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216 results for “Protista”
Fig. 4 in Taxonomy and morphology of four "ophrys-related" scuticociliates (Protista, Ciliophora, Scuticociliatia), with the description of a new genus, Paramesanophrys gen. nov.
Fig. 4. Comparisons among different buccal apparatus patterns of Paramesanophrys gen. nov. and some related genera; arrows in A–J show different positions to which PM extends anteriorly and highlighted structures in A–J mark M2. A. Paramesanophrys typica gen. et sp. nov. (from the present work). B. Mesanophrys carcini (Grolière & Léglise, 1977) Small & Lynn in Aescht, 2001 (from Song & Wilbert 2000). C. Uronema marinum Dujardin, 1841 (from Song et al. 2009). D. Uronemella filificum (Kahl, 1931) Song & Wilbert, 2002 (from Song & Wilbert 2002). E. Metanophrys sinensis Song & Wilbert, 2000 (from Song & Wilbert 2000). F. Anophryoides haemophila Cawthorn et al., 1996 (from Cawthorn et al. 1996). G. Philasterides armatalis Song, 2000 (from Song 2000). H. Paranophrys marina Thompson & Berger, 1965 (from Song et al. 2002). I. Paralembus digitiformis Kahl, 1931 (from Song & Wilbert 2000). J. Cohnilembus verminus (Müller, 1786) Kahl, 1933 (from Song 2000). Abbreviations: M1–3 = membranelles 1, 2 and 3; PM = paroral membrane; Sc = scutica.
Fig. 7 in Taxonomy and morphology of four "ophrys-related" scuticociliates (Protista, Ciliophora, Scuticociliatia), with the description of a new genus, Paramesanophrys gen. nov.
Fig. 7. Metanophrys similis Song et al., 2002, in vivo (A–F) and after protargol staining (G–J). A. Ventral view of a typical individual. B–D. Ventral views of three individuals; arrowheads in D mark somatic cilia. E. Food vacuole (arrow). F. Posterior region; arrow shows caudal cilium. G, I. Ventral views, to show detailed structure of the buccal area. H. Dorsal view; arrow shows monokinetids, arrowhead marks dikinetids. J. Macronucleus. Abbreviations: M1–3 = membranelles 1, 2 and 3; Ma = macronucleus; PM = paroral membrane. Scale bars: A–D = 30 μm.
Fig. 6 in Taxonomy and morphology of four "ophrys-related" scuticociliates (Protista, Ciliophora, Scuticociliatia), with the description of a new genus, Paramesanophrys gen. nov.
Fig. 6. Metanophrys sinensis Song & Wilbert, 2000, in vivo (A–D, G) and after protargol (E–F, I–J) or silver nitrate (H) staining. A. Ventral view of a typical individual. B. Ventral view of another individual; arrowheads mark somatic cilia. C. Ventral view; arrowhead exhibits buccal field. D. Notched pellicle (arrowhead). E. Detailed structure of buccal area. F. Individual in morphogenesis, to show buccal apparatus. G. Ventral view, showing bar-shaped crystal (arrowhead). H. Detail of somatic kinetids. I. Dikinetids of scutica (arrowheads). J. Posterior region; arrowheads show monokinetids of somatic kineties. Abbreviations: M1–3 = membranelles 1, 2 and 3; PM = paroral membrane. Scale bars: A–B = 15 μm.
Fig. 5 in Taxonomy and morphology of four "ophrys-related" scuticociliates (Protista, Ciliophora, Scuticociliatia), with the description of a new genus, Paramesanophrys gen. nov.
Fig. 5. Mesanophrys carcini Small & Lynn in Aescht, 2001, in vivo (A–D) and after protargol staining (E–G). A. Ventral view of a representative individual; arrow shows contractile vacuole. B–D. Ventral views of four individuals; arrow in B shows caudal cilium and arrow in D marks food vacuole. E–F. Ventral views, detailed structure of buccal area. G. Dorsal view; arrow indicates somatic kinety. Abbreviations: M1–3 = membranelles 1, 2 and 3; Ma = macronucleus; PM = paroral membrane; Sc = scutica. Scale bars: A–D = 30 μm; E–G = 5 μm.
Fig. 2 in Taxonomy and morphology of four "ophrys-related" scuticociliates (Protista, Ciliophora, Scuticociliatia), with the description of a new genus, Paramesanophrys gen. nov.
Fig. 2. Paramesanophrys typica gen. et sp. nov., from life (A–F) and after protargol staining (G–I). A. Ventral view of a representative individual. B. Different body shapes. C. Changing shapes of buccal field of the same individual. D. Movement trace. E. Food granules. F. Part of pellicle, to show extrusomes. G–H. Ventral (G) and dorsal (H) views of the same specimen (holotype), showing infraciliature and nuclear apparatus. I. Detailed structure of the buccal area. Abbreviations: M1–3 = membranelles 1, 2 and 3; Ma = macronucleus; PM = paroral membrane; Sc = scutica. Scale bars: A = 30 μm; B = 40 μm.
