Browsing Institutt for biovitenskap by Author "Dahle, Geir"

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  • “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 (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 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 ...
  • 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 (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 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. ...
  • 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 (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 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 ...
  • Impact of salmon farming on Atlantic cod spatio-temporal reproductive dynamics 
    Skjæraasen, Jon Egil; Karlsen, Ørjan; Langangen, Øystein Ole Gahr; 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 (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Salmon farming in marine net pens is a major activity in many temperate regions. This industry may affect coastal ecosystems in several ways, such as with waste pollution and parasite spillover. Less is known about the ...
  • Population structure in Atlantic cod in the eastern North Sea-Skagerrak-Kattegat: early life stage dispersal and adult migration 
    André, Carl; Svedäng, Henrik; Knutsen, Halvor; Dahle, Geir; Jonsson, Patrik; Ring, Anna-Karin; Sköld, Mattias; Jorde, Per E (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    Background In marine fish species, where pelagic egg and larvae drift with ocean currents, population structure has been suggested to be maintained by larval retention due to hydrographic structuring and ...