Morphological Variability of Loricae in Trachelomonas caudata Complex (Euglenophyta)
Morphological Variability of Loricae in Trachelomonas caudata Complex (Euglenophyta)
复制标题
尾络藻复合体（裸藻门）中 Loricae 的形态变异
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
J. Juran
中科院分区：
文献类型：
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作者：
K. Wołowski;M. Poniewozik;J. Juran
摘要
本研究记录了自然居群中的洛里卡和相关类群的超微结构变异。在此基础上，指出了裸藻囊裸藻分类系统中的错误。T. caudata和类群非常相似，它进行了检查，通过光学和扫描电子显微镜和能量色散X射线光谱（EDS）。后者的观察结果表明，不同推定类群的甲之间的化学成分相似，硅和铁作为主要成分，并没有一个化学元素被认为是一个非常重要的组成部分，络石藻信封-锰。所有观察到的形态类型被分类在一个复杂的基础上信封配置，并建立了“caudatae复合体”。我们的形态分析使我们得出结论，f。伪尾T. caudata应归入T. caudata，因为它们之间的形态差异是在自然环境中物种表型变异的典型范围内。同样的观点也适用于物种T。bernardinensis、T. fusiformis，T. allorgei和T. molesta，应该被认为是T.尾状体
Abstract
This study documented lorica ultrastructure variation in Corresponding author: and related taxa from natural populations. On that basis, inaccuracies in the taxonomic system of euglenoid Trachelomonas are pointed out. Loricae of T. caudata and taxa very similar to it were examined by light and scanning electron microscopy and by energy-dispersive X-ray spectroscopy (EDS). The latter observations showed similarity of chemical composition between loricae of different putative taxa, with silicon and iron as the main components, and the absence of a chemical element considered to be a very important component of trachelomonad envelopes - manganese. All observed morphotypes were classified in one complex based upon envelope configuration, and the “caudatae complex” was established. Our morphological analyses led us to conclude that f. pseudocaudata of T. caudata should be subsumed in the typical form or treated as a synonym of T. caudata, as the morphological differences between them are within the typical range of phenotypic variability of species from natural environments. The same view applies to the species T. bernardinensis, T. fusiformis, T. allorgei and T. molesta, which should be considered synonyms of T. caudata.