Fig. 1. Sampling sites. A in Taxonomy and morphology of four "ophrys-related" scuticociliates (Protista, Ciliophora, Scuticociliatia), with the description of a new genus, Paramesanophrys gen. nov.
Fig. 1. Sampling sites. A. Coastal waters of the Yellow Sea at Qingdao, Shandong province. B. A coastal mariculture-region in Zhanjiang, Guangdong province. C. Coastal waters of Daya Bay, Guangdong province.
Fig. 5 in Morphological versus molecular delimitation of ciliate species: a case study of the family Clevelandellidae (Protista, Ciliophora, Armophorea)
Fig. 5. Clevelandella hastula (Kidder, 1937). Vietnamese specimens isolated from Panesthia angustipennis cognata Bey-Bienko, 1969 from life (A, F–H) and after protargol impregnation (B–E). A–E. Ventral view of specimens with well-preserved body shape. Arrows mark the proximal end of the peristomial opening, black arrowheads mark the proximal end of the adoral zone of membranelles. F. Ventral view, showing general organization of body. G–H. Ciliary pattern of ventral and dorsal sides. Conspicuous cilia of adoral membranelles emerge out of the peristomial opening in (G). Asterisks indicate the position of the ciliary whorl (posterior suture), arrow marks the proximal end of the peristomial opening. Scale bars = 30 μm.
Fig. 10 in Morphological versus molecular delimitation of ciliate species: a case study of the family Clevelandellidae (Protista, Ciliophora, Armophorea)
Fig. 10. Clevelandella parapanesthiae (Kidder, 1937). Vietnamese specimens isolated from Panesthia angustipennis cognata Bey-Bienko, 1969 after protargol impregnation. A–J. Variability of body shape and size as well as of the nuclear (shaded grey) and oral (shaded yellow) apparatus. Scale bar = 30 μm.
Fig. 1 in Morphological versus molecular delimitation of ciliate species: a case study of the family Clevelandellidae (Protista, Ciliophora, Armophorea)
Fig. 1. Clevelandella constricta (Kidder, 1937). Vietnamese specimens isolated from Panesthia angustipennis cognata Bey-Bienko, 1969 from life (A) and after protargol impregnation (B–N). A. Ventral view of a representative specimen, length 120 μm. B–K. Variability of body shape and size as well as of the nuclear (shaded grey) and oral (shaded yellow) apparatus. L. Semi-schematic diagram, showing the general body organization. Black double arrowhead marks densely packed, oval, refractile bodies (probably paraglycogen platelets). M–N. Ciliary pattern of ventral and dorsal sides. Arrow marks the right suture, black arrowheads indicate the position of the ciliary whorl (posterior suture). O. Prokaryotes freely scattered throughout the cytoplasm posterior to the macronucleus. P. Detail of oval, refractile bodies (probably paraglycogen platelets) anterior to the macronucleus. Scale bars = 50 μm.
Fig. 3 in Morphological versus molecular delimitation of ciliate species: a case study of the family Clevelandellidae (Protista, Ciliophora, Armophorea)
Fig. 3. Clevelandella constricta (Kidder, 1937). Vietnamese (A, E–G) and Cambodian (D) specimens isolated from Panesthia angustipennis cognata Bey-Bienko, 1969, as well as Thai I specimens (B– C) isolated from Panesthia angustipennis angustipennis (Illiger, 1801) from life (A, D–G) and after protargol impregnation (B–C). A–C. Ventral view of specimens with well-preserved body shape. D–E. Ventral view, showing the general body organization. Arrows mark oval, refractile bodies anterior to the macronucleus, black arrowheads mark the proximal end of the adoral zone of membranelles, white arrowheads denote the karyophore attached to the right and left body margins and black double arrowhead marks the canal leading from the contractile vacuole to the cytopyge. F–G. Ciliary pattern of ventral and dorsal sides. Asterisks mark the position of the ciliary whorl (posterior suture), white double arrowhead denotes the right suture. Scale bars: A–C, E–G = 50 μm; D = 20 μm.
Fig. 11 in Morphological versus molecular delimitation of ciliate species: a case study of the family Clevelandellidae (Protista, Ciliophora, Armophorea)
Fig. 11. Clevelandella parapanesthiae (Kidder, 1937). Vietnamese specimens (A–B, E–G) isolated from Panesthia angustipennis cognata Bey-Bienko, 1969 and Thai I specimens (C–D) isolated from Panesthia angustipennis angustipennis (Illiger, 1801) from life (A, E–G) and after protargol impregnation (B–D). A–D. Ventral views of specimens with well-preserved body shape. Black arrowheads mark the proximal end of the adoral zone of membranelles. E–G. A strongly squeezed specimen by pressure of the cover slip, causing the body to become markedly wider and the notch at the base of the peristomial projection to be lost. The general body organization is shown in (E), the ciliary pattern of ventral and dorsal sides is shown in (F) and (G). Asterisks mark the position of the ciliary whorl (posterior suture), white arrowhead denotes the karyophore attaching to right body margin, white double arrowhead denotes the right suture. Scale bars = 30 μm.
