对1968年邓肯描述的卵形艾美耳球虫（顶复门：艾美耳科）的重新描述，该球虫来自灰领花栗鼠（啮齿目：松鼠科）。
Redescription of Eimeria ovata Duncan, 1968 (Apicomplexa: Eimeriidae) from the gray-collared Chipmunk Neotamias cinereicollis Allen (Rodentia: Sciuridae).
作者信息
Hnida John A
机构信息
Department of Microbiology and Immunology, Midwestern University, 19555 N. 59th Avenue, Glendale, Arizona, 85308, USA.
出版信息
Syst Parasitol. 2025 Apr 22;102(3):31. doi: 10.1007/s11230-025-10231-1.
Eimeria ovata Duncan, 1968 is redescribed from 2 of 39 (5%) gray-collared chipmunks Neotamias cinereicollis Allen in Arizona, USA. Sporulated oöcysts of this species are ovoidal, 26.3 × 20.3 (23-28 × 16-22) µm, with a length/width ratio of 1.4 (1.2-1.6), a pitted, bi-layered wall, and 0-2 polar granules; oöcyst residuum and micropyle are absent. Sporocysts are ovoidal, 13.3 × 8.2 (12-15 × 7-9) µm, with a length/width ratio of 1.7 (1.6-1.0), a Stieda body, and sporocyst residuum; sporozoites contain a posterior refractile body. The measurements and structural features of these oöcysts are similar to those reported for E. ovata described from the eastern chipmunk Tamias striatus. This is a new geographic record for this coccidian and the first report to include photomicrographs of its sporulated oöcyst.
卵圆艾美耳球虫（Eimeria ovata）Duncan，1968年，根据美国亚利桑那州39只灰领花栗鼠（Neotamias cinereicollis Allen）中的2只（5%）重新进行了描述。该物种的孢子化卵囊呈卵圆形，大小为26.3×20.3（23 - 28×16 - 22）µm，长宽比为1.4（1.2 - 1.6），壁为双层且有凹坑，有0 - 2个极粒；无卵囊残体和微孔。孢子囊呈卵圆形，大小为13.3×8.2（12 - 15×7 - 9）µm，长宽比为1.7（1.6 - 1.0），有斯氏体和孢子囊残体；子孢子含有一个后部折光体。这些卵囊的测量值和结构特征与从东部花栗鼠（Tamias striatus）描述的卵圆艾美耳球虫所报道的相似。这是该球虫的一个新地理记录，也是首次包含其孢子化卵囊显微照片的报告。
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