Early-life fitness trait variation among divergent European and North American farmed and Newfoundland wild Atlantic salmon (Salmo salar) populations

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.

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

Animal Genetics ◽

10.1111/j.1365-2052.2010.02032.x ◽

2010 ◽

Vol 41 (5) ◽

pp. 531-536 ◽

Cited By ~ 26

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

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Differences in Atlantic Salmon, Salmo salar, from North America and Europe

Journal of the Fisheries Research Board of Canada ◽

10.1139/f72-029 ◽

1972 ◽

Vol 29 (2) ◽

pp. 179-185 ◽

Cited By ~ 19

Author(s):

O. L. Nyman ◽

J. H. C. Pippy

Keyword(s):

North America ◽

Atlantic Salmon ◽

Salmo Salar ◽

North American ◽

Serum Proteins ◽

Fork Length ◽

Anisakis Simplex ◽

Atlantic Salmon Salmo Salar

Differences in electropherograms produced by serum proteins and liver esterases were used to identify North American and European Atlantic salmon (Salmo salar) caught at sea. Division of salmon according to continent of origin was supported by mean river age, mean fork length, and abundance of the two parasites Anisakis simplex and Eubothrium crassum. Consistent differences in electrophoretic behaviour of serum proteins and liver esterases in salmon from the two continents support the suggestion that salmon from North America and Europe represent different subspecies.

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Water treatment with crushed marble or sodium silicate mitigates combined copper and aluminium toxicity for the early life stages of Atlantic salmon (Salmo salar L.)

Aquacultural Engineering ◽

10.1016/j.aquaeng.2014.04.001 ◽

2014 ◽

Vol 60 ◽

pp. 77-83 ◽

Cited By ~ 8

Author(s):

Carlos A. Pessot ◽

Åse Åtland ◽

Helge Liltved ◽

Maria Gabriela Lobos ◽

Torstein Kristensen

Keyword(s):

Water Treatment ◽

Atlantic Salmon ◽

Sodium Silicate ◽

Salmo Salar ◽

Early Life ◽

Aluminium Toxicity ◽

Life Stages ◽

Early Life Stages ◽

Atlantic Salmon Salmo Salar

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A minisatellite DNA marker for discriminating between European and North American Atlantic salmon (Salmo salar)

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f95-822 ◽

1995 ◽

Vol 52 (11) ◽

pp. 2305-2311 ◽

Cited By ~ 32

Author(s):

John B. Taggart ◽

Eric Verspoor ◽

Paul T. Galvin ◽

Paloma Morán ◽

Andrew Ferguson

Keyword(s):

Atlantic Salmon ◽

Allele Frequency ◽

Salmo Salar ◽

North American ◽

Nuclear Dna ◽

Dna Marker ◽

Low Frequency ◽

Geographic Range ◽

Minisatellite Dna ◽

Atlantic Salmon Salmo Salar

A highly discriminatory and practical nuclear DNA genetic marker that can distinguish between Atlantic salmon (Salmo salar) of European and North American origin is described. Screening of 2847 European and 247 North American Atlantic salmon from much of its geographic range for variability at a minisatellite locus, Ssa-A45/2/2, revealed the continental stocks to be almost fixed for two different-sized, easily discernable alleles. Virtually all European Atlantic salmon were homozygous for a 3.00-kb allele (frequency > 0.999), while a smaller 2.77-kb allele (frequency = 0.946) predominated in all North American populations. Whereas the 2.77-kb allele was found exclusively in North American salmon, an allele indistinguishable in size from the 3.00-kb European diagnostic allele was also observed at low frequency (0.036) in North American fish. Eight other continent-specific rare alleles (highest frequency = 0.006) were also observed. The results suggest that little, if any, natural gene flow occurs between the two continental groups of Atlantic salmon.

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