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

表2 洛氏角毛藻复合群相似物种之间的形态学比较

Table 2 Morphological comparison among allied taxa within Chaetoceros lorenzianus complex

特征 Character 并基角毛藻 C. decipiens 优美角毛藻 C. elegans 平孢角毛藻 C. laevisporus 曼纳角毛藻 C. mannaii 稀树角毛藻 C. pauciramosus 密特拉角毛藻 C. mitra 洛氏角毛藻 C. lorenzianus type material 角毛孔纹形状 Seta poroid shape 椭圆形 Oval 水滴状 Drop-shaped 椭圆形 Oval 椭圆形 Oval 细长形 Elongated 圆形或椭圆形 Round or oval 圆形 Oval 角毛孔纹大小 Seta poroid size (μm) 0.3-0.6 (0.4 ± 0.1) 0.3-1.6 (0.7 ± 0.3) 0.3-0.9 (0.6 ± 0.1) 0.8-1.5 (1.1 ± 0.1) 0.1-0.6 (0.3 ± 0.1) 0.1-0.3 (0.2 ± 0.1) Nd Nd 角毛孔纹密度 Seta poroid number in 10 μm 14-25 (20.2 ± 3.6) 6-27 (18.7 ± 5.0) 11-17 (14.1 ± 1.9) 6-10 (7.9 ± 1.0) 18-44 (31.7 ± 5.4) 30-56 (39.8 ± 7.4) 5-9 (7.2 ± 1.7) Brunel 型 Brunel group I I I I I I I I I I II II I I 角毛基部并行融合Fusion of seta bases 有或无 Present/absent 无 Absent 无 Absent 无 Absent 短或无 Short/absent 无 Absent 有 Present 休眠孢子 Resting spore 未发现 Unknown 有二叉分支 Two branching processes 壳面平滑 Smooth 未发现 Unknown 有二叉分支 Two branching processes 有二叉分支 Two branching processes 有二叉分支? Two branching processes? 窗孔形状 Aperture shape 椭圆形 Oval 圆形或四边形 Rounded or quadrangular 椭圆形 Oval 六边形 Hexagonal 六边形或花生形 Hexagonal or peanut shaped 六边形或花生形Hexagonal or peanut shaped 圆形或六边形 Oval or hexagonal 角毛基部 Basal part of setae 无 Lacking 有且明显 Distinct 无 Lacking 短 Short 短 Short 无 Lacking 无 Lacking 壳面及壳套孔纹 Poroids on valve face and mantle 有 Yes 有 Yes 无 No 无 No 有 Yes 无 No nd nd