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淡水産紅藻オキチモズクの室内培養


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Title: 淡水産紅藻オキチモズクの室内培養
Other Titles: Culture Studies of Freshwater Alga Nemalionopsis tortuosa (Rhodophyta, Nemalionales)
Authors: 右田, 清治
Authors (alternative): Migita, Seiji
Issue Date: Mar-1986
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.59, pp.23-28; 1986
Abstract: The freshwater red alga Nemalionopsis tortuosa YONEDA et YAGI is only one species of the genus Nemalionopsis and has been recorded from a few places in Japan. In the present paper, I report on completion of the life history of Nemalionopsis tortuosa in laboratory cultures. Monosporangia, subspherical in shape and measuring 15~20pm long and 8~11μm wide, are formed on the terminal cells of assimilating branches. The sporangia were abundantly found in spring in nature. Monospores released from adult fronds were about 12μm in diameter and germinated immediately by pushing out germ tubes. They developed into prostrate filamentous thalli. These cells were often bent and densely crowded, and some parts of the thalli seemed to be pseudo-discs. These prostrate thalli produced many erect branches and grew into closely branched tufts; the so-called Chantransia-stage. After successive branching, one of the branches of the prostrate became a growing apex to develop into an erect frond. The erect fronds finnally grew up to 18cm in length and formed monosporangia. In the culture experiments at various temperatures, monosporangia were abundantly formed at the warm temperatures such as 20° and 25℃.
URI: http://hdl.handle.net/10069/30338
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第59号

Citable URI : http://hdl.handle.net/10069/30338

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