MORPHOLOGICAL CHARACTERIZATION OF OSCILLATORIALES (CYANOBACTERIA) FROM ROSS-ISLAND AND SOUTHERN VICTORIA LAND, ANTARCTICA
MORPHOLOGICAL CHARACTERIZATION OF OSCILLATORIALES (CYANOBACTERIA) FROM ROSS-ISLAND AND SOUTHERN VICTORIA LAND, ANTARCTICA
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DOI：
10.1017/s095410209100007x
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发表时间：
1991-03-01
影响因子：
1.6
通讯作者：
KIBBLEWHITE, AL
中科院分区：
文献类型：
--
作者：
BROADY, PA;KIBBLEWHITE, AL
从淡水和咸水湖泊和池塘，以及从陆地栖息地的Oscillatoriales现场人口，其特征在于其形态和形态的基础上。 15种形态型主要从以下特征中识别：毛状体的横截面形状，顶端细胞上有无帽状体，在共同鞘内有无大量毛状体，以及毛状体宽度分布。 在可能的情况下，将形态型分配给罗斯海地区早期藻类调查所描述的传统物种，并对早期描述进行重新评估，在某些情况下使用来自原始集合相同位置的材料。 描述了以下传统种：鞘丝藻（Lyngbya murrayi）、鞘鞘微鞘藻（Microcoleus vaginatus）、弯曲颤藻（Oscillatoria deflexa）、O. koettlitzi，O. priestleyi，O. sancta、秋席藻Phormidium autumnale和近喙席藻P.subproboscidea。 M. vaginatus、O. priestleyi和P.autumnale的毛状体宽度的基础上进行识别。 本文描述了采自冰川寒冻石池的一新种和一变种，即以扁平毛状体为特征的一属。 C. glaciale sp. nov.与C.冰川湾螺旋虫新变种其中毛状体更窄并且螺旋盘绕。
Field population of Oscillatoriales, from fresh and saline lakes and ponds, and from terrestrial habitats, are characterised on the basis of their morphology and morphometry. Fifteen morphotypes are recognized principally from the following characteristics; cross-sectional shape of the trichome, presence or absence of a calyptra on the apical cell, occurrence or otherwise of numerous trichomes within a common sheath, and trichome width distribution. Where possible morphotypes are assigned to traditional species described by earlier investigations of algae in the Ross Sea region and a reassessment is made of the early descriptions, in some cases using material from the identical locations to the original collections. The following traditional species are described; Lyngbya murrayi, Microcoleus vaginatus, Oscillatoria deflexa, O. koettlitzi, O. priestleyi, O. sancta, Phormidium autumnale and P. subproboscidea. Intraspecific morphotypes of M. vaginatus, O. priestleyi and P. autumnale are recognised on the basis of trichome width. A new species and variety of Crinalium (Crow) Winder, Stal & Mur, a genus characterized by flattened trichomes, are described from cryoconite ponds on glaciers. C. glaciale sp. nov. possesses wide, straight trichomes in contrast to C. glaciale var. helicoides nov. var. in which trichomes are narrower and helically coiled.