Blar i Havforskningsinstituttet på emneord "feeding"
Viser treff 21-40 av 49
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Growth and mortality patterns evaluated from otolith microstructure in Atlantic cod Gadus morhua larvae reared on different feeding regimes in mesocosms
(Journal article; Peer reviewed, 2003-12-15)The objective of this work was to test the hypothesis that in a situation where predators are excluded growth and mortality rates of cod larvae should be independent. This was evaluated from distributions of otolith ... -
Harp seal (Phoca Groenlandica) invasions in north Norwegian coastal waters: A preliminary report on age composition and feeding habits
(ICES CM Documents;1990/N:6, Working paper, 1990)Since 1978 large numbers of harp seals (Phoca groenlandica) have invaded areas of North Norway in winter and spring. In 1987 and 1988 dramatic increases occurred both in magnitude and geographic extent of these seal ... -
Hydroacoustic detection of food waste - a method to estimate maximum food intake of fish populations in sea cages
(ICES CM Documents;1990/F:7, Working paper, 1990)A linear relationship between echo energy and amount of salmon dry food was established. Measurements were carried out both for food batches (5-400 gram) and single pellets. For a certain amount of food, the echo energy ... -
Illumination in first feeding tanks for marine fish larvae
(ICES CM Documents;1992/F:6, Working paper, 1992)Illumination levels were measured in three artificially illuminated tanks: a black tank, a white tank and a tank with black sides and white bottom, in order to test how well normal tank illumination in different tank ... -
Increased growth rate in Atlantic salmon parr by using a two-colour diet
(ICES CM Documents;1985/F:17, Working paper, 1985)Fishes hunting by sight are known to pay a cost of confusion when faced with high densities of uniform food particles. In such instances, awareness of other stimuli reduces feeding efficiency such that the fishes prefer ... -
The influence of light and food density on the feeding success in larvae of cod (Gadus morhua L.); field and laboratory observations
(ICES CM Documents;1976/F:34, Working paper, 1976) -
Initial feeding rates of Atlantic halibut larvae (Hippoglossus hippoglossus) at different prey densities
(ICES CM Documents;1990/F:44, Working paper, 1990)At the end of yolksac stage (36 days after hatching) halibut larvae were offered the prey organism Artemia salina at different densities ranging from 1 to 100.000 litre ^- 1. The feeding experiment was carried out in 11 ... -
Laksens vertikalvandring styrer fôrautomatene
(Havforskningsnytt, Working paper, 1991) -
Live and frozen freshwater zooplankton as alternative startfeeding diets for Atlantic salmon in trays
(ICES CM Documents;1985/F:15, Working paper, 1985)Six groups of Atlantic salmon (Salmo salar) fry were starfed with frozen Daphnia longispina, standard start food type EWOS or water with natural content of live zooplankton drained from the littoral zone in a coastal ... -
Lønner det seg å fore opp vasskrabbe?
(Havforskningsnytt, Working paper, 1993) -
Marin makro- og megafauna i Grenlandsfjordene, og næringsvalg til torsk, skrubbe, sjøørret og pelagisk fisk
(Fisken og havet, Research report, 2004)New site-specific information on occurrence and composition of macro- and megafauna, and trophic ecology of target species was required as basis for analyses of trophic transfer of contaminants in this heavily polluted ... -
Mye fôr gir liten torsk
(Havforskningsnytt, Working paper, 2001) -
Natural and cultivated zooplankton as food for halibut (Hippoglossus hippoglossus) larvae
(ICES CM Documents;1987/F:17, Working paper, 1987)Natural zooplankton were pumped into a collector and size-fractionated. The zooplankton smaller than 350 ym were fed on a diatom dominated algal suspension cultured in 3 m deep out-door plastic bags. Halibut larvae ... -
Pigmentation of salmonid - a comparison of astaxanthin and cantaxanthin as pigment sources for rainbow trout
(ICES CM Documents;1985/F:24, Working paper, 1985)Rainbow trout were fed a diet supplemented with astaxanthin and cantaxanthin. The ratios of astaxanthin to cantaxanthin were determined in plasma, faeces and flesh. During 65 days of feeding the flesh reached a level ... -
Preliminary data on feeding and condition of Barents Sea harp seals (Phoca Groenlandica) throughout the year
(ICES CM Documents;1992/N:5, Working paper, 1992)In order to evaluate the ecological role of the most abundant seal species in the Barents Sea, the harp seal Phoca groenlandica, field studies have been carried out in September 1990, in February, March/April, June and ... -
Preliminary feeding experiments with dry pelleted feed for cod fry
(ICES CM Documents;1983/F:25, Working paper, 1983) -
Progress Report of the Working Group on Marine Fish Culture
(ICES CM Documents;1999/F:3, Working paper, 1999) -
Report of the Multispecies Assessment Working Group [Woods Hole, 4- 13 December, 1990]
(ICES CM Documents;1991/Assess:7, Working paper, 1991) -
Report of the Working Group on Marine Fish Culture [St. Andrews, New Brunswick, Canada, 5- 7 June, 2000]
(ICES CM Documents;2000/F:4, Working paper, 2000) -
Selective breeding of marine fish : I. Automatized feeding of pelagic fish larvae under controlled environmental conditions
(ICES CM Documents;1971/E:29, Working paper, 1971)