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216 results for “Protista”
Fig. 13 in A holistic approach to inventory the diversity of mobilid ciliates (Protista: Ciliophora: Peritrichia)
Fig. 13 SIMMAP reconstruction of two extrinsic traits of mobilids based on 20,000 stochastic character maps simulated under the ER model. Relative proportions of characters states were mapped onto
Fig. 14 in A holistic approach to inventory the diversity of mobilid ciliates (Protista: Ciliophora: Peritrichia)
Fig. 14 Chronogram of the order Mobilida based on nuclear 18S rRNA gene sequences. The 95% credibility intervals of divergence time estimates are shown as blue bars at nodes. Divergence times were estimated with the RelTime algorithm, maximum likelihood method, GTR + I + Γ5 evolutionary model, local clock, and four calibration points. Note that the last common ancestor of the order Mobilida very likely emerged about 631‒415 Ma when most of today's landmass was included in the supercontinent Gondwana. Diversification of mobilids into urceolariids and trichodinids as well as the early radiation of both groups was completed before ca. 180
Fig. 10 in A holistic approach to inventory the diversity of mobilid ciliates (Protista: Ciliophora: Peritrichia)
Fig. 10 Secondary structure of the 18S rRNA molecule of Trichodina unionis. The helix number system follows Lee and Gutell (2012) and Petrov et al. (2014). Most species-specific mutations are situated in
Fig. 8 in A holistic approach to inventory the diversity of mobilid ciliates (Protista: Ciliophora: Peritrichia)
Fig. 8 Trichodina baltica after dry silver nitrate (A, B) and protargol (C–I) impregnation. A Overview of the adhesive disc. B, D, E, H Adoral ciliary spiral. C Adoral view, showing the structure of the ciliary wreath and peripheral pins. F, G Lateral overviews, showing the fine structure of the adoral ciliary spiral, infundibular peniculi, and
Fig. 1 in A holistic approach to inventory the diversity of mobilid ciliates (Protista: Ciliophora: Peritrichia)
Fig. 1 Origin of mobilids with molecular data available in GenBank. The color of points refers to the higher taxonomic group of host organisms from which mobilids were isolated (for color code, see the
Fig. 4 in A holistic approach to inventory the diversity of mobilid ciliates (Protista: Ciliophora: Peritrichia)
Fig. 4 Trichodina unionis in vivo. A Detached Trichodina in a search for host tissues. B–D Lateral overviews, showing the very broadly cylindrical to campanulate body with bulged epistomial disc. E, G, I, J Overviews of the aboral side, showing the denticle ring, central granules, and radial pins. Note the posterior projection of the denticle
Fig. 7 in A holistic approach to inventory the diversity of mobilid ciliates (Protista: Ciliophora: Peritrichia)
Fig. 7 Trichodina baltica in vivo. A–C Trichodinids (arrows) attached to the ctenidia of Theodoxus fluviatilis. D–F Overviews of the aboral side, showing the denticle ring and radial pins. G Macronucleus and micronucleus located close to one of the macronuclear
Fig. 6 in A holistic approach to inventory the diversity of mobilid ciliates (Protista: Ciliophora: Peritrichia)
Fig. 6 Trichodina baltica after dry silver nitrate (A) and protargol impregnation (B–E). A, B Overviews of the aboral side, showing the structure of the adhesive disc and aboral ciliary wreath. C Detail of the fine structure of the aboral ciliary wreath. D Overview of the adoral side, showing the oral ciliary pattern and macronucleus. E Detail of the oral ciliary pattern. BM, border membrane; F, oral fibers; GK, germinative kinety; HK, haplokinety; IR, inner ring; MA, macronucleus; MR, middle ring; OR, outer ring; P1–3, peniculus 1–3; PK, polykinety; PP peripheral pins; RP, ridial pins. Scale bars = 5 μm (C), 10 μm (E), 20 μm (A, B, D)
Fig. 8 in Multi-gene phylogeny of the subclass Astomatia (Protista: Ciliophora) refreshed with two rare astome ciliates from the digestive tube of endogeic earthworms
Fig. 8 Phylogenetic tree based on the 18S, 5.8S, and 28S rRNA genes, showing the systematic positions of Metaradiophrya speculorum sp. n. and Maupasella mucronata. The subclass Hymenostomatia was used to a posteriori root the tree. Bootstrap values for maximum likelihood conducted in IQTrees as well as posterior probabilities for Bayesian inferences conducted in Phycas and MrBayes were mapped onto the
Fig. 7 in Multi-gene phylogeny of the subclass Astomatia (Protista: Ciliophora) refreshed with two rare astome ciliates from the digestive tube of endogeic earthworms
Fig. 7 Phylogenetic tree based on the 18S rRNA gene and the ITS region, showing the systematic positions of Metaradiophrya speculorum sp. n. and Maupasella mucronata within the subclass Astomatia. The tree was a posteriori rooted according to Fig. 6. Bootstrap values for maximum likelihood conducted in IQTrees as well as posterior probabilities for Bayesian inferences conducted in Phycas and MrBayes were mapped
Fig. 5 in Multi-gene phylogeny of the subclass Astomatia (Protista: Ciliophora) refreshed with two rare astome ciliates from the digestive tube of endogeic earthworms
Fig. 5 Phylogenetic tree based on the 18S rRNA gene, showing the systematic positions of Metaradiophrya speculorum sp. n. and Maupasella mucronata within the class Oligohymenophorea. The subclass Peniculia was used to a posteriori root the tree. Bootstrap values for maximum likelihood conducted in IQTrees as well as posterior probabilities for Bayesian inferences conducted in Phycas and
