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Title: 緑藻アミアオサの生活史
Other Titles: The Life History of Ulva reticulata Forsskål (Chlorophyceae, Ulvales) in Culture
Authors: 右田, 清治 / 当真, 武
Authors (alternative): Migita, Seiji / Toma, Takeshi
Issue Date: Nov-1987
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.62, pp.9-15; 1987
Abstract: The life history of Ulva reticulata, collected from Okinawa Island, southern Japan, was studied in laboratory culture. The gametes and zoospores were formed on the thalli from Okinawa. The zoospores are pyriform, with four flagella, one eye-spot and showing positive phototaxis. They began to germinate and developed into male and female gametophytes. The gametes are elongated pyriform, with two flagella, one eye-spot and showing strong positive phototaxis. The gametes from different sex conjugated anisogamously. The zygotes immediately germinated and developed into sporophyets forming zoospores. Both male and female gametes also germinated parthenogenetically and then grew up to male and female plants respectively. The chromsome number of this plant was nine in gametophytes, and eighteen in sporophytes. From the above results, Ulva reticulata is a diplo-haplont having the alternation of isomorphic generations.
Keywords: Ulva reticulata / Chlorophyceae / life history / chromosome number
URI: http://hdl.handle.net/10069/30287
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第62号

Citable URI : http://hdl.handle.net/10069/30287

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