Blar i ICES CM documents authored by IMR scientists (1949-2011) på emneord "growth"
Viser treff 21-40 av 67
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Growth of Polar cod (Boreogadus saida) in the Barents Sea
(ICES CM Documents;1990/G:47, Working paper, 1990)Observed length-at-age, and backcalculated lengths based on otolith measurements, from samples of polar cod collected in the Barents Sea in autumn of 1987 to 1989, were analysed. An increase in individual length growth ... -
Growth of scallop juveniles (Pecten maximus L.) in an enriched shallow seawater basin
(ICES CM Documents;1990/K:23, Working paper, 1990)The aim of this work was to see if a shallow, enriched seawater basin was a suitable location for scallop culture. Growth of great scallop juveniles (Pecten maximus L.) was compared with two open sea locations, and the ... -
Growth of the Barents Sea capelin (Mallotus villosus) in relation to climate
(ICES CM Documents;1986/H:64, Working paper, 1986)The history of capelin assessment in the Barents Sea has shown that the growth of individual capelin has varied between years and different parts of the capelin distribution area. As the number of individuals in this ... -
Growth of the Barents Sea capelin compared to stock size and geographical distribution
(ICES CM Documents;1986/H:38, Working paper, 1986)The growth of individual capelin in the Barents Sea stock was analysed in relation to the geographical distribution and size of the stock in the feeding season, and the density of fish in the feeding area. The growth ... -
Growth of the Barents Sea capelin of the year-classes 1967-70
(ICES CM Documents;1977/H:39, Working paper, 1977)Otoliths of the 1967-70 year-classes of the Barents Sea capelin have been analyzed. For otoliths with radius < 0,74 mm there was a close, linear relation between fish length and otolith radia. For larger otoliths the ... -
Growth patterns in otoliths as an indication of daily growth variations of larval herring (Clupea harengus) from an experimental ecosystem
(ICES CM Documents;1981/H:31, Working paper, 1981)Larval herring were released in a large outdoor basin four days after hatching and the mean growth in length and weight of the herring larvae and fry was monitored for 100 days. The food supply was estimated from weekly ... -
Growth patterns in the North Sea and western mackerel in Norwegian catches 1960- 85
(ICES CM Documents;1989/H:21, Working paper, 1989)Length, weight and age in random samples from Norwegian catches of' mackerel from 1960 to 1985 have been reviewed. A standard growth curve was constructed by applying a modified von Bertalanffy equation to all data. The ... -
Growth rates in cultured common wolffish (Anarhicahas lupus) and spotted wolffish (A. minor)
(ICES CM Documents;1990/F:2, Working paper, 1990)Field caught common wolffish (Anarhichas lupus) and spotted wolffish (A. minor) have been raised from fry on dry pellets. The two species have experienced annual fluctuations in temperature between 6 and 12 °C and the ... -
Growth, recruitment and mortality of Pandalus borealis (Krøyer), in Balsefjord, Northern Norway
(ICES CM Documents;1976/K:31, Working paper, 1976)A population study of the deep sea prawn started in autumn 1975. Eight months were sampled until July 1976. The von Bertalanffy growth parameters were estimated from mean carapace length of certain year classes, excluding ... -
Halibut behaviour as a means of assessing suitability of ongrowth systems
(ICES CM Documents;1998/L:4, Working paper, 1998)Halibut behaviour in net pens has been studied using direct observation, underwater video and/or hydroacoustic equipment. Rearing experience includes a wide range of fish weights (50-10.000 g) and fish densities (4-150 ... -
Implications of fisheries-induced evolution for stock rebuilding and recovery
(ICES CM documents;2010/M:29, Working paper, 2010)Fishing-induced evolution has the potential to change life-history and other characters of exploited stocks. Here we study the rebuilding and recovery of an exploited stock with en individual-based eco-genetic model ... -
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 ... -
Individual growth rate and age at first sexual maturity in atlantic salmon
(ICES CM Documents;1977/E:60, Working paper, 1977) -
Intraspecific variations in size, bouyancy and growth of eggs and early larvae of arcto-norwegian cod, Gadus morhua L., due to parental and environmental effects
(ICES CM Documents;1970/F:28, Working paper, 1970) -
Length structure of deep-pelagic fishes sheds new light to their life histories
(ICES CM documents;2008/C:14, Working paper, 2008)Here we use a new technique to study life history variation in deep-pelagic fishes from a midocean ridge system. Shape of length distribution in a population is to a significant extent determined by the degree to which ... -
Mass-production of cod fry (Gadus morhua L.) in a large basin in western Norway - a new approach
(ICES CM Documents;1984/F:16, Working paper, 1984)In February 1984, the fresh water in a small lake was replaced by seawater pumped from 40 m depth. Four-day old cod larvae were transferred on 11 and 26 April into this seawater basin, which was 5 m above sea level with ... -
Measurements of condition and growth of cod larvae reared in mesocosms: individual variability as a function of environmental condition or genetic inheritance
(ICES CM Documents;2001/V:8, Working paper, 2001)Size, dry weight and RNA/DNA measurements of 3876 cod larvae from 26 different families of recruit and repeat spawners reared in two mesocosms ( 2500m³ and 4400m³) under natural conditions were analysed. To be able to ... -
Pilot scale studies of intensive cod farming in Norway
(ICES CM Documents;1985/F:22, Working paper, 1985)Cod fry produced in a seawater pond at Austevoll, Norway were used in a farming experiment. Cod larvae were start fed on the natural plankton in the pond. Additional feeding with dry pellet started when the fry were 60 ... -
Primary growth rings in Blue Whiting otoliths
(ICES CM documents;1979/H:32, Working paper, 1979)To approach the problem of ageing blue whiting, acetat prints of the otoliths have been studied through a microscope. Primary growth rings have been counted, and provided that these are formed daily, the hatching time could ... -
Production experiment of halibut fry in large enclosed water columns
(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 ...