Morphology, morphogenesis and molecular phylogeny of a novel saline soil ciliate, Lamtostyla salina n. sp (Ciliophora, Hypotricha)
Morphology, morphogenesis and molecular phylogeny of a novel saline soil ciliate, Lamtostyla salina n. sp (Ciliophora, Hypotricha)
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一种新型盐渍土纤毛虫 Lamtostyla salina n 的形态学、形态发生和分子系统发育。
DOI：
10.1016/j.ejop.2016.09.005
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发表时间：
2016-10-01
影响因子：
2.9
通讯作者：
Al-Rasheid, Khaled A. S.
中科院分区：
文献类型：
--
作者：
Dong, Jingyi;Lu, Xiaoteng;Al-Rasheid, Khaled A. S.
一种新的盐渍土准毛虫Lamtostyla salina n.的形态和形态发生。采自中国北方大庆龙凤湿地的 sp.，根据现场观察和普罗他戈染色标本进行了研究。新种的特征是：体柔韧但不收缩，呈披针形，前端宽圆形，最宽处约体长的1/3，后端窄圆形；皮质颗粒无色分散；两栖类中线卷毛列终止于中体之前，由 5-13 个卷毛组成； 4-20个额腹纤毛排列成2-4行；额部有 3 个，颊部有 1 个，横向纤毛有 2-6 个；通常为一左一右边缘行，分别由 17-51 和 20-51 cirri 组成；通常有两个背侧运动；两个大核结节和两个微核。形态发生是 Lamtostyla 属的典型特征：亲本结构参与原体额腹横原基的形成。基于小亚基核糖体 DNA 序列数据的系统发育分析表明，Lamtostyla 的系统位置相当不稳定，整个树的支持值较低。然而，所有系统发育分析都显示了 Lamtostyla 和 Bistichella 之间公认的密切关系。 (C) 2016 爱思唯尔有限公司。版权所有。
The morphology and morphogenesis of a new saline soil hypotrich, Lamtostyla salina n. sp., collected from Longfeng Wetland in Daqing, north China, were studied based on live observations and protargol stained specimens. The new species is characterized as follows: body very flexible but not contractile, lanceolate with anterior end broadly rounded, widest at about 1/3 of body length, posterior end narrowly rounded; cortical granules colourless and scattered; amphisiellid median cirral row ends ahead of mid-body, composed of 5-13 cirri; 4-20 frontoventral cirri arranged in 2-4 rows; three frontal, one buccal and 2-6 transverse cirri; usually one left and one right marginal row, composed of 17-51 and 20-51 cirri respectively; usually two dorsal kineties; two macronuclear nodules and two micronuclei. Morphogenesis is typical of the genus Lamtostyla: parental structures are involved in the formation of frontoventral transverse anlagen in the proter. Phylogenetic analyses based on small subunit ribosomal DNA sequence data reveal that the systematic position of Lamtostyla is rather unstable with low support values across the tree. However, a well-recognized close relationship between Lamtostyla and Bistichella are shown in all phylogenetic analyses. (C) 2016 Elsevier GmbH. All rights reserved.