Leaping Behavior of Juvenile Coho (Oncorhynchus kisutch) and Atlantic Salmon (Salmo salar)

1978 ◽  
Vol 35 (6) ◽  
pp. 907-909 ◽  
Author(s):  
Philip E. K. Symons
Keyword(s):  
Atlantic Salmon ◽  
Key Words ◽  
Freshwater Fish ◽  
Salmo Salar ◽  
Environmental Conditions ◽  
Temperature Effects ◽  
Species Differences ◽  
Oncorhynchus Kisutch ◽  
Atlantic Salmon Salmo Salar ◽  
Key Words Fish

Juveniles of coho (Oncorhynchus kisutch) and Atlantic salmon (Salmo salar) proved capable of leaping falls at least 5 body lengths in height. No species differences were apparent: both species leapt lower falls (12 cm) more readily than higher ones (27 and 57 cm) and proportionately more leaps occurred on days with temperatures between 14.0 and 17.0 °C than on days with lower temperatures. Key words: fish, freshwater fish, behavior, migrations, environmental conditions, temperature effects

Feeding by Hatchery-Reared and Wild Atlantic Salmon (Salmo salar) Parr in Streams

1979 ◽  
Vol 36 (11) ◽  
pp. 1408-1412 ◽  
Author(s):  
A. J. Sosiak ◽  
R. G. Randall ◽  
J. A. McKenzie
Keyword(s):  
Atlantic Salmon ◽  
Key Words ◽  
Salmo Salar ◽  
Food Selection ◽  
Stomach Contents ◽  
Stomach Fullness ◽  
Size Dependent ◽  
Atlantic Salmon Salmo Salar ◽  
Feeding Experience ◽  
Salmon Parr

Hatchery-reared Atlantic salmon (Salmo salar) parr were captured 1–3 mo after release in streams, along with wild parr from the same streams. Identification of their stomach contents showed total number of organisms and number of taxa per stomach were greater and there was a higher index of stomach fullness in wild than in hatchery parr resident ≤ 2 mo in a stream. Wild parr consumed more Brachycentridae, Hydroptilidae, Diptera, and Plecoptera than did hatchery parr, but sometimes less Odontoceridae and Heptageniidae. These differences may have arisen from size-dependent food selection, the effects of feeding experience, or possible microhabitat differences between wild and hatchery parr. Key words: salmon parr, hatchery-reared, wild, feeding

The effect of environmental conditions on the dynamics of fatty acids in juveniles of the Atlantic salmon (Salmo salar L.)

2015 ◽  
Vol 46 (3) ◽  
pp. 267-271 ◽  
Author(s):  
N. N. Nemova ◽  
Z. A. Nefedova ◽  
S. A. Murzina ◽  
A. E. Veselov ◽  
P. O. Ripatti ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Environmental Conditions ◽  
Atlantic Salmon Salmo Salar

scholarly journals Phosphorus nutrition in farmed Atlantic salmon (Salmo salar): Life stage and temperature effects on bone pathologies

Aquaculture ◽  
2019 ◽  
Vol 511 ◽  
pp. 734246 ◽  
Author(s):  
Thomas W.K. Fraser ◽  
P. Eckhard Witten ◽  
Sissel Albrektsen ◽  
Olav Breck ◽  
Ramon Fontanillas ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Temperature Effects ◽  
Life Stage ◽  
Phosphorus Nutrition ◽  
Atlantic Salmon Salmo Salar ◽  
Farmed Atlantic Salmon

Variation in Age at First Spawning in Atlantic Salmon (Salmo salar)

1978 ◽  
Vol 35 (1) ◽  
pp. 145-147 ◽  
Author(s):  
Gunnar Nævdal ◽  
Marianne Holm ◽  
Oscar Ingebrigtsen ◽  
Dag Møller
Keyword(s):  
Atlantic Salmon ◽  
Key Words ◽  
Salmo Salar ◽  
Life Histories ◽  
Salmon River ◽  
Atlantic Salmon Salmo Salar ◽  
Mature Fish ◽  
Maturation Age

Significant differences in the proportion of mature fish in groups of Atlantic salmon (Salmo salar) of different river origins maintained under the same conditions were observed during the 1st and 2nd yr of sea rearing. Nearly all fish in sib groups originating from grilse rivers matured during the 2nd sea year, while few or no mature fish were found in the groups originating from rivers producing mainly multi-sea-winter salmon. The observations were in accordance with the life histories of the different river populations, indicating that salmon inherit rather than acquire a tendency to mature at a certain age. Key words: Atlantic salmon, maturation age, cultured salmon, river populations

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