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99 results for “Myxosporea”
FIGURE 4 in Myxosporea (Cnidaria: Myxozoa) infecting the saddled seabream Oblada melanura (L. 1758) (Teleostei: Sparidae) and the painted comber Serranus scriba (L. 1758) (Teleostei: Serranidae) in Tunisia
FIGURE 4. Photomicrographs of Ceratomyxa sp. 2 from the gall bladder of Serranus scriba. (A–B) Fresh mature spores in sutural view. (C) Mature spore in lateral view with two pyriform polar capsules (pc) and two sporoplasmic nuclei (sn). (D–F) Mature spores in apical view. Scale bar = 10 µm.
FIGURE 3 in Myxosporea (Cnidaria: Myxozoa) infecting the saddled seabream Oblada melanura (L. 1758) (Teleostei: Sparidae) and the painted comber Serranus scriba (L. 1758) (Teleostei: Serranidae) in Tunisia
FIGURE 3 (cont.). Photomicrographs of Ceratomyxa sp. 1 from the gall bladder of Serranus scriba. (G–I) Variable forms of fresh mature spores in sutural view. Notice the presence of mixed-infection with Triangula forms (arrow in H). (J) Atypical spore with three polar capsules and three shell valves. Scale bar = 10 µm.
FIGURE 2 in Myxosporea (Cnidaria: Myxozoa) infecting the saddled seabream Oblada melanura (L. 1758) (Teleostei: Sparidae) and the painted comber Serranus scriba (L. 1758) (Teleostei: Serranidae) in Tunisia
FIGURE 2. Photomicrographs of Ceratomyxa sp. 2 from the gall bladder of Oblada melanura. (A–C) Globular to subspherical disporic plasmodia(p), notice the presence of immature spores (is) within plasmodium in B and the migration of two sporoplasmic nuclei (sn) in one side of pre–mature spore in C. (D–E) Fresh smears of mature spores. (F–H) Variable forms of mature spores in sutural view showing the pyriform polar capsules (pc), the suture line (sl) and an iodinophilous vacuole (v). (H) Mature spore in lateral view presented one capsulogenic nucleus (cn) below the polar capsule. Scale bar = 10µm.
FIGURE 8 in Myxosporea (Cnidaria: Myxozoa) infecting the saddled seabream Oblada melanura (L. 1758) (Teleostei: Sparidae) and the painted comber Serranus scriba (L. 1758) (Teleostei: Serranidae) in Tunisia
FIGURE 8. Line drawing of four myxosporeans infecting the painted comber Serranus scriba from Gulf of Tunis, Tunisia. (A–B). Ceratomyxa sp. 1 in sutural (A) and lateral view (B). (C–D) Ceratomyxa sp. 2 in sutural (C) and apical view (D). (E–F). Myxodavisia sp. in sutural (E) and apical view (F). (G–I) Variable form of Zschokkella sp. in frontal view (G), valvular view (H) and sutural view (I). Scale bar = 10 µm.
FIGURE 1 in Myxosporea (Cnidaria: Myxozoa) infecting the saddled seabream Oblada melanura (L. 1758) (Teleostei: Sparidae) and the painted comber Serranus scriba (L. 1758) (Teleostei: Serranidae) in Tunisia
FIGURE 1. Photomicrographs of Ceratomyxa sp. 1 from the gall bladder of Oblada melanura. (A–E) Disporic sub-spherical to spherical plasmodia (p) containing each one two identical spores surrounded with vary refractive granules (g), Notice the presence of two capsulogenic nuclei (cn) and numerous sporoplasmosomes (spp). (F) Fresh smear contains disporic plasmodia (p) and Mature spores (s). (G) mature spore in sutural view showing the spherical polar capsules (pc), the straight suture line (sl), the sporoplasmic nuclei (sn), the capsulogenic nuclei (cn) and the unequal shell valves. (H) mature spore in lateral view. Scale bar = 20 µm in F; 10 µm in A–E, G–H.
