Ito Akira, Tokiwa Toshihiro
Ookusa Animal Clinic, Ookusa 503, Matsue, Shimane 690-0032, Japan.
Division of Pathobiological Analysis, Department of Veterinary Pathobiology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan.
Eur J Protistol. 2018 Feb;62:1-10. doi: 10.1016/j.ejop.2017.10.001. Epub 2017 Oct 20.
We described the infraciliature of Opisthotrichum janus, Epidinium ecaudatum, and Ophryoscolex purkynjei, belonging to the family Ophryoscolecidae, from pyridinated silver carbonate impregnated specimens. The adoral polybrachykinety is C-shaped in Opi. janus, whereas it is spiral-shaped in Epi. ecaudatum and Oph. purkynjei. The vestibular polybrachykinety is slender and short in Opi. janus, whereas slender and long in Epi. ecaudatum and Oph. purkynjei. The paralabial kineties are composed of several short kineties along the adoral polybrachykinety. The dorsal polybrachykinety is displaced posteriorly. This study provides information on the diagnostic features of the subfamily Ophryoscolecinae to which Opi. janus, Epi. ecaudatum, and Oph. purkynjei belong. A C-shaped or spiral-shaped adoral polybrachykinety and slender vestibular polybrachykinety are the diagnostic features of the subfamily Ophryoscolecinae in addition to their general features of a cylindrical body, tubular vestibulum, dorsal ciliary zone considerably displaced posteriorly, well developed skeletal plates, and macronucleus beneath the right body surface. Opi. janus, Epi. ecaudatum, and Oph. purkynjei show the basic form of morphogenesis of the ciliature, similar to that in the subfamily Diplodiniinae, with four primordia developing into the oral and dorsal ciliature.
我们从经吡啶化碳酸银浸渍的标本中描述了属于Ophryoscolecidae科的Janus后口藻、无尾艾美虫和浦肯野前口虫的纤毛下结构。Janus后口藻的口侧多短列纤毛呈C形，而无尾艾美虫和浦肯野前口虫的呈螺旋形。Janus后口藻的前庭多短列纤毛细长且短，而无尾艾美虫和浦肯野前口虫的细长且长。唇旁纤毛列由沿口侧多短列纤毛的几个短纤毛列组成。背侧多短列纤毛向后移位。本研究提供了有关Janus后口藻、无尾艾美虫和浦肯野前口虫所属的Ophryoscolecinae亚科诊断特征的信息。除了它们具有圆柱形身体、管状前庭、背侧纤毛区明显向后移位、骨骼板发育良好以及右体表下方有大核的一般特征外，C形或螺旋形的口侧多短列纤毛和细长的前庭多短列纤毛是Ophryoscolecinae亚科的诊断特征。Janus后口藻、无尾艾美虫和浦肯野前口虫显示出纤毛结构形态发生的基本形式，类似于Diplodiniinae亚科，有四个原基发育成口部和背侧纤毛结构。
