Blar i Havforskningsinstituttet på emneord "cod larvae"
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An attempt to start feed cod larvae with artificial diets
(ICES CM Documents;1981/F:14, Working paper, 1981)Larval cod were fed 8 different diets based on zooplancton and hen's eggs. All but one diets were ingested, but no growth was observed. The failure of the diets to promote growth is thouqht to be related to the low digestive ... -
Bassengstudier av torskelarvens næringsvalg, vekst og overlevning, fra klekking til metamorfose
(Master thesis, 1978) -
Changes in buoyancy and activity during starvation of cod larvae (Gadus morhua L. )
(ICES CM Documents;1976/F:33, Working paper, 1976) -
A comparison of egg quality and larval viability between cultured coastal cod and wild arcto-norwegian cod
(ICES CM documents;1991/F:41;, Working paper, 1991)Experiments on cod eggs revealed an inverse relationship between egg diameter and mortality. Further, larvae hatching from small eggs showed a redeuced feeding ability. Other methods to characterice larval viability ... -
Development of Atlantic cod (Gadus morhua) exposed to produced water during early life stages: Effects on embryos, larvae, and juvenile fish
(Journal article; Peer reviewed, 2010-08-21)Produced water (PW) contains numerous toxic compounds of natural origin, such as dispersed oil, metals, alkylphenols (APs), and polycyclic aromatic hydrocarbons (PAHs). In addition, PW also contains many different chemicals ... -
Endocrine and nutritional factors affecting the first food uptake by cod larvae
(ICES CM Documents;1982/F:17, Working paper, 1982) -
Environmental toxicology: Population modeling of cod larvae shows high sensitivity to loss of zooplankton prey
(Journal article; Peer reviewed, 2010-12-30)Two factors determine whether pollution is likely to affect a population indirectly through loss of prey: firstly, the sensitivity of the prey to the pollutants, and secondly, the sensitivity of the predator population to ... -
Environmental toxicology: Population modeling of cod larvae shows high sensitivity to loss of zooplankton prey
(Journal article; Peer reviewed, 2010-12-30)Two factors determine whether pollution is likely to affect a population indirectly through loss of prey: firstly, the sensitivity of the prey to the pollutants, and secondly, the sensitivity of the predator population to ... -
Feeding conditions of Arcto-Norwegian cod larvae compared to the Rothschild-Osborn theory on small-scale turbulence and plankton contact rates. [HELP 29]
(help, Research report, 1989)Data on first feeding Arcto-norwegim cod larvae in Lofoten, northern Norway, sampled during the period 1974 - 1984, are examined to verify the theory on the influence of small-scale turbulence on the contact rate between ... -
Feeding conditions of north-east Arctic (Arcto-Norwegian) cod larvae compared to the Rothschild-Osborn theory on small-scale turbulence and plankton contact rates
(ICES CM Documents;1989/G:19, Working paper, 1989)Data on first feeding North-east arctic cod larvae in Lofoten, sampled during the period 1976 - 1984, are examined to verify the theory on the influence of microturbulence on the contact rate between predator and prey ... -
Foraging behaviour of larval cod (Gadus morhua) at low light intensities
(Journal article; Peer reviewed, 2011-02-13)The ability to forage at low light intensities can be of great importance for the survival of fish larvae in a pelagic environment. Three-dimensional silhouette imaging was used to observe larval cod foraging and swimming ... -
Foraging behaviour of larval cod (Gadus morhua) at low light intensities
(Journal article; Peer reviewed, 2011-02-13)The ability to forage at low light intensities can be of great importance for the survival of fish larvae in a pelagic environment. Three-dimensional silhouette imaging was used to observe larval cod foraging and swimming ... -
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 ... -
A guide to the extraction and interpretation of otoliths from larval and pelagic juvenile Arcto-Norwegian cod.
(Fisken og havet, Research report, 1996)The techniques for extraction of the lapillar otoliths, and interpretation of otolith microstructure in Arcto-Norwegian cod (Gadus morhita L.) is outlined and reviewed. Increment deposition in this species is daily, ... -
Individual-based modeling of feeding ecology and prey selection of larval cod on Georges Bank
(Journal article; Peer reviewed, 2009-02-11)Understanding larval fish survival dynamics is essential to determining variability in future adult population structure. Realistic modeling of larval fish feeding ecology depends on incorporating both the biotic and abiotic ... -
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) -
Intensiv oppdrett av torskelarvar (Gadus morhua L.) i posar
(Master thesis, 1986) -
Intensive production of cod fry at Austevoll. Final report.
(ICES CM Documents;1984/F:33, Working paper, 1984)The experiences of this final season of the intensive cod fry production experiment are summed up. The brood stock yielded 369 liters of cod eggs. The production experiment in plastic pens had very high survival, but ... -
Large-scale rearing of cod fry (Gadus morhua) in an inlet
(ICES CM Documents;1981/F:11, Working paper, 1981) -
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 ...