カキ種苗における餌料用微細藻類の高効率大量生産

概要

論文の詳細を見る
The total annual production of Japans fisheries fell to 6,130,000 t from 12,780,000 t during the years 1988 to 2001, because the annual production by coastal fisheries reduced by about half during the seven years from the year 1989. Therefore resource management of coastal fisheries, which require the sustainable reproduction of marine animals, is desired, and a high efficiency technology has to be developed for the production of microalgae as food for the seedlings of marine animals. The mass production of micro algae as food is greatly dominated by the photosynthetic activity of algae and the lighting conditions, within culture solution used. Hence a mass production system of microalgae using artificial lighting was developed. To save electrical consumption by lamps, the photosynthetic photon flux density (PPFD) within the culture solution was increased by increasing the cell concentration of the solution. For the cultivation of oyster seedlings, we designed the Akkeshi-Cho Oyster Seedlings Research Center. In the Research Center, 12 million oyster seedlings per year were able to be cultivated by means of a mass production system which produced micro algae of 4 t solution (8.6×106 cells ml-1) per day, in 32 culture-solution tanks (one tank volume: 500 l) each.
生態工学会の論文
2005-01-31