Results 71 to 80 of about 15,291 (235)

The lake sink in Atlantic salmon smolt downstream migration

Journal of Fish Biology, EarlyView.
Abstract The objective was to estimate the movements and survival of Atlantic salmon smolts migrating downstream through a river–lake system consisting of two large, interconnected lakes (areas 58.2 and 13.2 km2, minimum crossing distance 29 and 16 km).
Jan Heggenes, Eivind Schartum, Torgeir Havn, Finn Økland   +3 more
wiley   +1 more source

Synchrony and multimodality in the timing of Atlantic salmon smolt migration in two Norwegian fjords

Scientific Reports, 2021
The timing of the smolt migration of Atlantic salmon (Salmo salar) is a phenological trait increasingly important to the fitness of this species. Understanding when and how smolts migrate to the sea is crucial to understanding how salmon populations will
Helge B. Bjerck, Henning A. Urke, Thrond O. Haugen, Jo Arve Alfredsen, John Birger Ulvund, Torstein Kristensen   +5 more
doaj   +1 more source

Aerobic scope is sustained through a heatwave in juvenile Atlantic salmon (Salmo salar)

Journal of Fish Biology, EarlyView.
Abstract Aquatic ectotherms are vulnerable to heatwave‐induced physiological stress, which arises from increased energy demands and reduced dissolved oxygen content in warmer waters. Understanding thermal physiology is critical for predicting how commercially and ecologically important populations could be affected by the increasing risk of rising ...
Lucy Cotgrove, Sergey Morozov, Miika Raitakivi, Evan Sala, Jenni M. Prokkola   +4 more
wiley   +1 more source

Empirical analyses of the length, weight, and condition of adult Atlantic salmon on return to the Scottish coast between 1963 and 2006 [PDF]

, 2009
Sea age, size, and condition of adult Atlantic salmon (Salmo salar) are prime determinants of individual, and hence population, productivity. To elucidate potential mechanisms, 151 000 records of salmon returning to six Scottish coastal sites over 44 ...
Atlantic Salmon Trust (Funder), Bacon, P.J., EU FinE (Funder), Gurney, W.S.C., MacLean, J.C., Palmer, S.C.F., Smith, G.W., Whyte, B.D.M., Youngson, A.F.   +8 more
core   +1 more source

Plasma prolactin and cortisol concentrations during salinity challenges of coho salmon (Oncorhynchus kisutch) at smolt and post-smolt stages [PDF]

Aquaculture, 1990
Circulating prolactin (PRL) and/or cortisol were measured in relation to hydromineral balance (internal osmotic pressure or plasma Na+ and K+ ) in smolt or post-smolt coho salmon (Oncorhynthus kisutch) to evaluate effects of salinity challenges. Freshwater (FW) challenge of seawater (SW)- adapted fish resulted in a peak of circulating PRL concentration
Avella, M., Young, G., Prunet, Patrick, Schreck, C.B.   +3 more
openaire   +4 more sources

Rapid increase in abundance and distribution of invasive pink salmon (Oncorhynchus gorbuscha) within a diverse, large Barents Sea catchment

Journal of Fish Biology, EarlyView.
Abstract Pink salmon originate from the North Pacific area but were introduced into northwest Russia from the late 1950s onwards. Since 2017, the alien species has increased dramatically in abundance and rapidly invaded adjacent areas of the North Atlantic region.
Jaakko Erkinaro, Panu Orell, Frode Fossøy, Mikko Kytökorpi, Karl Gjelland, Narve Johansen, Sigurd Domaas, Jorma Kuusela, Pierre Fagard, Eirik Frøiland, Morten Falkegård   +10 more
wiley   +1 more source

Atlantic salmon survival during different life-stages: time to focus on improving marine survival to slow population declines

Frontiers in Ecology and Evolution
Over the last five decades, the Atlantic salmon Salmo salar has suffered marked population declines across its distribution, attributed inter alia to overfishing, barriers to migration, climate change, aquaculture, and pollution.
Sophie A. M. Elliott, Sophie A. M. Elliott, Sophie A. M. Elliott, Nicholas J. Aebischer, Jonathan P. Gillson, Kjell R. Utne, William A. Beaumont, William A. Beaumont, Keerthan Boraiah, Keerthan Boraiah, Dylan E. Roberts, Dylan E. Roberts   +11 more
doaj   +1 more source

Atlantic salmon (Salmo salar L.) kelt rheotaxis and position choice are influenced by flow velocity and turbulence in a regulated river

Journal of Fish Biology, EarlyView.
Abstract The migratory behaviour of Atlantic salmon kelts is poorly understood. Due to the Atlantic salmon's considerable socio‐economic and ecological importance, their precipitous population abundance declines, and the population resilience potential of salmon kelts, addressing these knowledge gaps is important.
Olivia Meredith Simmons, David Aldvén, Patrik Andreasson, Henrik Baktoft, Olle Calles, Ola Diserud, Torbjørn Forseth, Karl Gjelland, Stephanie Müller, Finn Økland, Ana Teixeira da Silva   +10 more
wiley   +1 more source

Use of biological reference points for the conservation of atlantic salmon (Salmo salar L.)in the River Lune, North West England. [PDF]

, 2005
This paper deals with the development and use of biological reference points for salmon conservation on the River Lune, England. The Lune supports recreational and net fisheries with annual catches in the region of 1,000 and 1356 salmon respectively ...
Aprahamian, M.W., Shields, B., Wyatt, R.
core  

Developing a conceptual model of marine farming in New Zealand [PDF]

, 2009
Survey and Geographic Information System (GIS) data analysis describes the relative influence of biophysical and human variables on site choices made by marine farmers in New Zealand.
Brabyn, Lars, Rennie, Hamish Gordon, White, Roger   +2 more
core   +2 more sources