Sakashita Keita, Tokiwa Toshihiro, Suzuki Ryotaro, I Taisei, Suzuki Mariko, Itoi Asahi, Yamamoto Masami, Yoshimura Hisashi
Laboratory of Veterinary Parasitology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonancho, Musashino, Tokyo, Japan.
Laboratory of Physiological Pathology, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, 1-7-1 Kyonancho, Musashino, Tokyo, Japan.
Int J Parasitol Parasites Wildl. 2025 Feb 7;26:101046. doi: 10.1016/j.ijppaw.2025.101046. eCollection 2025 Apr.
The Ryukyu long-furred rat, (Rodentia: Muridae), is an endangered species endemic to the Tokunoshima, Amami-Oshima, and Okinawajima Islands, which are part of Japan's southwestern islands. During the pathological examination of a deceased wild individual from Tokunoshima Island, lymphoma and infection with three nonnative parasites, (Nematoda: Angiostrongylidae) (Nematoda: Trichosomoididae) and (Cestoda: Taeniidae), were identified. Among these, is a zoonotic species, with invasive rats as the final hosts and mollusks as intermediate hosts. Although the presence of has been widely reported across the southwestern islands of Japan, this is the first record of this species on the Tokunoshima Island. With this study, infection in wild is now confirmed in populations from all three islands where this species is found.
琉球长毛鼠（啮齿目：鼠科）是一种濒危物种，特产于日本西南部岛屿中的德之岛、奄美大岛和冲绳岛。在对一只来自德之岛的死亡野生个体进行病理检查时，发现了淋巴瘤以及感染了三种非本地寄生虫，即管圆线虫（线虫纲：管圆线虫科）、类圆线虫（线虫纲：类圆线虫科）和绦虫（绦虫纲：带绦虫科）。其中，管圆线虫是一种人畜共患病原体，以侵入性鼠类作为终末宿主，软体动物作为中间宿主。尽管在日本西南部岛屿广泛报道了管圆线虫的存在，但这是该物种在德之岛的首次记录。通过本研究，现已证实在发现该物种的所有三个岛屿的野生种群中均存在管圆线虫感染。
