Browsing Scientific publications by Author "Uglem, Ingebrigt"
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AS WE SEE IT Reared fish, farmed escapees and wild fish stocks-a triangle of pathogen transmission of concern to Mediterranean aquaculture management
Arechavala-Lopez, P.; Sanchez-Jerez, P.; Bayle-Sempere, J.T.; Uglem, Ingebrigt; Mladineo, I. (Peer reviewed; Journal article, 2013)Although aquaculture in the Mediterranean is a relatively young industry, finfish dis eases have been reported to cause considerable problems and mortalities among the farmed stocks. In general, the farming activity and ... -
Behaviour and survival of wild Atlantic salmon Salmo salar captured and released while surveillance angling for escaped farmed salmon
Lennox, Robert J.; Havn, Torgeir Børresen; Thorstad, Eva Bonsak; Liberg, Egil; Cooke, Steven J.; Uglem, Ingebrigt (Journal article; Peer reviewed, 2017)In many Norwegian rivers, spawning stocks are surveyed for escaped farmed salmon with surveillance fishing by rod and reel after the recreational angling season. However, the benefits of surveillance fishing depend on the ... -
Bioenergetic consequences of warming rivers to adult Atlantic salmon Salmo salar during their spawning migration
Lennox, Robert J.; Eliason, Erika J.; Havn, Torgeir Børresen; Johansen, Martin Rognli; Thorstad, Eva Bonsak; Cooke, Steven J.; Diserud, Ola Håvard; Whoriskey, Frederick G.; Farrell, Anthony P.; Uglem, Ingebrigt (Journal article; Peer reviewed, 2018)1. Climate change poses a challenge to wild fishes, yet little is known about the behavioural use and metabolic consequences of thermally heterogeneous water encountered by wild salmon during their energetically demanding ... -
Commercial gillnetting is more stressful for saithe (Pollachius virens L.) than jigging: but is fillet quality affected?
Uglem, Ingebrigt; Toledo-Guedes, Kilian; Ulvan, Eva Marita (Journal article; Peer reviewed, 2016)Various fish capture methods, which involve different levels of pre-slaughter stress/welfare, could influence the final quality of marketed fish. In this study, living saithe (Pollachius virens L.), caught during realistic ... -
Does Catch-and-Release Angling Alter the Behavior and Fate of Adult Atlantic Salmon During Upriver Migration?
Lennox, Robert J.; Uglem, Ingebrigt; Cooke, Steven J.; Næsje, Tor; Whoriskey, Frederick G.; Havn, Torgeir Børresen; Ulvan, Eva Marita; Solem, Øyvind; Thorstad, Eva Bonsak (Journal article; Peer reviewed, 2015)To reproduce, Atlantic Salmon Salmo salar return to freshwater rivers and migrate upriver to spawning areas. This migration is the basis for recreational fisheries, which for conservation reasons are increasingly characterized ... -
Effects of salmon lice infection on the behaviour of sea trout in the marine phase
Gjelland, Karl Øystein; Serra-Llinares, Rosa Maria; Hedger, Richard David; Arechavala-Lopez, Pablo; Nilsen, Rune; Finstad, Bengt; Uglem, Ingebrigt; Skilbrei, Ove Tommy; Bjørn, Pål Arne (Peer reviewed, 2014)Salmon lice Lepeophtheirus salmonis Krøyer may affect survival and growth of anadromous salmonids through physiological stress and/or behavioural changes. Using acoustic telemetry tracking, we investigated the behaviour ... -
Effects of salmon lice Lepeophtheirus salmonis on wild sea trout Salmo trutta—a literature review
Thorstad, Eva Bonsak; Todd, Christopher D.; Uglem, Ingebrigt; Bjørn, Pål Arne; Gargan, Patrick G.; Vollset, Knut Wiik; Halttunen, Elina; Kålås, Steinar; Berg, Marius; Finstad, Bengt (Peer reviewed; Journal article, 2015)Salmon farming increases the abundance of salmon lice, which are ectoparasites of salmonids in the sea. Here we review the current knowledge on the effects of salmon lice on wild sea trout. Salmon lice feed on host mucus, ... -
Heart rate and swimming activity as stress indicators for Atlantic salmon (Salmo salar)
Svendsen, Eirik; Føre, Martin; Økland, Finn; Gräns, Albin; Hedger, Richard David; Alfredsen, Jo Arve; Uglem, Ingebrigt; Rosten, Carolyn; Frank, Kevin; Erikson, Ulf Gøran; Finstad, Bengt (Peer reviewed; Journal article, 2020)We investigated the relationship between telemetry measurements of heart rate and swimming activity and the physiological status in farmed Atlantic salmon (Salmo salar) to assess the potential to use telemetry measurements ... -
Impacts of wild fishes attracted to open-cage salmonid farms in Norway
Uglem, Ingebrigt; Karlsen, Ørjan; Sánchez-Jerez, Pablo; Sæther, Bjørn-Steinar (Journal article; Peer reviewed, 2014)Salmonid farming affects both the environment and other industries, with impacts of wild fish attracted to fish farms being a major concern. Here, we summarized existing knowledge on the impacts of such aggregations around ... -
In situ measurement of salinity during seaward migration of Atlantic salmon post‑smolts using acoustic transmitters with data‑storage capabilities and conventional acoustic transmitters
Mitamura, Hiromichi; Thorstad, Eva Bonsak; Uglem, Ingebrigt; Økland, Finn (Journal article; Peer reviewed, 2017)Background: Development of miniature acoustic transmitters and data-storage tags has provided new insights into ecology of free-ranging aquatic animals. In this study, we used a data-storage-type and a conventional acoustic ... -
