T. Harboe, A. Mangor-Jensen, K.E. Naas, T. Naess-1998
Aquaculture Research, 29 (12) : 919-923 (from Current Contents)
Abstract:
An intensive method of juvenile Atlantic halibut, Hippoglossus hippoglossus (L.), production has been under development over the last decade because of the problems associated with the extensive method. The lack of initiation of feeding behaviour has been the main obstacle for successful indoor rearing under artificial light and feeding conditions. In the present paper, an intensive method for the first feeding of halibut larvae is described and verified by practical feeding trials. The method involves circular 1.5-m^3 indoor tanks with a peripheral ring-shaped cover, the use of continuous light, UV-A radiation during the first 24 h, central up-welling of water made by aeration and the use of microalgae in the rearing water. The single most important factor in such systems is to maintain a current pattern which allows the larvae to orientate and position themselves to face the water current for easy capture of prey.
(Inst Marine Res, Austevoll Aquaculture Res Stn, N-5392 Storebo, Norway, e-mail: torstein.harboe@imr.no)