Two new Eimeria species (Protozoa: Eimeriidae) from wild rock ptarmigans, Lagopus muta islandorum, in Iceland
Two new Eimeria species (Protozoa: Eimeriidae) from wild rock ptarmigans, Lagopus muta islandorum, in Iceland
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DOI：
10.1007/s00436-007-0589-5
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发表时间：
2007-09-01
影响因子：
2
通讯作者：
Thorarinsdottir, S. Th.
中科院分区：
文献类型：
--
作者：
Skirnisson, K.;Thorarinsdottir, S. Th.
2006 年 10 月上旬，人们在冰岛东北部采集了 100 只岩雷鸟 Lagopus muta islandorum（Faber，1822），并检查了其是否有球虫寄生虫。鉴定出两种艾美耳球虫属物种，每种都被描述为一个新物种。一种物种的孢子化卵囊呈椭圆形，24.9 x 16.6（19.5-30 x 14.5-19）μm。卵囊有一个小珠孔和两层、光滑的壁，厚度约为 1.0 μm。不存在卵囊残留物，但存在一到三个极性颗粒。孢子被的末端呈圆形，与乳头状的 Stieda 体相对，尺寸为 14.3 x 6.3 (12-16.5 x 5.5-7) μm。孢子被含有一个折射体和一个弥散的颗粒状残留物；每个孢子被的全部内容物都被薄膜包围。第二艾美尔虫的孢子化卵囊呈近球形，24.7 x 22.2 (20-28 x 18-24.5) 微米。卵囊无珠孔，有两层壁，厚约1.5μm，外层表面粗糙。不存在卵囊残留，但存在一到两个极性颗粒。孢子囊有一个圆形末端，与乳头状斯泰达体相对，位于突出的亚斯泰达体顶部，大小为 14.4 x 8.0 (12-15.5 x 6.5-9) 微米。孢子囊含有弥散的颗粒状残留物，每个子孢子有两个不同大小的折射体。
One hundred rock ptarmigans, Lagopus muta islandorum (Faber, 1822), were collected in early October 2006 in northeastern Iceland and examined for coccidian parasites. Two Eimeria species were identified, and each is described as a new species. Sporulated oocysts of one species are ellipsoidal, 24.9 x 16.6 (19.5-30 x 14.5-19) mu m. Oocysts have a small micropyle and a two-layered, smooth wall similar to 1.0 mu m thick. An oocyst residuum is absent, but one to three polar granules are present. Sporocysts have a rounded end opposite a nipple-like Stieda body and are 14.3 x 6.3 (12-16.5 x 5.5-7) mu m. Sporocysts contain one refractile body and a diffuse granular residuum; the entire contents of each sporocyst is enclosed by a thin membrane. Sporulated oocysts of the second eimerian are subspherical, 24.7 x 22.2 (20-28 x 18-24.5) mu m. The oocysts are without a micropyle but with a two-layered wall, which is similar to 1.5 mu m thick, with the outer layer having a rough surface texture. Oocyst residuum is absent, but one to two polar granules are present. Sporocysts have a rounded end opposite the nipple-like Stieda body atop a prominent sub-Stieda body and are 14.4 x 8.0 (12-15.5 x 6.5-9) mu m. Sporocysts contain a diffuse granular residuum, and each sporozoite has two different-sized refractile bodies.