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15 results for “Ceratomyxa”
FIGURES 1–3. Ceratomyxa lophii n in Three new species of Myxosporea (Bivalvulida: Ceratomyxidae: Alatasporidae) from the gall bladders of anglerfishes Lophius spp. (Teleostei: Lophiidae) in the Northeast Atlantic Ocean
FIGURES 1–3. Ceratomyxa lophii n. sp. 1. Trophozoite, stained with Giemsa. 2. Spore, sutural view, stained with Giemsa. 3. Spore, sutural view, unstained fixed specimen. Scale-bars: 10μm.
FIGURES 6–9 in Ultrastructural observations on the development of Ceratomyxa aegyptiaca (Myxozoa: Bivalvulida) infecting Solea aegyptiaca (Pleuronectiformes: Soleidae) from Tunisian coastal lagoon
FIGURES 6–9. Capsulogenesis of Ceratomyxa aegyptiaca. Fig. 6. Detail of two capsulogenic cells (Cc) in different stages of maturation. One capsulogenic cell (Cc) has a mature polar capsule (Pc). The second capsulogenic cell shows the sections of external tube (Et), a capsular primordium (Cp) and nucleus (CNu) in their cytoplasm. Sutural line (S) can be observed. Fig. 7. Detail of a capsulogenic cell showing a polar capsule with twisted appearance of polar filament (Pf). The apical side of the mature spore was surrounded by fibrous material (arrows) between the capsulogenic cell and the valve (V). Note the presence vacuoles (V) in the cytoplasm of the capsulogenic cell (Cc). Fig. 8. Longitudinal section of mature polar capsule (Pc) with its polar filament (arrows) showing an electron dense matrix (*) an outer electron-dense layer (OL) and an inner electron-lucent layer (IL). Note the channel for filament discharge (D) and externally, a surrounding valve (V) can be seen. Fig. 9. A section of spore showing the mature polar capsule (Pc), the opening for the extrusion of the polar filament (Op), two sporoplasm nucleus (SpNu) and one flattened valvogenic nuclei (VNu).
FIGURES 3–5 in Ultrastructural observations on the development of Ceratomyxa aegyptiaca (Myxozoa: Bivalvulida) infecting Solea aegyptiaca (Pleuronectiformes: Soleidae) from Tunisian coastal lagoon
FIGURES 3–5. Earlier sporogonic stages of Ceratomyxa aegyptiaca Fig. 3. Sporoblast showing two capsulogenic cells (Cc) with its nuclei (CNu) and with a prominent external tube (Et) and a capsular primordium (Cp), a sporoplasmogenic cell (SpC) with two nuclei (SpNu) and laterally two valvogenic cells (Vc) with its nuclei (VNu). Fig. 4. Young capsulogenic cell (Cc) with capsular primordium (Cp) composed of an electron-dense outer layer (1), an electron-lucent median layer (2) and an inner electron-dense core (3). Fig. 5. Immature spore attached to the epithelial cell (Ec) showing capsulogenic cell (Cc) with a prominent external tube (Et) in the cytoplasm and a clup-shaped capsular primordium (Cp) which is surrounded by valvogenic cell (Vc).
FIGURES 10–11 in Ultrastructural observations on the development of Ceratomyxa aegyptiaca (Myxozoa: Bivalvulida) infecting Solea aegyptiaca (Pleuronectiformes: Soleidae) from Tunisian coastal lagoon
FIGURES 10–11. Transmission electron micrographs of myxospores of Ceratomyxa aegyptiaca. Fig. 10. Premature myxosspore showing the sporoplasm cell (Spc) with its two nuclei (SpNu). Note the presence of one of the capsulogenic nuclei (CNu). Fig. 11. Young myxospore in frontal view showing two long valves (V) and the flattened valvogenic nuclei (VNu) of one valve.
FIGURES 1–2 in Ultrastructural observations on the development of Ceratomyxa aegyptiaca (Myxozoa: Bivalvulida) infecting Solea aegyptiaca (Pleuronectiformes: Soleidae) from Tunisian coastal lagoon
FIGURES 1–2. Transmission electron micrographs of Ceratomyxa aegyptiaca from the gallbladder of Solea aegyptiaca. Fig. 1. Initial primary cell (P) with large and condensed nucleus (N) containing several vacuoles (V). Fig. 2. Primary cell (P) attached to the gallbladder epithelium showing pinocytotic invaginations (arrows) extending into the host tissue (H).
FIGURE 3 in Ceratomyxa thunni sp. n. (Myxozoa: Ceratomyxidae) in Atlantic northern bluefin tuna (Thunnus thynnus) caught in the Adriatic Sea, Island of Jabuka
FIGURE 3. Large spherical polar capsule with five coils of polar filament. Note densely selfcoiled appearance of each filament row (arrows) (50000x).
FIGURE 1 in Ceratomyxa thunni sp. n. (Myxozoa: Ceratomyxidae) in Atlantic northern bluefin tuna (Thunnus thynnus) caught in the Adriatic Sea, Island of Jabuka
FIGURE 1. Line drawings of mature spore (a), young spore (b) and disporic trophozoite (c) of Ceratomyxa thunni sp. n. Scale bar 10 µm.
