Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA.
Parasitol Res. 2012 May;110(5):1723-5. doi: 10.1007/s00436-011-2691-y. Epub 2011 Oct 18.
Nineteen (91%) of 21 rufous-and-white wrens (Thryothorus rufalbus) and five (71%) of seven plain wrens (Cantorchilus modestus) sampled from Costa Rica were positive for a new species of Isospora. Oocysts have a thin, smooth, double, colorless wall and measure 20.1 ± 1.4 × 23.4 ± 1.5 μm (18-24 × 20-26 μm) with an average length-width ratio of 1.2 μm. Sporocysts are ovoid, measure 9.5 ± 0.9 × 15.5 ± 1.1 μm (7-12 × 12-18 μm) with an average length-width ratio of 1.6 μm. A nipple-like steida body continuous with the sporocyst wall and a prominent oval-shaped substeida body are present. In addition to the four sporozoites, a single compact sporocyst residuum was present in each sporocyst. This is the first description of an Isospora species from the family Troglodytidae and the first report of Isospora from the rufous-and-white wren and plain wren.
从哥斯达黎加采集的 21 只棕白喉林莺（Thryothorus rufalbus）和 7 只普通画眉（Cantorchilus modestus）中，有 19 只（91%）和 5 只（71%）为一种新的等孢球虫（Isospora）阳性。卵囊具有薄而光滑的双层无色壁，大小为 20.1±1.4×23.4±1.5μm（18-24×20-26μm），平均长径比为 1.2μm。孢子囊呈卵形，大小为 9.5±0.9×15.5±1.1μm（7-12×12-18μm），平均长径比为 1.6μm。存在一个与孢子囊壁连续的乳头状斯蒂达体和一个明显的椭圆形副斯蒂达体。除了四个裂殖子外，每个孢子囊中还存在一个单一的紧凑孢子囊残留物。这是首次描述画眉科的等孢球虫，也是首次报道棕白喉林莺和普通画眉的等孢球虫。
