view of typical individual, showing the cortical granules that arranged in rows on dorsal side (arrowheads in B). C, E. Details of cortical granules on dorsal side, showing the different clusters (arrowheads). D. Lateral view of cortical granules (arrowheads). F. Anterior part of ventral infraciliature, arrowhead depicts the curve at the anterior end of paroral membrane. G. Ventral view of infraciliature, arrowhead refers to the multiple caudal cirri. Scale bars = 40 Μm.
FIGURE 2 in Phylogenetic positions of four hypotrichous ciliates (Protista, Ciliophora) based on SSU rRNA gene, with notes on their morphological characters
FIGURE 2. Photomicrographs of Pattersoniella vitiphila in vivo (A–D) and after staining with protargol (E–G). A, B. Ventral view of two cells, showing the cirri on ventral side (A) and the contractile vacuole (B, arrow); C. Details of membranelles and their basal fibers (arrows); D. Frontal cirri and their well-developed associated basal fibers; E. Details of oral structure, showing the basal fibers of cirri; F. Dorsal kinetids and associated fibers; G. Ventral infraciliature. Scale bars: A, B = 180 Μm, G = 75 Μm.
FIGURE 1 in Phylogenetic positions of four hypotrichous ciliates (Protista, Ciliophora) based on SSU rRNA gene, with notes on their morphological characters
FIGURE 1. Rigidohymena inquieta from life (A, F–K) and after staining with protargol (D, E, L). A. Ventral view of living cells; B, C, L. Ventral (B, L) and dorsal (C) view of infraciliature; D, E. Ventral and dorsal view during later stage of reorganization; F, G. Ventral view of two typical individuals, arrow in G marks the contractile vacuole; G. Showing the crystals in cytoplasm; H. Showing the membranelles of adoral zone (arrowhead) and the transverse cirri (arrow); I. Details of oral structure, arrowhead marks the anteriorly curved Cyrtohymena-like paroral membrane; J. The collar part of adoral zone of membrane; K. Cyst; FC, frontal cirri; LMR, left marginal row; Ma, macronuclei; Mi, micronuclei; PM, paroral membrane; RMR, right marginal row; VC, ventral cirri; TC, transverse cirri. Scale bars = 50 Μm.
FIGURE 4 in Phylogenetic positions of four hypotrichous ciliates (Protista, Ciliophora) based on SSU rRNA gene, with notes on their morphological characters
FIGURE 4. Cyrtohymena (Cyrtohymenides) australis from life (A–D) and after staining with protargol (E–G). A, B. Two typical individuals, showing the body shape and colour. C. Cortical granules on dorsal side, arrows mark the cortical granules that scattered in pellicle. D. Cyst. E. The three anlagen for dorsal kineties of proter (arrowheads). F, G. Four dorsomarginal anlagen of proter (arrowhead, F) and opisthe (arrowhead, G) in the same specimen as in E. Scale bars = 100 Μm (A, B), 30 Μm (D).
FIGURE 6 in Checklist and distribution of ciliates from the family Euplotidae Ehrenberg, 1838 (Protista: Ciliophora: Spirotrichea) in Slovakia, Central Europe
FIGURE 6. Euplotopsis muscicola, Slovak specimens after protargol (A, B) and silver nitrate (C–E) impregnation. (A) Lateral view. (B–D) Ventral views showing nuclear apparatus and cirral as well as silverline pattern. Arrowheads mark the two caudal cirri. (E) Dorsal view showing the ciliary pattern and the muscicola silverline pattern. AZM—adoral zone of membranelles, CC—caudal cirri, DK—dorsal kineties, FV—frontoventral cirri, MA—macronucleus, MC—left marginal cirri, PM—paroral membrane, TC—transverse cirri. Scale bars: 20 µm.
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