FIGURE 1 in First report of Ceratomyxa scorpaeni (Cnidaria: Myxozoa) from Scorpaena porcus in the Black Sea
FIGURE 1 Ceratomyxa scorpaeni infecting the gall bladder of Scorpaena porcus: a disporogonic plasmodium; b transversely elongated mature spore; c crescent shaped mature spore; d the spore drawing.
Figure 2 from: Sousa FB, Milanin T, Morandini AC, Espinoza LL, Flores-Gonzales A, Gomes AL.S, Matoso DA, Mathews PD (2021) Molecular diagnostic based on 18S rDNA and supplemental taxonomic data of the cnidarian coelozoic Ceratomyxa (Cnidaria, Myxosporea) and comments on the intraspecific morphological variation. Zoosystematics and Evolution 97(2): 307-314. https://doi.org/10.3897/zse.97.64769
Figure 2 Transmission electron microscopy images of Ceratomyxa amazonensis isolated of Symphysodon discus from the Unini River, Amazonas State, Brazil. a. Myxospore showing two sub-spherical polar capsules and sporoplasm (sp) occupying most of the myxospore volume; b. Detail of the apical suture (black arrow) and sporoplasmosomes (arrowheads); c. Detail of lateral suture (black arrow); d. Polar capsule displaying still uncoiled internal polar tubule (black arrow). Scale bars: 2 µm (a); 1 µm (c); 500 nm (b, d).
Figure 1 from: Sousa FB, Milanin T, Morandini AC, Espinoza LL, Flores-Gonzales A, Gomes AL.S, Matoso DA, Mathews PD (2021) Molecular diagnostic based on 18S rDNA and supplemental taxonomic data of the cnidarian coelozoic Ceratomyxa (Cnidaria, Myxosporea) and comments on the intraspecific morphological variation. Zoosystematics and Evolution 97(2): 307-314. https://doi.org/10.3897/zse.97.64769
Figure 1 Light photomicrographs of Ceratomyxa amazonensis plasmodia. a, b. Slightly elongated plasmodia showing mature myxospores (white asterisks) and few early sporogonic stages (arrows); c. Spherical plasmodium with two slightly crescent-shaped mature myxospores (ms) and containing early sporogonic stages (arrows); d. Differential interference contrast microscopy snapshot of a slightly crescent-shaped mature myxospore. Scale bars: 10 µm.
Figure 2 in Morphological and molecular aspects of Ceratomyxa ghannouchensis n. sp. and C. pallida Thélohan 1894 infecting the bogueı Boops boops (l.)
Figure 2. Ceratomyxa pallida from the gall bladder of Boops boops. (a) Fresh mature myxospore; and (b) disporousı (c) monosporous and (d) trisporous plasmodia. (e)ı (f) and (g) Line drawings of the mature myxosporeı disporous and trisporous stages respectively. Scale bars = 10 µm.
Figure 4 in Morphological and molecular aspects of Ceratomyxa ghannouchensis n. sp. and C. pallida Thélohan 1894 infecting the bogueı Boops boops (l.)
Figure 4. Phylogenetic tree of Ceratomyxa spp. resulting from maximum likelihood analysis using the SSU rDNA dataset showing the position of Ceratomyxa ghannouchensis n. sp. and Ceratomyxa pallida. Support values based on 1000 replicates are indicated at branching nodes listed as bootstrap values from maximum likelihood/Bayesian posterior probabilities from Bayesian analysis. Tetracapsuloides bryosalmonae was used as outgroup. Values below 70% or not supported by the analysis are indicated by dashes. Scale bar is probability of nucleotide change.
Figure 1. Ceratomyxa ghannouchensis n in Morphological and molecular aspects of Ceratomyxa ghannouchensis n. sp. and C. pallida Thélohan 1894 infecting the bogueı Boops boops (l.)
Figure 1. Ceratomyxa ghannouchensis n. sp. from the gall bladder of Boops boops. (a) Fresh myxospore; (b) monosporous plasmodia; (c) line drawing of the mature myxospore. Scale bars = 5 µm.
Figure 3 in Morphological and molecular aspects of Ceratomyxa ghannouchensis n. sp. and C. pallida Thélohan 1894 infecting the bogueı Boops boops (l.)
Figure 3. Seasonal variation of the prevalence of Ceratomyxa ghannouchensis n. sp. and Ceratomyxa pallida from Boops boops in the Gulf of Gabès.
FIGURE 2 in First report of Ceratomyxa scorpaeni (Cnidaria: Myxozoa) from Scorpaena porcus in the Black Sea
FIGURE 2. ML tree showing the phylogenetic relationships between isolate AO-62 (obtained in this study) and related Ceratomyxa species and specimens, obtained from NCBI (see Table 1). The tree is depending on 18S rDNA nucleotide sequences and bootstrap values (≥50%) obtained from ML, MP and NJ analyses have stated on each related node with the given order.
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