Mass-production of cod fry (Gadus morhua L.) in a large basin in western Norway - a new approach

Abstract

In February 1984, the fresh water in a small lake was replaced by seawater pumped from 40 m depth. Four-day old cod larvae were transferred on 11 and 26 April into this seawater basin, which was 5 m above sea level with a volume of 23 000 m3. The growth and survival of the two cod larva populations were monitored until late June, when the basin was drained and all surviving cod fry collected and transferred alive to the Aquaculture Station Austevoll. The diet of the cod larvae and fry was monitored, as were densities of zooplankton, water temperature, and oxygen saturation.