Ribeiro M F, Guimarães A M
Departamento de Parasitologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil.
J Med Entomol. 1998 Nov;35(6):1029-33. doi: 10.1093/jmedent/35.6.1029.
A Encephalitozoon-like microsporidia was found in epithelial cells of the midgut and the salivary glands of Amblyomma cajennense (F.) and Anocentor nitens (Neumann) that had fed on rabbits. Ultrastructural studies demonstrated that all stages of the life cycle of the parasite occur in parasitophorous vacuoles and contain only 1 nucleus. The sporonts detach from the limiting membrane of the vacuole and divide by binary fission to produce the sporoblasts, each presenting a thickened electron-dense wall, and a primordium of a polar filament. Each spore contained a single nucleus, an electron-dense and rough exospore, an electron-lucent and thick endospore, and 5 coils of the polar tubule.
在以兔子为食的卡延花蜱（Amblyomma cajennense (F.)）和尼氏钝缘蜱（Anocentor nitens (Neumann)）的中肠和唾液腺上皮细胞中发现了一种类脑炎微孢子虫。超微结构研究表明，该寄生虫生命周期的所有阶段都发生在寄生泡中，且仅含1个细胞核。裂殖体从液泡的限制膜脱离，通过二分裂产生孢子母细胞，每个孢子母细胞都有一层增厚的电子致密壁和极丝原基。每个孢子含有一个单核、一个电子致密且粗糙的外孢子、一个电子透明且厚的内孢子以及5圈极小管。
