ノリ網を用いたヒジキの天然採苗法および養殖への応用

抄録

This paper reports on a new method of natural seeding which make attach embryos released from the natural Sargassum fusiforme community to a nori culture net (as a seeding apparatus) set near a wild S. fusiforme bed. A natural seeding experiment was carried out in the Awata Fishing Port, Eastern Seto Inland Sea, Western Japan and total amount of 7,680 juveniles were obtained from a nori culture net of 4.8 m². The S. fusiforme was cultured in the sea off the port for 152 days, and conse- quently 1.2 kg (wet weight) of S. fusiforme per 1 m of the culture rope were  harvested. Application of nori culture nets is a practical method in natural seeding and raising seedlings of S. fusiforme due to its ease of handling, low cost and labor.