Henneguya caudicula n. sp. (Myxozoa, Myxobolidae) a Parasite of Leporinus lacustris (Osteichthyes, Anostomidae) from the High Paraná River, Brazil, with a Revision of Henneguya spp. Infecting South American Fish
2008; Wydawnictwo Uniwersytetu Jagiellońskiego; Volume: 47; Issue: 2 Linguagem: Inglês
ISSN
1689-0027
AutoresJ. C. Eiras, Ricardo Massato Takemoto, Gilberto Cezar Pavanelli,
Tópico(s)Aquaculture disease management and microbiota
ResumoThis paper describes the species Henneguya caudicula n. sp. that infects the gills of Leporinus lacustris Amaral Campos, 1945 (Osteichthyes, Anastomidae) from the Parana river, Brazil. The parasites belong to the intralamellar-vascular type as defined by Molnar (2002). The total length of the spore was 14.7 (14-16) μm, the spore body was ellipsoidal in frontal view and biconvex in lateral view, and measured 11.3 (11-12) μm long by 5.4 (5-6) μm wide, and was 3.6 (3-4) μm thick. The polar capsules were elongated with rounded posterior extremities and tapering anteriorly; they did not surpass the half-length of the spore and were equal in size, measuring 3.7 (3-4) μm in length and 1.5 μm in width; the polar filament formed 3 coils placed obliquely to the polar capsule axis; the tail was very short, 3.4 (3-4) μm long, usually slightly curved, the two caudal prolongations close together in most of the spores. A revision of all the Henneguya species infecting South American fish hosts is provided.
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