A new investigation of the marine ciliate, Trachelostyla pediculiformis (Cohn, 1866) Borror, 1972 (Ciliophora, Hypotrichida), with establishment of a new genus, Spirotrachelostyla nov gen.
A new investigation of the marine ciliate, Trachelostyla pediculiformis (Cohn, 1866) Borror, 1972 (Ciliophora, Hypotrichida), with establishment of a new genus, Spirotrachelostyla nov gen.
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对海洋纤毛虫 Trachelostyla pediculiformis (Cohn, 1866) Borror, 1972 (Ciliophora, Hypotrichida) 的一项新调查，建立了一个新属 Spirotrachelostyla nov.
DOI：
10.1016/j.ejop.2005.12.001
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发表时间：
2006-03-01
影响因子：
2.9
通讯作者：
Chen, ZG
中科院分区：
文献类型：
--
作者：
Gong, J;Song, WB;Chen, ZG
用活体观察法和蛋白浸渍法研究了中国北部渤海纤毛虫属纤毛虫T pediculiformis(Cohn，1866)Borror，1972的形态和纤毛。中国种群符合原始描述：活体大小约80-150×20-30 PM；背腹扁平，非螺旋形；轮廓细长，前部明显狭窄，后部不明显；平均14个大核结节，2个微核和42个腺膜；左侧16-24个环状，右侧边缘21-31个。共18个额腹横环：额区恒定I I环，腹侧恒定I环2个，横环扩大5个(TC)。三个不明显的尾缘(CC)；六个背部动体，具突出的纤毛。回顾了有关弓形虫的文献，表明迄今为止的描述并不十分一致。为阐明本种的分类地位，中国渤海沿岸的种群被指定为一新模式。对该新模式的小亚单位rRNA基因进行了测序，分子系统树基本支持该科的建立。根据所获得的资料，重新定义该属的纤毛：背腹扁平，身体非螺旋扭曲和拉长，口周明显狭窄；纤毛一般呈11：2：5：3型，即额区11环，腹环2个位于5个腹环之前，3个CC存在；1左1列边缘环不向后汇合。标题一新属--螺旋藻新种。将军。的分类群，但其特征是螺旋形的、纺锤形的身体形状和在口周区域数量可变的盘状物。本文提出了三个新组合：螺旋藻Spirotrhelostyle(Dragesco&Dragesco-Kerneis，1986)nov.梳子。[basionym：TrheloStyla spiris Dragesco&Dragesco-Kerneis，1986]，S.tani(Hu&Song，2002)11.梳子。[basionym：T tani Hu&Song，2002]和S.Singex(Kahl，1932)nov.梳子。[basionym：Stichotricha implex Kahl，1932]。(C)2006年爱思唯尔GnbH。版权所有。
The morphology and infraciliature of the type species of the ciliate genus Trachelostyla, T pediculiformis (Cohn, 1866) Borror, 1972, collected from the Bohai Sea near Tianjin, north China., were investigated using live observation and protargol impregnation. The Chinese population corresponds well with the original description, as follows: size about 80-150 x 20-30 pm in vivo; body dorsoventrally flattened and non-spiral; outline elongate, with anterior region conspicuously narrowed while posterior not; on average 14 macronuclear nodules, two micronuclei and 42 adoral membranelles; 16-24 cirri in left and 21-31 in right marginal row. In total 18 frontoventral-transverse cirri: constantly I I cirri in frontal area and two ventral ones together with five enlarged transverse cirri (TC). Three inconspicuous caudal cirri (CC); six dorsal kineties with prominent cilia. The literature on T pediculiformis Is critically reviewed, showing that the descriptions so far do not agree very well. To clarify the taxonomic status of this species, the population from the Chinese coast of the Bohai Sea is designated as a neotype. The small subunit rRNA gene was sequenced for the neotype and the molecular phylogenctic tree basically Supports the establishment of the family Trachelostylidae Small & Lynn, 1985. Based on the data obtained, the genus Trachelostyla Borror, 1972 is redefined thus: dorsoventrally flattened trachelostylids, body non-spirally twisted and elongate, with peristomal region Conspicuously narrowed; ciliature generally in 11:2:5:3 pattern, i.e. 11 cirri in frontal region, two ventral cirri located anterior to five TC, three CC present; one left and one right row of marginal cirri not confluent posteriorly. A new genus Spirotrachelostyla nov. gen. is proposed to include the taxa which were previously assigned to Trachelostyla but characterized by spirally twisted, spindle-like body shape and a variable number of cirri in the peristomal area. Three new combinations are suggested: Spirotrachelostyla spiralis (Dragesco & Dragesco-Kerneis, 1986) nov.. comb. [basionym: Trachelostyla spiralis Dragesco & Dragesco-Kerneis, 1986], S. tani (Hu & Song, 2002) nov. comb. [basionym: T tani Hu & Song, 2002] and S. simplex (Kahl, 1932) nov. comb. [basionym: Stichotricha simplex Kahl, 1932]. (c) 2006 Elsevier GnnbH. All rights reserved.