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Ultrastructure and development of Nosema podocotyloidis n. sp. (Microsporidia), a hyperparasite of Podocotyloides magnatestis (Trematoda), a parasite of Parapristipoma octolineatum (Teleostei).

Toguebaye BS, Quilichini Y, Diagne PM, Marchand B - Parasite (2014)

Bottom Line: The polaroplast is divided into two regions: an outer electron-dense cup with granular content and lacking lamellae and an internal region, less electron-dense, composed of irregularly arranged sacs.The posterior vacuole, with an amorphous electron-dense content, is present.The new species is compared with other species of Nosema from trematodes.

View Article: PubMed Central - HTML - PubMed

Affiliation: Université Cheikh Anta Diop de Dakar, Laboratoire de Parasitologie, Faculté des Sciences et Techniques, BP 5055, Dakar, République du Sénégal.

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Nosema podocotyloidis n. sp. A. Mature spore with 15 coils of polar tube. B. Detail of the anterior region of a mature spore showing the anchoring disc (AD) and the polar sac (PS). C. Transversally sectioned polar tube coils revealing the different layers. D. Detail of the polaroplast revealing the structure of the outer or anterior region (AP) and of the inner or posterior region (PP). AP: anterior polaroplast; EN: endospore; EX: exospore; PT: polar tube; PP: posterior polaroplast; PS: polar sac; PV: posterior vacuole. Scale Bars: A, B and D, 1 μm; C, 0.1 μm.
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Figure 4: Nosema podocotyloidis n. sp. A. Mature spore with 15 coils of polar tube. B. Detail of the anterior region of a mature spore showing the anchoring disc (AD) and the polar sac (PS). C. Transversally sectioned polar tube coils revealing the different layers. D. Detail of the polaroplast revealing the structure of the outer or anterior region (AP) and of the inner or posterior region (PP). AP: anterior polaroplast; EN: endospore; EX: exospore; PT: polar tube; PP: posterior polaroplast; PS: polar sac; PV: posterior vacuole. Scale Bars: A, B and D, 1 μm; C, 0.1 μm.

Mentions: The mature spores were broadly oval (Fig. 4A). In thin sections, the spore dimensions calculated were 3.6 (3.1–4.0) × 2.58 (1.8–3.3) μm (n = 25). The diplokaryon was found in the posterior part of young spores (Fig. 3D) but it was not clearly visible in mature spores.Figure 4.


Ultrastructure and development of Nosema podocotyloidis n. sp. (Microsporidia), a hyperparasite of Podocotyloides magnatestis (Trematoda), a parasite of Parapristipoma octolineatum (Teleostei).

Toguebaye BS, Quilichini Y, Diagne PM, Marchand B - Parasite (2014)

Nosema podocotyloidis n. sp. A. Mature spore with 15 coils of polar tube. B. Detail of the anterior region of a mature spore showing the anchoring disc (AD) and the polar sac (PS). C. Transversally sectioned polar tube coils revealing the different layers. D. Detail of the polaroplast revealing the structure of the outer or anterior region (AP) and of the inner or posterior region (PP). AP: anterior polaroplast; EN: endospore; EX: exospore; PT: polar tube; PP: posterior polaroplast; PS: polar sac; PV: posterior vacuole. Scale Bars: A, B and D, 1 μm; C, 0.1 μm.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4150386&req=5

Figure 4: Nosema podocotyloidis n. sp. A. Mature spore with 15 coils of polar tube. B. Detail of the anterior region of a mature spore showing the anchoring disc (AD) and the polar sac (PS). C. Transversally sectioned polar tube coils revealing the different layers. D. Detail of the polaroplast revealing the structure of the outer or anterior region (AP) and of the inner or posterior region (PP). AP: anterior polaroplast; EN: endospore; EX: exospore; PT: polar tube; PP: posterior polaroplast; PS: polar sac; PV: posterior vacuole. Scale Bars: A, B and D, 1 μm; C, 0.1 μm.
Mentions: The mature spores were broadly oval (Fig. 4A). In thin sections, the spore dimensions calculated were 3.6 (3.1–4.0) × 2.58 (1.8–3.3) μm (n = 25). The diplokaryon was found in the posterior part of young spores (Fig. 3D) but it was not clearly visible in mature spores.Figure 4.

Bottom Line: The polaroplast is divided into two regions: an outer electron-dense cup with granular content and lacking lamellae and an internal region, less electron-dense, composed of irregularly arranged sacs.The posterior vacuole, with an amorphous electron-dense content, is present.The new species is compared with other species of Nosema from trematodes.

View Article: PubMed Central - HTML - PubMed

Affiliation: Université Cheikh Anta Diop de Dakar, Laboratoire de Parasitologie, Faculté des Sciences et Techniques, BP 5055, Dakar, République du Sénégal.

Show MeSH
Related in: MedlinePlus