Blar i Havforskningsinstituttet på emneord "fish physiology"
Viser treff 1-20 av 27
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Assessing changes in age and size at maturation in collapsing populations of Atlantic cod (Gadus morhua)
(Journal article; Peer reviewed, 2005)By estimating probabilistic reaction norms for age and size at maturation, we show that maturation schedules of Atlantic cod (Gadus morhua) off Labrador and Newfoundland shifted toward earlier ages and smaller sizes ... -
Automatic recording of fish heart rate on a personal computer
(ICES CM Documents;1988/B:34, Working paper, 1988)From acoustic tags operated into fish in a closed system, the heartbeat signals are sent via underwater telemetry and counted on a personal computer. The computer removes false pulses caused by noise, and calculates the ... -
Ecological and Evolutionary Recovery of Exploited Fish Stocks
(ICES CM documents, Working paper, 2006) -
The effect of interannual variation in growth and condition on haddock recruitment
(Journal article; Peer reviewed, 1999)The relationship between recruitment and spawner biomass assumes that estimates of spawner biomass are proportional to total egg production by the stock. The validity of this assumption is in question for long-lived ... -
The gas content in the coregonid swimbladder
(Fiskeridirektoratets skrifter, Serie Havundersøkelser;vol 15 no 3, Research report, 1969) -
Genetic impact on two wild brown trout (Salmo trutta) populations after release of non-indigenous hatchery spawners
(Journal article; Peer reviewed, 1996)A genetically marked hatchery strain of brown trout (Salmo trutta) was employed to study the genetic impact from non-indigenous hatchery fish on wild stocks. The hatchery spawners were released in autumn 1989 into the ... -
Hepatic EROD activity in dab Limanda limanda the German Bight using an improved plate-reader method
(Journal article; Peer reviewed, 1992-12-31)During the Bremerhaven Workshop an improved, fast and easy method for the determination of ethoxyresorufin-O-deethylase (EROD) activity in dab Limanda limanda liver was tested. The improvement involved the use of a 12500 ... -
Implications of density-dependent juvenile growth for compensatory recruitment regulation of haddock
(Journal article; Peer reviewed, 1999)Data from bottom trawl surveys conducted by Canada and the United States were used to describe temporal trends in the length of haddock ages 1–4 on the southwestern Scotian Shelf (SWSS) and Bay of Fundy. From 1970 to 1995, ... -
Individual growth rate and age at first sexual maturity in atlantic salmon
(ICES CM Documents;1977/E:60, Working paper, 1977) -
Interannual variations in the liver condition index of cod as an indicator of temperature and feeding conditions in the Barents Sea
(ICES CM Documents;2001/V:31, Working paper, 2001)Background: Northeast Arctic cod, inhabiting the edge of the species area, experience variable environmental conditions and feeding resources, one of the main of them is capelin. Lipids are an important biochemical link ... -
Kveite - botntilhøve og helsesituasjon
(Havforskningsnytt, Working paper, 1995) -
MMP-13 (Matrix MetalloProteinase 13) expression might be an indicator for increased ECM remodeling and early signs of vertebral compression in farmed Atlantic salmon (Salmo salar L.)
(Journal article; Peer reviewed, 2010-04)Vertebral body compression is a common problem in commercial farming of Atlantic salmon. Although risk factors, such as vaccination and alnutrition, have been identified, the etiology is largely unknown. Histological studies ... -
Muskelstruktur og filetkvalitet hos kveite
(Havforskningsnytt, Working paper, 2001) -
Observations of cod behaviour reveal insights into the function and properties of the swimbladder under pressure
(ICES CM documents, Working paper, 2006)Atlantic cod (Gadus morhua L.) is a highly adaptive boreal species with a broad distribution through different ecosystems in the North Atlantic. Diet, environmental factors and population dynamics vary enormously ... -
Oppdrett av steril fisk
(Rapport fra Havforskningen;Nr. 18 - 2012, Working paper, 2012-04)I andre land og andre arter er det vanlig å bruke triploidisering og/eller oppdrett av monosexbesetninger (f.eks all female). I noen andre arter er det dessuten vanlig å bruke sterile hybrider til ulike typer formål. ... -
Oppdrettstorsk - tidlig modning
(Havforskningsnytt, Working paper, 1993) -
Physical stress on halibut larvae
(ICES CM Documents;1986/F:18, Working paper, 1986)Halibut larvae were exposed to physical stress in the form of different levels of airation. Survival rate, development, dry weight, RNA, DNA and protein were measured. At the end of the experiment the larvae exposed to ... -
Physiological changes in blood and seminal plasma during the spawning period of maturing rainbow trout held under different temperature and salinity regimes, and the effect on survival of the broodstock and the eyed eggs
(ICES CM Documents;1988/F:3, Working paper, 1988)Maturing rainbow trouts reared in sea cages were transferred to tanks and kept under nine different temperature and salinity regimes. Blood and seminal fluids were regularly sampled from the fish, and different organic ... -
Redescription of Microsporidium takedai (Awakura, 1974) as Kabatana takedai (Awakura, 1974) comb. n.
(Journal article; Peer reviewed, 2001-04-10)Ultrastructural study of the microsporidian Microsporidium takedai from the muscles of masu salmon Oncorhynchus masou proved that this species can be assigned to the genus Kabatana Lom, Dykova and Tonguthai, 2000. The ... -
Report of the Blue Whiting Otolith Reading Workshop [Tórshavn, Faroe Islands, 2- 6 November, 1992]
(ICES CM Documents;1993/H:6, Working paper, 1993)