Liao Lijian, Ghaffar Abdul, Hu Xiaozhong
College of Fisheries, & Key Laboratory of Mariculture (Ministry of Education), Ocean University of China, Qingdao 266003, China; Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education), & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China.
College of Fisheries, & Key Laboratory of Mariculture (Ministry of Education), Ocean University of China, Qingdao 266003, China; Key Laboratory of Evolution and Marine Biodiversity (Ministry of Education), & Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China.
Eur J Protistol. 2025 Apr;98:126138. doi: 10.1016/j.ejop.2025.126138. Epub 2025 Feb 22.
The morphology and morphogenesis of a new Stichotrichida species, Heterodeviata longa nov. spec., isolated from a brackish water habitat in Qingdao, China, were investigated using live observation and the protargol staining method. The new species is morphologically distinguished by possessing one buccal, three to five parabuccal and three frontal cirri, one long frontoventral row of ca. 12 cirri extending beyond mid-body, four left and two right marginal cirral rows, and two dorsal kineties: (1) left dorsal kinety bipolar, comprising 16-23 dikinetids, and with one to three caudal cirri at its rear end, while (2) right dorsal kinety comprising only two dikinetids. During morphogenesis, four frontal-ventral cirral anlagen form both in the proter and the opisthe. The parental adoral zone of membranelles remains intact and is completely inherited by the proter. The anlagen for marginal rows and the left dorsal kinety develop intrakinetally. The right dorsal kinety is generated dorsomarginally. The 18S rRNA gene sequence of the new species has a similarity of 99.6 % and 98.1 % with two other congeners. Phylogenetic analysis supported their close relationship and the monophyly of the genus Heterodeviata.
利用活体观察和蛋白银染色方法，对从中国青岛咸淡水生境中分离出的一种新的腹毛目物种——长异偏体虫（Heterodeviata longa nov. spec.）的形态和形态发生进行了研究。该新物种在形态上的特征为：具有1根口围触毛、3至5根副口围触毛和3根额触毛；1排约12根长的额腹触毛，延伸至虫体中部之后；4排左侧缘触毛和2排右侧缘触毛；2列背纤毛：（1）左列背纤毛双极型，由16至23个双动基列组成，后端有1至3根尾触毛，而（2）右列背纤毛仅由2个双动基列组成。在形态发生过程中，额腹触毛原基在虫体前段和后段均有形成。亲体的小膜口缘区保持完整，并完全由虫体前段继承。缘触毛列和左列背纤毛的原基在动基列内发育。右列背纤毛从背边缘产生。新物种的18S rRNA基因序列与另外两个同属物种的相似性分别为99.6%和98.1%。系统发育分析支持它们之间的密切关系以及异偏体虫属的单系性。
