Early life traits of farm and wild Atlantic salmon Salmo salar and first generation hybrids in the south coast of Newfoundland

2017 ◽  
Vol 90 (6) ◽  
pp. 2271-2288 ◽  
Author(s):  
D. Hamoutene ◽  
J. Perez-Casanova ◽  
K. Burt ◽  
L. Lush ◽  
J. Caines ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Early Life ◽  
First Generation ◽  
South Coast ◽  
The South ◽  
Atlantic Salmon Salmo Salar ◽  
Life Traits

Distribution of Al, Cd, Cu, Fe, Mn, Pb and Zn in Liver, Gills and Muscle of Early Life Stages of Atlantic Salmon (Salmo salar)

2019 ◽  
Vol 102 (3) ◽  
pp. 419-424
Author(s):  
María Gabriela Lobos ◽  
Claudio Sáez ◽  
Alejandra Chavarría ◽  
Maritza Sepúlveda ◽  
Patricia Díaz ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Early Life ◽  
Life Stages ◽  
Early Life Stages ◽  
Atlantic Salmon Salmo Salar

Spatial distribution of Atlantic salmon (Salmo salar) breeders: among- and within-river variation and predicted consequences for offspring habitat availability

2010 ◽  
Vol 67 (12) ◽  
pp. 1993-2001 ◽  
Author(s):  
Anders Gravbrøt Finstad ◽  
Sigurd Einum ◽  
Leif Magnus Sættem ◽  
Bjart Are Hellen
Keyword(s):  
Spatial Distribution ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Early Life ◽  
Skewed Distribution ◽  
Habitat Availability ◽  
Life Stages ◽  
Early Life Stages ◽  
Juvenile Dispersal ◽  
Atlantic Salmon Salmo Salar

The spatial distribution of breeders within populations may have important implications for offspring habitat availability in species where mobility of early life stages is restricted. Here we address this issue using time series of spawner distributions from eight Norwegian Atlantic salmon ( Salmo salar ) populations. Whereas spawners distribute themselves uniformly along the length of the rivers in some populations, others show a heavily skewed distribution. Linear mixed models identified pronounced and temporally consistent among-population differences in spawner distributions. Using a model of limited juvenile dispersal from nests following emergence, we show that the observed spawner distributions are predicted to result in significant proportions of rivers being inaccessible for young of the year during early life stages, and the magnitude of this effect differs among populations (e.g., ranging from 27% to 59% for dispersal distance of 250 m). Thus, assuming population regulation during early but not later juvenile stages, consistent differences in spawner distributions among populations such as those observed here may translate into differences in productivity (i.e., carrying capacity) as well as egg densities required for populations to reach their spawning targets.

Segregation of infectious pancreatic necrosis resistance QTL in the early life cycle of Atlantic Salmon (Salmo salar)

2010 ◽  
Vol 41 (5) ◽  
pp. 531-536 ◽  
Author(s):  
A. A. Gheyas ◽  
R. D. Houston ◽  
J. C. Mota-Velasco ◽  
D. R. Guy ◽  
A. E. Tinch ◽  
...  
Keyword(s):  
Life Cycle ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Early Life ◽  
Pancreatic Necrosis ◽  
Resistance Qtl ◽  
Atlantic Salmon Salmo Salar ◽  
Infectious Pancreatic Necrosis

Spawning behaviour and success of mature male Atlantic salmon (Salmo salar) parr of farmed and wild origin

2005 ◽  
Vol 62 (5) ◽  
pp. 1153-1160 ◽  
Author(s):  
Laura K Weir ◽  
Jeffrey A Hutchings ◽  
Ian A Fleming ◽  
Sigurd Einum
Keyword(s):  
Reproductive Success ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
First Generation ◽  
Large Male ◽  
Mature Male ◽  
Atlantic Salmon Salmo Salar ◽  
Spawning Behaviour ◽  
Mature Male Parr ◽  
Variance In Reproductive Success

We examined genetic differences in the reproduction of an alternative maturation phenotype in Atlantic salmon (Salmo salar) by comparing the spawning behaviour and success among farmed, first-generation hybrid, and wild mature male parr raised in similar environments. Parr competed for spawning opportunities in the presence of either wild or farmed large males. There were no consistent differences among groups in aggression; however, there were differences in spawning participation with respect to large male origin and among parr types. There was a strong negative temporal effect on mature male parr spawning participation that differed by parr type; wild and farmed parr were most likely to participate in early spawnings, with hybrids being the most likely to participate in late spawnings. Overall, parr were also less likely to participate in spawnings involving large farmed males. Variance in reproductive success was higher among parr than among large males. Our results are consistent with the hypothesis that there are genetically based behavioural differences among mature male parr of farmed and wild origin that may potentially lead to differences in reproductive success.

The costs of habitat utilization of wild, farmed, and domesticated juvenile Atlantic salmon (Salmo salar)

2004 ◽  
Vol 61 (12) ◽  
pp. 2302-2313 ◽  
Author(s):  
Eva C Enders ◽  
Daniel Boisclair ◽  
André G Roy
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
First Generation ◽  
Wild Fish ◽  
Farmed Fish ◽  
Atlantic Salmon Salmo Salar ◽  
Juvenile Atlantic Salmon ◽  
Generation Progeny ◽  
High Turbulence ◽  
Wild Progenitors

We compared morphometry and total swimming costs of wild, farmed (first-generation hatchery progeny of wild progenitors) and domesticated (seventh-generation progeny of the Norwegian aquaculture strain) juvenile Atlantic salmon (Salmo salar). Respirometry experiments were performed to assess total swimming costs of fish ranging in size from 4.0 to 16.1 g wet mass at a water temperature of 15 °C. Fish were subjected to flow conditions of low and high turbulence. Total swimming costs increased significantly with intensity of turbulence and were, on average, 1.4 times higher at high than at low turbulence. Total swimming costs were 2.4- to 4.0-fold higher than predicted by forced swimming models developed under conditions that minimize flow heterogeneity. Total swimming costs of wild and farmed fish were not statistically different (average difference = 6.7%). Hence, swimming costs models developed using farmed fish may be used to estimate swimming costs of wild fish. However, domesticated fish had total swimming costs 12.0% to 29.2% higher than farmed or wild fish. This may be related to domesticated fish having deeper bodies and smaller fins.

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