Tokiwa Toshihiro, Chou Shyun, Kitazoe Hina, Ito Keiko, Torimoto Ryouta, Shoshi Yuki, Sanjoba Chizu, Yamamoto Masami, Yoshimura Hisashi
Laboratory of Veterinary Parasitology, School of Veterinary Medicine, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonancho, Musashino, Tokyo, 180-0023, Japan.
Amami Dog & Cat Animal Hospital, Nakagachi, Tatsugocho, Oshima, Kagoshima, 894-0106, Japan.
Int J Parasitol Parasites Wildl. 2022 May 30;18:194-200. doi: 10.1016/j.ijppaw.2022.05.006. eCollection 2022 Aug.
The Amami rabbit, (Mammalia: Lagomorpha: Leporidae), is a relict and endangered species endemic to the Amami-Oshima and Tokunoshima Islands, located in southwestern Japan. Here, we described three new species of (Apicomplexa: Eimeriidae) parasites detected from fecal samples of wild Amami rabbits. n. sp., recorded in 21 (58.3%) samples, has ellipsoidal oocysts with two walls and micropyle, 26.0 × 16.6 μm, and elongate-ovoidal sporocysts, 13.1 × 6.3 μm, with Stieda body. n. sp., recorded in 9 (25.0%) samples, has ellipsoidal oocysts with two walls and micropyle, 34.7 × 21.4 μm, and elongate-fusiform to elongate-ovoidal sporocysts, 15.7 × 8.3 μm, with Stieda and substieda bodies. n. sp., recorded in 13 (36.1%) samples, has ellipsoidal oocysts with two walls and micropyle, 20.9 × 14.5 μm, and elongate-ovoidal sporocysts, 10.4 × 5.0 μm, with Stieda body. The three new species can be distinguished by the size and color of their oocysts. Further studies related to the pathogenicity of these parasites can improve the breeding and propagation procedures of the Amami rabbit.
奄美兔（哺乳纲：兔形目：兔科）是一种残遗濒危物种，特产于日本西南部的奄美大岛和德之岛。在此，我们描述了从野生奄美兔粪便样本中检测到的艾美耳科（顶复门）3种新的寄生虫。新种1记录于21份（58.3%）样本中，其卵囊呈椭圆形，有两层壁和卵孔，大小为26.0×16.6μm，孢子囊呈长椭圆形，大小为13.1×6.3μm，有斯氏体。新种2记录于9份（25.0%）样本中，其卵囊呈椭圆形，有两层壁和卵孔，大小为34.7×21.4μm，孢子囊呈细长梭形至长椭圆形，大小为15.7×8.3μm，有斯氏体和亚斯氏体。新种3记录于13份（36.1%）样本中，其卵囊呈椭圆形，有两层壁和卵孔，大小为20.9×14.5μm，孢子囊呈长椭圆形，大小为10.4×5.0μm，有斯氏体。这3个新种可通过其卵囊的大小和颜色来区分。与这些寄生虫致病性相关的进一步研究可改进奄美兔的繁育程序。
