Blar i Publikasjoner fra CRIStin på forfatter "Dahle, Geir"
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A rare observation of Atlantic halibut larvae (Hippoglossus hippoglossus) in Skjerstadfjorden, North Norway.
van der Meeren, Terje; Dahle, Geir; Paulsen, Ole Ingar (Journal article; Peer reviewed, 2013-06-28)Four larvae of Atlantic halibut (Hippoglossus hippoglossus) were collected during a larval survey for Atlantic cod (Gadus morhua) in true inshore and shallow locations in the Norwegian fjord system Skjerstadfjorden. This ... -
Analysis of coastal cod (Gadus morhua L.) sampled on spawning sites reveals a genetic gradient throughout Norway's coastline
Dahle, Geir; Quintela, María; Johansen, Torild; Westgaard, Jon-Ivar; Besnier, Francois; Aglen, Asgeir; Jørstad, Knut Eirik; Glover, Kevin (Journal article; Peer reviewed, 2018)Atlantic cod (Gadus morhua L.) has formed the basis of many economically significant fisheries in the North Atlantic, and is one of the best studied marine fishes, but a legacy of overexploitation has depleted populations ... -
Assessment of Fish Spawning in the North Sea; Final Project Report of KINO-2, 2017–2021
Krafft, Bjørn Arne; Mateos-Rivera, Alejandro; Mozfar, Bahar; Skern-Mauritzen, Rasmus; Dahle, Geir; Sundby, Svein; Thorsen, Anders; Asplin, Lars; Wehde, Henning (Rapport fra havforskningen;2021 - 17, Research report, 2021)Increased and updated knowledge of reproductive strategies of fish is crucial to optimize the temporal and spatial planning for conducting seismic surveys; in order to reduce its potential negative ecosystems impacts. The ... -
Atlantic salmon populations reveal adaptive divergence of immune related genes - A duplicated genome under selection
Kjærner-Semb, Erik Nordtorp; Ayllon, Fernando; Furmanek, Tomasz; Wennevik, Vidar; Dahle, Geir; Niemelä, Eero; Ozerov, Mikhail; Vähä, Juha-Pekka; Glover, Kevin; Rubin, Carl J.; Wargelius, Anna; Edvardsen, Rolf (Journal article, 2016) -
Attraction of cod Gadus morhua from coastal spawning grounds to salmon farms
Skjæraasen, Jon Egil; Karlsen, Ørjan; Langangen, Øystein Ole Gahr; Meier, Sonnich; Dunlop, Katherine Mary; van der Meeren, Terje; Keeley, Nigel B.; Myksvoll, Mari Skuggedal; Dahle, Geir; Moland, Even; Nilsen, Rune; Elvik, Kristine Marit Schrøder; Bannister, Raymond; Olsen, Esben Moland (Peer reviewed; Journal article, 2022)Wild fish aggregate at aquaculture net-pens, but the underlying mechanisms are not fully understood. This study examined how salmon farms attract coastal Atlantic cod Gadus morhua from their inshore spawning grounds. ... -
Attraction of cod Gadus morhua from coastal spawning grounds to salmon farms
Skjæraasen, Jon Egil; Karlsen, Ørjan; Langangen, Øystein Ole Gahr; Meier, Sonnich; Dunlop, Katherine Mary; van der Meeren, Terje; Keeley, Nigel B.; Myksvoll, Mari Skuggedal; Dahle, Geir; Moland, Even; Nilsen, Rune; Elvik, Kristine Marit Schrøder; Bannister, Raymond; Olsen, Esben Moland (Peer reviewed; Journal article, 2022)Wild fish aggregate at aquaculture net-pens, but the underlying mechanisms are not fully understood. This study examined how salmon farms attract coastal Atlantic cod Gadus morhua from their inshore spawning grounds. ... -
“A cleaner break”: Genetic divergence between geographic groups and sympatric phenotypes revealed in ballan wrasse (Labrus bergylta)
