Differences in transcription levels among wild, domesticated, and hybrid Atlantic salmon ( Salmo salar) from two environments
Abstract Escaped domesticated individuals can introduce disadvantageous traits into wild populations due to both adaptive differences between population ancestors and human‐induced changes during domestication. In contrast to their domesticated counterparts, some endangered wild Atlantic salmon popu...
Published in: | Molecular Ecology |
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crwiley:10.1111/j.1365-294x.2012.05567.x 2024-06-02T08:03:36+00:00 Differences in transcription levels among wild, domesticated, and hybrid Atlantic salmon ( Salmo salar) from two environments DEBES, PAUL V. NORMANDEAU, ERIC FRASER, DYLAN J. BERNATCHEZ, LOUIS HUTCHINGS, JEFFREY A. 2012 http://dx.doi.org/10.1111/j.1365-294x.2012.05567.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-294X.2012.05567.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-294X.2012.05567.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 Molecular Ecology volume 21, issue 11, page 2574-2587 ISSN 0962-1083 1365-294X journal-article 2012 crwiley https://doi.org/10.1111/j.1365-294x.2012.05567.x 2024-05-03T10:36:19Z Abstract Escaped domesticated individuals can introduce disadvantageous traits into wild populations due to both adaptive differences between population ancestors and human‐induced changes during domestication. In contrast to their domesticated counterparts, some endangered wild Atlantic salmon populations encounter during their marine stage large amounts of suspended sediments, which may act as a selective agent. We used microarrays to elucidate quantitative transcriptional differences between a domesticated salmon strain, a wild population and their first‐generation hybrids during their marine life stage, to describe transcriptional responses to natural suspended sediments, and to test for adaptive genetic variation in plasticity relating to a history of natural exposure or nonexposure to suspended sediments. We identified 67 genes differing in transcription level among salmon groups. Among these genes, processes related to energy metabolism and ion homoeostasis were over‐represented, while genes contributing to immunity and actin‐/myosin‐related processes were also involved in strain differentiation. Domestic–wild hybrids exhibited intermediate transcription patterns relative to their parents for two‐thirds of all genes that differed between their parents; however, genes deviating from additivity tended to have similar levels to those expressed by the wild parent. Sediments induced increases in transcription levels of eight genes, some of which are known to contribute to external or intracellular damage mitigation. Although genetic variation in plasticity did not differ significantly between groups after correcting for multiple comparisons, two genes (metallothionein and glutathione reductase) tended to be more plastic in response to suspended sediments in wild and hybrid salmon, and merit further examination as candidate genes under natural selection. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Molecular Ecology 21 11 2574 2587 |
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English |
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Abstract Escaped domesticated individuals can introduce disadvantageous traits into wild populations due to both adaptive differences between population ancestors and human‐induced changes during domestication. In contrast to their domesticated counterparts, some endangered wild Atlantic salmon populations encounter during their marine stage large amounts of suspended sediments, which may act as a selective agent. We used microarrays to elucidate quantitative transcriptional differences between a domesticated salmon strain, a wild population and their first‐generation hybrids during their marine life stage, to describe transcriptional responses to natural suspended sediments, and to test for adaptive genetic variation in plasticity relating to a history of natural exposure or nonexposure to suspended sediments. We identified 67 genes differing in transcription level among salmon groups. Among these genes, processes related to energy metabolism and ion homoeostasis were over‐represented, while genes contributing to immunity and actin‐/myosin‐related processes were also involved in strain differentiation. Domestic–wild hybrids exhibited intermediate transcription patterns relative to their parents for two‐thirds of all genes that differed between their parents; however, genes deviating from additivity tended to have similar levels to those expressed by the wild parent. Sediments induced increases in transcription levels of eight genes, some of which are known to contribute to external or intracellular damage mitigation. Although genetic variation in plasticity did not differ significantly between groups after correcting for multiple comparisons, two genes (metallothionein and glutathione reductase) tended to be more plastic in response to suspended sediments in wild and hybrid salmon, and merit further examination as candidate genes under natural selection. |
format |
Article in Journal/Newspaper |
author |
DEBES, PAUL V. NORMANDEAU, ERIC FRASER, DYLAN J. BERNATCHEZ, LOUIS HUTCHINGS, JEFFREY A. |
spellingShingle |
DEBES, PAUL V. NORMANDEAU, ERIC FRASER, DYLAN J. BERNATCHEZ, LOUIS HUTCHINGS, JEFFREY A. Differences in transcription levels among wild, domesticated, and hybrid Atlantic salmon ( Salmo salar) from two environments |
author_facet |
DEBES, PAUL V. NORMANDEAU, ERIC FRASER, DYLAN J. BERNATCHEZ, LOUIS HUTCHINGS, JEFFREY A. |
author_sort |
DEBES, PAUL V. |
title |
Differences in transcription levels among wild, domesticated, and hybrid Atlantic salmon ( Salmo salar) from two environments |
title_short |
Differences in transcription levels among wild, domesticated, and hybrid Atlantic salmon ( Salmo salar) from two environments |
title_full |
Differences in transcription levels among wild, domesticated, and hybrid Atlantic salmon ( Salmo salar) from two environments |
title_fullStr |
Differences in transcription levels among wild, domesticated, and hybrid Atlantic salmon ( Salmo salar) from two environments |
title_full_unstemmed |
Differences in transcription levels among wild, domesticated, and hybrid Atlantic salmon ( Salmo salar) from two environments |
title_sort |
differences in transcription levels among wild, domesticated, and hybrid atlantic salmon ( salmo salar) from two environments |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1111/j.1365-294x.2012.05567.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-294X.2012.05567.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-294X.2012.05567.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Molecular Ecology volume 21, issue 11, page 2574-2587 ISSN 0962-1083 1365-294X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor http://doi.wiley.com/10.1002/tdm_license_1.1 |
op_doi |
https://doi.org/10.1111/j.1365-294x.2012.05567.x |
container_title |
Molecular Ecology |
container_volume |
21 |
container_issue |
11 |
container_start_page |
2574 |
op_container_end_page |
2587 |
_version_ |
1800748172549554176 |