フトモズクの生活環

概要

論文の詳細を見る
Tinocladia crassa (SURINGAR) KYLIN is a useful edible alga in Japan. This experiment was conducted using materials collected from Nomozaki, Nagasaki Prefecture. The macroscopic sporophytes appear from March to June and bear unilocular sporangia from April to June. The zoospores of unilocular sporangia germinate into gametophytes. These gametophytes produce plurilocular gametangia which form gametes. The gametes fuse isogamously to form zygotes. The zygotes first give rise to thick branched creeping thalli and then change into erect assimilators, and finally develop into young Tinocladia plants. In the early developmental stage, the sporophytes also produce plurilocular zoosporangia which form neutral zoospores. These zoospores develop directly into Tinocladia plants. However, under unfavorable culture conditions, the germlings of zygote and neutral zoospore remain creeping thalli which function as plethysmothalli repeating several successive generations of such thalli. In summer, the gametophytes and the sporophytes cease further growth and enter a stage which is similar to a resting stage. In autumn, the former begin to grow and form gametes and the latter neutral zoospores, respectively. The gametes fuse isogamously to form zygotes. The zygotes and the neutral zoospores develop into young Tinocladia plants.
日本水産學會の論文