Blar i Brage IMR på forfatter "Dahle, Geir"
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Genetic diversity within and among Atlantic cod (Gadus morhua) farmed in marine cages: a proof-of-concept study for the identification of escapees
Glover, Kevin A.; Dahle, Geir; Westgaard, Jon-Ivar; Johansen, Torild; Knutsen, Halvor; Jørstad, Knut Eirik (Journal article; Peer reviewed, 2010-03-23)This study presents a molecular genetic characterization of Atlantic cod reared in commercial marine farms. Samples consisted of approximately 47 fish collected from nine cages located on four farms throughout Norway. In ... -
Genetic investigation of population structure in Atlantic chub mackerel, Scomber colias Gmelin, 1789 along the West African coast
Sbiba, Salaheddine; Quintela, Maria; Øyro, Johanne; Dahle, Geir; Jurado-Ruzafa, Alba; Iita, Kashona Theopolina; Nikolioudakis, Nikolaos; Chlaida, Malika; (Dataset, 2023)Scomber colias is an ecologically and economically valuable species, which is targeted by industrial and artisanal fisheries throughout its geographical distribution. Some 1,492 fish were collected by trawl onboard the ... -
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 ... -
Genetics in the ocean’s twilight zone: Population structure of the glacier lanternfish across its distribution range
Quintela, Maria; Garcia-Seoane, Eva; Dahle, Geir; Klevjer, Thor A.; Melle, Webjørn; Lille-Langøy, Roger; Besnier, Francois; Tsagarakis, Konstantinos; Geoffroy, Maxime; Rodríguez-Ezpeleta, Naiara; Jacobsen, Eugenie; Côté, David; Knutar, Sofie; Unneland, Laila; Strand, Espen; Glover, Kevin (Dataset, 2024)Dataset for "Genetics in the ocean’s twilight zone: Population structure of the glacier lanternfish across its distribution range", published in Evolutionary Applications, a Wiley journal The information deposited ... -
Genetikk-ekspressen
Dahle, Geir (Havforskningsnytt, Working paper, 2005) -
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 ... -
Genetiske metoder for bestandsidentifisering - potensial og praktisk bruk for forvaltningen
Dahle, Geir; Jørstad, Knut Eirik; Glover, Kevin A.; Skaala, Øystein; Svåsand, Terje (Fisken og havet, Research report, 2006)There is an increasing demand for management based on surveillance and ecosystem knowledge, requiring more scientific data, and molecular genetic methods have been highlighted as the best tool to increase our knowledge ... -
Genetiske studier av torsk i Skjerstadfjorden, Nordland
Dahle, Geir; van der Meeren, Terje (Rapport fra Havforskningen;Nr. 20-2014, Working paper, 2014)Havforskningsinstituttet fikk høsten 2010 i oppdrag fra Fiskeridirektoratet å gjennomføre en omfattende utredning av oppdrettet torsk sin innflytelse på vill torsk for å vurdere mulige effektindikatorer i forbindelse med ... -
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 ... -
Genteknologi gir effektive vaksiner
Dahle, Geir (Havforskningsnytt, Working paper, 1997) -
Genteknologi styrker ressursforvaltninga
Dahle, Geir (Havforskningsnytt, Working paper, 1997) -
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. ... -
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; Sanchez, Maria Quintela; Jorde, Per Erik; Knutsen, Halvor; Westgaard, Jon-Ivar; Nedreaas, Kjell; Farestveit, Eva; Glover, Kevin (Dataset, 2022)This is the final dataset used in the Breistein et al. (in review) study “Geographic variation in gene-flow from a genetically distinct migratory ecotype drives population genetic structure of coastal Atlantic cod (Gadus ... -
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 ... -
Going With the Flow – Population Genetics of the Kelp Saccharina latissima (Phaeophyceae, Laminariales)
Ribeiro, Pedro Miguel de Azevedo; 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 ... -
Havbruksrapport 1996
Dahle, Geir (Fisken og havet, særnummer;3-1996, Research report, 1996-03) -
High prevalence of viral haemorrhagic septicaemia virus (VHSV) in Norwegian spring‑spawning herring
Johansen, Renate; Bergh, Øivind; Modahl, Ingebjørg; Dahle, Geir; Gjerset, Britt; Holst, Jens Christian; Sandlund, Nina (Journal article; Peer reviewed, 2013-03-25)Viral haemorrhagic septicaemia (VHS) is a viral disease known to cause high mortality in many teleost species, both in wild and farmed populations. The effects of this virus infection on the population dynamics of Atlantic ...