中国沿海洛氏角毛藻复合群的多样性组成及地理分布

陈作艺,许晓静,朱素英,翟梦怡,李扬

Species diversity and geographical distribution of the Chaetoceros lorenzianus complex along the coast of China

Chen Zuoyi,Xu Xiaojing,Zhu Suying,Zhai Mengyi,Li Yang

图4 平孢角毛藻的光学显微镜(LM) (A-B)、扫描电镜(SEM) (C-E, I-J)和透射电镜(TEM) (F-H)示意图。A: 链状群体; B: 休眠孢子位于母细胞链中; C: 链中壳面, 示硅质翼(宽箭型), 硅质脊(箭头)及壳套基部凹槽(窄箭型); D: 释放的成熟休眠孢子; E: 链端壳面, 示唇形突(箭头)及硅质肋纹(箭型); F: 壳套; G: 链中壳面, 示中央环纹(箭型); H: 环带; I, J: 角毛结构。标尺 = 50 μm (A), 20 μm (B), 4 μm (C, E), 2 μm (D, F, G, H, I, J)。

Fig. 4 Morphology of Chaetoceros laevisporus under light microscopy (LM) (A-B), scanning electron microscopy (SEM) (C-E, I-J) and transmission electron microscopy (TEM) (F-H). A, Chain in broad girdle view; B, Resting spores within the mother cells of a chain; C, Sibling intercalary valves showing overlapping silica wings (broad arrow), silica ridges (arrowhead) and furrow above the basal ring of mantle (arrow); D, A released resting spore; E, Terminal valve with central processes (arrowhead) and silica rib (arrows); F, Mantle; G, Intercalary valve with central annulus (arrow); H, Girdle bands; I and J, Setae structure. Scale bars, 50 μm (A), 20 μm (B), 4 μm (C, E), 2 μm (D, F, G, H, I, J).