FIGURE 7 in Myxosporea (Cnidaria: Myxozoa) infecting the saddled seabream Oblada melanura (L. 1758) (Teleostei: Sparidae) and the painted comber Serranus scriba (L. 1758) (Teleostei: Serranidae) in Tunisia
FIGURE 7. Line drawing of Myxozoan species infecting the saddle seabream Oblada melanura from the Bay of Bizerte, Tunisia. (A–C) Variable forms of Ceratomyxa sp. 1 in sutural view (A), in lateral view (B), in apical view (C). (D–F) Variable forms of Ceratomyxa sp. 2 in sutural view (D), in lateral view (E), in apical view (F). Scale bar = 10 µm.
FIGURE 2 in Myxobolus bragantinus n. sp. (Cnidaria: Myxosporea) from the gill filaments of the redeye mullet, Mugil rubrioculus (Mugiliformes: Mugilidae), on the eastern Amazon coast
FIGURE 2. Photomicrograph of Myxobolus bragantinus n. sp. in the gill filaments of Mugil rubrioculus. (a) Intrafilamentalepithelial cyst (FE) causing hypertrophy of the filament. Scale bar = 50 µm; (b) Amplification of the cyst, showing thickened cyst wall (arrows) and numerous mature and immature spores (S). Scale bar = 50 µm. An isolated spore is highlighted, showing the polar capsules (PC). Coloration ZN.
FIGURE 3 in Myxobolus bragantinus n. sp. (Cnidaria: Myxosporea) from the gill filaments of the redeye mullet, Mugil rubrioculus (Mugiliformes: Mugilidae), on the eastern Amazon coast
FIGURE 3. Phylogenetic tree generated by the Bayesian Inference (BI) analysis of the aligned partial SSU rRNA gene sequences of Myxobolus bragantinus n. sp. and related myxosporeans. The GenBank accession numbers are shown adjacent to the species names. The numbers at the nodes are posterior probability values calculated for BI. The new species is shown in bold type.
FIGURE 1 in Myxobolus bragantinus n. sp. (Cnidaria: Myxosporea) from the gill filaments of the redeye mullet, Mugil rubrioculus (Mugiliformes: Mugilidae), on the eastern Amazon coast
FIGURE 1. Cysts and spores de Myxobolus bragantinus n. sp. in Mugil rubrioculus. (a) Cysts observed macroscopically in the gill filaments (arrows). Scale bar = 100 µm; (b) Cyst (*) in the gill filament (F). Scale bar = 20 µm. A ruptured cyst is marked with an asterisk (*). Scale bar = 10 µm; (c) Numerous spores (S) following the rupture of the cyst (**). Scale bar = 20 µm. In the detail, free spores in frontal view, showing the polar capsules (PC). Scale bar = 10 µm.
FIGURE 7 in Pseudalataspora vanderlingeni n. sp. (Myxosporea: Bivalvulida) from gall bladders of the Cape hakes Merluccius capensis Castelnau, and M. paradoxus Franca (Teleostei: Merlucciidae)
FIGURE 7. Maximum Likelihood consensus tree showing relationship of Pseudalataspora vanderlingeni (in bold), isolated from Merluccius capensis, to other Ceratomyza species, based on 18S rDNA sequence analysis. Bootstrap values indicating ≥ than 70% support for Maximum Likelihood and Maximum Parsimony analyses respectively are shown. Host species, geographical origin and accession numbers are listed after species names. 1myxosporean species also isolated from Archamia fucata; 2 also isolated from Cheilodipterus quinquelineatus/ Nectamia fusca/ Ostorhinchus cookii/ Apogon doederleini/; 3also isolated from Plectroglyphidodon leucozonus/ Chrysiptera cyanea/ Pomacentrus chrysurus/ Neoglyphidodon melas; 4 also isolated from Clupea harengus; 5also isolated from Aulopus filamentosus; 6also isolated from Aulopus filamentosus; 7also isolated from Aulopus filamentosus; 8myxosporean species isolated from monogenean Diplectanocotyla sp. on the gills of Megalops cyprinoides; 9also isolated from Belone belone.
FIGURE 1–5. FIGURE 1 in Pseudalataspora vanderlingeni n. sp. (Myxosporea: Bivalvulida) from gall bladders of the Cape hakes Merluccius capensis Castelnau, and M. paradoxus Franca (Teleostei: Merlucciidae)
FIGURE 1–5. FIGURE 1. Pseudalataspora vanderlingeni: unstained disporic sporoblast. FIGURE 2. Pseudalataspora vanderlingeni: unstained spore in anterior/sutural view. FIGURE 3 & 4. Pseudalataspora vanderlingeni: unstained spores in valvular view. FIGURE 5. Pseudalataspora vanderlingeni: spore stained with Giemsa in valvular view. Scale bar = 10 µm.
