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 181-200 of 202
-
Saithe tagging experiments in northern Norway north of 68°N, 1970 - 74.
(ICES CM Documents;1978/G:34, Working paper, 1978)From 1970 to 1974, 7913 saithe were tagged and released along the coast of northern Norway from north of 68 N and eastwards nearly to the border between Norway and the USSR. -
Saithe tagging experiments on the Norwegian coast between 62°N AND 67°N, 1971 - 74.
(ICES CM Documents;1978/G:33, Working paper, 1978)From 1971 to 1974, 5222 saithe were tagged and released on the Norwegian coast between 62°N and 67°N. Previously, Sund (1925) had tagged 1000 saithe in summer 1921 at about 67°N. Both northward and southward migration was ... -
Saithe tagging experiments on the Norwegian west coast south of 62°N, 1972 - 74.
(ICES CM Documents;1978/G:32, Working paper, 1978)From 1972 to 1974, 6291 saithe were tagged and released on the Norwegian west coast between 59 N and 62 N. Before 1972, only 40 saithe have been tagged in the area, in 1956 and 1959, and these experiments were not extensive ... -
Screening for genetic markers to assess potential genetic impact from salmon ranching on wild stocks
(ICES CM Documents;1991/M:14, Working paper, 1991)Genetic markers are needed to assess the potential genetic impact on wild salmon populations from ocean ranching. In 1990 spawners from four Norwegian rivers: Lone, Vosso, Dale and Onarheim were screened for genetic ... -
Seawater adaptability of two strains of arctic char (Salvelinus alpinus) reared under different light regimes
(ICES CM Documents;1987/F:37, Working paper, 1987)Groups of Arctic char (Salvelinus alpinus) were reared under three experimental light regimes. Two different strains of char were used, one non-migratory from south Norway, the other anadromous from northern Norway. All ... -
Some comments to the problem of adjusting TACs to mesh size changes.
(ICES CM Documents;1979/G:56, Working paper, 1979)Mesh assessments are usually carried out by calculating "short term losses" and "long term gains" expected from a change in the minimum legal mesh size, assuming no change in total fishing effort or its distribution by ... -
Some preliminary observations on catfish (Anarchicas lupus L. and A. minor Olafsen) in captivity
(ICES CM documents;1987/F:32, Working paper, 1987)Newly hatched catfish larvae have been start fed on commercial dry pellets with a survival rate of 60 % in the best group during the first 100 days after hatching. The specific growth rate has varied between 2.17 and 3.52 ... -
The spurdogs in the North Sea area in the Norwegian fishery and observations on changes in migration pattern.
(ICES CM Documents;1980/H:60, Working paper, 1980)The Norwegian fishery of spurdog (Squalus acanthias L.), which started in 1930, has played a dominant part in the fishery for this species in Europe. During 1963-1968 a change occured in the behaviour of the spurdog ... -
Squid, Todarodes sagittatus (Lamarck) in Norwegian coastal waters during the autumn 1977 and spring 1978.
(ICES CM Documents;1978/K:16, Working paper, 1978) -
The status of pink salmon in North Norway.
(ICES CM Documents;1980/M:16, Working paper, 1980) -
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 ... -
Studies on haemoglobin genotypes in turbot and their relation with growth
(ICES CM Documents;1994/F:16, Working paper, 1994)Turbot, Scophthalmus maximus, were kept in tanks and weighed every month for about two years. Haemoglobins of 90 untagged and 52 individually Pit tagged fish were analysed by agar gel electrophoresis. A polymorphic system ... -
Succesfully early weaning of Atlantic halibut (Hippoglossus hippoglossus L.) in small shallow raceway systems
(ICES CM documents, Working paper, 1998) -
Surface activity of Atlantic salmon (Salmo salar) in net pens
(ICES CM Documents;1988/F:19, Working paper, 1988)An important feature of the behaviour of salmon is the leaping and rolling activity. These surface activities were studied in fish in net pens in relation to environmental factors and operational procedures. Data were ... -
Temperature effect on mortality and growth of lobster (Homarus gammarus) in its first year of life
(ICES CM Documents;1975/K:46, Working paper, 1975) -
The effect of a short time exposure to different temperature and salinity regimes on survival of maturing Atlantic salmon and eyed eggs, and changes in blood and seminal plasma during the spawning period
(ICES CM Documents;1986/F:25, Working paper, 1986)Maturing Atlantic salmon, transferred from brackish water two weeks prespawning, were held under four different temperature and salinity regimes through their spawning period. Values of blood glucose and haematocrit ... -
The effect of shading in pen rearing of Atlantic salmon (Salmo salar)
(ICES CM Documents;1988/F:18, Working paper, 1988)A full scale pen rearing experiment with covers to reduce illumination was carried out. No significant effects were observed on growth, mortality, ectoparasite infection, maturation or net pen fouling. -
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 ... -
Vaccination against Vibrio salmoncida results from three laboratory trials
(ICES CM Documents;1987/F:24, Working paper, 1987)Atlantic salmon smolts (Salmo salar) were vaccinated with a bacterin made from formalin-killed Vibrio salmonicida. In laboratory trials, fish vaccinated once showed little or no protection after challenge. Fish vaccinated ... -
Variation in growth rate and age at sexual maturity in Atlantic salmon
(ICES CM Documents;1976/E:40, Working paper, 1976)