Extensive hybridization following a large escape of domesticated Atlantic salmon in the Northwest Atlantic

Brendan F. Wringe; Nicholas W. Jeffery; Ryan R.E. Stanley; Lorraine C. Hamilton; Eric C. Anderson; Ian A. Fleming; Carole Grant; J. Brian Dempson; Geoff Veinott; Steven J. Duffy; Ian R. Bradbury

doi:10.1038/s42003-018-0112-9

Extensive hybridization following a large escape of domesticated Atlantic salmon in the Northwest Atlantic

Brendan F. Wringe, Nicholas W. Jeffery, Ryan R.E. Stanley, Lorraine C. Hamilton, Eric C. Anderson, Ian A. Fleming, Carole Grant, J. Brian Dempson, Geoff Veinott, Steven J. Duffy, Ian R. Bradbury

Medicine

Résultat de recherche: Article › examen par les pairs

75 Citations (Scopus)

Résumé

Domestication is rife with episodes of interbreeding between cultured and wild populations, potentially challenging adaptive variation in the wild. In Atlantic salmon, Salmo salar, the number of domesticated individuals far exceeds wild individuals, and escape events occur regularly, yet evidence of the magnitude and geographic scale of interbreeding resulting from individual escape events is lacking. We screened juvenile Atlantic salmon using 95 single nucleotide polymorphisms following a single, large aquaculture escape in the Northwest Atlantic and report the landscape-scale detection of hybrid and feral salmon (27.1%, 17/18 rivers). Hybrids were reproductively viable, and observed at higher frequency in smaller wild populations. Repeated annual sampling of this cohort revealed decreases in the presence of hybrid and feral offspring over time. These results link previous observations of escaped salmon in rivers with reports of population genetic change, and demonstrate the potential negative consequences of escapes from net-pen aquaculture on wild populations.

Langue d'origine	English
Numéro d'article	108
Journal	Communications Biology
Volume	1
Numéro de publication	1
DOI	https://doi.org/10.1038/s42003-018-0112-9
Statut de publication	Published - déc. 1 2018

Note bibliographique

Funding Information:
The authors wish to thank Laura K. Weir, Paul Bentzen, and Sarah J. Lehnert for helpful and insightful comments on previous versions of this manuscript. Staff of DFO Salmonids section Newfoundland Region were responsible for the collection of juvenile tissue samples. Acquisition of aquaculture salmon baseline samples was facilitated by G. Perry, C. Hendry, DFO Aquaculture section Newfoundland Region, and by industry partners Cooke Aquaculture and Northern Harvest Sea Farms. We also thank the staff of the Aquatic Biotechnology Laboratory of the Bedford Institute of Oceanography for their work in the SNP genotyping. This study was funded through the Program for Aquaculture Regulatory Research of Fisheries and Oceans Canada, the Genomics Research and Development Initiative of Canada, as well as the National Sciences and Engineering Research Council of Canada, and support from the Atlantic Salmon Federation.

Publisher Copyright:
© 2018, The Author(s).

ASJC Scopus Subject Areas

Medicine (miscellaneous)
General Biochemistry,Genetics and Molecular Biology
General Agricultural and Biological Sciences

PubMed: MeSH publication types

Journal Article

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10.1038/s42003-018-0112-9

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Wringe, B. F., Jeffery, N. W., Stanley, R. R. E., Hamilton, L. C., Anderson, E. C., Fleming, I. A., Grant, C., Dempson, J. B., Veinott, G., Duffy, S. J., & Bradbury, I. R. (2018). Extensive hybridization following a large escape of domesticated Atlantic salmon in the Northwest Atlantic. Communications Biology, 1(1), Article 108. https://doi.org/10.1038/s42003-018-0112-9

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abstract = "Domestication is rife with episodes of interbreeding between cultured and wild populations, potentially challenging adaptive variation in the wild. In Atlantic salmon, Salmo salar, the number of domesticated individuals far exceeds wild individuals, and escape events occur regularly, yet evidence of the magnitude and geographic scale of interbreeding resulting from individual escape events is lacking. We screened juvenile Atlantic salmon using 95 single nucleotide polymorphisms following a single, large aquaculture escape in the Northwest Atlantic and report the landscape-scale detection of hybrid and feral salmon (27.1%, 17/18 rivers). Hybrids were reproductively viable, and observed at higher frequency in smaller wild populations. Repeated annual sampling of this cohort revealed decreases in the presence of hybrid and feral offspring over time. These results link previous observations of escaped salmon in rivers with reports of population genetic change, and demonstrate the potential negative consequences of escapes from net-pen aquaculture on wild populations.",

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note = "Funding Information: The authors wish to thank Laura K. Weir, Paul Bentzen, and Sarah J. Lehnert for helpful and insightful comments on previous versions of this manuscript. Staff of DFO Salmonids section Newfoundland Region were responsible for the collection of juvenile tissue samples. Acquisition of aquaculture salmon baseline samples was facilitated by G. Perry, C. Hendry, DFO Aquaculture section Newfoundland Region, and by industry partners Cooke Aquaculture and Northern Harvest Sea Farms. We also thank the staff of the Aquatic Biotechnology Laboratory of the Bedford Institute of Oceanography for their work in the SNP genotyping. This study was funded through the Program for Aquaculture Regulatory Research of Fisheries and Oceans Canada, the Genomics Research and Development Initiative of Canada, as well as the National Sciences and Engineering Research Council of Canada, and support from the Atlantic Salmon Federation. Publisher Copyright: {\textcopyright} 2018, The Author(s).",

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AU - Veinott, Geoff

AU - Duffy, Steven J.

AU - Bradbury, Ian R.

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N2 - Domestication is rife with episodes of interbreeding between cultured and wild populations, potentially challenging adaptive variation in the wild. In Atlantic salmon, Salmo salar, the number of domesticated individuals far exceeds wild individuals, and escape events occur regularly, yet evidence of the magnitude and geographic scale of interbreeding resulting from individual escape events is lacking. We screened juvenile Atlantic salmon using 95 single nucleotide polymorphisms following a single, large aquaculture escape in the Northwest Atlantic and report the landscape-scale detection of hybrid and feral salmon (27.1%, 17/18 rivers). Hybrids were reproductively viable, and observed at higher frequency in smaller wild populations. Repeated annual sampling of this cohort revealed decreases in the presence of hybrid and feral offspring over time. These results link previous observations of escaped salmon in rivers with reports of population genetic change, and demonstrate the potential negative consequences of escapes from net-pen aquaculture on wild populations.

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Extensive hybridization following a large escape of domesticated Atlantic salmon in the Northwest Atlantic

Résumé

Note bibliographique

ASJC Scopus Subject Areas

PubMed: MeSH publication types

Accès au document

Autres fichiers et liens

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