Fig. 3 in A new Myxobolus (Cnidaria: Myxosporea) infecting the ornamental catfish Corydoras schwartzi from the Purus River in Brazil
Fig. 3. Schematic representation of the mature myxospore Myxobolus adrianoi sp. nov., parasite of intestine of the Corydoras schwartzi Rössel, 1963. Scale bar: 10 μm.
Fig. 2 in A new Myxobolus (Cnidaria: Myxosporea) infecting the ornamental catfish Corydoras schwartzi from the Purus River in Brazil
Fig. 2. Light photomicrograph of mature myxospores of Myxobolus adrianoi sp. nov., parasite of the intestine of Corydoras schwartzi Rössel, 1963. A. Wet-mount mature myxospores (white arrows). B–C. Frontal view of mature myxospores stained in May-Grünwald-Giemsa, showing two equal polar aubergine-like capsules, occupying more than half the length of the myxospore. D. Mature myxospore stained, in frontal view, with the polar filament extruded (black arrow).
Fig. 4 in A new Myxobolus (Cnidaria: Myxosporea) infecting the ornamental catfish Corydoras schwartzi from the Purus River in Brazil
Fig. 4 (next page). Electron micrographs of myxospores of Myxobolus adrianoi sp. nov., parasite of the intestine of Corydoras schwartzi Rössel, 1963. A. Young sporoblast showing polar filament still out of the polar capsules, abundant valve-forming material, conspicuous sutural line (large white arrow), some sporoplasmosomes (small white arrows), mitochondria and presence of pinocytic channels (white arrowheads) in the ectoplasm. B–C. Sporoblast in advanced developmental stage with polar filament (white arrows) inside the polar capsule. In B note several sporoplasmosomes (white arrows) and two nuclei at sporoplasms. In C observe presence of valve-forming material (short white arrows), capsulogenic cell, nuclei at sporoplasm and nucleus of capsulogenic cell. D. Immature myxospore showing valvogenic cells abutting each other to form a sutural ridge and showing the two cells are separated by a thin layer of homogenous material (white arrow). E–F. Almost mature myxospores showing sutural lines (black arrows), valve-forming material (*), valves, two nuclei and sporoplasmosomes (white arrows) at sporoplasms. Abbreviations: cp = capsulogenic cell; ec = ectoplasm; mt = mitochondrion; nc = nucleus of capsulogenic cell; Nu = nucleus; pc = polar capsule; PF = polar filament; sp = sporoplasm; v = valvogenic cell/valve; vm = valve-forming material. Scale bars: 2 μm.
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.
Fig. 3 Henneguya calcarifer n in Henneguya (Cnidaria: Myxosporea: Myxobolidae) infections of cultured barramundi, Lates calcarifer (Perciformes: Latidae) in an estuarine wetlands system of Malaysia: description of Henneguya setiuensis n. sp., Henneguya voronini n. sp. and Henneguya calcarifer n. sp.
Fig. 3 Henneguya calcarifer n. sp. (a–b) Line drawings of mature myxospores in frontal view showing polar capsules with coiled polar tubules. (c) Unstained, compressed plasmodium, densely packed with mature myxospores
FIGURE 6 in Pseudalataspora vanderlingeni n. sp. (Myxosporea: Bivalvulida) from gall bladders of the Cape hakes Merluccius capensis Castelnau, and M. paradoxus Franca (Teleostei: Merlucciidae)
FIGURE 6. Pseudalataspora vanderlingeni: fresh spore under phase contrast. Scale bar = 10 µm.
Figure 3 in Morphological and Molecular Characteristics of Kudoa viseuensis n. sp. (Myxosporea: Multivalvulida), Found in the Muscle of Batrachoides surinamensis (Teleostei: Batrachoididae) in the Brazilian Amazon Region
Figure 3. Schematic drawing of a spore of Kudoa viseuensis n. sp. in apical view (right) and side view (left). Scale bar = 5 μm
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