Abdel-Haleem Heba M, Al-Quraishy Saleh, Duszynski Donald W, Abdel-Baki Abdel-Azeem S
Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.
Syst Parasitol. 2015 Mar;90(3):301-6. doi: 10.1007/s11230-015-9552-5. Epub 2015 Feb 19.
A new species of Isospora Schneider, 1881 was discovered in the Mediterranean house gecko, Hemidactylus turcicus (Linnaeus) in Saudi Arabia. Both exogenous (sporulated oöcysts) and endogenous developmental stages (meronts, gamonts) were studied and measured. Sporulated oöcysts are spheroidal to slightly subspheroidal, 17-22 (18) µm wide, with a smooth, bi-layered oöcyst wall; micropyle, polar granule and oöcyst residuum are all absent. Sporocysts are ovoidal, 9-11 × 6-8 (10 × 7) µm, with both Stieda and sub-Stieda bodies, a dispersed granular sporocyst residuum, and four sporozoites. Endogenous stages develop extranuclearly in the cytoplasm of epithelial cells of the small intestine. Early uninucleate meronts are spheroidal, c.3-5 (4) µm wide. Multinucleated meronts are subspheroidal, 11-15 × 9-12 (13 × 10) µm, but mature meront and merozoites were not seen. Mature microgamonts, with up to 60 microgametes, are spheroidal, 11-15 (13) µm; macrogamonts are subspheroidal, with a prominent central nucleus, and measured 11-14 × 7-10 (12 × 8) µm.
1881年，在沙特阿拉伯的地中海家壁虎（Hemidactylus turcicus，林奈）体内发现了等孢球虫属（Isospora Schneider）的一个新物种。对其外源性（孢子化卵囊）和内源性发育阶段（裂殖体、配子体）进行了研究和测量。孢子化卵囊呈球形至略呈亚球形，宽17 - 22（18）µm，卵囊壁光滑，有双层结构；无微孔、极粒和卵囊残体。孢子囊呈卵圆形，9 - 11×6 - 8（10×7）µm，有斯氏体和亚斯氏体，孢子囊残体呈分散颗粒状，有四个子孢子。内源性阶段在小肠上皮细胞的细胞质中进行核外发育。早期单核裂殖体呈球形，宽约3 - 5（4）µm。多核裂殖体呈亚球形，11 - 15×9 - 12（13×10）µm，但未见成熟裂殖体和裂殖子。成熟的小配子体有多达60个小配子，呈球形，11 - 15（13）µm；大配子体呈亚球形，有一个突出的中央细胞核，大小为11 - 14×7 - 10（12×8）µm。
