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紅藻アミクサの培養における生活史


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Title: 紅藻アミクサの培養における生活史
Other Titles: The Life History of Ceramium boydenii Gepp (Ceramiales, Rhodophyceae) in Culture
Authors: 右田, 清治
Authors (alternative): Migita, Seiji
Issue Date: Nov-1988
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.64, pp.11-15; 1988
Abstract: The life history of the red alga Ceramium boydenii collected from Ariake Bay, Kyushu, was studied in unialgal culture. Tetraspores obtained from field collected plants were globular and dark red in color and averaged 54 μm in diameter. The tetraspores gave rise to mature male and female gametophytes after one month in culture. The mature gametophytes were usually less than 2 cm in length. In addition, male plants were thinner and smaller than females. Carpospores from cystocarps of cultured female plants were morphologically similar to tetraspores. The carpospores germinated and grew into tetrasporophytes with short branchlets bearing tetrasporangia. These tetrasporophytes attained to a length of about 10 cm after 2 months. Thus, the life history pattern of C. boydenii was the Polysiphonia-type. However, gametophytes of this alga were smaller at maturity than tetrasporophytes. The chromosomes of this alga were observed at the late diakinesis of the first nuclear division in tetrasporangia, and were found to be about 26 as haploid number.
Keywords: Ceramium boydenii / Rhodophyceae / life history / culture / reproduction / chromosome number
URI: http://hdl.handle.net/10069/30247
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第64号

Citable URI : http://hdl.handle.net/10069/30247

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