Browsing Brage IMR by Title
Now showing items 6017-6036 of 11576
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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 ... -
Physical variability in the sea and the consequences for fisheries hydrography
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1969)Progress in fisheries hydrography depends on progress in the knowledge of physical and chemical variability in the sea. This variability is caused by short term changes in the fine structure of layering in temperature, ... -
Physiological and flesh quality consequences of pre-mortem crowding stress in Atlantic mackerel (Scomber scombrus)
(Peer reviewed; Journal article, 2020)In commercial wild capture pelagic fisheries it is common practice to crowd catches to high densities to allow efficient pumping onboard. Crowding during the final stages of purse seine capture for small pelagic species ... -
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 ... -
Physiological response and survival of Atlantic mackerel exposed to simulated purse seine crowding and release
(Peer reviewed; Journal article, 2021)Understanding how animals physiologically respond to capture and release from wild capture fishing is fundamental for developing practices that enhance their welfare and survival. As part of purse seine fishing for small ... -
Physiological responses of farmed Atlantic salmon and two cohabitant species of cleaner fish to progressive hypoxia
(Journal article; Peer reviewed, 2019)To mitigate salmon lice infestations in Atlantic salmon (Salmo salar) sea cages, deployment of cleaner fish have become a widespread strategy. However, species of cleaner fish may experience poor welfare in the highly ... -
Physiological stress and recovery kinetics in trawl escapees of the Antarctic krill Euphausia superba Dana, 1850 (Euphausiacea)
(Peer reviewed; Journal article, 2021)When caught in a trawl, some individuals interacting with the fishing gear may escape, but such interactions may lead to physiological trauma that causes direct delayed mortality and/or increased vulnerability to predation. ... -
Phytoplankton depletion by mussel aquaculture: high resolution mapping, ecosystem modeling and potential indicators of ecological carrying capacity
(ICES CM documents;2008/ H:12, Working paper, 2008)Mussels held in suspended culture have an exceptional capacity to filter the water column and reduce suspended particle concentrations. However, seston depletion is only of concern if the phytoplankton are cleared faster ... -
Phytoplankton Distribution in the Norwegian Sea in June, 1952 and 1953
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1960)1. The quantitative observations which have been made up to now (cp. Fig. 1) have demonstrated that the Norwegian Sea is an area where great variations are encountered in the phytoplankton vegetation. 2. Within the ... -
Phytoplankton Distribution in the Norwegian Sea in June, 1954, Related to Hydrography and Compared with Primary Production Data
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1960)I. Quantitative phytoplankton samples, collected during a cruise in the Norwegian Sea in June, 1954, by the research vessel «G. O. Sars», were worked up by means of the sedimentation metliod. Data on hydrography, primary ... -
Phytoplankton observations in offshore Norwegian coastal waters between 62°N and 69°N - I. Variation in time of the spring diatom maximum 1968-71
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1978)An attempt was made to trace yearly fluctuations in the timing of the spring diatom maximum along the Norwegian west coast, 62°N-69°N. Qantitative data on the diatom population at 281 stations with 0 m samples and 120 ... -
Picoeucaryot alga infecting blue mussel Mytilus edulis in southern Norway
(Journal article; Peer reviewed, 2005-01-25)During summer 2001, blue mussels Mytilus edulis with abnormal shell growth were collected near Kragerø, southern Norway. The mussels had green spots in their mantle tissues, mainly posteriorly and ventrally, and in the ... -
A Piece of the Puzzle—Possible Mechanisms for Why Low Dietary EPA and DHA Cause Hepatic Lipid Accumulation in Atlantic Salmon (Salmo salar)
(Peer reviewed; Journal article, 2022)The present study aimed at elucidating the effects of graded levels of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) on the hepatic metabolic health of Atlantic salmon reared in sea cages. Diets containing 10, ... -
Pigghåtoktet 2022 - Et samarbeidstokt mellom Havforskningsinstituttet og Måløy Videregående Skole, med opplæringsfartøyet MS Skulebas Senior
(Toktrapport;2022 - 14, Research report, 2022)Pigghå er en datafattig og rødlistet art som historisk har gitt grunnlag for et stort fiskeri med årlige landinger på mer enn 40 000 tonn i mer enn 40 år. Etter langvarig overfiske og etterfølgende bestandssammenbrudd har ... -
Pigghåundersøkelsene
(Fisken og havet;1961 - Nr. 1, Research report, 1961)In the first half of this paper is given an abbreviated account of the biology of the spur dog. In the latter half of the paper the Norwegian dogfish taggings are dealt with: a. A short description of the tags used. b. ... -
Pigmentation of salmonid - a comparison of astaxanthin and cantaxanthin as pigment sources for rainbow trout
(ICES CM Documents;1985/F:24, Working paper, 1985)Rainbow trout were fed a diet supplemented with astaxanthin and cantaxanthin. The ratios of astaxanthin to cantaxanthin were determined in plasma, faeces and flesh. During 65 days of feeding the flesh reached a level ... -
Pigmentation of salmonids: Factors affecting carotenoid deposition in rainbow trout (Salmo gairdneri)
(ICES CM Documents;1984/F:23, Working paper, 1984)Factors affecting carotenoid deposition in rainbow trout (Salmo gairdneri) were investigated in three feeding experiments. The deposition of astaxanthin in the flesh increased significantly with increasing levels of ... -
Pigmentering av lakse- og ørretkjøtt
(Fisken og havet - Serie B, Working paper, 1974) -
PILOT 2023 Rene Vassdrag — Etnevassdraget
(Rapport fra havforskningen, Research report, 2023)PILOT 2023 Rene vassdrag ble utlyst av Handelens Miljøfond i februar 2023. Målet var å rydde ulike vassdrag på vestlandet for søppel før det blir transportert ut i havet. Etnevassdraget var et av de utvalgte vassdragene, ... -
Pilot project for the short-time live storage of bluefin tuna — Trials onboard MS Vestbris 2023
(Rapport fra havforskningen;2023 - 56, Research report, 2023)Norway was historically a major bluefin tuna (BFT) harvesting country. However, fishing for this species has experienced low profitability. One potential solution is short-term live-storage so that the market can be supplied ...