Blar i Registrations from Cristin på forfatter "Imsland, Albert"
-
Acoustic Delicing of Atlantic Salmon (Salmo salar): Fish Welfare and Salmon Lice (Lepeophtheirus salmonis) Dynamics
Hjelle, Bibbi Maria Kallay; Imsland, Albert; Vigo, Pablo Balseiro; Handeland, Sigurd Olav (Journal article; Peer reviewed, 2022)Acoustic lice treatment (AcuLice) is a newly developed system, which uses a composite acoustic sound image with low-frequency sound to remove salmon lice (Lepeophtheirus salmonis) from Atlantic salmon (Salmo salar). This ... -
Caligus elongatus and other sea lice of the genus Caligus as parasites of farmed salmonids: A review
Hemmingsen, Willy; MacKenzie, Ken; Sagerup, Kjetil; Remen, Mette; Bloch-Hansen, Karin; Imsland, Albert (Journal article; Peer reviewed, 2020)This review was prompted by reports of unusually large numbers of sea lice tentatively identified as Caligus elongatus infesting farmed salmon in northern Norway. Following a brief introduction to the sea lice problem in ... -
Catch me if you can: How to recapture lumpfish using light as an attractant
Foss, Atle; Imsland, Albert; Roth, Bjørn; Nytrø, Ane Vigdisdatter (Journal article; Peer reviewed, 2020)The use of lumpfish in salmon farming allows the removal of sea lice all year round, without the use of chemicals or mechanical treatments. In Norway alone, around 31 million lumpfish are currently put into sea pens whereas ... -
Causes of Mortality and Loss of Lumpfish Cyclopterus lumpus
Reynolds, Patrick; Imsland, Albert; Boissonnot, Lauris Jeannine Ernestine (Journal article; Peer reviewed, 2022)Data from research and commercial use of lumpfish were collected from the research facilities of Gifas (Inndyr, Northern Norway, 67.0° N, 14.0° E). The data were sourced from 12 main lumpfish groups subdivided into 66 ... -
Cleaner Fish Do Not Impact the Pigmentation of Salmon Lice (Lepeophtheirus salmonis) in Commercial Aquaculture Cages
Imsland, Albert; Berg, Jon Petter; Nola, Velimir; Geitung, Lena; Oldham, Tina Marie Wier (Journal article; Peer reviewed, 2023-09-10)Salmon lice are one of the biggest challenges to sustainable salmonid aquaculture. The species display high evolutionary potential, which is evident by its development of resistance to numerous chemical compounds used for ... -
Comparing Body Density of Lumpfish (Cyclopterus lumpus) to Different Operational Welfare Indicators
Imsland, Albert; Berg, Magnus Sunason; Haugland, Gyri Teien; Eliasen, Kirstin (Journal article; Peer reviewed, 2022)Farmed lumpfish (Cyclopterus lumpus) are commonly used as cleaner fish in the salmonid aquaculture industry, but a knowledge gap exists with regards to their body density. Filling this knowledge gap is of importance, as ... -
Constant High Temperature Promotes Early Changes in Testis Development Associated with Sexual Maturation in Male Atlantic Salmon (Salmo salar L.) Post-Smolts
Pino Martinez, Enrique; Braanaas, Markus; Balseiro Vigo, Pablo; Kraugerud, Marianne; Pinto Pedrosa, Cindy; Imsland, Albert; Handeland, Sigurd Olav (Journal article; Peer reviewed, 2022)Sexual maturation of post-smolts is a concern for Atlantic salmon producers, and its occurrence is dependent upon factors such as water temperature and energy availability, among others. The present study was designed to ... -
The effect of CO2, total ammonia nitrogen and pH on growth of juvenile lumpfish (Cyclopterus lumpus)
Thorarensen, Helgi; Imsland, Albert; Monroe, Amber Christina (Journal article; Peer reviewed, 2023)The objective of this study was to examine the effects of CO2, total ammonia nitrogen (TAN: nitrogen bound as either NH3 or NH4+) and pH on the growth and survival of juvenile lumpfish in a two-month growth study. The ... -
Effect of Photoperiod and Transfer Time on Atlantic Salmon Smolt Quality and Growth in Freshwater and Seawater Aquaculture Systems
Pino Martinez, Enrique; Imsland, Albert; Hosfeld, Anne-Camilla Diesen; Handeland, Sigurd Olav (Journal article; Peer reviewed, 2023)Smoltification is a key process in Atlantic salmon aquaculture, given it prepares the fish for a successful transit from fresh to seawater. However, industry players have not yet reached a consensus on the best protocols ... -
Effect of rearing temperature on flesh quality in Arctic charr (Salvelinus alpinus)
Imsland, Albert; Ólafsdóttir, Aðalheiður; Árnason, Jón; Gústavsson, Arnþór; Thorarensen, Helgi; Gunnarsson, Snorri (Journal article; Peer reviewed, 2021)Currently, no information is available on the effect of progressively decreasing temperatures on the sensory quality of Arctic charr. The objective of this study was to investigate if and how different and progressively ... -
The effect of temperature on growth performance and aerobic metabolic scope in Arctic charr, Salvelinus alpinus (L.)
