Browsing Brage IMR by Author "Skjolddal, Lillian"
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A comparison of growth rate of halibut larvae (Hippoglossus hippoglossus L.) fed wild zooplankton and enriched Artemia
Skjolddal, Lillian; Harboe, Torstein; Næss, Tore Håkon; Naas, Kjell Emil; Rabben, Håvard (ICES CM Documents;1990/F:60, Working paper, 1990)Halibut larvae at an age of 267 day degrees post hatching, were reared through first feeding, outdoors in 100 l plastic bags. There were three feeding regimes: wild zooplankton, Artemia enriched on the algae Isochrysis ... -
A pilot study of halibut larvae (Hippoglossus hippoglossus L.) reared from start feeding to metamorphosis on diets of wild zooplankton and Artemia
Boxaspen, Karin; Harboe, Torstein; Skjolddal, Lillian (ICES CM Documents;1990/F:52, Working paper, 1990)Halibut larvae ready to start feed were placed in two outdoor tanks of 7 m^3. The larvae in one tank were fed wild zooplankton throughout the whole period, and the larvae in the other tank were fed wild zooplankton from ... -
Age of Atlantic halibut larvae (Hippoglossus hippoglossus L.) at first feeding
Harboe, Torstein; Næss, Tore Håkon; Naas, Kjell Emil; Rabben, Håvard; Skjolddal, Lillian (ICES CM Documents;1990/F:53, Working paper, 1990)Halibut larvae at different age (150 to 315 day-degrees) were transferred to outdoor startfeeding tanks each with two internal plastic bags (100 litre). The larvae were fed wild zooplankton. One bag was sampled after 24 ... -
Effects of light on the development, activity and mortality of halibut (Hippoglossus hippoglossus L.) yolk sac larvae
Skiftesvik, Anne Berit; Opstad, Ingegjerd; Bergh, Øivind; Pittman, Karin; Skjolddal, Lillian (ICES CM Documents;1990/F:43, Working paper, 1990)Halibut yolk sac larvae were kept at different light intensities from Day 1 posthatch. Measurements of activity and swimming speed showed that larvae that were kept in darkness were more active, but had lower swimming ... -
Green water in larviculture - An experiment with natural phytoplankton in tanks for first feeding of halibut larvae (Hippoglossus hippoglossus L.)
Næss, Tore Håkon; Bergh, Øivind; Harboe, Torstein; Naas, Kjell Emil; Rabben, Håvard; Skjolddal, Lillian (ICES CM Documents;1990/F:61, Working paper, 1990)At 232 day degrees, halibut larvae were transferred from indoor tanks to 1.7 m^3 outdoor tanks for first feeding. The number in each tank was approximately 750. Three tanks were continuously given algal suspension ("green ... -
Preliminary report on the effects of temperature on the development of eggs and larvae of halibut (Hippoglossus hippoglossus) and on the bacterial population in the incubators
Bergh, Øivind; Opstad, Ingegjerd; Pittman, Karin; Skiftesvik, Anne Berit; Skjolddal, Lillian; Strand, Hans Kristian; Vanthuyne, Virginie (ICES CM Documents;1989/F:19, Working paper, 1989)Eggs were stripped from one female of the halibut broodstock at Austevoll Aquaculture Station, and fertilised with sperm from two males immediately before incubation. Eggs were held in nine open-circulation 250 l incubators ...