Blar i Brage IMR på forfatter "Oldham, Tina Marie Wier"
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Adaptive photoperiod interpretation modulates phenological timing in Atlantic salmon
Oldham, Tina Marie Wier; Oppedal, Frode; Fjelldal, Per Gunnar; Hansen, Tom Johnny (Peer reviewed; Journal article, 2023)Photoperiod, the portion of 24-h cycle during which an organism is exposed to illumination, is an important phenological cue in many animals. However, despite its influence on critical biological processes, there remain ... -
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 (Peer reviewed; Journal article, 2023)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 ... -
Cyclic hypoxia exposure accelerates the progression of amoebic gill disease
Oldham, Tina Marie Wier; Dempster, Tim; Crosbie, Phil; Adams, Mark; Nowak, Barbara (Peer reviewed; Journal article, 2020)Amoebic gill disease (AGD), caused by the amoeba Neoparamoeba perurans, has led to considerable economic losses in every major Atlantic salmon producing country, and is increasing in frequency. The most serious infections ... -
Declining size-at-harvest in Norwegian salmon aquaculture: Lice, disease, and the role of stunboats
Barrett, LukeT.; Oldham, Tina Marie Wier; Kristiansen, Trond; Oppedal, Frode; Stien, Lars Helge (Peer reviewed; Journal article, 2022)Sea cages used for fish farming are typically open to the environment, making the grow-out phase a race against the accumulation of infections. In Norway, farmed Atlantic salmon (Salmo salar) suffer outbreaks of salmon ... -
Environmentally responsive parasite prevention halves salmon louse burden in commercial marine cages
Oldham, Tina Marie Wier; Simensen, Benedicte; Trengereid, Henrik; Oppedal, Frode (Peer reviewed; Journal article, 2023)Though a naturally occurring species throughout the Atlantic, parasitic salmon louse (Lepeophtheirus salmonis) population dynamics are increasingly intertwined with salmonid aquaculture. In contrast to reactive louse ... -
Operculum PIT tagging: a viable alternative to avoid human consumption in processed salmon
Oldham, Tina Marie Wier; Macaulay, Georgia; Stalheim, Malin; Oppedal, Frode (Peer reviewed; Journal article, 2021)Passive integrated transponder (PIT) tags are commonly used to identify individual fish. However, use of PIT tags in commercial aquaculture research is limited by consumer safety concerns. For farmed fish, it is critical ... -
The potential for cleaner fish-driven evolution in the salmon louse Lepeophtheirus salmonis: Genetic or environmental control of pigmentation?
Hamre, Lars Are; Oldham, Tina Marie Wier; Oppedal, Frode; Nilsen, Frank; Glover, Kevin Alan (Peer reviewed; Journal article, 2021)The parasitic salmon louse represents one of the biggest challenges to environmentally sustainable salmonid aquaculture across the globe. This species also displays a high evolutionary potential, as demonstrated by its ... -
Salinity and temperature alter the efficacy of salmon louse prevention
Oldham, Tina Marie Wier (Peer reviewed; Journal article, 2023)Several promising preventive tools and strategies have been developed to combat infestation of salmon in marine cages by parasitic salmon lice. While most of the prevention strategies tested have significantly reduced louse ... -
Summary and status of deep lights and deep feed use in commercial settings: welfare, behaviour and infestation at three case study sites — End report from the FHF projects 901154 “Dypelysogfôring”
Bui, Samantha; Oppedal, Frode; Nilsson, Jonatan; Oldham, Tina Marie Wier; Stien, Lars Helge (Rapport fra havforskningen, Research report, 2019)Infective salmon lice are attracted to light and are therefore more abundant near the surface than deep in the cage. Manipulating salmon swimming depth by the use of deep lights and deep feeding could therefore spatially ...