Antukhaev I K
Tsitologiia. 1977 Mar;19(3):288-92.
The ultrastructure of the macrogamete stage of Eimeria kotlani has been studied. The peculiarity of this eimerian parasite is that its development procedes within the host cell nucleus. The ultrastructure of the macrogamete of E. kotlani has much in common with that of other eimerians that are localized in the host cell cytoplasm. The differences noticed concern, first of all, the structural organization of wall forming bodies of both types (WF-1, WF-2). The WF-1 are originally arranged around the WF-2, as small electron opaque granules making a dark ring, to move towards the periphery of the macrogamete body with maturation. The WF-2 of E. kotlani macrogametes lack a labyrinth structure so characteristic of WF-2 of macrogametes of other eimerian species. The macrogamete of E. kotlani is limited with three membranes, the innermost membrane is interrupted. Pinocytosis is presumably a mode of the parasite's nutrition. The nutrients are supposed to be transported by vesicles originating from the nucleoplasm of the host cell and limited with two membranes. In result, the remaining nucleoplasm looks as a narrow space of small islets. The host cell cytoplasm reveals some degenerative changes only by the final step of the parasite's development.
已对科特兰艾美球虫大配子阶段的超微结构进行了研究。这种艾美球虫寄生虫的独特之处在于其发育过程发生在宿主细胞核内。科特兰艾美球虫大配子的超微结构与其他位于宿主细胞质中的艾美球虫有许多共同之处。首先，所观察到的差异涉及两种类型（WF - 1、WF - 2）壁形成体的结构组织。WF - 1最初围绕着WF - 2排列，呈小的电子不透明颗粒，形成一个暗环，随着成熟向大配子体的周边移动。科特兰艾美球虫大配子的WF - 2缺乏其他艾美球虫种类大配子的WF - 2所特有的迷宫结构。科特兰艾美球虫大配子由三层膜界定，最内层膜中断。推测胞饮作用是寄生虫的营养方式。营养物质被认为是由源自宿主细胞核质并由两层膜界定的小泡运输的。结果，剩余的核质看起来像是小胰岛的狭窄空间。仅在寄生虫发育的最后阶段，宿主细胞质才显示出一些退行性变化。