Figure 10 in Three new species of deep-sea Gromia (Protista, Rhizaria) from the bathyal and abyssal Weddell Sea, Antarctica
Figure 10. Maximum-likelihood tree of Weddell Sea gromiids (shaded boxes), Arabian Sea gromiids (Aranda da Silva et al., 2006), and Gromia oviformis from shallow-water localities (Burki et al., 2002), based on partial small subunit ribosomal DNA (SSU rDNA) sequences. The numbers at the nodes represent the percentage of bootstrap support,> 50%. Weddell Sea gromiids are grouped into three distinct clades (A, B, and C).
Figure 3 in Three new species of deep-sea Gromia (Protista, Rhizaria) from the bathyal and abyssal Weddell Sea, Antarctica
Figure 3. Gromia marmorea sp. nov. A, B, scanning electron microscope (SEM) photographs of wall consisting of multiple layers. C, transmission electron microscope (TEM) photograph of 'honeycomb membrane' layer. D, detail of (C).
Figure 4 in Three new species of deep-sea Gromia (Protista, Rhizaria) from the bathyal and abyssal Weddell Sea, Antarctica
Figure 4. Gromia marmorea sp. nov. scanning electron microscope (SEM) photographs. A, oral capsule (the arrow indicates the direction of the photograph sequence shown in panels Ci–Civ). B, perforations of the test surface. Ci–Civ, sequence of photographs over a distance of 250 Mm showing test pores (each pore is highlighted by a white circle), with the number of pores increasing with increasing distance from the aperture (from left to right); 4000¥ magnification. D, E, interior of broken specimen showing stercomata and other structures.
Figure 1 in Three new species of deep-sea Gromia (Protista, Rhizaria) from the bathyal and abyssal Weddell Sea, Antarctica
Figure 1. Stations sampled in the Weddell Sea during the RV Polarstern cruise, leg ANT-XXII/3, from 22nd January to 6th April, 2006. Filled circles indicate sample stations for Gromia marmorea sp. nov. (133#2) at 1584-m depth, Gromia winnetoui sp. nov. (121#7) at ~2600-m depth, and Gromia melinus sp. nov. (81#8 and 80#9) at 3101- and 4392-m depth, respectively.
Figure 2 in Three new species of deep-sea Gromia (Protista, Rhizaria) from the bathyal and abyssal Weddell Sea, Antarctica
Figure 2. Gromia marmorea sp. nov. A–D, reflected-light photographs of preserved specimens, from station 133#2, 1584-m depth. Photographed in water. A, holotype, reg. no. SMF XXVII 7398, spherical morphotype. B, paratype, reg. no. SMF XXVII 7399, droplet-shaped morphotype. C, paratype, reg. no. SMF XXVII 7399, oval morphotype. D, detail of oral capsule. E, scanning electron microscope (SEM) photograph of oral capsule. F, unfixed specimens.
Figure 6 in Three new species of deep-sea Gromia (Protista, Rhizaria) from the bathyal and abyssal Weddell Sea, Antarctica
Figure 6. Gromia melinus sp. nov. A, reflected light photograph, station 80#9, at 3103-m depth. B, transmission electron microscope (TEM) photograph of 'honeycomb membrane' layer at a 5000¥ magnification. C, TEM photograph at a 50 000¥ magnification. D, TEM photograph at a 100 000¥ magnification.
Figure 7 in Three new species of deep-sea Gromia (Protista, Rhizaria) from the bathyal and abyssal Weddell Sea, Antarctica
Figure 7. Gromia winnetoui sp. nov. A–D, reflected-light photographs, station 121#7, ~2600-m depth. A, holotype, reg. no. SMF XXVII 7402, agglutinated specimen. B, paratype, reg. no. SMF XXVII 7403, elongate oval specimen (the circle indicates the oral capsule). C, D, irregularly shaped specimen (the circles indicate the oral capsules).
Figure 9 in Three new species of deep-sea Gromia (Protista, Rhizaria) from the bathyal and abyssal Weddell Sea, Antarctica
Figure 9. Gromia winnetoui sp. nov. A–D, transmission electron microscope (TEM) photographs of the test wall, including the 'honeycomb membrane' layer (hm), station 121#7, ~2600-m depth.
Figure 5 in Three new species of deep-sea Gromia (Protista, Rhizaria) from the bathyal and abyssal Weddell Sea, Antarctica
Figure 5. Reflected-light photographs of Gromia melinus sp. nov. from station 80#9, at 3103-m depth (A–C), and station 81#9, at 4392-m depth (D); photographed in water. A, paratype, reg. no. SMF XXVII 7401, subtriangular morphotype. B, holotype, reg. no. SMF XXVII 7400, droplet-shaped morphotype. C, asymmetrically irregular morphotype. D, spherical morphotype with two oral capsules. E, scanning electron microscope (SEM) photograph of the polygonal pattern on the wall surface. F, SEM photograph of agglutinated clay particles on the surface of the specimen.
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