Produção Nacional
Revisado por pares
Ultrastructural Studies of Henneguya rhamdia n. sp. (Myxozoa) a Parasite from the Amazon Teleost Fish, Rhamdia quelen (Pimelodidae)
2005; Wiley; Volume: 52; Issue: 6 Linguagem: Inglês
10.1111/j.1550-7408.2005.00063.x
ISSN1550-7408
AutoresEdílson Matos, Jessica Tajdari, Carlos Azevedo,
Tópico(s)Marine Ecology and Invasive Species
ResumoAbstract. Henneguya rhamdia n. sp. is described in the gill filaments of the teleost fish Rhamdia quelen , collected from the Peixe Boi River, State of Pará, Brazil. This myxosporean produced spherical to ellipsoidal plasmodia, up to 300 μm in diameter, which contained developmental stages, including spores. Several dense bodies up to 2 μm in diameter were observed among the spores. The spore body was ellipsoidal (13.1 μm in length, 5.2 μm in width, and 2.5 μm in thickness) and each of the two valves presented a tapering tail (36.9 μm in length). These valves surrounded the binucleated sporoplasm cell and two equal ellipsoidal polar capsules (4.7 × 1.1 μm), which contained 10–11 (rarely 12) polar filament coils. The sporoplasm contained sporoplasmosomes with a laterally eccentric dense structure with a half‐crescent section. Based on the data obtained by electron microscopy and on the host specificity, the spores differed from previously described Henneguya species, mainly in their shape and size, number and arrangement of the polar filament coils, and sporoplasmosome morphology.
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