The prevalence of vertebral deformities is increased with higher egg incubation temperatures and triploidy in Atlantic salmon Salmo salar L.

2013 ◽  
Vol 38 (1) ◽  
pp. 75-89 ◽  
Author(s):  
T W K Fraser ◽  
T Hansen ◽  
M S Fleming ◽  
P G Fjelldal
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Vertebral Deformities ◽  
Egg Incubation ◽  
Atlantic Salmon Salmo Salar ◽  
Incubation Temperatures

Timing of Spawning in Norwegian Atlantic Salmon (Salmo salar)

1988 ◽  
Vol 45 (5) ◽  
pp. 845-849 ◽  
Author(s):  
Tor G. Heggberget
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Temperature Regime ◽  
Stream Flow ◽  
Optimal Time ◽  
Degree Days ◽  
Egg Incubation ◽  
Atlantic Salmon Salmo Salar ◽  
Spawning Time ◽  
Timing Of Spawning

A hypothesis that thermal regime regulates the timing of spawning in Atlantic salmon (Salmo salar) was analysed by correlating time of commencement and peak of spawning in 16 Norwegian streams with temperature, latitude, and stream flow. Only temperature during incubation of the eggs proved to have any statistically significant effect. Since the duration of egg incubation is known to depend on temperature regime (i.e. on degree-days), a similar linking of spawning time to stream temperature allows spawning to occur at a time which will result in hatching of eggs at a specific and presumably optimal time for survival of fry.

scholarly journals Molecular pathology of vertebral deformities in hyperthermic Atlantic salmon (Salmo salar)

2010 ◽  
Vol 10 (1) ◽  
pp. 12 ◽  
Author(s):  
Elisabeth Ytteborg ◽  
Grete Baeverfjord ◽  
Jacob Torgersen ◽  
Kirsti Hjelde ◽  
Harald Takle
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Molecular Pathology ◽  
Vertebral Deformities ◽  
Atlantic Salmon Salmo Salar

Development of Atlantic Salmon (Salmo salar) Eggs and Alevins Under Varied Temperature Regimes

1977 ◽  
Vol 34 (1) ◽  
pp. 31-43 ◽  
Author(s):  
R. H. Peterson ◽  
H. C. E. Spinney ◽  
A. Sreedharan
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Yolk Sac ◽  
Optimum Temperature ◽  
Atlantic Salmon Salmo Salar ◽  
Temperature Regimes ◽  
Varied Temperature ◽  
Eye Pigmentation ◽  
Incubation Temperatures

Atlantic salmon (Salmo salar) eggs and alevins were raised under conditions where the temperature was systematically varied either at fertilization, at the eyed egg stage, or at hatching. Mortality was more than 20% in eggs started immediately after fertilization at constant incubation temperatures < 4 °C as compared with 5% or less at temperatures > 4 °C. Alevins that eyed at 8 °C and higher were progressively smaller the higher the temperature. The optimum temperature from fertilization to eye pigmentation was near 6 °C. Eyed eggs reared at lower temperatures until hatching were larger than those hatched at higher temperatures. This size differential was maintained until the yolk was completely absorbed at all posthatching temperatures investigated. Sudden decreases in temperature at the eyed egg and hatching stages induced severe edema of the alevin yolk sac, resulting in slower growth and increased mortality.

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