On the adhesive mechanism of epiphytic diatom attached to nori fronds.

概要

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The present study was undertaken to elucidate the adhesive mechanism of epiphytic diatom attached to noni fronds in both field and laboratory experiments. The following results were obtained; 1. The main diatoms attached to the fronds were Licmophora spp. Among the upper, the middle and the basal parts of the fronds, the diatoms adhered predominated in the upper one in the cultivation ground of Saigawa coastal area in Shimonoseki. 2. It was observed by using SEM that the existence of the ruggedness based on the cell diameters was recognized at the surface of the fronds and that especially the ruggedness at the upper parts was the most minute. 3. The cell numbers of diatom attached to the fronds increased when seawater was running in the laboratory conditions. 4. From the laboratory observations, the diatom was mostly attached to the upper parts of the fronds, and the cell numbers remarkably increased with the increase of the frond-length. 5. Therefore, the adhesion manners of diatom were found to be related to the surface structure, the frond-length and to be depended on the running of seawater.
日本水産増殖学会の論文