McAllister C T, Upton S J, Jacobson E R, Kopit W
Renal-Metabolic Laboratory (151-G), Department of Veterans Affairs Medical Center, Dallas, Texas 75216, USA.
J Parasitol. 1995 Apr;81(2):281-4.
Fecal samples from 50 captive inland bearded dragons, Pogona vitticeps (Ahl, 1926), bred in California, were examined for coccidian parasites. Sixteen (32%) of the lizards were found to be passing oocysts of Isospora amphiboluri Cannon, 1967, previously described from bearded dragons Pogona barbata (Cuvier, 1829) from Australia. Sporulated oocytes were spherical to subspherical, 25.3 x 25.1 (23-26 x 23-26) microns, with a shape index (length/width) of 1.0 (1.0-1.1). A micropyle, oocyst residuum, and polar granule were absent. Sporocyts were ovoidal, 17.0 x 11.4 (16-18 x 11-12) microns, with a shape index of 1.5 (1.4-1.7). A sporocyst residuum, Stieda, and substieda bodies were present, but parastieda bodies were absent. Sporozoites were elongated, 13.9 x 3.5 (12-15 x 3-4) microns in situ, containing spherical anterior and posterior refractile bodies. The occurrence of I. amphiboluri in P. vitticeps is a new host and geographic record for the parasite. Photomicrographs of the oocysts and endogenous life cycle stages of I. amphiboluri are presented for the first time.
对来自加利福尼亚人工饲养的50只内陆鬃狮蜥（鬃狮蜥，Pogona vitticeps (Ahl, 1926)）的粪便样本进行了球虫寄生虫检查。发现16只（32%）蜥蜴排出了1967年描述的来自澳大利亚髯狮蜥（Pogona barbata (Cuvier, 1829)）的两栖艾美耳球虫（Isospora amphiboluri Cannon）卵囊。孢子化的卵母细胞呈球形至亚球形，大小为25.3×25.1（23 - 26×23 - 26）微米，形状指数（长/宽）为1.0（1.0 - 1.1）。无微孔、卵囊残体和极粒。孢子囊呈卵圆形，大小为17.0×11.4（16 - 18×11 - 12）微米，形状指数为1.5（1.4 - 1.7）。有孢子囊残体、斯氏体和亚斯氏体，但无副斯氏体。子孢子呈细长形，原位大小为13.9×3.5（12 - 15×3 - 4）微米，含有球形的前后折光体。两栖艾美耳球虫在鬃狮蜥中的出现是该寄生虫的新宿主和地理记录。首次展示了两栖艾美耳球虫卵囊和内源性生命周期阶段的显微照片。
