Food acquisition and growth of juvenile Atlantic salmon (Salmo salar) in relation to spatial distribution of food

Aquaculture ◽  
1996 ◽  
Vol 143 (3-4) ◽  
pp. 277-289 ◽  
Author(s):  
Even H. Jørgensen ◽  
Bjørn M. Baardvik ◽  
Robert Eliassen ◽  
Malcolm Jobling
Keyword(s):  
Spatial Distribution ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Food Acquisition ◽  
Atlantic Salmon Salmo Salar ◽  
Juvenile Atlantic Salmon

Spatial distribution correspondence of a juvenile Atlantic salmon Salmo salar cohort from age 0+ to 1+ years

2012 ◽  
Vol 81 (3) ◽  
pp. 1059-1069 ◽  
Author(s):  
A. Foldvik ◽  
M. A. K. Teichert ◽  
S. Einum ◽  
A. G. Finstad ◽  
O. Ugedal ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Atlantic Salmon Salmo Salar ◽  
Juvenile Atlantic Salmon

Alternative competitive strategies and the cost of food acquisition in juvenile Atlantic salmon (Salmo salar)

Aquaculture ◽  
1998 ◽  
Vol 167 (1-2) ◽  
pp. 17-26 ◽  
Author(s):  
Colin E Adams ◽  
Felicity A Huntingford ◽  
James F Turnbull ◽  
Christopher Beattie
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Competitive Strategies ◽  
Food Acquisition ◽  
Atlantic Salmon Salmo Salar ◽  
Juvenile Atlantic Salmon ◽  
The Cost

Spatial distribution of juvenile Atlantic salmon (Salmo salar) in a subarctic river: size-specific changes in a strongly seasonal environment

2004 ◽  
Vol 61 (12) ◽  
pp. 2329-2338 ◽  
Author(s):  
Aki Mäki-Petäys ◽  
Jaakko Erkinaro ◽  
Eero Niemelä ◽  
Ari Huusko ◽  
Timo Muotka
Keyword(s):  
Spatial Distribution ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Low Velocity ◽  
Atlantic Salmon Salmo Salar ◽  
Seasonal Environment ◽  
Juvenile Atlantic Salmon ◽  
Boreal Streams ◽  
Management Schemes ◽  
Time Of Year

We examined seasonal variation in the spatial distribution and habitat preference of juvenile Atlantic salmon (Salmo salar) in a subarctic river characterized by near-zero water temperatures for 7–8 months a year. Size-specific differences in habitat use were pronounced in summer but disappeared at the onset of winter, when the habitats preferred by small (≤6 cm) and larger (7–17 cm) salmon overlapped heavily. Small salmon favoured low-velocity habitats during all seasons, and in summer and autumn they mainly occupied shallow microhabitats along stream margins. In winter and spring, small salmon preferred deeper habitats farther away from the shoreline. Larger salmon favoured deeper habitats in all seasons, but they only occupied slowly flowing areas at low water temperatures. Since all salmon size classes were closely associated with deep and low-velocity habitats in winter and spring, this time of year may represent a size-selective bottleneck for Atlantic salmon populations. Therefore, management schemes aiming to enhance salmonid habitats in boreal streams must rest on the knowledge of season- and size-specific habitat requirements of salmonid species.

scholarly journals Sulphated glycosaminoglycans and proteoglycans in the developing vertebral column of juvenile Atlantic salmon (Salmo salar)

2015 ◽  
Vol 41 (4) ◽  
pp. 1029-1051 ◽  
Author(s):  
Kirsten O. Hannesson ◽  
Elisabeth Ytteborg ◽  
Harald Takle ◽  
Grethe Enersen ◽  
Grete Bæverfjord ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Vertebral Column ◽  
Atlantic Salmon Salmo Salar ◽  
Juvenile Atlantic Salmon ◽  
Sulphated Glycosaminoglycans

Effect of time of day, time of year, and life history strategy on time budgeting in juvenile Atlantic salmon, Salmo salar

1999 ◽  
Vol 56 (12) ◽  
pp. 2397-2403 ◽  
Author(s):  
Sveinn K Valdimarsson ◽  
Neil B Metcalfe
Keyword(s):  
Life History ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Life History Strategy ◽  
Time Of Day ◽  
Life History Strategies ◽  
Foraging Efficiency ◽  
Atlantic Salmon Salmo Salar ◽  
Juvenile Atlantic Salmon ◽  
Time Of Year

Traditionally, behavioural studies on juvenile Atlantic salmon, Salmo salar, have been conducted during the day in summer. It is known that Atlantic salmon become nocturnal in winter, but very little is known about their behaviour at that time. Therefore, observations in a seminatural stream were carried out during the day and night, from February to June, comparing diel and seasonal differences in behaviour between fish adopting alternative life history strategies. The results showed a general trend for more activity in spring than in winter, and the fish were found to be foraging at surprisingly low light levels. There were differences in relative feeding rate between the life history strategies; the early migrant fish foraged mostly during the day whereas the delayed migrant fish did more foraging at night. There is some evidence that the early migrant fish made fewer feeding attempts over the winter, which is surprising, since they grow faster over that period. This suggests differences in foraging efficiency, which could contribute to the separation into these two life history strategies.

Thermal performance of juvenile Atlantic Salmon, Salmo salar L.

2001 ◽  
Vol 15 (6) ◽  
pp. 701-711 ◽  
Author(s):  
B. JONSSON ◽  
T. FORSETH ◽  
A. J. JENSEN ◽  
T. F. NAESJE
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Thermal Performance ◽  
Atlantic Salmon Salmo Salar ◽  
Juvenile Atlantic Salmon
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