Two new Isospora species from the saffron finch, Sicalis flaveola in Brazil

• Published in: Acta parasitologica 2011-09, Vol.56 (3), p.239-244
• Main Authors: Coelho, Cleide D., Berto, Bruno P., Neves, Daniel M., de Oliveira, Vinícius M., Flausino, Walter, Lopes, Carlos Wilson G.
• Format: Article
• Language: English
• Subjects: Animal Systematics/Taxonomy/Biogeography; Apicomplexa; Biomedical and Life Sciences; Biomedicine; Coccidia; Ecology; Eimeriidae; Emberizidae; I. sicalisi sp. nov; Isospora; Isospora cetasiensis sp. nov; Medical Microbiology; Microbiology; oocysts; Parasitology; Passeriformes; Sicalis flaveola; South America
• ISSN: 1230-2821; 1896-1851
• DOI: 10.2478/s11686-011-0051-9

Two new coccidian species (Protozoa, Apicomplexa, Eimeriidae) are reported from the saffron finch Sicalis flaveola Linnaeus, 1766, a very common species in South America. Isospora cetasiensis sp. nov. oocysts are subspherical to ellipsoidal, 23.1 × 21.6 μm, with smooth, bilayered wall, ∼1.0 μm. Micropyle, oocyst residuum and polar granule are absent. Sporocysts are ovoidal, 15.1 × 10.9 μm. Stieda body is knob-like and substieda body is rounded. Sporocyst residuum is composed of many scattered granules and spherules of different sizes. Sporozoites are vermiform with one refractile body and a nucleus. Isospora sicalisi sp. nov. oocysts are subspherical to ellipsoidal, 27.5 × 25.2 μm, with a smooth, bilayered wall, ∼1.1 μm. Micropyle, oocyst residuum and polar granule are absent. Sporocysts are ellipsoidal, 17.2 × 11.7 μm. Stieda body is knob-like and substieda body is trapezoidal. Sporocyst residuum is composed of scattered granules and spherules of different sizes. Sporozoites are vermiform with one refractile body and a nucleus.