A molecular assessment of infectious agents carried by Atlantic salmon at sea and in three eastern Canadian rivers, including aquaculture escapees and North American and European origin wild stocks
Infectious agents are key components of animal ecology and drivers of host population dynamics. Knowledge of their diversity and transmission in the wild is necessary for the management and conservation of host species like Atlantic salmon ( Salmo salar). Although pathogen exchange can occur through...
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Canadian Science Publishing
2020
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Online Access: | http://dx.doi.org/10.1139/facets-2019-0048 http://www.facetsjournal.com/doi/pdf/10.1139/facets-2019-0048 |
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crcansciencepubl:10.1139/facets-2019-0048 2024-09-15T17:55:53+00:00 A molecular assessment of infectious agents carried by Atlantic salmon at sea and in three eastern Canadian rivers, including aquaculture escapees and North American and European origin wild stocks Teffer, Amy K. Carr, Jonathan Tabata, Amy Schulze, Angela Bradbury, Ian Deschamps, Denise Gillis, Carole-Anne Brunsdon, Eric B. Mordecai, Gideon Miller, Kristina M. Trudeau, Vance L. 2020 http://dx.doi.org/10.1139/facets-2019-0048 http://www.facetsjournal.com/doi/pdf/10.1139/facets-2019-0048 en eng Canadian Science Publishing FACETS volume 5, issue 1, page 234-263 ISSN 2371-1671 journal-article 2020 crcansciencepubl https://doi.org/10.1139/facets-2019-0048 2024-07-25T04:10:04Z Infectious agents are key components of animal ecology and drivers of host population dynamics. Knowledge of their diversity and transmission in the wild is necessary for the management and conservation of host species like Atlantic salmon ( Salmo salar). Although pathogen exchange can occur throughout the salmon life cycle, evidence is lacking to support transmission during population mixing at sea or between farmed and wild salmon due to aquaculture exposure. We tested these hypotheses using a molecular approach that identified infectious agents and transmission potential among sub-adult Atlantic salmon at marine feeding areas and adults in three eastern Canadian rivers with varying aquaculture influence. We used high-throughput qPCR to quantify infection profiles and next generation sequencing to measure genomic variation among viral isolates. We identified 14 agents, including five not yet described as occurring in Eastern Canada. Phylogenetic analysis of piscine orthoreovirus showed homology between isolates from European and North American origin fish at sea, supporting the hypothesis of intercontinental transmission. We found no evidence to support aquaculture influence on wild adult infections, which varied relative to environmental conditions, life stage, and host origin. Our findings identify research opportunities regarding pathogen transmission and biological significance for wild Atlantic salmon populations. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing FACETS 5 1 234 263 |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
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Infectious agents are key components of animal ecology and drivers of host population dynamics. Knowledge of their diversity and transmission in the wild is necessary for the management and conservation of host species like Atlantic salmon ( Salmo salar). Although pathogen exchange can occur throughout the salmon life cycle, evidence is lacking to support transmission during population mixing at sea or between farmed and wild salmon due to aquaculture exposure. We tested these hypotheses using a molecular approach that identified infectious agents and transmission potential among sub-adult Atlantic salmon at marine feeding areas and adults in three eastern Canadian rivers with varying aquaculture influence. We used high-throughput qPCR to quantify infection profiles and next generation sequencing to measure genomic variation among viral isolates. We identified 14 agents, including five not yet described as occurring in Eastern Canada. Phylogenetic analysis of piscine orthoreovirus showed homology between isolates from European and North American origin fish at sea, supporting the hypothesis of intercontinental transmission. We found no evidence to support aquaculture influence on wild adult infections, which varied relative to environmental conditions, life stage, and host origin. Our findings identify research opportunities regarding pathogen transmission and biological significance for wild Atlantic salmon populations. |
author2 |
Trudeau, Vance L. |
format |
Article in Journal/Newspaper |
author |
Teffer, Amy K. Carr, Jonathan Tabata, Amy Schulze, Angela Bradbury, Ian Deschamps, Denise Gillis, Carole-Anne Brunsdon, Eric B. Mordecai, Gideon Miller, Kristina M. |
spellingShingle |
Teffer, Amy K. Carr, Jonathan Tabata, Amy Schulze, Angela Bradbury, Ian Deschamps, Denise Gillis, Carole-Anne Brunsdon, Eric B. Mordecai, Gideon Miller, Kristina M. A molecular assessment of infectious agents carried by Atlantic salmon at sea and in three eastern Canadian rivers, including aquaculture escapees and North American and European origin wild stocks |
author_facet |
Teffer, Amy K. Carr, Jonathan Tabata, Amy Schulze, Angela Bradbury, Ian Deschamps, Denise Gillis, Carole-Anne Brunsdon, Eric B. Mordecai, Gideon Miller, Kristina M. |
author_sort |
Teffer, Amy K. |
title |
A molecular assessment of infectious agents carried by Atlantic salmon at sea and in three eastern Canadian rivers, including aquaculture escapees and North American and European origin wild stocks |
title_short |
A molecular assessment of infectious agents carried by Atlantic salmon at sea and in three eastern Canadian rivers, including aquaculture escapees and North American and European origin wild stocks |
title_full |
A molecular assessment of infectious agents carried by Atlantic salmon at sea and in three eastern Canadian rivers, including aquaculture escapees and North American and European origin wild stocks |
title_fullStr |
A molecular assessment of infectious agents carried by Atlantic salmon at sea and in three eastern Canadian rivers, including aquaculture escapees and North American and European origin wild stocks |
title_full_unstemmed |
A molecular assessment of infectious agents carried by Atlantic salmon at sea and in three eastern Canadian rivers, including aquaculture escapees and North American and European origin wild stocks |
title_sort |
molecular assessment of infectious agents carried by atlantic salmon at sea and in three eastern canadian rivers, including aquaculture escapees and north american and european origin wild stocks |
publisher |
Canadian Science Publishing |
publishDate |
2020 |
url |
http://dx.doi.org/10.1139/facets-2019-0048 http://www.facetsjournal.com/doi/pdf/10.1139/facets-2019-0048 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
FACETS volume 5, issue 1, page 234-263 ISSN 2371-1671 |
op_doi |
https://doi.org/10.1139/facets-2019-0048 |
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FACETS |
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5 |
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1 |
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234 |
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263 |
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1810432100053024768 |