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Occurrence and diet of killer whales in northern Norway: seasonal patterns relative to the distribution and abundance of Norwegian spring-spawning herring
(Journal article; Peer reviewed, 1996)Our objectives were to investigate the seasonal occurrence of photoidentified killer whale pods in relation to the distribution of Norwegian spring-spawning herring and whether or not pod-specific differences in the ... -
Effects of seismic shooting on local abundance and catch rates of cod (Gadus morhua) and haddock (Melanogrammus aeglefinus)
(Journal article; Peer reviewed, 1996)To determine whether seismic exploration affected abundance or catch rates of cod (Gadus morhua) and haddock (Melanogrammus aeglefinus), acoustic mapping and fishing trials with trawls and longlines were conducted in the ... -
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 ... -
Coincidence echo statistics
(Journal article; Peer reviewed, 1996)Two scatterers at similar range give an echo which may appear to be due to a single scatterer. Methods for determining target strength that depend on resolving single scatterers may fail in this instance. Statistics ... -
Ei sild, og ei til. V. Færøyane, halvvegs til Island
(Journal article, 1996-05) -
Vertical distribution of fish and krill beneath water of varying optical properties
(Journal article; Peer reviewed, 1996-06-06)The distribution of acoustical scattering layers of fish and krill changed markedly in concert with fluctuating fluorescence (chlorophyll a) in upper waters, possibly due to a varying 'shadow effect'. Beneath clear waters ... -
Transmission of infectious salmon anaemia (ISA) through natural secretions and excretions from infected smolts of Atlantic salmon Salmo salar during their presymptomatic phase
(Journal article; Peer reviewed, 1996-07-18)Short-term (48 h) exposure of healthy Atlantic salmon Salmo salar L. smelts to infectious salmon anemia (ISA)-inoculated cohort smelts showed that the disease was transmitted with near 100% mortality from Day 7 post-inoculation ... -
Effects of turbulence on the predation cycle of fish larvae: comments on some of the issues
(Journal article; Peer reviewed, 1996-08-29) -
Turbulence-induced contact rates in plankton: the issue of scales
(Journal article; Peer reviewed, 1996-08-29) -
Bath treatment, an alternative method for the administration of the quinolones flumequine and oxolinic acid to halibut Hippoglossus hippoglossus, and in vitro antibacterial activity of the drugs against some Vibrio sp.
(Journal article; Peer reviewed, 1996-10-17)Administration of flumequine and oxolinic acid to halibut Hippoglossus hippoglossus by bath resulted in significant tissue levels of both the antibacterials. Bath treatment using 150 mg l(-1) of flumequine and 200 mg l(-1) ... -
Abundance, maturity and growth of the krill species Thysanoessa inermis and T. longicaudata the Barents Sea
(Journal article; Peer reviewed, 1996-12-05)Thysanoessa inermis and T. longicaudata were the dominant krill species observed in the western and central Barents Sea between 1984 and 1992. Both species are typically boreal and subarctic, and were found in very low ... -
Norsk-arktisk torsk: Forskartal, feil og fangstkvote
(Journal article, 1997) -
Sero- and genotyping of some marine aquatic birnavirus isolates from Norway
(Journal article; Peer reviewed, 1997-03-27)Twelve isolates of aquatic birnaviruses (9 field isolates from marine fish and shellfish and the Ab/A(3), Sp/A(2) and N1 strains) were serotyped using an immunodot assay. The assay with 17 monoclonal antibodies revealed ... -
Experimental infection of turbot Scophthalmus maximus and halibut Hippoglossus hippoglossus yolk sac larvae with Aeromonas salmonicida subsp. salmonicida
(Journal article; Peer reviewed, 1997-04-24)The susceptibility of early life stages of turbot Scophthalmus maximus and halibut Hippoglossus hippoglossus to Aeromonas salmonicida subsp. salmonicida was studied in challenge experiments. Eggs of both fish species (and ... -
Detection of a nodavirus-like agent in heart tissue from reared Atlantic salmon Salmo salar suffering from cardiac myopathy syndrome (CMS)
(Journal article; Peer reviewed, 1997-05-22)The present study shows that a nodavirus-like agent is associated with the lesions of cardiac myopathy syndrome (CMS), a disease of unknown etiology which affects reared adult Atlantic salmon Salmo salar. In archive ... -
Vacuolating encephalopathy and retinopathy associated with a nodavirus-like agent: a probable cause of mass mortality of cultured larval and juvenile Atlantic halibut Hippoglossus hippoglossus
(Journal article; Peer reviewed, 1997-05-22)Reared larval and juvenile Atlantic halibut Hippoglossus hippoglossus collected during incidences of mass mortality in 2 hatcheries were studied by light and electron microscopy. A vacuolating encephalopathy and retinopathy ... -
Spatial patterns of the temporal dynamics of three gadoid species along the Norwegian Skagerrak coast
(Journal article; Peer reviewed, 1997-08-28)Time series from an extensive research survey of juveniles of cod Gadus morhua, pollack Pollachius pollachius and whiting Merlangius merlangus sampled from 1919 to 1994 at 38 stations along the Norwegian Skagerrak coast ... -
Effects of ration on the maturation and fecundity in captive Atlantic herring (Clupea harengus)
(Journal article; Peer reviewed, 1998)We examined the effects of amount of food on vitellogenic oocyte size and number (fecundity) between two experimental groups of Atlantic herring (Clupea harengus) kept in separate but identical compartments of a large ... -
Reproduction and development of Calanius finmarchicus, C. glacialis and C. hyperboreus in the Barents Sea
(Journal article; Peer reviewed, 1998)The aim of this study is to examine the reproduction and development of Calanus finmarchicus, C. glacialis and C. hyperboreus in relation to the timing and progress of the phytoplankton spring bloom in different water ... -
Efficacy of Orally Administered Florfenicol in the Treatment of Furunculosis in Atlantic Salmon
(Journal article; Peer reviewed, 1998)This study was performed to determine the efficacy of orally administered florfenicol to treat experimentally induced furunculosis in Atlantic salmon Salmo salar held in seawater. A strain of the causative bacterium, ...