Browsing Published in cooperation with others by Author "Jelmert, Anders"
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A biotest system for optimalization of environmental parameters for production of halibut fry
Mangor-Jensen, Anders; Jelmert, Anders; Naas, Kjell Emil; Harboe, Torstein; Skiftesvik, Anne Berit (ICES CM Documents;1987/F:21, Working paper, 1987)A system for controlled testing of different environmental parameters in seawater was made. Both the biotest system and an experimental setup using larvae of the Atlantic Halibut (Hippoglossus hippoglossus L.) are described. -
Antibacterial treatment procedures of eggs of halibut (Hippoglossus hippoglossus L.)
Bergh, Øivind; Jelmert, Anders (ICES CM Documents;1990/F:39, Working paper, 1990)Halibut eggs were surface disinfected with a iodophor one day before hatching, and mortality and larval development was recorded until the time of first feeding. The groups exposed to higher concentrations of disinfectant ... -
Antibiotic treatment and dose-response of bacterial activity associated with flatfish eggs
Mangor-Jensen, Anders; Jelmert, Anders (ICES CM Documents;1987/F:19, Working paper, 1987)Newly stripped and fertilized eggs from Plaice (Pleuronectes platessa) and Atlantic Halibut (Hipppoglossus hippoglossus) were incubated in 34 ppt sea water. 150 eggs (Plaice), 30 eggs (Halibut) or 20 glass beads were ... -
Bacterial diseases of eggs and yolk sac larvae of halibut (Hippoglossus hippoglossus L.): Characterization and experimental infection
Bergh, Øivind; Hansen, Geir Høvik; Jelmert, Anders (ICES CM Documents;1990/F:38, Working paper, 1990)Scanning electron micrographs of halibut eggs which were shown to have an epiflora dominated by a Flexibacter sp., revealed wounds colonized by large amounts of bacteria. The chorion was penetrated in most wounds, and ... -
Hatching of halibut (Hippoglossus hippoglossus L.) eggs under different light conditions
Rabben, Håvard; Jelmert, Anders (ICES CM Documents;1986/F:17, Working paper, 1986)Halibut eggs were hatched in total darkness and in illumination (60 lux light). A simoultanous hatching to a final hatching of 99%, and positive buoyant larvae in the dark hatching jars were experienced. In the illuminated ... -
Induced deformities on larvae of the Atlantic halibut (Hippoglossus hippoglossus L.). A new experimental approach.
Jelmert, Anders; Naas, Kjell Emil (ICES CM Documents;1990/F:45, Working paper, 1990)Introduction: The atlantic halibut is viewed as a promising species for cold water aquaculture, and have been subjected to extensive research efforts both in Norway and in U.K. the later years. As the biology, and ... -
Production experiment of halibut fry (Hippoglossus hippoglossus) in silos
Rabben, Håvard; Jelmert, Anders; Huse, Ingvar (ICES CM Documents;1987/F:42, Working paper, 1987)Silos with conical bottoms and a volume of approx 3.5 m3 are tested as storing units for halibut yolk-sac larvae. The silos were run in three different ways: A: Stagnant water with a saltplug till day 10 and later slow ... -
Production experiment of halibut fry in large enclosed water columns
Rabben, Håvard; Nilsen, T.O.; Huse, Ingvar; Jelmert, Anders (ICES CM Documents;1986/F:19, Working paper, 1986)Halibut eggs were hatched in 21 floating enclosures and the larvae stored through the yolk sac period under 5 different environmental conditions, each with 4 parallels. The effect of the different environments was ... -
The effect of ambient salinity on the buoyancy of eggs from the Atlantic halibut (Hippoglossus hippoglossus)
Mangor-Jensen, Anders; Jelmert, Anders (ICES CM Documents;1986/F:52, Working paper, 1986)The effect of ambient salinity on buoyancy and the formation of perivitelline fluid in eggs from the Atlantic halibut Hippoglossus hippoglossus have been investigated. The results clearly demonstrate that the water ... -
Upwelling incubators for eggs of the Atlantic halibut (Hippoglossus hippoglossus L.)
Jelmert, Anders; Rabben, Håvard (ICES CM Documents;1987/F:20, Working paper, 1987)Incubators with upwelling water for eggs of the Atlantic Halibut are described. Tending and fate of the eggs where monitored, with special emphasis on egg mortality and bacterial activity. Bacterial activity in ...