Search Results - "STEFANSSON, S"

Long-term effects of photoperiod, temperature and their interaction on growth, gill Na+, K+-ATPase activity, seawater tolerance and plasma growth-hormone levels in Atlantic salmon Salmo salar by Handeland, S. O., Imsland, A. K., Björnsson, B. Th, Stefansson, S. O.

“…This study was undertaken to examine the long‐term effects of photoperiod, temperature and their interaction on growth, gill Na+,K+‐ATPase (NKA) activity,…”
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The influence of genetic drift and selection on quantitative traits in a plant pathogenic fungus by Stefansson, Tryggvi S, McDonald, Bruce A, Willi, Yvonne

“…Genetic drift and selection are ubiquitous evolutionary forces acting to shape genetic variation in populations. While their relative importance has been well…”
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Branchial expression patterns of claudin isoforms in Atlantic salmon during seawater acclimation and smoltification by Tipsmark, C K, Kiilerich, P, Nilsen, T O, Ebbesson, L O E, Stefansson, S O, Madsen, S S

“…In euryhaline teleosts, permeability changes in gill epithelia are essential during acclimation to changed salinity. This study examined expression patterns of…”
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Growth and Smoltification of Three Norwegian Strains of Atlantic Salmon Salmo salar Reared under Different Thermal Regimes by Imsland, A. K., Pettersen, K., Stefansson, S. O.

“…A comparative study was performed with juvenile Atlantic salmon Salmo salar from three stocks in Western Norway that differ in their natural conditions. One is…”
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Atlantic salmon post-smolts adapted for a longer time to seawater develop an effective humoral and cellular immune response against Salmonid alphavirus by Nuñez-Ortiz, N., Moore, L.J., Jarungsriapisit, J., Nilsen, T.O., Stefansson, S., Morton, H.C., Taranger, G.L., Secombes, C.J., Patel, S.

“…Salmonid alphavirus (SAV) causes pancreas disease (PD) in Atlantic salmon (Salmo salar L.) and disease outbreaks are mainly detected after seawater transfer…”
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Development of intestinal ion-transporting mechanisms during smoltification and seawater acclimation in Atlantic salmon Salmo salar by Sundh, H., Nilsen, T. O., Lindström, J., Hasselberg-Frank, L., Stefansson, S. O., McCormick, S. D., Sundell, K.

“…This study investigated the expression of ion transporters involved in intestinal fluid absorption and presents evidence for developmental changes in abundance…”
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MOBILE‐izing Adolescent Sexual and Reproductive Health Care: A Pilot Study Using a Mobile Health Unit in Chicago by Stefansson, Lilja S., Webb, M. Elizabeth, Hebert, Luciana E., Masinter, Lisa, Gilliam, Melissa L.

“…ABSTRACT BACKGROUND Adolescents experience numerous barriers to obtaining sexual and reproductive health care (SRHC). Mobile Health Units (MHUs) can remove…”
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Aluminum exposure impacts brain plasticity and behavior in Atlantic salmon (Salmo salar) by Grassie, C, Braithwaite, V A, Nilsson, J, Nilsen, T O, Teien, H-C, Handeland, S O, Stefansson, S O, Tronci, V, Gorissen, M, Flik, G, Ebbesson, L O E

“…Aluminum (Al) toxicity occurs frequently in natural aquatic ecosystems as a result of acid deposition and natural weathering processes. Detrimental effects of…”
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assay for quantitative virulence in Rhynchosporium commune reveals an association between effector genotype and virulence by Stefansson, T. S, Willi, Y, Croll, D, McDonald, B. A

“…Detailed knowledge of the evolutionary genetics of virulence is needed to understand and predict host–pathogen dynamics. This study used a virulence assay…”
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Immune gene profiles in Atlantic salmon (salmo salar L.) post-smolts infected with SAV3 by bath-challenge show a delayed response and lower levels of gene transcription compared to injected fish by Moore, L.J., Jarungsriapisit, J., Nilsen, T.O., Stefansson, S., Taranger, G.L., Secombes, C.J., Morton, H.C., Patel, S.

