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西藏色林错短纹藻属硅藻初报
Authors
张玮
徐肖莹
王丽卿
王宝强
Publication date
1 January 2016
Publisher
Abstract
对西藏色林错2015年7月附着硅藻样品进行了观察和鉴定,发现了短纹藻属的3个物种,其中圆胞短纹藻(Brachysira aponina Kützing)为中国新纪录种,其他两个物种分别为小头短纹藻B.microcephala(Grunow)Compère和透明短纹藻B.vitrea(Grunow)Ross。通过光镜和扫描电镜观察,本报道对圆胞短纹藻的形态特征进行了详细描述,对小头短纹藻的2种表型和透明短纹藻的超微形态特征进行了重新描述。圆胞短纹藻的主要特征是末端窄圆形,中央区小或为圆形,壳缝直,壳缝两侧有明显的硅质纵肋。壳缝简单,远缝端具有"M"形结构。小头短纹藻表型1主要特征为末端近头状,中央区为不对称圆形,末端为"T"形结构。小头短纹藻表型2主要特征是壳面末端头状,中部线纹辐射排列,末端平行排列。透明短纹藻主要特征是壳面为椭圆形披针形,末端伸长成头状,中央区小,卵圆形,远缝端具"T"形结构。此外本报道还比较和讨论了3物种与短纹藻属其他相似物种的形态特征,同时也对3物种的生境及分布进行了详细描述
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Institute of Hydrobiology, Chinese Academy Of Sciences
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Last time updated on 23/01/2021