长江口骨条藻属(Skeletonema)种类多样性及其形态(英文)

Morphological description of the Genus Skeletonema (Bacillariophyceae) in Yangtze River Estuary,China

利用光镜和扫描电镜(SEM)观察对长江口骨条藻属种类进行观察,共发现两种已有种:中肋骨条藻Skeletonema costatum(Greville)Cleve,玛氏骨条藻Skeletonema marinoi Sarno et Zingone.中肋骨条藻细胞直径为6.3～15.1μm,贯壳轴长度为7.7～11μm;玛氏骨条藻细胞直径为4.6～11.2μm,贯壳轴长度为11.7～12.2μm.中肋骨条藻在各个季节均有发现,玛氏骨条藻仅出现在春季.

We examined the morphology of Skeletonema species occurring in Yangtze River Esturary by the light microscopy(LM) and scanning electron microscopy(SEM).Two species,Skeletonema costatum(Greville) Cleve and Skeletonema marinoi Sarno et Zingone,were discriminated in the genus Skeletonema.Of S.costatum,cell diameters are 6.3-15.1 μm and pervalvar axes are 7.7-11 μm.In S.marinoi,cell diameters are 4.6-11.2 μm and pervalvar axes are 11.7-12.2 μm.S.costatum is widely distributed in all seasons,while S.marinoi is only occurred in spring.