Population-specific gene expression responses to hybridization between farm and wild Atlantic salmon
Because of intrinsic differences in their genetic architectures, wild populations invaded by domesticated individuals could experience population-specific consequences following introgression by genetic material of domesticated origin. Expression levels of 16 000 transcripts were quantified by micro...
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ftdalhouse:oai:DalSpace.library.dal.ca:10222/29022 2023-05-15T15:31:25+02:00 Population-specific gene expression responses to hybridization between farm and wild Atlantic salmon Normandeau, Eric Hutchings, Jeffrey Alexander Fraser, Dylan J. Bernatchez, Louis 2013-07-04T18:43:10Z https://doi.org/10.1111/j.1752-4571.2009.00074.x http://hdl.handle.net/10222/29022 unknown Evolutionary Applications 1752-4571 http://dx.doi.org/10.1111/j.1752-4571.2009.00074.x http://hdl.handle.net/10222/29022 2 4 489 article 2013 ftdalhouse https://doi.org/10.1111/j.1752-4571.2009.00074.x 2021-12-29T18:08:48Z Because of intrinsic differences in their genetic architectures, wild populations invaded by domesticated individuals could experience population-specific consequences following introgression by genetic material of domesticated origin. Expression levels of 16 000 transcripts were quantified by microarrays in liver tissue from farm, wild, and farm-wild backcross (i.e. F(1) farm-wild hybrid x wild; total n = 50) Atlantic salmon (Salmo salar) raised under common environmental conditions. The wild populations and farm strain originated from three North American rivers in eastern Canada (Stewiacke, Tusket, and Saint John rivers, respectively). Analysis of variance revealed 177 transcripts with different expression levels among the five strains compared. Five times more of these transcripts were differentiated between farmed parents and Tusket backcrosses (n = 53) than between Stewiacke backcrosses and their farmed parents (n = 11). Altered biological processes in backcrosses also differed between populations both in number and in the type of processes impacted (metabolism vs immunity). Over-dominant gene expression regulation in backcrosses varied considerably between populations (23% in Stewiacke vs 44% in Tusket). Hence, the consequences of introgression of farm genetic material on gene expression depended on population-specific genetic architectures. These results support the need to evaluate impacts of farm-wild genetic interactions at the population scale. Article in Journal/Newspaper Atlantic salmon Salmo salar Dalhousie University: DalSpace Institutional Repository Canada Evolutionary Applications 2 4 489 503 |
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Dalhousie University: DalSpace Institutional Repository |
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Because of intrinsic differences in their genetic architectures, wild populations invaded by domesticated individuals could experience population-specific consequences following introgression by genetic material of domesticated origin. Expression levels of 16 000 transcripts were quantified by microarrays in liver tissue from farm, wild, and farm-wild backcross (i.e. F(1) farm-wild hybrid x wild; total n = 50) Atlantic salmon (Salmo salar) raised under common environmental conditions. The wild populations and farm strain originated from three North American rivers in eastern Canada (Stewiacke, Tusket, and Saint John rivers, respectively). Analysis of variance revealed 177 transcripts with different expression levels among the five strains compared. Five times more of these transcripts were differentiated between farmed parents and Tusket backcrosses (n = 53) than between Stewiacke backcrosses and their farmed parents (n = 11). Altered biological processes in backcrosses also differed between populations both in number and in the type of processes impacted (metabolism vs immunity). Over-dominant gene expression regulation in backcrosses varied considerably between populations (23% in Stewiacke vs 44% in Tusket). Hence, the consequences of introgression of farm genetic material on gene expression depended on population-specific genetic architectures. These results support the need to evaluate impacts of farm-wild genetic interactions at the population scale. |
format |
Article in Journal/Newspaper |
author |
Normandeau, Eric Hutchings, Jeffrey Alexander Fraser, Dylan J. Bernatchez, Louis |
spellingShingle |
Normandeau, Eric Hutchings, Jeffrey Alexander Fraser, Dylan J. Bernatchez, Louis Population-specific gene expression responses to hybridization between farm and wild Atlantic salmon |
author_facet |
Normandeau, Eric Hutchings, Jeffrey Alexander Fraser, Dylan J. Bernatchez, Louis |
author_sort |
Normandeau, Eric |
title |
Population-specific gene expression responses to hybridization between farm and wild Atlantic salmon |
title_short |
Population-specific gene expression responses to hybridization between farm and wild Atlantic salmon |
title_full |
Population-specific gene expression responses to hybridization between farm and wild Atlantic salmon |
title_fullStr |
Population-specific gene expression responses to hybridization between farm and wild Atlantic salmon |
title_full_unstemmed |
Population-specific gene expression responses to hybridization between farm and wild Atlantic salmon |
title_sort |
population-specific gene expression responses to hybridization between farm and wild atlantic salmon |
publishDate |
2013 |
url |
https://doi.org/10.1111/j.1752-4571.2009.00074.x http://hdl.handle.net/10222/29022 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
Evolutionary Applications 1752-4571 http://dx.doi.org/10.1111/j.1752-4571.2009.00074.x http://hdl.handle.net/10222/29022 2 4 489 |
op_doi |
https://doi.org/10.1111/j.1752-4571.2009.00074.x |
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Evolutionary Applications |
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2 |
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4 |
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489 |
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503 |
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1766361920866091008 |