Browsing Brage IMR by Title
Now showing items 6277-6296 of 11576
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Prevalence of piscine orthoreovirus and salmonid alphavirus in sea-caught returning adult Atlantic salmon (Salmo salar L.) in northern Norway
(Journal article; Peer reviewed, 2018)Heart and skeletal muscle inflammation (HSMI) caused by piscine orthoreovirus (PRV) and pancreas disease (PD) caused by salmonid alphavirus (SAV) are among the most prevalent viral diseases of Atlantic salmon farmed in ... -
Prevention not cure: a review of methods to avoid sea lice infestations in salmon 1 aquaculture
(Peer reviewed; Journal article, 2020)The Atlantic salmon aquaculture industry still struggles with ectoparasitic sea lice despite decades of research and development invested into louse removal methods. In contrast, methods to prevent infestations before they ... -
Prey consumtion by Barents sea harp seals in the period 1990-2005
(ICES CM documents, Working paper, 2006)The Barents Sea ecosystem has experienced major fluctuations in species abundance in the past 20-30 years. The mechanisms behind these fluctuations are complex and arise from numerous interactions between species and the ... -
Prey selection by larval haddock and cod on copepods with species-specific behavior: an individual-based model analysis
(Journal article; Peer reviewed, 2009-12-09)Coupled biological-physical models of larval fish have become a widely used tool for studying recruitment variability. Within these models, foraging components include prey selection as a determinant of food availability ... -
Prey selection of early juvenile cod (Gadus morhua L.) in the Barents Sea
(ICES CM documents, Conference object, 2006) -
Prey selection of early juvenile cod (Gadus morhua L.) in the Barents Sea
(ICES CM documents, Conference object, 2006) -
Prey selection of offshore killer whales Orcinus orca in the Northeast Atlantic in late summer: spatial associations with mackerel
(Journal article; Peer reviewed, 2014-03-03)The traditional perception of prey species preference of killer whales Orcinus orca L. in the Northeast Atlantic has, to a large extent, been linked to herring Clupea harengus L. Few studies have investigated the feeding ... -
Prey-specific gastric evacuation of Norwegian spring spawning herring (Clupea harengus)
(ICES CM Documents;2004/P:39, Working paper, 2004)Gastric evacuation rates have earlier mainly been measured based on laboratory experiments. The aim of this study is to obtain information of gastric evacuation rates when the herring are feeding in their natural environment. ... -
Primary growth increments in otoliths of cod larvae (Gadus morhua L.) of the Arcto-Norwegian cod stock
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1982)Primary growth increments have been detected in the otoliths of wild-caught, first-feeding cod larvae, living in a habitat where the light intensity is above the light threshold for visual feeding during 24 hours, and ... -
Primary growth increments in otoliths of cod larvae (Gadus morhua L.) of the Arcto-Norwegian cod stock
(ICES CM Documents;1981/G:54, Working paper, 1981)Primary growth increments are laid down in the otoliths of cod larvae living in a habitat where the light intensity is above the light threshold for visual feeding during 24 hours, and in which the larvae were observed to ... -
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 ... -
Primary growth rings in otoliths of Barents Sea capelin
(Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1985)Formation of primary growth rings in otoliths of Barents Sea capelin was studied both for fish of known age, from rearing in a basin, and for field-sampled fish. The numbers of growth rings were related to fish length ... -
Primary growth rings in otoliths of the Barents Sea capelin
(ICES CM Documents;1982/H:9, Working paper, 1982) -
Primary production enhancement by artificial upwelling in a western Norwegian fjord
(Journal article; Peer reviewed, 2007-12-20)To enhance primary production rate for shellfish cultivation in fjords, a large-scale artificial upwelling experiment was carried out in a western Norwegian fjord during the summers of 2004 and 2005. Pumping 2 m3 s–1 ... -
Primary production in relation to climatic changes in the Barents Sea
(PINRO-IMR Symposium, Conference object, 1987)The Barents Sea is charaeterized by extreme environmental conditions that have considerable infiuence on the biological development, especially during spring. Based on physical and biological observations obtained during ... -
The primary production in the Norwegian Sea June 1954, as measured by an adapted 14C-technique
(ICES CM Documents;1957/C:22, Working paper, 1957) -
Primærproduksjon (planteplankton)
(Havets ressurser og miljø, Chapter, 2007)In the Barents Sea, the monitoring of phytoplankton abundance and species composition is carried out on the transects Fugløya–Bjørnøya and Vardø–N and during the regional covering of the area in the autumn. The ... -
Primærproduksjonen og planteplanktonbestanden i området Andøya - Nordkapp i 1975
(Fisken og havet - Serie B, Working paper, 1978) -
Primærproduksjonsforholdene i Ytre Oslofjord
(Fisken og havet, Research report, 1995)Med bakgrunn i klorofyll og lysdata og ved hjelp av en enkelt algoritme, har den årlige primærproduksjonen i Ytre Oslofjord blitt beregnet til ca. 100 gC m-2. En sammeligning av årsproduksjoner basert på beregnede og ... -
Principles of the ecosystem approach to fisheries management
(IMR/PINRO Joint Report Series, Conference object, 2005)