Wharton D A
Parasitology. 1979 Aug;79(1):13-28. doi: 10.1017/s0031182000051945.
The egg of Syphacia obvelata is a flattened elipsoid. The egg-shell consists of 5 layers: external uterine layer, internal uterine layer, vitelline layer, chitinous layer and lipid layer. An operculum is present at one pole of the egg. The opercular groove consists of a break in the uterine layers and the modification of the chitinous layer by the deposition of lipoprotein material. On the curved side of the egg the uterine layers are modified to form alternate ridges and depressions. Discrete spaces are present in the internal uterine layer between the ridges. These are open to the exterior via pores in the external uterine layer. The structure of the uterine layers is quite different on the flattened side of the egg. The morphology of the reproductive system and the formation of the egg-shell is described. It is suggested that the complex structure of the uterine layers of oxyurids forms by a self-assembly process.
奥氏管状线虫的虫卵呈扁平椭圆形。卵壳由五层组成：子宫外层、子宫内层、卵黄层、几丁质层和脂质层。卵的一极有一个卵盖。卵盖沟由子宫层的中断以及几丁质层因脂蛋白物质沉积而发生的改变组成。在卵的弯曲侧，子宫层发生改变，形成交替的嵴和凹陷。子宫内层的嵴之间存在离散的空间。这些空间通过子宫外层的孔与外部相通。卵扁平侧的子宫层结构有很大不同。描述了生殖系统的形态和卵壳的形成。有人提出，尖尾线虫子宫层的复杂结构是通过自组装过程形成的。
