Trachta e Silva Evandro Amaral, Literák Ivan, Koudela Bretislav
Clinica Veterinária Animal, Nova Andradina, MS, Brasil.
Mem Inst Oswaldo Cruz. 2006 Aug;101(5):573-6. doi: 10.1590/s0074-02762006000500016.
Three new coccidian (Apicomplexa: Eimeriidae) species are reported from the lesser seed-finch, Oryzoborus angolensis from Brazil. Sporulated oocysts of Isospora curio n. sp. are spherical to subspherical; 24.6 x 23.6 (22-26 x 22-25) microm, shape-index (SI, length/width) of 1.04 (1.00-1.15). Oocyst wall is bilayerd, approximately 1.5 microm thick, smooth and colourless. Micropyle and oocyst residuum are absent. The sporocysts are ovoid, 13.2 x 10.9 (15-17 x 10-13) microm, SI = 1.56 (1.42-1.71), with a small Stieda body and residuum composed of numerous granules scattered among the sporozoites. Sporozoites are elongated and posses a smooth surface and two distinct refractile bodies. Oocysts of Isospora braziliensis n. sp. are spherical to subspherical, 17.8 x 16.9 (16-19 x 16-18) microm, with a shape-index of 1.06 (1.00-1.12) and a smooth, single-layered wall approximately 1 microm thick. A micropyle, oocyst residuum and polar granules are absent. Sporocysts are ellipsoid and slightly asymmetric, 13.2 x 10.8 (12-14 x 9-12) microm, SI = 1.48 (1.34-1.61). Each sporocyst contains a barely visible Stieda body and a residuum composed numerous of granules. Sporozoites are elongated and each of them contains two distinct refractile bodies. Oocysts of Isospora paranaensis n. sp. are subspherical to broadly ellipsoid 24.3 x 19.8 (22-26 x 18-22) microm, SI = 1.22 (1.15-1.38) with smooth single-layered wall approximately 1.5 microm thick. A micropyle and oocyst residuum are absent, but one distinct ellipsoid polar granule (2.5-3.5 x 1.5-2.5 microm) is present. Sporocyst are ovoid, 15.7 x 10.1 (14-18 x 8-12) microm, SI = 1.46 (1.31-1.72), with distinct Stieda and sub-Stieda bodies. Each sporocyst contains a spherical sporocyst residuum, 4 microm in diameter All described isosporan species represent a possible cause of acute coccidiosis for O. angolensis in captivity.
从巴西的小籽雀（Oryzoborus angolensis）体内发现了三种新的球虫（顶复门：艾美耳科）。新种库里奥等孢球虫（Isospora curio n. sp.）的孢子化卵囊呈球形至亚球形；大小为24.6×23.6（22 - 26×22 - 25）微米，形状指数（SI，长/宽）为1.04（1.00 - 1.15）。卵囊壁为双层，约1.5微米厚，光滑且无色。无微孔和卵囊残体。孢子囊呈卵形，13.2×10.9（15 - 17×10 - 13）微米，SI = 1.56（1.42 - 1.71），有一个小的斯氏体和由散布在子孢子间的许多颗粒组成的残体。子孢子细长，表面光滑，有两个明显的折光体。新种巴西等孢球虫（Isospora braziliensis n. sp.）的卵囊呈球形至亚球形，17.8×16.9（16 - 19×16 - 18）微米，形状指数为1.06（1.00 - 1.12），壁光滑，单层，约1微米厚。无微孔、卵囊残体和极粒。孢子囊呈椭圆形且稍不对称，13.2×10.8（12 - 14×9 - 12）微米，SI = 1.48（1.34 - 1.61）。每个孢子囊含有一个几乎不可见的斯氏体和由许多颗粒组成的残体。子孢子细长，每个子孢子含有两个明显的折光体。新种巴拉那等孢球虫（Isospora paranaensis n. sp.）的卵囊呈亚球形至宽椭圆形，24.3×19.8（22 - 26×18 - 22）微米，SI = 1.22（1.15 - 1.38），壁光滑，单层，约1.5微米厚。无微孔和卵囊残体，但有一个明显的椭圆形极粒（2.5 - 3.5×1.5 - 2.5微米）。孢子囊呈卵形，15.7×10.1（14 - 18×8 - 12）微米，SI = 1.46（1.31 - 1.72），有明显的斯氏体和亚斯氏体。每个孢子囊含有一个直径4微米的球形孢子囊残体。所有描述的等孢球虫物种都可能是圈养条件下小籽雀急性球虫病的病因。
