Browsing Havforskningsinstituttet by Title
Now showing items 4666-4685 of 11594
-
Losing the 'arms race': Multiresistant salmon lice are dispersed throughout the North Atlantic Ocean
(Peer reviewed; Journal article, 2021)Nothing lasts forever, including the effect of chemicals aimed to control pests in food production. As old pesticides have been compromised by emerging resistance, new ones have been introduced and turned the odds back in ... -
Loss of stomach, loss of appetite? Sequencing of the ballan wrasse (Labrus bergylta) genome and intestinal transcriptomic profiling illuminate the evolution of loss of stomach function in fish
(Journal article; Peer reviewed, 2018)The ballan wrasse (Labrus bergylta) belongs to a large teleost family containing more than 600 species showing several unique evolutionary traits such as lack of stomach and hermaphroditism. Agastric fish are found throughout ... -
Loss of stra8 Increases Germ Cell Apoptosis but Is Still Compatible With Sperm Production in Atlantic Salmon (Salmo salar)
(Peer reviewed; Journal article, 2021)Entering meiosis strictly depends on stimulated by retinoic acid 8 (Stra8) gene function in mammals. This gene is missing in a number of fish species, including medaka and zebrafish, but is present in the majority of fishes, ... -
Lovande 0-gruppe-registreringar av lodde i Barentshavet
(Others, 1986-01-14) -
Lovende tobisutsikter [Tore Johannessen uttaler seg om tobiskvoter og tobisbestanden]
(Others, 2010-08-20) -
Lover og forskrifter av betydning for oppdrettsnæringen
(Fisken og havet - Serie B, Others, 1974) -
Low abundance and high patchiness of decapod fauna sampled with van Veen grab on the West African continental margin (Gulf of Guinea, Ghana)
(Peer reviewed; Journal article, 2023)Sixty morphospecies of Decapoda (Malacostraca: Crustacea) representing 34 families were recorded in the material collected in 2012 from 265 van Veen grab (0.1 m2) samples, from the nine transects distributed along the coast ... -
Low anthropogenic mortality of humpback (Megaptera novaeangliae) and killer (Orcinus orca) whales in Norwegian purse seine fisheries despite frequent entrapments
(Peer reviewed; Journal article, 2022)Fishery inspector logbooks were used to estimate fishing gear interaction rates for humpback (Megaptera novaeangliae) and killer (Orcinus orca) whales in Norwegian purse seine fisheries for herring from 2011 to 2020. ... -
Low intestinal inflammation model (HP48) in Atlantic salmon (Salmo salar) and inflammatory mitigation by Bactocell
(Peer reviewed; Journal article, 2022)Moderate levels of intestinal damage and inflammation are often seen in intensive fish aquaculture. The causes may be due to antinutrients from plant meals, stress or other causes. There is currently a lack of good models ... -
Lufenuron treatment temporarily represses gene expression and affects the SUMO pathway in liver of Atlantic salmon
(Peer reviewed; Journal article, 2023)Lufenuron is a benzoylurea insecticide currently in use to combat sea lice infestation in salmon aquaculture in Chile. With pending approval in Norway, the aim of this work was to study the uptake and toxicity of lufenuron ... -
Lumpfish Cyclopterus lumpus reproduction: Pituitary gene expression, physiological and morphological changes accompanying gonadal maturation
(Peer reviewed; Journal article, 2022)Lumpfish is the most important cleanerfish species in Atlantic salmon farming. Detailed information on the gonadal maturation process is a prerequisite for year-round production of juvenile lumpfish. In the present study ... -
Lumpsucker (Cyclopterus lumpus) otoliths: dissection, mounting and age-reading
(Nofima rapportserie, Research report, 2000)A workshop was held at Institute of Marine Research, Flødevigen Marine Research Station, Arendal, Norway, 17-19 February 1999, to investigate methodes for age-determination of lumpsucker (Cyclopterus lumpus) from otoliths. ... -
The lunar compass of European glass eels (Anguilla anguilla) increases the probability that they recruit to North Sea coasts
(Peer reviewed; Journal article, 2020)The European eel hatches in the Sargasso Sea and migrates across the Atlantic Ocean toward Europe. At the continental shelf, larvae metamorphose into glass eels and then recruit to coastal habitats and estuaries. Among ... -
Lusepåslag og velferd hos dypfôret og overflatefôret laks på lokalitet Skrubbholmen midtvinters. – Delrapport fra FHF-prosjekt 901154 «Dypelysogfôring»
(Rapport fra havforskningen;35-2018, Research report, 2018) -
Lusevarsling for havbruket
(Havforskningsnytt, Working paper, 1995) -
The Lusterfjord herring and its environment
(Fiskeridirektoratets skrifter, Serie Havundersøkelser;vol 10 no 2, Research report, 1952) -
Lyd i lakseoppdrett
(Rapport fra havforskningen;2024 - 23, Research report, 2024)Lydnivået på oppdrettsanlegg har økt ettersom anleggene har blitt større, mer mekanisert og bruker en rekke støyende maskiner (arbeids- og brønnbåter, pumper og kompressorer). Lyd brer seg godt under vann og kan høres av ... -
Lydmåling av M/S "Ligrunn"
(Working paper, 1992) -
Lydmåling av M/S "Selvåg Senior"
(Working paper, 1992) -
Lys og temperatur påvirker fiskens adferd - har det konsekvenser for fisketetthet og lyssetting?
(Havforskningsnytt, Working paper, 2006)