Seljestad, Gaute; Sanchez, Maria Quintela; Faust, Ellika; Halvorsen, Kim Aleksander Tallaksen; Besnier, Francois; Jansson, Eeva; Dahle, Geir; Knutsen, Halvor; André, Carl; Folkvord, Arild; Glover, Kevin (Peer reviewed; Journal article, 2020)Capture and long‐distance translocation of cleaner fish to control lice infestations on marine salmonid farms has the potential to influence wild populations via overexploitation in source regions, and introgression in ... -
Comparison of visual and molecular taxonomic methods to identify ichthyoplankton in the North Sea
Mateos-Rivera, Alejandro; Skern-Mauritzen, Rasmus; Dahle, Geir; Sundby, Svein; Mozfar, Bahar; Thorsen, Anders; Wehde, Henning; Krafft, Bjørn Arne (Peer reviewed; Journal article, 2020)The North Sea is an important spawning and nursery ground for many demersal and pelagic fishes whose spawning areas are largely overlapping in time and space. This makes ichthyoplankton visual identification from the various ... -
Ecological adaptation in Atlantic herring is associated with large shifts in allele frequencies at hundreds of loci
Han, Fan; Jamsandekar, Minal; Pettersson, Mats; Su, Leyi; Fuentes-Pardo, Angela P.; Davis, Brian W.; Bekkevold, Dorte; Berg, Florian; Casini, Michele; Dahle, Geir; Farrell, Edward D.; Folkvord, Arild; Andersson, Leif (Peer reviewed; Journal article, 2020)Atlantic herring is widespread in North Atlantic and adjacent waters and is one of the most abundant vertebrates on earth. This species is well suited to explore genetic adaptation due to minute genetic differentiation at ... -
Epistatic regulation of growth in Atlantic salmon revealed: a QTL study performed on the domesticated-wild interface
Besnier, Francois; Solberg, Monica Favnebøe; Harvey, Alison C.; Carvalho, Gary R.; Bekkevold, Dorte; Taylor, Martin I.; Creer, Simon; Nielsen, Einar Eg; Skaala, Øystein; Ayllon, Fernando; Dahle, Geir; Glover, Kevin (Peer reviewed; Journal article, 2020)Quantitative traits are typically considered to be under additive genetic control. Although there are indications that non-additive factors have the potential to contribute to trait variation, experimental demonstration ... -
Genetic analysis of goldsinny wrasse reveals evolutionary insights into population connectivity and potentialevidence of inadverent translocationvia aquaculture.
Jansson, Eeva; Sanchez, Maria Quintela; Dahle, Geir; Albretsen, Jon; Knutsen, Halvor; André, Carl; Strand, Åsa; Mortensen, Stein; Taggart, John B.; Karlsbakk, Egil; Kvamme, Bjørn Olav; Glover, Kevin (Peer reviewed; Journal article, 2017) -
Genetic analysis redraws the management boundaries for the European sprat
Sanchez, Maria Quintela; Kvamme, Cecilie; Bekkevold, Dorte; Nash, Richard David Marriott; Jansson, Eeva; Sørvik, Anne Grete Eide; Taggart, John B.; Skaala, Øystein; Dahle, Geir; Glover, Kevin (Peer reviewed; Journal article, 2020)Sustainable fisheries management requires detailed knowledge of population genetic structure. The European sprat is an important commercial fish distributed from Morocco to the Arctic circle, Baltic, Mediterranean, and ... -
Genetic management of mixed-stock fisheries "real-time": The case of the largest remaining cod fishery operating in the Atlantic in 2007-2017
Dahle, Geir; Johansen, Torild; Westgaard, Jon-Ivar; Aglen, Asgeir; Glover, Kevin (Journal article; Peer reviewed, 2018)Fish stocks represent fundamental units in fisheries management, and their identification, especially in mixed-fisheries, represents one of the primary challenges to sustainable harvest. Here, we describe the first “real-time” ... -
Genetic response to human-induced habitat changes in the marine environment: A century of evolution of European sprat in Landvikvannet, Norway
