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Etude ultrastructurale de Nosemoides simocephali n. sp. (Microsporidie), parasite intestinal de la Daphnie Simocephalus vetulus Muller, 1776

Ultrastructural study of Nosemoides simocephali n. sp. (Microsporidia), parasitic in the digestive tract of the cladocera Simocephalus vetulus Muller, 1776

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Summary

The ultrastructural study of the Microsporidia Nosemoides simocephali n. sp., parasite of the digestive tract of the Cladocera Simocephalus vetulus has a great systematic interest because it confirms the genus Nosemoides Vinckier, 1975, whose diagnosis could be completed by the polysporous characteristic of its sporogony.

Thus, Nosemoides simocephali which is always in direct contact with the host-cytoplasm and never contains nuclei in the diplocaryon arrangement yields sporogonic plasmodia. Each sporoblast, uninucleate, changes into oval spore (length: 2.5–3 μm; width: 1.5–1.75 μm).

Résumé

L'étude ultrastructurale de la Microsporidie Nosemoides simocephali n. sp., parasite intestinal du Cladocère Simocephalus vetulus Muller, 1776, présente un grand intérêt systématique car elle confirme le genre Nosemoides Vinckier, 1975, dont la diagnose pourrait être complétée du caractère polysporé.

En effet, N. simocephali toujours au contact direct du cytoplasme de l'hôte et ne présentant jamais l'état diplocaryon produit des plasmodes sporogoniaux donnant naissance à des groupes sporoblastiques. Chaque sporoblaste, uninucléé, évolue en une spore ovoïde de 2,5–3 μm de long sur 1,5–1,75 μm de large.

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  1. Laboratoire d'Ichthyologie et de Parasitologie Générale, Université des Sciences et Techniques du Languedoc, F-34060, Montpellier Cédex, France

    Claude Loubès & Mostafa Akbarieh

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  1. Claude Loubès
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  2. Mostafa Akbarieh
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Loubès, C., Akbarieh, M. Etude ultrastructurale de Nosemoides simocephali n. sp. (Microsporidie), parasite intestinal de la Daphnie Simocephalus vetulus Muller, 1776. Z. Parasitenk. 54, 125–137 (1977). https://doi.org/10.1007/BF00380796

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