Browsing Havforskningsinstituttet by Title
Now showing items 4635-4654 of 11581
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Long-term changes in the total egg production of Norwegian spring-spawning herring Clupea harengus (L.)—Implications of variations in population structure and condition factor
(Journal article; Peer reviewed, 2010-05)The reproductive potential of Norwegian spring-spawning herring (Clupea harengus) was estimated in terms of total egg production (TEP) for the period 1935–2005, using a model where spawning stock numbers (SSN)-, weight- ... -
Long-term decrease in sex-specific natural mortality of European lobster within a marine protected area
(Journal article; Peer reviewed, 2013-10-02)Marine protected areas (MPAs) and marine reserves hold promise as tools for nature conservation and fisheries management, but data on long-term demographic effects are still sparse. Here, we use a unique capture-mark-recapture ... -
Long-term effect of parental selenium supplementation on the one-carbon metabolism in rainbow trout (Oncorhynchus mykiss) fry exposed to hypoxic stress
(Peer reviewed; Journal article, 2022)This study evaluated how different forms of selenium (Se) supplementation into rainbow trout broodstock diets modified the one-carbon metabolism of the progeny after the beginning of exogenous feeding and followed by hypoxia ... -
Long-term effects of environmentally relevant doses of 2,2 ',4,4 ',5,5 ' hexachlorobiphenyl (PCB153) on neurobehavioural development, health and spontaneous behaviour in maternally exposed mice
(Peer reviewed; Journal article, 2011)Background: Polychlorinated biphenyls (PCBs) are widespread in the environment, human food and breast milk. Seafood is known to contain nutrients beneficial for the normal development and function of the brain, but also ... -
Long-term feeding of Atlantic salmon with varying levels of dietary EPA+DHA alters the mineral status, but does not affect the stress responses after mechanical delousing stress
(Peer reviewed; Journal article, 2022)Atlantic salmon were fed diets containing graded levels of EPA + DHA (1·0, 1·3, 1·6 and 3·5 % in the diet) and one diet with 1·3 % of EPA + DHA with reduced total fat content. Fish were reared in sea cages from about 275 ... -
Long-term fluctuations in cod and pollack along the Norwegian Skagerrak coast
(Journal article; Peer reviewed, 1998-02-12)We tested whether the long-term fluctuations in abundance of 0-group cod Gadus morhua and pollack Pollachius pollachius sampled from 1919 to 1994 at 38 stations along the Norwegian Skagerrak coast might be related to the ... -
Long-term interplay between harvest regimes and biophysical conditions may lead to persistent changes in age at sexual maturity of Northeast Arctic cod (Gadus morhua)
(Peer reviewed; Journal article, 2022)This investigation commenced by constructing principal maturation schedule equations as a function of fishing mortality (F), key biophysical factors and a term attributed to fisheries-induced adaptive change (FIAC). Following ... -
Long-term investigation of the ‘soft flesh’ condition in Northeast Atlantic mackerel induced by the myxosporean parasite Kudoa thyrsites (Cnidaria, Myxozoa): Temporal trends and new molecular epidemiological observations
(Peer reviewed; Journal article, 2022)Northeast Atlantic (NEA) mackerel (Scomber scombrus, Scombridae) represents an economically important target for the Norwegian pelagic fishing industry. Despite the commercial significance of NEA mackerel, little is known ... -
Long-term monitoring of a brown trout (Salmo trutta) population reveals kin-associated migration patterns and contributions by resident trout to the anadromous run
(Peer reviewed; Journal article, 2021)In species showing partial migration, as is the case for many salmonid fishes, it is important to assess how anthropogenic pressure experienced by migrating individuals affects the total population. We focused on brown ... -
Long-term monitoring of a brown trout (Salmo trutta) population reveals kin-associated migration patterns and contributions by resident trout to the anadromous run
(Dataset, 2021)This is the final dataset used in the Duval et al. (in review) study “Long-term monitoring of a brown trout (Salmo trutta) population reveals kin-associated migration patterns and contributions by resident trout to the ... -
Long-term movement patterns of coastal cod (Gadus morhua)
(ICES CM Documents;2001/L:18, Working paper, 2001)Movement patterns were studied by means of hydroacustic telemetry along the Norwegian Skagerrak coast. Ultrasonic transmitters was surgically implanted in 10 coastal cod, and released in the same area as they where caught. ... -
Long-term optimal exploitation of cod and capelin in the Barents Sea using the Bifrost model [presentation]
(IMR/PINRO Joint Report Series;2/2005, Conference object, 2005) -
Long-term optimal exploitation of cod and capelin in the Barents Sea using the Bifrost model [presentation]
(IMR/PINRO Joint Report Series;2/2005, Conference object, 2005) -
Long-term persistence of piscine orthoreovirus-1 (PRV-1) infection during the pre-smolt stages of Atlantic salmon in freshwater
(Peer reviewed; Journal article, 2023)Piscine orthoreovirus (PRV) causes heart and skeletal muscle inflammation (HSMI) in farmed Atlantic salmon. During salmon production cycles, HSMI has predominantly been observed after seawater transfer. More recently, ... -
A long-term perspective on the Chrysochromulina bloom on the Norwegian Skagerrak coast 1988: a catastrophe or an innocent incident?
(Journal article; Peer reviewed, 2000-11-22)The long-term effects of the 1988 algal bloom (Chrysochromulina polylepis Manton et Parke) along the Norwegian Skagerrak coast are evaluated and discussed on the basis of several monitoring programmes. Effects on individual ... -
Long-Term Statistics of Observed Bubble Depth Versus Modeled Wave Dissipation
(Peer reviewed; Journal article, 2020)Air bubble penetration depths are investigated with a bottom‐mounted echosounder at a seabed observatory in northern Norway. We compare a 1‐year time series of observed bubble depth against modeled and estimated turbulent ... -
Long-term survey series on 0-group in the Barents Sea
(IMR/PINRO Joint Report Series;5/2007, Conference object, 2007) -
Long-term survey series on 0-group in the Barents Sea
(IMR/PINRO Joint Report Series;5/2007, Conference object, 2007) -
Long-term temperature ternds in Norwegian coastal waters
(ICES CM Documents;1981/C:19, Working paper, 1981)Time series of sea surface temperature at four meteorological stations on the coast of Norway are compared with observations from three fixed oceanographic stations in Norwegian coastal waters. The longest time series at ... -
Long-term variability in spawning stock age structure influences climate–recruitment link for Barents Sea cod
(Peer reviewed; Journal article, 2022)Fish populations may spawn a vast number of offspring, while only a small and highly variable fraction of a new cohort survives long enough to enter into the fisheries as recruits. It is intuitive that the size and state ...