Fig. 2 in Multi-gene phylogeny of the subclass Astomatia (Protista: Ciliophora) refreshed with two rare astome ciliates from the digestive tube of endogeic earthworms
Fig. 2 Metaradiophrya speculorum sp. n., holotype specimen in vivo. a Overview, showing the general body organization. Arrow marks the arched skeletal ridge; arrowheads denote the contractile vacuoles. b, d–f Details showing the ciliary pattern, the skeletal system, the nuclear apparatus, and the multiple contractile vacuoles (arrowheads). The skeletal system consists of a fibrillar hook and numerous fibers, which
Fig. 1 in Multi-gene phylogeny of the subclass Astomatia (Protista: Ciliophora) refreshed with two rare astome ciliates from the digestive tube of endogeic earthworms
Fig. 1 Metaradiophrya speculorum sp. n., holotype specimen in vivo. a, b Semi-schematic diagram of the ventral and the dorsal side, showing the ciliary pattern, the nuclear apparatus, as well as the skeletal system. c Ventral view, showing the general body organization. Arrow marks the arched skeletal ridge; arrowheads denote the contractile vacuoles. d Detail of the skeletal system, which consists of a fibrillar hook and
Fig. 6 in Multi-gene phylogeny of the subclass Astomatia (Protista: Ciliophora) refreshed with two rare astome ciliates from the digestive tube of endogeic earthworms
Fig. 6 Phylogenetic tree based on the 18S rRNA gene, showing the systematic positions of Metaradiophrya speculorum sp. n. and Maupasella mucronata isolated from endogeic lumbricid earthworms. The phylogenetic tree suggests that the evolution of endosymbiotic astome ciliates has proceeded through specialization to ecological groups of their host earthworms. Haptophrya planariarum and Dexiotricha spp. were used to a posteriori root the tree. Bootstrap
Fig. 4 in Multi-gene phylogeny of the subclass Astomatia (Protista: Ciliophora) refreshed with two rare astome ciliates from the digestive tube of endogeic earthworms
Fig. 4 Maupasella mucronata, Slovak specimens in vivo. a, b, g Overviews, showing the ciliary pattern, the skeletal system, and the nuclear apparatus. c Detail of the thorn and its supporting fibers. d The supporting fibers of the attachment apparatus of the opisthe are formed at the anterior end of the broken somatic ciliary rows. e Somatic kineties are narrowly arranged and composed of very densely spaced basal bodies. f
Fig. 3 in Multi-gene phylogeny of the subclass Astomatia (Protista: Ciliophora) refreshed with two rare astome ciliates from the digestive tube of endogeic earthworms
Fig. 3 Maupasella mucronata, Slovak specimens in vivo. a, d Semischematic diagrams of the ventral side, showing the ciliary pattern and the nuclear apparatus of representative specimens. b, c Ventral view, showing the ciliary pattern and the nuclear apparatus of a mid-divider. e, f Semi-schematic diagrams, showing the general body organization. Arrows mark the thorn, which consists of two skeletal fibers arranged in
Fig. 9 in Multi-gene phylogeny of the subclass Astomatia (Protista: Ciliophora) refreshed with two rare astome ciliates from the digestive tube of endogeic earthworms
Fig. 9 Putative secondary structure of ITS2 molecules of Metaradiophrya speculorum sp. n. and Maupasella mucronata as well as comparison of stems of helix III between Metaradiophrya speculorum and Metaradiophrya lumbrici
Figure 16 in Linking morphology and molecules: integrative taxonomy of spathidiids (Protista: Ciliophora: Litostomatea) from Korea
Figure 16. Spathidiid phylogeny based on the 18S rRNA gene (a) and concatenation of the 18S rRNA gene and ITS region sequences (b). Bootstrap values for maximum likelihood (ML) and posterior probabilities were mapped onto the Bayesian inference (BI) tree. A dash indicates bootstrap values below 50%. Newly obtained sequences are in bold. Scale bars indicate numbers of substitutions.
Figure 12 in Linking morphology and molecules: integrative taxonomy of spathidiids (Protista: Ciliophora: Litostomatea) from Korea
Figure 12. Spathidium securiforme from life. (a) Right side view of a representative individual; (b, c) optical sections showing tortuous macronuclear strand; (d) detail of anterior body portion showing type I (arrows) and type II (arrowheads) extrusomes attached to oral bulge; (e) optical section showing type I (arrows) and type II (arrowheads) extrusomes scattered throughout cytoplasm. MA, macronucleus. Scale bars: a = 100 µm; b, c = 10 µm; d, e = 5 µm.
Figure 10 in Linking morphology and molecules: integrative taxonomy of spathidiids (Protista: Ciliophora: Litostomatea) from Korea
Figure 10. Spathidium rectitoratum from life (a, h, i) and after protargol impregnation (b–g). (a) Right side view of a representative individual; (b, c) right and left side view of ciliary pattern and nuclear apparatus of a representative specimen; (d) detail of anterior body end showing three-rowed dorsal brush; (e–g) variability of body shape and size as well as of nuclear apparatus; (h) oral extrusomes, 8–13 µm long; (i) resting cyst, 50 µm in diameter. CK, circumoral kinety; DB, dorsal brush; MA, macronucleus; OB, oral bulge; SK, somatic kinety/somatic kineties. Scale bars: a–c, e–g = 100 µm; d = 10 µm.
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International Brain Laboratory public data
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OpenNeuro
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