Morphological Characteristics of Four Species in the Genus Skeletonema in Coastal Waters of South Korea
Morphological Characteristics of Four Species in the Genus Skeletonema in Coastal Waters of South Korea
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DOI：
10.4490/algae.2009.24.4.195
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发表时间：
2009-12-01
期刊：
影响因子：
3.2
通讯作者：
Lee, Jin Hwan
中科院分区：
文献类型：
--
作者：
Jung, Seung Won;Yun, Suk Min;Lee, Jin Hwan
大多数的棘丝藻属的物种都被鉴定为S.肋骨为了评估形态学的物种多样性在属的螺旋藻，我们调查了9个地点在韩国沿海沃茨。通过光学显微镜和扫描电镜观察，发现该属植物的超微结构可区分为四种：S。dohrnii Sarno & Kooistra，S. marinoi Sarno & Zingone，S. subsalsum（Cleve）Bethge和S.热带峡谷In S. dohrnii，细胞直径为3-6 μ m，pervalvar轴为13-19 μ m。细胞中可见一个或两个部分叶绿体。S. marinoi为4-10 μ m，pervalvar轴为8-18 μ m。每个细胞含有一个叶绿体。S.含1-2个叶绿体的salsum的直径为8-13 μ m，pervalvar轴为11-20 μ m。S. tropicum为10-18 μ m，pervalvar轴为4-9 μ m。2-4在每个细胞中观察到叶绿体。黄鳍叉尾轮虫（S. fultoportula）的叶尖宽度; dohrnii和S. marioni是爆发和单位，但在S。subsalsum和S. Tropicum很窄。形态类群中，S. dohrnii和S. marinoi在所有季节的分布最广，而S. tropicum仅在夏季发生。
Most Skeletonema species have been identified under the name of S. costatum. To assess the morphological species diversity in the genus Skeletonema, we surveyed the nine localities in the coastal waters of South Korea. The light microscopy (LM) and scanning electron microscopy (SEM) observations in this study showed that ultrastructural features of genus Skeletonema discriminated among four species: S. dohrnii Sarno & Kooistra, S. marinoi Sarno & Zingone, S. subsalsum (Cleve) Bethge, and S. tropicum Cleve. In S. dohrnii, cell diameters were 3-6 mu m and the pervalvar axes were 13-19 mu m. One or two partial chloroplasts were visible in a cell. Cells of S. marinoi were 4-10 mu m and the pervalvar axes were 8-18 mu m. Each cell contained one chloroplast. Cells of S. subsalsum which contained 1-2 chloroplasts were 8-13 mu m and the pervalvar axes were 11-20 mu m. Cells of S. tropicum were 10-18 mu m and the pervalvar axes were 4-9 mu m. 2-4 chloroplasts were seen in each cell. Tip width of fultoportula in S. dohrnii and S. marioni was flared and flat, but that in S. subsalsum and S. tropicum was narrow. Morphological groups among them, S. dohrnii and S. marinoi were the most widely distributed in all seasons, while S. tropicum was only occurred in a summer season.