Taxonomy, phylogeny, biogeography, and ecology of Sabulodinium undulatum (Dinophyceae), including an emended description of the species
Taxonomy, phylogeny, biogeography, and ecology of Sabulodinium undulatum (Dinophyceae), including an emended description of the species
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DOI：
10.1111/j.1440-1835.2007.00459.x
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发表时间：
2007-06
影响因子：
1.5
通讯作者：
M. Hoppenrath;T. Horiguchi;Y. Miyoshi;M. Selina;“Max” F. J. R. Taylor;B. Leander
中科院分区：
文献类型：
--
作者：
M. Hoppenrath;T. Horiguchi;Y. Miyoshi;M. Selina;“Max” F. J. R. Taylor;B. Leander
从德国、俄罗斯、日本和加拿大采集了单种属的模式种波纹沙甲藻（SabulodiniumundulatumSaundersetDodge）的样品，并对其进行了鉴定。本种有一个侧面扁平，椭圆形的细胞，顶端截短，背侧有一个小的附加体。下囊体的背侧边缘呈波浪状。有时会出现背棘和/或对尖棘。该种的标本长27.5-42.5 μ m，宽18.5-36.0 μ m，囊壁为板状排列的顶孔复合体（APC）5 ′ 1a 6 ″ 5c 4s 6 ″ ″ 1 ″ ″。背膜的形状是可变的。物种分布似乎仅限于北方温带地区。sabulodinium undulatum发生在所有桑迪eulittoral地区全年，也存在于桑迪sublittoral和supralittoral（海滩）样品。该物种可以耐受广泛的温度和盐度。Sabulodinium在− 2.0至+24.3 °C和4 - 35盐度下发生。很可能观察到的形态和生境的变化反映了几个品种。我们建议在该物种内建立三个变种，即S。波状变种undulatum，S.波状变种glabromarginatum和S.波状变种单棘的。Sabulodinium的系统位置进行了讨论的背景下比较形态和分子系统发育数据。
Samples of Sabulodinium undulatum Saunders et Dodge, the type species of the monospecific genus, were collected and characterized from Germany, Russia, Japan and Canada. This species has a laterally flattened, oval cell with a truncated apex and a dorsally pointing small episome. The dorsal margin of the hyposome has an undulating shape. A dorsal spine and/or antapical spine are sometimes present. The specimens of this heterotrophic species are 27.5–42.5 μm long and 18.5–36.0 μm wide, and have a theca with the plate arrangement apical pore complex (APC) 5′ 1a 6″ 5c 4s 6′′′ 1′′′′. The shape of the dorsal theca is variable. The species distribution seems to be restricted to northern temperate regions. Sabulodinium undulatum occurred in all sandy eulittoral areas throughout the year and was also present in sandy sublittoral and supralittoral (beach) samples. The species can tolerate a broad range of temperatures and salinities. Sabulodinium occurred from −2.0 to +24.3°C and 4–35 salinity. It is likely that the observed variability in morphology and habitat reflect several varieties. We propose to establish three varieties within the species, namely S. undulatum var. undulatum, S. undulatum var. glabromarginatum, and S. undulatum var. monospinum. The systematic position of Sabulodinium is discussed in the context of comparative morphological and molecular phylogenetic data.