STUDIES OF MARINE PLANKTONIC DIATOMS .1. CYCLOTELLA NANA HUSTEDT, AND DETONULA CONFERVACEA (CLEVE) GRAN
STUDIES OF MARINE PLANKTONIC DIATOMS .1. CYCLOTELLA NANA HUSTEDT, AND DETONULA CONFERVACEA (CLEVE) GRAN
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DOI：
10.1139/m62-029
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发表时间：
1962-01-01
影响因子：
2.8
通讯作者：
RYTHER, JH
中科院分区：
文献类型：
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作者：
GUILLARD, RR;RYTHER, JH
无菌克隆的小型中心硅藻小环藻胡斯特分离，三个从河口的地方，一个从大陆架沃茨，一个从马尾藻海。从纳拉甘塞特湾分离到一株金黄色葡萄球菌。用光学显微镜和电子显微镜研究了所有克隆的形态学。不同无性系间的形态差异。娜娜目前不保证将任何一种作为不同的物种分开。克隆C. nana只需要维生素B12 ; D. Confervacea不需要维生素。河口无性系的生长。nana不受低至0.5%的盐度的影响，并随温度升高至25[degree] C而增加。在盐度高于8%和温度在10[degree]和20[degree]C之间时，货架克隆生长得更快。Sargasso Sea克隆不能在15 ℃或17.5%O以下存活，而D. Confervacea在15度以上的温度或8%以下的盐度下不能存活。克隆之间的生理差异大致对应于在自然界中获得的条件，其中每一个被收集。
Bacteria-free clones of the small centric diatom Cyclotella nana Hustedt were isolated, three from estuarine localities, one from Continental Shelf waters, and one from the Sargasso Sea. Detonula confervacea was isolated from Narragansett Bay. Morphology of all clones was studied with the light and electron microscopes. Morphological differences between clones of C. nana do not at present warrant separating any as distinct species. Clones of C. nana require only vitamin B12 ; D. confervacea has no vitamin requirement. Growth of the estuarine clones of C. nana was unaffected by salinity down to 0.5%o and increased with temperature to 25[degree] C. The Shelf clone grew more rapidly at salinities above 8%o and at temperatures between 10[degree] and 20[degree]C. The Sargasso Sea clone did not survive below 15''C or 17.5%O, while D. confervacea did not survive at temperatures above 15[degree] or at salinities below 8%o. The physiological differences between clones correspond roughly to the conditions obtaining in nature where each was collected.