青森県沿岸における養殖マコンブ種苗の沖出し時期

概要

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Research was carried out to discover the most suitable time for outplanting seedlings of Lam-inaria japonica for cultivation in three coastal areas of Aomori Prefecture, Japan. The seedlings were outplanted in the sea each month from July to December 1989 at Sameura on the Pacific coast, at Okunai on the Mutsu Bay coast, and at Kodomari on the Japan Sea coast. Similar results were obtained in the three areas. The seedlings outplanted in July survived for about a month, but were dead by September. The seedlings outplanted in August to October did not survive until the following month. The seedlings outplanted in November and December survived and continued to grow until the end of experimental period (April 1990). These results indicate that the suitable time for outplanting seedlings of Laminaria japonica is from the period when seawater temperature is lower than 16°C off the coast of Aomori Prefecture.
日本水産學會の論文