Browsing Brage IMR by Subject "salmonids"
Now showing items 1-17 of 17
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A method of observing the spawning behaviour of farmed and wild salmonids in a natural stream habitat
(ICES CM Documents;1993/M:21, Working paper, 1993)When farmed fish escape from farms, they may compete with wild individuals for a number of resources, such as food, spawning sites, and mates. As a part of a larger study on genetic impact from farmed fish on wild ... -
Aggresive behavior of two size classes of four salmonid species
(Fisken og havet, Research report, 1995)Groups of eight parr of hatchery reared Atlantic salmon (Salmo salar), sea trout (Salmo trutta), rainbow trout (Oncorhynchus mykiss) and Arctic charr (Salvelinus alpinus) were investigated in monoculture with two size ... -
Aggressive behaviour of four salmonid species in duoculture
(Fisken og havet, Research report, 1995)Aggressive behaviour of groups of eight parr in different species combinations was studied to investigate the potential of duoculture in rearing of salmonids. The species used were Atlantic salmon (Salmo salar L.), sea ... -
Aluminium accumulation on eggs and hatching system during the incubation period - an important cause of variable hatching success ?
(ICES CM Documents;1984/F:27, Working paper, 1984)Groups of rainbow trout eggs were incubated in duplicate in trays with PVC screens and original aluminium screens. During incubation aluminium bound to sediments was deposited on eggs and hatching systems. By adding ... -
An assessment of the spatial scale of local adaptation in brown trout (Salmo trutta L.): footprints of selection at microsatellite DNA loci
(Journal article; Peer reviewed, 2011-01-12)Local adaptation is considered a paradigm in studies of salmonid fish populations. Yet, little is known about the geographical scale of local adaptation. Is adaptive divergence primarily evident at the scale of regions or ... -
An assessment of the spatial scale of local adaptation in brown trout (Salmo trutta L.): footprints of selection at microsatellite DNA loci
(Journal article; Peer reviewed, 2011-01-12)Local adaptation is considered a paradigm in studies of salmonid fish populations. Yet, little is known about the geographical scale of local adaptation. Is adaptive divergence primarily evident at the scale of regions or ... -
Artificial hatching substrate in the mass rearing of larval Atlantic salmon (Salmo salar)
(ICES CM Documents;1984/F:30, Working paper, 1984)Eggs from individual Atlantic salmon (Salmo salar) were hatched in a Californian hatching system with and without an astro-turf artificial substrate and growth during the first 200 days following hatching was ... -
Health monitoring of wild anadromous salmonids in seawater in Norway
(Rapport fra Havforskningen;Nr. 17-2014, Working paper, 2014-05-01) -
Preliminary results from stocking salmonid freshwater enclosures with flounder (Platichthys flesus)
(ICES CM Documents;1984/F:2, Working paper, 1984)Stocking of flounder in salmonid freshwater culture are suggested as a possible way of reducing loadings of surplus food to surrounding environment Flounder of different sizes were transferred from an estuary to Atlantic ... -
Risk Assessment of Catch and Release
(Research report, 2010-03-17) -
Risk Assessment of Catch and Release
(Research report, 2010-03-17) -
Start feeding of salmonids with lake zooplankton
(ICES CM Documents;1982/F:36, Working paper, 1982)Fry and small fingerlings of Atlantic salmon (Salmo salar) and rainbow trout (Salmo gairdneri) were fed with lake zooplankton in small fine-meshed cages. The zooplankton were pumped into cages. Growth rates and food selection ... -
Stillehavslaks på norskekysten
(Fisken og havet;1961 - Nr. 5, Journal article, 1961) -
Studies on environmental conditions and influence on salmon farm production
(ICES CM Documents;1990/F:35, Working paper, 1990)The study was undertaken to investigate how environmental conditions influence growth of Atlantic salmon, and how different sub groups of salmon respond to different environment. The fish were raised at five different ... -
The activity of alevins of Atlantic salmon and rainbow trout, incubated on different substrates
(ICES CM Documents;1986/F:24, Working paper, 1986)Atlantic salmon (Salmo salar) and rainbow trout (S. gairdneri) eggs were incubated in plexi-glass aquariums. After hatching, alevins were kept in darkness, two groups of each species without substrate, two groups in ... -
The effect of different photoperiods on growth and smoltification in Atlantic salmon (Salmo salar)
(ICES CM Documents;1985/F:32, Working paper, 1985)Photoperiod has been implicated as an effective mediator of growth and smelting in Atlantic salmon (Salmo salar). To investigate this 0+ parr of Atlantic salmon were treated with three different photoperiods: 24Light:0Dark; ... -
The timing of emergence of Atlantic salmon and rainbow trout, incubated on different substrates
(ICES CM Documents;1986/F:26, Working paper, 1986)Atlantic salmon (Salmo salar) and rainbow trout (S. gairdneri) eggs were incubated in plexi-glass aquariums. After hatching, alevins were kept in darkness, two groups of each species without substrate, two groups in ...