Science and Mathematics Division, Eastern Oklahoma State College, Idabel, OK, 74745, USA.
Department of Zoology and Physiology, University of Wyoming, Casper, WY, 82601, USA.
Syst Parasitol. 2021 Dec;98(5-6):589-594. doi: 10.1007/s11230-021-09999-9. Epub 2021 Sep 5.
The Carolina chickadee, Poecile carolinensis Audubon is a relatively small songbird belonging to the tit and chickadee family Paridae. Feces from three P. carolinensis from Polk County, Arkansas, USA, and a single P. carolinensis in McCurtain County, Oklahoma, USA, were collected and examined for coccidia; the latter bird was found to be passing a new species of Isospora. Oöcysts of Isospora oklahomaensis n. sp. are subspheroidal to ovoidal with a smooth to slightly-pitted bi-layered wall, measure (L × W) 32.1 × 28.3 µm, and have a length/width (L/W) ratio of 1.1; a micropyle and oöcyst residuum were absent but a bilobed and refractile polar granule is present. Sporocysts are ellipsoidal and measure 18.4 × 11.8 µm, L/W 1.6; a prominent Stieda body is present as well as a distinct sub-Stieda body. The sporocyst residuum is composed of an irregular mass of granules lying between and dispersed among the sporozoites. This is the first coccidian described from the Carolina chickadee and, most importantly, only the second described from a member of the Paridae, worldwide.
卡罗莱纳雀，Poecile carolinensis Audubon 是一种相对较小的鸣禽，属于山雀和雀科 Paridae 家族。从美国阿肯色州波尔克县的三只 P. carolinensis 和美国俄克拉荷马州麦柯廷县的一只 P. carolinensis 收集并检查了粪便中的球虫；后者发现正在通过一种新的等孢子球虫。等孢子球虫属 oklahomaensis n. sp. 的卵囊呈亚球形至卵球形，具有光滑至略带凹陷的双层壁，大小为 (L × W) 32.1 × 28.3 µm，长/宽 (L/W) 比值为 1.1；无卵盖和卵囊残留物，但存在双叶状和折射性极粒。孢子囊呈椭圆形，大小为 18.4 × 11.8 µm，L/W 为 1.6；存在明显的斯泰达体和明显的次斯泰达体。孢子囊残留物由散布在孢子虫之间的不规则颗粒团组成。这是从卡罗莱纳雀中描述的第一种球虫，而且，最重要的是，这是全世界从雀科成员中描述的第二种球虫。
