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24 results for “Bivalvulida”
Fig. 2 in Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China
Fig. 2. Schematic illustrations of Ceratomyxa kareus sp. n. A–L – from Kareius bicoloratus; M–N – from Zebrias zebra; A–D – lateral view of mature spore; E–F, N – plasmodia with two spores; G–J – earlier stage plasmodia; K – plasmodium with one spore; L–M – plasmodia with mature spores. Scale bars: 10 µm.
Fig. 3 in Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China
Fig. 3. Schematic illustrations of Ceratomyxa spp. A–E – Ceratomyxa lomi sp. n.; A – mature spore viewed from the perspective of the capsule; B–D – lateral view of mature spore; E – plasmodium with two mature spores; F–J – Ceratomyxa lateolabrax sp. n.; F – plasmodium with two spores; G–J – lateral view of mature spore; K–N – Ceratomyxa qingdaoensis sp. n.; K–L, N – showing a lateral view of a mature spore; M – lateral view of an immature spore. Scale bars: 10 µm.
Fig. 1 in Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China
Fig. 1. Schematic illustrations of three myxosporean species. A–E – Sphaerospora sebasta sp. n.; A – mature spore from a frontal view; B–C – spore viewed from the perspective of the capsule; D – spore from a sutural view; E – spore from an oblique sutural view; F–H – Ceratomyxa sebastisca sp. n., showing mature spores with coarse sporoplasm; I–O – Ceratomyxa hemitriptera sp. n.; I–J – mature spore from a lateral view; K–L – plasmodium with one mature spore; M–N – early stage plasmodium with one developing spore; O – plasmodium with one developing spore from a capsule view. Scale bars: 10 µm.
Fig. 5 in Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China
Fig. 5. Microphotographs of myxosporean species. A–B – Sphaerospora sebasta sp. n.; C – Ceratomyxa sebastisca sp. n.; D–E – Ceratomyxa hemitriptera sp. n.; F–H – Ceratomyxa kareus sp. n.; I–J – Ceratomyxa lomi sp. n. Scale bars: 10 µm.
Fig. 4 in Data on Ten New Myxosporean Parasites (Myxozoa, Myxosporea, Bivalvulida) from the Yellow Sea, China
Fig. 4. Schematic illustrations of Ceratomyxa spp. A–G – Ceratomyxa saurida sp. n.; A–D, G – lateral view of mature spore; E – lateral view of abnormal spore; F – lateral view of immature spore; H–L – Ceratomyxa simplex sp. n.; H, J – lateral view of mature spore; I – immature spore viewed from the perspective of the capsule; K–L – plasmodia with one spore; M–T – Ceratomyxa triacantha sp. n.; M–N, P – plasmodia with two spores; O, Q – early stage plasmodia with many nuclei; R–T – sutural view of mature spores. Scale bars: 10 µm.
FIGURES 10–15. Pseudalataspora 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 10–15. Pseudalataspora lophii n. sp. 10. Young trophozoite with non-bifurcated tip, unstained fixed specimen. 11. Trophozoite with developing spores and bifurcated tip, unstained fixed specimen. 12. Spore, sutural view, stained with Giemsa. 13. Spore, sutural view, unstained fixed specimen. 14. Spore, polar view, stained with Giemsa. Scale-bars: 10μm.
FIGURE 15. Pseudalataspora 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
FIGURE 15. Pseudalataspora lophii n. sp. Micrograph of sutural view of fresh spore, unstained. Scale-bar: 10μm.
FIGURES 8–9. Alataspora budegassai 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 8–9. Alataspora budegassai n. sp. 8. SEM of sporoblast, showing hooked free end (arrowed). 9. TEM of section of sporoblast, showing tendrils attached to wall of gall bladder (arrowed). Scale-bars: 10μm
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 13–15 in Two new species of myxosporean parasites (Myxosporea: Bivalvulida) from gall bladders of Macruronus magellanicus Lönnberg, 1907 (Teleostei: Merlucciidae)
FIGURES 13–15. Line drawings of Palliatus magellanicus n. sp. 13. Disporic sporoblast, stained with Indian ink. 14. Developing sporoblast, with deeply staining cords arrowed. 15. Spore stained with Giemsa. Scale bar: 10μm.
FIGURE 8–10 in Two new species of myxosporean parasites (Myxosporea: Bivalvulida) from gall bladders of Macruronus magellanicus Lönnberg, 1907 (Teleostei: Merlucciidae)
FIGURE 8–10. Line drawings of Myxidium baueri. 8. Spore unstained, valvular view. 9. Spore unstained, sutural view. 10. Spore, valvular view, stained with Giemsa. Scale bar: 5μm.
FIGURE 7 in Two new species of myxosporean parasites (Myxosporea: Bivalvulida) from gall bladders of Macruronus magellanicus Lönnberg, 1907 (Teleostei: Merlucciidae)
FIGURE 7. Maximum Parsimony tree of 18S rDNA sequences from Pseudalataspora kovalevae (in bold) and most closely related myxosporean species as determined by BLAST analysis. Cystodiscus melleni (syn. Myxidium melleni) was chosen as the outgroup. Bootstrap values indicating ≥ than 50% support for Maximum Parsimony and Maximum Likelihood analyses are shown. Host species and geographical location from which parasites were isolated are listed.
FIGURE 6. Pseudalataspora kovalevae n in Two new species of myxosporean parasites (Myxosporea: Bivalvulida) from gall bladders of Macruronus magellanicus Lönnberg, 1907 (Teleostei: Merlucciidae)
FIGURE 6. Pseudalataspora kovalevae n. sp. Fresh spores under Nomarski interference-contrast illumination. Scale bar: 10μm.
FIGURE 12 in Two new species of myxosporean parasites (Myxosporea: Bivalvulida) from gall bladders of Macruronus magellanicus Lönnberg, 1907 (Teleostei: Merlucciidae)
FIGURE 12. Maximum Parsimony tree of 18S rRNA gene sequences from Myxidium baueri (in bold) and most closely related myxosporean species as determined by BLAST analysis. Tetracapsuloides bryosalmonae was chosen as the outgroup. Bootstrap values indicating ≥ than 50% support for Maximum Parsimony and Maximum Likelihood analyses are shown. Host species and geographical location from which parasites were isolated are listed.
FIGURES 1–5 in Two new species of myxosporean parasites (Myxosporea: Bivalvulida) from gall bladders of Macruronus magellanicus Lönnberg, 1907 (Teleostei: Merlucciidae)
FIGURES 1–5. Line drawings of Pseudalataspora kovalevae n. sp. 1. Disporic sporoblast, unstained. Scale bar: 10 μm. 2, 3. Spores, unstained. Scale bar: 5μm. 4, 5. Spores stained with Giemsa. Scale bar: 5μm.
FIGURE 11 in Two new species of myxosporean parasites (Myxosporea: Bivalvulida) from gall bladders of Macruronus magellanicus Lönnberg, 1907 (Teleostei: Merlucciidae)
FIGURE 11. Myxidium baueri. Fresh spore under Nomarski interference-contrast illumination. Scale bar: 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).
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