Assessing genotype–environment interactions in Atlantic salmon reared in freshwater loch and recirculating systems
Abstract The interest in recirculating aquaculture systems (RAS) is growing due to their benefits such as increased productivity, better control over animal care, reduced environmental effects, and less water consumption. However, in some regions of the world, traditional aquaculture methods remain...
Published in: | Evolutionary Applications |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2024
|
Subjects: | |
Online Access: | https://doi.org/10.1111/eva.13751 https://doaj.org/article/3c1751f326994aa8808e297541dc3be7 |
id |
ftdoajarticles:oai:doaj.org/article:3c1751f326994aa8808e297541dc3be7 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:3c1751f326994aa8808e297541dc3be7 2024-09-15T17:56:33+00:00 Assessing genotype–environment interactions in Atlantic salmon reared in freshwater loch and recirculating systems Mette J. Tollervey Michaël Bekaert Agustín Barría González Saif Agha Ross D. Houston Andrea Doeschl‐Wilson Ashie Norris Herve Migaud Alejandro P. Gutierrez 2024-08-01T00:00:00Z https://doi.org/10.1111/eva.13751 https://doaj.org/article/3c1751f326994aa8808e297541dc3be7 EN eng Wiley https://doi.org/10.1111/eva.13751 https://doaj.org/toc/1752-4571 1752-4571 doi:10.1111/eva.13751 https://doaj.org/article/3c1751f326994aa8808e297541dc3be7 Evolutionary Applications, Vol 17, Iss 8, Pp n/a-n/a (2024) aquaculture breeding systems GxE phenotypic plasticity Salmo salar Evolution QH359-425 article 2024 ftdoajarticles https://doi.org/10.1111/eva.13751 2024-09-02T15:34:38Z Abstract The interest in recirculating aquaculture systems (RAS) is growing due to their benefits such as increased productivity, better control over animal care, reduced environmental effects, and less water consumption. However, in some regions of the world, traditional aquaculture methods remain prevalent, and selective breeding has often been designed for performance within these systems. Therefore, it is important to evaluate how current fish populations fare in RAS to guide future breeding choices. In a commercial setting, we explore the genetic structure of growth characteristics, measure genotype–environment interactions (GxE) in salmon smolts, and examine genetic markers related to growth in freshwater lochs and RAS. Young salmon were raised together until they reached the parr stage, after which they were divided equally between freshwater net‐pens and RAS. After an 8‐week period, we sampled fish from each environment and genotyped them. Our findings revealed that fish reared in RAS were generally smaller in weight and length but exhibited a higher condition factor and uniformity. We found a notably smaller component of unexplained variance in the RAS, leading to higher heritability estimates. We observed a low GxE effect for length and condition factor, but significant re‐ranking for whole‐body weight, as well as noticeable differences in trait associations across environments. Specifically, a segment of chromosome 22 was found to be linked with the condition factor in the RAS population only. Results suggests that if the use of RAS continues to expand, the efficiency of existing commercial populations may not reach its full potential unless breeding programs specific to RAS are implemented. Article in Journal/Newspaper Atlantic salmon Salmo salar Directory of Open Access Journals: DOAJ Articles Evolutionary Applications 17 8 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
aquaculture breeding systems GxE phenotypic plasticity Salmo salar Evolution QH359-425 |
spellingShingle |
aquaculture breeding systems GxE phenotypic plasticity Salmo salar Evolution QH359-425 Mette J. Tollervey Michaël Bekaert Agustín Barría González Saif Agha Ross D. Houston Andrea Doeschl‐Wilson Ashie Norris Herve Migaud Alejandro P. Gutierrez Assessing genotype–environment interactions in Atlantic salmon reared in freshwater loch and recirculating systems |
topic_facet |
aquaculture breeding systems GxE phenotypic plasticity Salmo salar Evolution QH359-425 |
description |
Abstract The interest in recirculating aquaculture systems (RAS) is growing due to their benefits such as increased productivity, better control over animal care, reduced environmental effects, and less water consumption. However, in some regions of the world, traditional aquaculture methods remain prevalent, and selective breeding has often been designed for performance within these systems. Therefore, it is important to evaluate how current fish populations fare in RAS to guide future breeding choices. In a commercial setting, we explore the genetic structure of growth characteristics, measure genotype–environment interactions (GxE) in salmon smolts, and examine genetic markers related to growth in freshwater lochs and RAS. Young salmon were raised together until they reached the parr stage, after which they were divided equally between freshwater net‐pens and RAS. After an 8‐week period, we sampled fish from each environment and genotyped them. Our findings revealed that fish reared in RAS were generally smaller in weight and length but exhibited a higher condition factor and uniformity. We found a notably smaller component of unexplained variance in the RAS, leading to higher heritability estimates. We observed a low GxE effect for length and condition factor, but significant re‐ranking for whole‐body weight, as well as noticeable differences in trait associations across environments. Specifically, a segment of chromosome 22 was found to be linked with the condition factor in the RAS population only. Results suggests that if the use of RAS continues to expand, the efficiency of existing commercial populations may not reach its full potential unless breeding programs specific to RAS are implemented. |
format |
Article in Journal/Newspaper |
author |
Mette J. Tollervey Michaël Bekaert Agustín Barría González Saif Agha Ross D. Houston Andrea Doeschl‐Wilson Ashie Norris Herve Migaud Alejandro P. Gutierrez |
author_facet |
Mette J. Tollervey Michaël Bekaert Agustín Barría González Saif Agha Ross D. Houston Andrea Doeschl‐Wilson Ashie Norris Herve Migaud Alejandro P. Gutierrez |
author_sort |
Mette J. Tollervey |
title |
Assessing genotype–environment interactions in Atlantic salmon reared in freshwater loch and recirculating systems |
title_short |
Assessing genotype–environment interactions in Atlantic salmon reared in freshwater loch and recirculating systems |
title_full |
Assessing genotype–environment interactions in Atlantic salmon reared in freshwater loch and recirculating systems |
title_fullStr |
Assessing genotype–environment interactions in Atlantic salmon reared in freshwater loch and recirculating systems |
title_full_unstemmed |
Assessing genotype–environment interactions in Atlantic salmon reared in freshwater loch and recirculating systems |
title_sort |
assessing genotype–environment interactions in atlantic salmon reared in freshwater loch and recirculating systems |
publisher |
Wiley |
publishDate |
2024 |
url |
https://doi.org/10.1111/eva.13751 https://doaj.org/article/3c1751f326994aa8808e297541dc3be7 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Evolutionary Applications, Vol 17, Iss 8, Pp n/a-n/a (2024) |
op_relation |
https://doi.org/10.1111/eva.13751 https://doaj.org/toc/1752-4571 1752-4571 doi:10.1111/eva.13751 https://doaj.org/article/3c1751f326994aa8808e297541dc3be7 |
op_doi |
https://doi.org/10.1111/eva.13751 |
container_title |
Evolutionary Applications |
container_volume |
17 |
container_issue |
8 |
_version_ |
1810432741261443072 |