Lainson R, Shaw J J
Wellcome Parasitology Unit, Instituto Evandro Chagas, Fundação Serviços de Saúde Pública, Pará, Brazil.
J Protozool. 1990 Jan-Feb;37(1):51-4. doi: 10.1111/j.1550-7408.1990.tb01115.x.
Feces from a specimen of Tamandua tetradactyla (Linn.) from Portel, Pará State, north Brazil, contained two different coccidial oocysts; one identified as Eimeria tamanduae Lainson 1968, and the other as a new species, described here as Eimeria corticulata n. sp. Oocysts of E. corticulata are ellipsoidal, 37.4 x 30.4 (31.2-43.7 x 23.7-35.0) microns, shape index (length/width) 1.2 (1.0-1.5). Oocyst wall 2.5-3.7 microns thick and composed of two layers; an outer thick, brown-yellow one with radial striations, and a thin inner smooth one: no visible micropyle. Oocyst residuum a large globule of about 10.7 x 10.3 microns, usually accompanied by a number of smaller attached globules. Sporocysts ellipsoidal, 21.0 x 11.0 (20.0-22.5 x 10.0-12.5) microns, with a conspicuous Stieda body; shape index 1.9 (1.6-2.2). Sporocyst residuum a small number of scattered granules: sporozoites 18.7 x 5.0 microns, with a large posterior refractile body. Eimeria zygodontomyis n. sp. is described in feces from Zygodontomys lasiurus (Lund) from the Serra dos Carajás, Pará. Oocysts ellipsoidal to cylindrical, 16.5 x 12.0 (13.7-18.7 x 11.2-12.3) microns, shape index 1.4 (1.2-1.5). Wall colorless, smooth, single-layered and about 0.6 micron thick: no micropyle. No oocyst residuum, but a polar granule of about 1.8 x 1.0 microns is sometimes present. Sporocysts ellipsoidal, 8.4 x 5.5 (7.5-8.7 x 5.0-6.2) microns, shape index 1.5 (1.4-1.7), with a thin colorless wall and a delicate Stieda body. Sporozoites enclose a compact residuum of about 2.5 x 3.7 microns.
来自巴西北部帕拉州波特雷尔的一只四趾食蚁兽（Tamandua tetradactyla (Linn.)）粪便样本中含有两种不同的球虫卵囊；一种被鉴定为1968年发现的食蚁兽艾美球虫（Eimeria tamanduae Lainson），另一种为新物种，在此描述为皮层艾美球虫（Eimeria corticulata n. sp.）。皮层艾美球虫的卵囊呈椭圆形，大小为37.4×30.4（31.2 - 43.7×23.7 - 35.0）微米，形状指数（长/宽）为1.2（1.0 - 1.5）。卵囊壁厚2.5 - 3.7微米，由两层组成；外层厚，呈棕黄色，有放射状条纹，内层薄且光滑：未见明显微孔。卵囊残体为一个约10.7×10.3微米的大球体，通常伴有一些附着的较小球体。孢子囊呈椭圆形，21.0×11.0（20.0 - 22.5×10.0 - 12.5）微米，有明显的斯氏体；形状指数为1.9（1.6 - 2.2）。孢子囊残体为少量散在的颗粒：子孢子大小为18.7×5.0微米，有一个大的后部折光体。锯齿稻鼠艾美球虫（Eimeria zygodontomyis n. sp.）是在来自帕拉州卡拉雅斯山脉的锯齿稻鼠（Zygodontomys lasiurus (Lund)）粪便中发现并描述的。卵囊呈椭圆形至圆柱形，16.5×12.0（13.7 - 18.7×11.2 - 12.3）微米，形状指数为1.4（1.2 - 1.5）。卵囊壁无色、光滑、单层，约0.6微米厚：无微孔。无卵囊残体，但有时存在一个约1.8×1.0微米的极粒。孢子囊呈椭圆形，8.4×5.5（7.5 - 8.7×5.0 - 6.2）微米，形状指数为1.5（1.4 - 1.7），有薄的无色壁和精致的斯氏体。子孢子内有一个约2.5×3.7微米的紧密残体。
