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Coelomophaga chydori n. gen. n. sp. Protiste parasite de Chydorus sphaericus Muller, 1785. Cycle, ultrastructures, position systématique

Coelomophaga chydori n. gen. n. sp. protist parasite of Chydorus sphaericus Muller, 1785. Cycle, ultrastructures, systematic position

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Summary

Coelomophaga chydori n. gen. n. sp. is described from Chydorus sphaericus (Crustacea, Cladocera). The natural life cycle of this pathogen is studied with light and electron microscope: infesting uninucleate sporoplasms, plasmodial stages, uninucleate sporoblasts which after cytoplasmic elimination give rise to spores. Mature spores are oval in shape and average about 6,2×4,3 μm. Affinities of C. chydori to closely related taxa are briefly discussed. At present this parasite is classified in the Nephridiophagidae (Microspora, Haplosporidiidae).

Résumé

Coelomophaga chydori n. gen. n. sp. parasite de Chydorus sphaericus (Crustacé, Cladocère) est décrit. Le cycle complet de ce pathogène mortel est étudié au microscope photonique et au microscope électronique: sporoplasmes infestants uninucléés, stades plasmodiaux, sporoblastes uninucléés qui donnent des spores après élimination d'un reliquat cytoplasmique. Les spores mûres mesurent en moyenne 6,2×4,3 μm. La position systématique de C. chydori est discutée. Ce parasite est très provisoirement rapproché de la famille des Nephridiophagidae (Microspora, Haplosporidiidae).

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Manier, J.F., Akbarieh, M. & Bouix, G. Coelomophaga chydori n. gen. n. sp. Protiste parasite de Chydorus sphaericus Muller, 1785. Cycle, ultrastructures, position systématique. Z. F. Parasitenkunde 51, 147–158 (1977). https://doi.org/10.1007/BF00500954

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  • DOI: https://doi.org/10.1007/BF00500954

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