Results 71 to 80 of about 15,113 (211)

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

Quantifying the effects of post-surgery recovery time on the migration dynamics and survival rates in the wild of acoustically tagged Atlantic Salmon Salmo salar smolts

Animal Biotelemetry, 2021
Background The experimental effects of surgically implanting fish with acoustic transmitters are likely to have negative effects on survival and behaviour.
J. Daniels, E. B. Brunsdon, G. Chaput, H. J. Dixon, H. Labadie, J. W. Carr   +5 more
doaj   +1 more source

Production of single-domain magnetite throughout life by sockeye salmon, Oncorhynchus nerka [PDF]

, 1988
Although single-domain particles of biogenic magnetite have been found in different species of pelagic fishes, nothing is known about when it is synthesized, or about whether the time during life when it is produced is correlated with the development of
Groot, Cornelis, Kirschvink, Joseph L., Quinn, Thomas P., Walker, Michael M.   +3 more
core   +1 more source

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

An assessment of haematological and serum biochemical indices in Salmo trutta caspius [PDF]

, 2008
Haematological and biochemical serum analyses were carried out in 131 fish specimens in three age and size groups including smolt, juvenile and breeder.
Ghomi, M.R., Jamalzadeh, H.R., Keyvan, A., Oryan, S.   +3 more
core  

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

First Report of the Malacosporean Parasite Tetracapsuloides bryosalmonae in the Faroe Islands Reveals Widespread Distribution and High Prevalence in Brown Trout

Journal of Fish Diseases, EarlyView.
ABSTRACT The myxozoan endoparasite Tetracapsuloides bryosalmonae (Tb), the causative agent of proliferative kidney disease (PKD) in salmonids, has predominantly been reported in temperate regions of continental Europe and North America. Here, we present the first record of Tb in the Faroe Islands, extending the known northern distribution of the ...
Magnus Lauringson, Lilian Pukk, Leivur Janus Hansen, Anti Vasemägi   +3 more
wiley   +1 more source

Contribution of muskeg channel habitats to juvenile coho salmon production in the Situk River, Alaska [PDF]

, 2006
Thesis (M.S.) University of Alaska Fairbanks, 2006This study examines seasonal patters of habitat use by juvenile coho salmon in the Situk River and the importance of muskeg channels. To determine seasonal patterns I trapped fish from a range of habitats
Schaberg, Kevin L.
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