Beuvard, Christian; Imsland, Albert; Thorarensen, Helgi (Journal article; Peer reviewed, 2022)In recent years, Arctic char populations in Iceland have declined and the objective of this experiment was to throw further light on these changes by examining the effect of temperature (5, 9, 13, 17, and 21 °C) on the ... -
The effects of cryogenically preserved sperm on the fertilization, embryonic development and hatching success of lumpfish C. lumpus
Imsland, Albert; Purvis, Emily; Reinardy, Helena; Kapari, Lauri Teemu; Watts, Ellie Jane; Hangstad, Thor Arne (Journal article; Peer reviewed, 2022)Lumpfish (C. lumpus) are used as cleaner fish in the Atlantic salmon (Salmo salar) farming industry to remove parasitic sea lice. At present, wild lumpfish broodstock are used which puts strain on wild populations. By ... -
Genome- and transcriptomederived microsatellite loci in lumpfsh Cyclopterus lumpus: molecular tools for aquaculture, conservation and fsheries management
Maduna, Simo; Vivian-Smith, Adam; Jónsdóttir, Ólöf Dóra Bartels; Imsland, Albert; Klutsch, Cornelya; Nyman, Tommi; Eiken, Hans Geir; Hagen, Snorre (Journal article; Peer reviewed, 2020)The lumpfish Cyclopterus lumpus is commercially exploited in numerous areas of its range in the North Atlantic Ocean, and is important in salmonid aquaculture as a biological agent for controlling sea lice. Despite the ... -
Genomic Signatures of Local Adaptation under High Gene Flow in Lumpfish—Implications for Broodstock Provenance Sourcing and Larval Production
Maduna, Simo; Jónsdóttir, Ólöf Dóra Bartels; Imsland, Albert; Gíslason, Davíð; Reynolds, Patrick; Kapari, Lauri Teemu; Hangstad, Thor Arne; Meier, Kristian; Hagen, Snorre (Journal article; Peer reviewed, 2023-09-26)Aquaculture of the lumpfish (Cyclopterus lumpus L.) has become a large, lucrative industry owing to the escalating demand for “cleaner fish” to minimise sea lice infestations in Atlantic salmon mariculture farms. We used ... -
Impact of environmental factors on the growth and maturation of farmed Arctic charr
Imsland, Albert; Gunnarsson, Snorri; Thorarensen, Helgi (Journal article; Peer reviewed, 2020)Farming of Arctic charr mainly takes place in land‐based farms applying intensive rearing methods with relatively high production costs. Depending on local conditions at each site, it is possible to regulate important ... -
In lumpfish We Trust? The Efficacy of Lumpfish Cyclopterus lumpus to Control Lepeophtheirus salmonis Infestations on Farmed Atlantic Salmon: A Review
Imsland, Albert; Reynolds, Patrick (Journal article; Peer reviewed, 2022)In this review, we have systematized current knowledge about the effect of stocking lumpfish (Cyclopterus lumpus) as cleaner fish to control Lepeophtheirus salmonis infestations on farmed Atlantic salmon (Salmo salar L.). ... -
Interaction of temperature and feed ration on male postsmolt maturation of Atlantic salmon (Salmo salar L.)
Pino Martinez, Enrique; Balseiro Vigo, Pablo; Stefansson, Sigurd Olav; Kaneko, Nobuto; Norberg, Birgitta; Fleming, Mitchell Stewart; Imsland, Albert; Handeland, Sigurd Olav (Journal article; Peer reviewed, 2023)Early maturation of Atlantic salmon male postsmolts is undesirable in aquaculture due to its negative impact on growth, welfare and seawater adaptation, however it is an increasing problem under intensive rearing conditions. ... -
Interaction of temperature and photoperiod on male postsmolt maturation of Atlantic salmon (Salmo salar L.)
Pino Martinez, Enrique; Balseiro Vigo, Pablo; Fleming, Mitchell Stewart; Stefansson, Sigurd Olav; Norberg, Birgitta; Imsland, Albert; Handeland, Sigurd Olav (Journal article; Peer reviewed, 2023)Maturation of Atlantic salmon male postsmolts is a concern in aquaculture due to its increasing occurrence under intensive rearing conditions and its negative impact on growth, welfare and seawater readiness. The effect ... -
Investigation of growth performance of post-smolt Atlantic salmon (Salmo salar L.) in semi closed containment system: A big-scale benchmark study
Øvrebø, Tarald Kleppa; Vigo, Pablo Balseiro; Imsland, Albert; Stefansson, Sigurd Olav; Tveterås, Ragnar; Sveier, Harald; Handeland, Sigurd Olav (Journal article; Peer reviewed, 2022)The Norwegian salmon industry faces challenges related to sea lice (Lepeophtheirus salmonis) infestations, escapees, diseases and environmental impact. Semi-closed containment systems (S-CCS) have been proposed to abate ... -
Lack of population genetic structure of lumpfish along the Norwegian coast: A reappraisal based on EST-STRs analyses
Jónsdóttir, Ólöf Dóra Bartels; Gíslason, Davíð; Ólafsdóttir, Guðbjörg; Maduna, Simo; Hagen, Snorre; Reynolds, Patrick; Sveinsson, Sæmundur; Imsland, Albert (Journal article; Peer reviewed, 2022)Lumpfish is now the single most important cleaner fish species to date and there is an extensive lumpfish translocation along the Norwegian coast. A reliable baseline information about the population genetic structure of ...