“…Salmonid alphavirus (SAV) causes pancreatic disease (PD) in salmonids in Northern Europe which results in large economic losses within the aquaculture…”
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Atlantic salmon (Salmo salar L.) post-smolts challenged two or nine weeks after seawater-transfer show differences in their susceptibility to salmonid alphavirus subtype 3 (SAV3) by Jarungsriapisit, J, Moore, L J, Taranger, G L, Nilsen, T O, Morton, H C, Fiksdal, I U, Stefansson, S, Fjelldal, P G, Evensen, Ø, Patel, S

“…Pancreas disease (PD), caused by salmonid alphavirus (SAV), is an important disease affecting salmonid aquaculture. It has been speculated that Atlantic salmon…”
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Atlantic salmon adapted to seawater for 9 weeks develop a robust immune response to salmonid alphavirus upon bath challenge by Moore, L.J., Jarungsriapisit, J., Nilsen, T.O., Stefansson, S., Taranger, G.L., Secombes, C.J., Morton, H.C., Patel, S.

“…Pancreas disease (PD) caused by salmonid alphavirus (SAV) is the most serious viral disease in Norwegian aquaculture. Study of the immune response to SAV will…”
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Osmoregulation in Atlantic salmon Salmo salar smolts transferred to seawater at different temperatures by Handeland, S. O., Imsland, A. K., Nilsen, T. O., Ebbesson, L. O. E., Hosfeld, C. D., Pedrosa, C., Toften, H., Stefansson, S. O.

“…In order to investigate how changes in gill Na+, K+‐ATPase (NKA) α1a and α1b subunits, Na+, K+, 2Cl− co‐transporter (NKCC1) and the apical cystic fibrosis…”
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The influence of first-feeding diet on the Atlantic cod Gadus morhua phenotype: survival, development and long-term consequences for growth by Koedijk, R. M., Folkvord, A., Foss, A., Pittman, K., Stefansson, S. O., Handeland, S., Imsland, A. K.

“…Atlantic cod Gadus morhua larvae reached four‐fold (at low larval density) to 11 fold higher body mass (high larval density) at 50 days post hatch (dph) when…”
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Physiology during smoltification in Atlantic salmon: effect of melatonin implants by Handeland, S. O, Imsland, A. K, Björnsson, B. Th, Stefansson, S. O, Porter, M

“…Melatonin implants were used to override natural melatonin rhythm in groups of juvenile Atlantic salmon, Salmo salar, raised at simulated natural photoperiod…”
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Seawater adaptation and growth of post-smolt Atlantic salmon ( Salmo salar) of wild and farmed strains by Handeland, S.O., Björnsson, Arnesen, A.M., Stefansson, S.O.

“…Atlantic salmon smolts ( Salmo salar L.) of wild (Namsen) and farmed (AquaGen) strains were transferred to full-strength seawater (33‰) for 0 (initial control…”
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Corticotropin-Releasing Factor Neurogenesis during Midlife Development in Salmon: Genetic, Environmental and Thyroid Hormone Regulation by Ebbesson, L. O. E., Nilsen, T. O., Helvik, J. V., Tronci, V., Stefansson, S. O.

“…Salmon parr–smolt transformation (smoltification) is a mid‐life transitional stage between life in freshwater and seawater that entails a wide range of neural,…”
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Seawater tolerance and post-smolt migration of wild Atlantic salmon Salmo salar× brown trout S. trutta hybrid smolts by Urke, H. A., Kristensen, T., Arnekleiv, J. V., Haugen, T. O., Kjærstad, G., Stefansson, S. O., Ebbesson, L. O. E., Nilsen, T. O.

“…High levels of hybridization between Atlantic salmon Salmo salar and brown trout Salmo trutta have been reported in the River Driva. This study presents the…”
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Temperature influence on the development and loss of seawater tolerance in two fast-growing strains of Atlantic salmon by Handeland, S.O, Wilkinson, E, Sveinsbø, B, McCormick, S.D, Stefansson, S.O

“…Development of hypo-osmoregulatory ability, gill Na +,K +-ATPase activity, condition factor and growth in Atlantic salmon during parr–smolt transformation was…”
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Influence of sea temperature and initial marine feeding on survival of Atlantic salmon Salmo salar post-smolts from the Rivers Orkla and Hals, Norway by Hvidsten, N. A., Jensen, A. J., Rikardsen, A. H., Finstad, B., Aure, J., Stefansson, S., Fiske, P., Johnsen, B. O.

“…The abundance of returning adult Atlantic salmon Salmo salar, in the River Orkla in mid‐norway (1 sea‐winter, SW, fish) and River Hals in north Norway (1–3 SW…”
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