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13 results for “Kudoa”
Fig. 6 in Negative effects of Kudoa islandica n. sp. (Myxosporea: Kudoidae) on aquaculture and wild fisheries in Iceland
Fig. 6. SSU rDNA maximum likelihood phylogenetic tree of 16 Kudoa spp. Kudoa islandica is robustly and consistently placed with other Kudoa taxa in all analyses, but is not well supported in the clade it is placed in. Numbers at the nodes represent bootstrap support from 1000 samplings, nodes with a support of <50 are considered not supported (ns).
Fig. 4 in Negative effects of Kudoa islandica n. sp. (Myxosporea: Kudoidae) on aquaculture and wild fisheries in Iceland
Fig. 4. Line drawings of Kudoa islandica n. sp. in apical view (A) and lateral view (B). Scanning electron microscope images of K. islandica n. sp. (C–E). Mature spore in lateral view showing extruded polar filaments (arrow) (C). Single spore in apical view (D) showing the sutures of the four valves (broad arrows), the four apical projections (thin arrow) and cytoplasmic projections (arrowhead). Single spore in posterior view (E) showing the suture of the four valves (broad arrows), Scale bars: (A) and (B) = 2 µm; (C), (D) and (E) = 1 µm.
Fig. 3 in Negative effects of Kudoa islandica n. sp. (Myxosporea: Kudoidae) on aquaculture and wild fisheries in Iceland
Fig. 3. Fresh mature spores of Kudoa islandica n. sp. as seen in fresh squash preparations from muscular tissue of Atlantic wolffish, Anarhichas lupus. Note the protruding polar filament of one of the spores (arrow). Nomarski differential interference contrast. Scale bar = 10 µm.
Fig. 5 in Negative effects of Kudoa islandica n. sp. (Myxosporea: Kudoidae) on aquaculture and wild fisheries in Iceland
Fig. 5. (A) and (B) Muscle section from lumpfish, Cyclopterus lumpus, fixed 24 h post mortem. (A) Ruptured Kudoa plasmodia with subsequent liberation of mature spores causing focal necrosis of the muscle fibre enveloping the plasmodium. (B) Higher magnification showing liberated spores (arrows) and a focal necrosis in the vicinity of the spores (asterisk). (C) Muscle section of an uninfected fish at approx. 48 h p.m. (D) Section of muscle of a heavily infected fish at approximately 48 h p.m. showing extensive myoliquefaction (asterisk). (E) A close up of the affected area showing numerous Kudoa spores (arrowhead) and the associated liquefactive necrosis. Scale bars: (A) = 50 µm, (B) = 10 µm, (C) and (D) = 200 µm, (E) = 10 µm. Abbreviations: MF = Muscle fibres, AC = Adipocytes.
Fig. 2 in Negative effects of Kudoa islandica n. sp. (Myxosporea: Kudoidae) on aquaculture and wild fisheries in Iceland
Fig. 2. (A) Stained histological section of a lumpfish muscle showing a considerable portion of the muscle fibres substituted with Kudoa islandica n. sp. plasmodia. (B) A single infection. (C) A double infection. (D) Multiple infection; numerous plasmodia developing inside a single muscle fibre, separated from each other and the muscle tissue with a thin membrane (arrows). (E) Plasmodial membranes separating two plasmodia (arrows). Inside each plasmodium are numerous mature Kudoa spores. Scale bars: (A) = 300 µm (B) and (C) = 25 µm; (D) = 150 µm; (E) = 5 µm.
Figure 4 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 4. Phylogenetic tree derived from Bayesian Inference (BI), based on the partial sequences of the SSU rDNA gene of Kudoa vi- seuensis n. sp. and closely-related myxosporans. The GenBank access numbers are shown next to the species names, and the numbers at each node are the BI posterior probabilities. The new species is highlighted in bold type. Abbreviations: Msl – muscle; Dtr – digestive tract; Nsy – nervous system.
Figure 2 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 2. Light photomicrograph: (A) longitudinal histology section of the skeletal musculature of B. surinamensis containing a pseudocyst (*), along the axis of the muscle, showing the substitution of the fiber by the parasite; (B) transversal section showing the pseudocyst of the mixosporean occupying the central portion of the muscle fiber (arrowhead), typical of an individual infection; (C) Multiple infection of pseudocysts within a single muscle fiber, separated from one another and the muscle tissue by a fine conjunctive membrane (arrows). Scale bars: 40 µm.
Figure 1 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 1. Light photomicrograph: (A) Whitish pseudocyst (arrowhead) found in the musculature of B. surinamensis. Scale bar: 1000 µm; (B) pseudocyst (c) and numerous mature spores (e) observed following the rupture of the pseudocyst. Scale bar: 100 µm; (C) Fresh, pseu- do-square spores (e) of Kudoa viseuensis n. sp. Scale bar: 20 µm; Inset: polar capsules (PC) in lateral (L) and apical (A) views (DIC). Scale bar: 10 µm.
FIGURE 2 in Kudoa ajurutellus n. sp. (Multivalvulida: Kudoidae), a parasite of the skeletal musculature of the Bressou sea catfish, Aspistor quadriscutis, in northeastern of the State of Pará
FIGURE 2. Light photomicrography: Fresh pseudocysts and spores of Kudoa ajurutellus n. sp. from the fiber muscular skeletal of A. quadriscutis. A. Fresh pseudocysts of Kudoa ajurutellus n. sp. (P) from the musculares skeletal. Scale bar: 10 µm. B. Spores (S) in muscle fiber (F). In detail: Spores of Kudoa ajurutellus n. sp., showing the four polar capsules (PC) under DIC. Scale bar: 20 µm
FIGURE 4 in Kudoa ajurutellus n. sp. (Multivalvulida: Kudoidae), a parasite of the skeletal musculature of the Bressou sea catfish, Aspistor quadriscutis, in northeastern of the State of Pará
FIGURE 4. Phylogenetic tree generated by the Bayesian Inference (BI) analysis of the aligned partial 18S rDNA gene sequences of Kudoa ajurutellus n. sp. and related Kudoa spp.. 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 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
FIGURE 3 in Kudoa ajurutellus n. sp. (Multivalvulida: Kudoidae), a parasite of the skeletal musculature of the Bressou sea catfish, Aspistor quadriscutis, in northeastern of the State of Pará
FIGURE 3. Histological sections: A. Muscle (F) infected with pseudocysts of Kudoa ajurutellus n. sp. in myofibrils (arrow head), stained with HE under DIC. Scale bar: 20 µm. B. Greatest increase pseudocysts of Kudoa ajurutellus n. sp. (*) in fiber musculare, stained with HE. Scale bar: 20 µm.
FIGURE 1 in Kudoa ajurutellus n. sp. (Multivalvulida: Kudoidae), a parasite of the skeletal musculature of the Bressou sea catfish, Aspistor quadriscutis, in northeastern of the State of Pará
FIGURE 1. Schematic drawing of Kudoa ajurutellus n. sp. in apical (A) and side (B) views, showing its internal organization. Scale bar: 5 µm
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