Influence of gear switching on recapture of Atlantic salmon (Salmo salar) in catch-and- release fisheries
Lennox, Robert J.; Diserud, Ola Håvard; Cooke, Steven J.; Thorstad, Eva Bonsak; Whoriskey, Frederick G.; Solem, Øyvind; Havn, Torgeir Børresen; Uglem, Ingebrigt (Journal article; Peer reviewed, 2016)Anglers that release Atlantic salmon (Salmo salar) in recreational fisheries do so with the intention that the fish will survive and contribute to succeeding generations. In some instances, salmon that are released may be ... -
Pink salmon in Norway: the reluctant invader
Sandlund, Odd Terje; Berntsen, Henrik Hårdensson; Fiske, Peder; Kuusela, Jorma; Muladal, Rune; Niemelä, Eero; Uglem, Ingebrigt; Forseth, Torbjørn; Mo, Tor Atle; Thorstad, Eva B.; Veselov, Alexey E.; Vollset, Knut Wiik; Zubchenko, Alexander V. (Peer reviewed; Journal article, 2018)In 2017, Norway experienced an invasion of the Pacific salmonid pink salmon (Oncorhynchus gorbuscha) in numbers never before seen in rivers all along the coast. Significant numbers were also caught in other parts of ... -
The pink salmon invasion: a Norwegian perspective
Mo, Tor Atle; Thorstad, Eva Bonsak; Sandlund, Odd Terje; Berntsen, Johan Henrik Hårdensson; Fiske, Peder; Uglem, Ingebrigt (Peer reviewed; Journal article, 2018)In the period 1956–1979, more than 220 million of pink salmon Oncorhynchus gorbuscha (Walbaum 1792) eggs from the southern part of Sakhalin Island in the Pacific Ocean were transported to the northwestern part of Russia ... -
Site description and planned environmental monitoring of the Prinos CCS site within the COREu project
Beaubien, Stan E.; Bigi, Sabina; Georgakopoulos, Andreas; Järnegren, Johanna; Kiomourtzi, Paschalia; Kiratzi, Anastasia; Ktenidou, Olga-Joan; Μihalopoulos, Nikos; Uglem, Ingebrigt (Journal article, 2024)COREu is a pioneering Carbon Capture and Storage (CCS) project funded by the European Community that aims to demonstrate key technologies across the entire value chain at study sites in southern and central Europe. As the ... -
Spatiotemporal Variations in Trace Element Compositions in Pollock Populations under the Influence of Coastal Norwegian Salmon Farms
Fourdain, Linda; Arechavala-Lopez, Pablo; Uglem, Ingebrigt; Sæther, Bjørn-Steinar; Sanchez-Jerez, Pablo (Peer reviewed; Journal article, 2022)Pollock Pollachius virens (also known as Saithe) modify their feeding habits when including in their diet uneaten feed pellets from salmon aquaculture sea cages. To determine the influence of salmon farms on Pollock, ... -
Statistical and ecological challenges of monitoring parasitic salmon lice infestations in wild salmonid fish stocks
Helland, Ingeborg Palm; Uglem, Ingebrigt; Jansen, Peder A; Diserud, Ola Håvard; Bjørn, Pål Arne; Finstad, Bengt (Peer reviewed; Journal article, 2015)Ecological monitoring programmes should provide precise data to inform management, but the data quality is often limited by methodological challenges and the need for cost-effective sampling. Parasite infestations are ... -
The effect of catch-and-release angling at high water temperatures on behaviour and survival of Atlantic salmon Salmo salar during spawning migration
Havn, Torgeir Børresen; Uglem, Ingebrigt; Solem, Øyvind; Cooke, Steven J.; Whoriskey, Frederick G.; Thorstad, Eva Bonsak (Journal article; Peer reviewed, 2015)In this study, behaviour and survival following catch-and-release (C&R) angling was investigated in wild Atlantic salmon Salmo salar (n = 75) angled on sport fishing gear in the River Otra in southern Norway at water ... -
The risk of individual fish being captured multiple times in a catch and release fishery
Thorstad, Eva B.; Diserud, Ola Håvard; Solem, Øyvind; Havn, Torgeir Børresen; Bjørum, Lars Rasmus Oftedal; Kristensen, Torstein; Urke, Henning Andre; Johansen, Martin Rognli; Lennox, Robert J.; Fiske, Peder; Uglem, Ingebrigt (Peer reviewed; Journal article, 2019)The proportion of angled Atlantic salmon Salmo salar L. being caught and released has increased. If individuals are repeatedly captured, this may have fish welfare consequences. Of 995 Atlantic salmon tagged during catch ... -
Use of simulation approaches to evaluate the consequences of catch-and-release angling on the migration behaviour of adult Atlantic salmon (Salmo salar)
Lennox, Robert J.; Cooke, Steven J.; Diserud, Ola Håvard; Havn, Torgeir Børresen; Johansen, Martin R.; Thorstad, Eva Bonsak; Whoriskey, Frederick G.; Uglem, Ingebrigt (Journal article; Peer reviewed, 2016)Given most Atlantic salmon (Salmo salar) released by anglers survive (proportion = 0.97 in this study), eco-nomically and culturally important recreational Atlantic salmon fisheries are increasingly incorporatingcatch-and-release. ... -
Variations in coastal fish species composition captured by traps in Romsdalsfjord, Western Norway
Arechavala-Lopez, Pablo; Berg, Marius; Uglem, Ingebrigt; Bjørn, Pål Arne; Finstad, Bengt (Peer reviewed; Journal article, 2016)Fish traps are widely used in Norwegian fjords, especially those designed for monitoring salmonid populations in the marine environment, although many other marine fish species are also captured. The composition and ...