Sanchez, Maria Quintela; Richter-Boix, Alex; Bekkevold, Dorte; Kvamme, Cecilie; Berg, Florian; Jansson, Eeva; Dahle, Geir; Besnier, Francois; Nash, Richard David Marriott; Glover, Kevin Alan (Peer reviewed; Journal article, 2021)Habitat changes represent one of the five most pervasive threats to biodiversity. However, anthropogenic activities also have the capacity to create novel niche spaces to which species respond differently. In 1880, one ... -
Genetiske analyser av aure i Gloppenelva
Quintela, Maria; Sægrov, Harald; Dahle, Geir; Glover, Kevin Alan; Wennevik, Vidar (Rapport fra havforskningen;2023 - 19, Research report, 2023)I Gloppenelva ble det åpnet en laksetrapp i Eidsfossen i 1972, men trappen ble stengt i 2014 etter store skader under en flomhendelse, og det er ikke avklart om trappen skal restaureres. Inntil 1972 var Eidsfossen ... -
Genome wide analysis reveals genetic divergence between Goldsinny wrasse populations
Jansson, Eeva; Besnier, Francois; Malde, Ketil; André, Carl; Dahle, Geir; Glover, Kevin (Peer reviewed; Journal article, 2020)Marine fish populations are often characterized by high levels of gene flow and correspondingly low genetic divergence. This presents a challenge to define management units. Goldsinny wrasse (Ctenolabrus rupestris) is a ... -
Genomic analysis reveals neutral and adaptive patterns that challenge the current management regime for East Atlantic cod Gadus morhua L
Johansen, Torild; Besnier, Francois; Sanchez, Maria Quintela; Jorde, Per Erik; Glover, Kevin; Westgaard, Jon-Ivar; Dahle, Geir; Lien, Sigbjørn; Kent, Matthew Peter (Peer reviewed; Journal article, 2020)Challenging long‐held perceptions of fish management units can help to protect vulnerable stocks. When a fishery consisting of multiple genetic stocks is managed as a single unit, overexploitation and depletion of minor ... -
Geographic variation in gene flow from a genetically distinct migratory ecotype drives population genetic structure of coastal Atlantic cod (Gadus morhua L.)
Seliussen, Bjørghild Breistein; Dahle, Geir; Johansen, Torild; Besnier, Francois; Quintela, Maria; Jorde, Per Erik; Knutsen, Halvor; Westgaard, Jon-Ivar; Nedreaas, Kjell Harald; Farestveit, Eva; Glover, Kevin Alan (Peer reviewed; Journal article, 2022)Identifying how physical and biotic factors shape genetic connectivity among populations in time and space is essential to our understanding of the evolutionary trajectory as well as the management of marine species. ... -
Global, regional, and cryptic population structure in a high gene-flow transatlantic fish
Jansson, Eeva; Faust, Ellika; Bekkevold, Dorte; Quintela, Maria; Durif, Caroline; Halvorsen, Kim Aleksander Tallaksen; Dahle, Geir; Pampoulie, Christophe; Kennedy, James; Whittaker, Benjamin; Unneland, Laila; Post, Søren; André, Carl; Glover, Kevin Alan (Peer reviewed; Journal article, 2023)Lumpfish (Cyclopterus lumpus) is a transatlantic marine fish displaying large population sizes and a high potential for dispersal and gene-flow. These features are expected to result in weak population structure. Here, we ... -
Going With the Flow – Population Genetics of the Kelp Saccharina latissima (Phaeophyceae, Laminariales)
Ribeiro, Pedro A; Næss, Tonje; Dahle, Geir; Asplin, Lars; Meland, Kenneth; Fredriksen, Stein; Sjøtun, Kjersti (Peer reviewed; Journal article, 2022)Saccharina latissima is the most important habitat-forming kelp in sheltered areas of North-Atlantic, and there is also an increasing interest in cultivation and utilization of S. latissima. The cultivation activity may ...