Browsing ICES CM documents authored by IMR scientists (1949-2011) by Subject "VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922"
Now showing items 21-40 of 202
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Coastal releases of Atlantic salmon, a new model for salmon ranching in Norway
(ICES CM Documents;1991/M:38, Working paper, 1991)The present project is launched within the frame of a 7 year government funded programme to establish an additional livelihood for the coastal regions. The aim of the study is, through controlled experiments, to find ... -
Comparative growth studies, II
(ICES CM Documents;1976/E:36, Working paper, 1976)Atlantic salmon smolts of Norwegian and Swedish (Baltic) origin and rainbow trout fingerlings were stocked in floating pens at several farms along the Norwegian coast. The fish were counted, measured and weighed with approx. ... -
Cultivation of mussels (Mytilus edulis) by use of net bags
(ICES CM Documents;1970/E:12, Working paper, 1970) -
Distribution and abundance of sprat in the North Sea in winter 1979-1980 determined by acoustic methods.
(ICES CM Documents;1980/H:41, Working paper, 1980)To estimate the size of the North Sea sprat stock acoustically two cruises were carried out in November 1979-January 1980. The method is described and the size of the sprat stock was estimated to about 1 million tons. ... -
Effects of light on the development, activity and mortality of halibut (Hippoglossus hippoglossus L.) yolk sac larvae
(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 ... -
Effects of organic waste from marine fish farms on the seabottom beneath the cages
(ICES CM Documents;1990/F:34, Working paper, 1990)Seven fish farms and a control station were investigated four times during one year. The farms represented a gradient of increasing accumulation of organic waste on the sea bottom. The thickness and the organic content ... -
Effects of pre-release acclimatization period on salmon return rates
(ICES CM Documents;1995/M:13, Working paper, 1995)42.000 1+smolts of Atlantic salmon were size graded into two size groups and released during three weeks in spring 1993; one group of small and one of large smolts on each of the four release days. Approximately 25% of ... -
Effects on salmon (Salmo salar) from different operational procedures in fish farming
(ICES CM Documents;1988/F:16, Working paper, 1988)The effects on farmed salmon caused by operational procedures as handling, de-lousing, removal of dead fish, grading and transfer were studied by underwater TV-observations, ultrasonic telemetry of heart rate and analyses ... -
Endocrine and nutritional factors affecting the first food uptake by cod larvae
(ICES CM Documents;1982/F:17, Working paper, 1982) -
Enhancement of mussel culture by artificial upwelling of nutrient-rich deep water in fjords
(ICES CM documents, Working paper, 2004) -
Estimates of capelin trawl efficiency by comparing the available fish with the actual catch.
(ICES CM Documents;1979/B:23, Working paper, 1979)Swept volume trawl efficiency for two different trawls were determined to be 28 and 60%, respectively by comparing the volume densities of capelin determined by echointegrator, with catch size and swept volume of the ... -
Evaluation of genetic impact of aquaculture activities on native populations
(ICES CM documents;2007/L:06, Working paper, 2007)During the past 10 years, worldwide production of farmed fish has more than doubled, with farming activities now producing half of the fish directly consumed by humans. The potential genetic effects of aquaculture on natural ... -
Experiments with cultivation of mussels in Norway
(ICES CM Documents;1968/K:19, Working paper, 1968) -
Experiments with selective breeding of Atlantic salmon
(ICES CM Documents;1975/M:22, Working paper, 1975) -
Factors affecting the parr-smolt transformation in Atlantic salmon
(ICES CM Documents;1979/M:2, Working paper, 1979)Factors affecting the parr-smolt transformation in Atlantic salmon (Salmo salar) are reviewed. The factors discussed are growth rate, temperature, photoperiod, salinity, food quality and quantity and hormones. Significance ... -
Field and laboratory studies of herring larvae (Clupea harengus L.)
(ICES CM Documents;1979/H:28, Working paper, 1979)The present study deals with herring larvae from a local herring stock in Lindåspollene, north of Bergen. Growth and survival experiments of herring larvae in relation to density and type of prey organisms have been ... -
Final report on the ICES-coordinated accoustic survey of herring stocks in 1979 : Aberdeen, U.K., 22 - 24 January 1980.
(ICES CM Documents;1980/H:3, Working paper, 1980) -
First report of the planning group for the symposium on fisheries acoustics.
(ICES CM Documents;1980/B:10, Working paper, 1980) -
Fish beahaviour studies as an aid to cod and haddock longline hook design.
(ICES CM Documents;1979/B:22, Working paper, 1979)The evolution of the fishing hook to the present form has been very gradual, and only slight alterations have been made since metals became available as material for hooks. This may indicate that the form is close to ... -
Geographic information systems (GIS) as tools for better integrated coastal zone planning and management (ICZP/M)
(ICES CM Documents;2000/O:3, Working paper, 2000)Geographic information systems (GIS) has practical applications in many areas, one of them being integrated coastal zone planning and management (ICZP/M). GIS can help combine several types of data from different sectors ...