Abstract
Hybridization between wild and escaped cultured Atlantic salmon (Salmo salar) can threaten the stability and persistence of locally adapted wild populations. Here we describe the development and validation of a genomic-based approach to quantify recent hybridization between escapee and wild salmon in the western Atlantic. Based on genome-wide single nucleotide polymorphism (SNP) scans of wild and cultured salmon, collectively diagnostic panels were created for Newfoundland and the Canadian Maritimes. These panels were capable of both discriminating hybrids from nonhybrids and of correctly assigning individuals to hybrid class (i.e., pure wild, pure farm, F1,F2, and backcrosses) with a high degree of accuracy (Newfoundland 96 SNPs > 90%, Maritimes 720 SNPs > 80%). These genomic panels permit the assessment of the impacts of past and future farmed salmon escape events on wild populations and can inform the protection and conservation of wild Atlantic salmon genetic integrity in the western Atlantic.
| Original language | English |
|---|---|
| Pages (from-to) | 695-704 |
| Number of pages | 10 |
| Journal | Canadian Journal of Fisheries and Aquatic Sciences |
| Volume | 76 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2019 |
| Externally published | Yes |
Bibliographical note
Funding Information: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. Funding was provided by the Program for Aquaculture Regulatory Research of Fisheries and Oceans Canada, the Genomics Research and Development Initiative of Canada, as well as the Natural Sciences and Engineering Research Council of Canada, and support from the Atlantic Salmon Federation.
Funding Information:
Acquisition of aquaculture salmon baseline samples was facili-tated 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. Funding was provided by the Program for Aquaculture Regulatory Research of Fisheries and Oceans Canada, the Genomics Research and Development Initiative of Canada, as well as the Natural Sciences and Engineering Research Council of Canada, and support from the Atlantic Salmon Federation.
Publisher Copyright:
© 2019, Canadian Science Publishing. All rights reserved.
ASJC Scopus Subject Areas
- Ecology, Evolution, Behavior and Systematics
- Aquatic Science