Genetic identification of farmed and wild Atlantic cod, Gadus morhua, in coastal Norway
Abstract Glover, K. A., Dahle, G., and Jørstad, K. E. 2011. Genetic identification of farmed and wild Atlantic cod, Gadus morhua, in coastal Norway. – ICES Journal of Marine Science, 68: 901–910. Each year thousands of Atlantic cod escape from Norwegian fish farms. To investigate the potential for t...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsr048 http://academic.oup.com/icesjms/article-pdf/68/5/901/29139664/fsr048.pdf |
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croxfordunivpr:10.1093/icesjms/fsr048 2024-05-19T07:37:05+00:00 Genetic identification of farmed and wild Atlantic cod, Gadus morhua, in coastal Norway Glover, Kevin A. Dahle, Geir Jørstad, Knut E. 2011 http://dx.doi.org/10.1093/icesjms/fsr048 http://academic.oup.com/icesjms/article-pdf/68/5/901/29139664/fsr048.pdf en eng Oxford University Press (OUP) http://creativecommons.org/licenses/by-nc/2.5/ ICES Journal of Marine Science volume 68, issue 5, page 901-910 ISSN 1095-9289 1054-3139 journal-article 2011 croxfordunivpr https://doi.org/10.1093/icesjms/fsr048 2024-05-02T09:32:52Z Abstract Glover, K. A., Dahle, G., and Jørstad, K. E. 2011. Genetic identification of farmed and wild Atlantic cod, Gadus morhua, in coastal Norway. – ICES Journal of Marine Science, 68: 901–910. Each year thousands of Atlantic cod escape from Norwegian fish farms. To investigate the potential for the genetic identification of farmed–escaped cod in the wild, three case studies were examined. Samples of farmed, recaptured farmed escapees, and wild cod were screened for ten microsatellite loci and the Pan I locus. Variable genetic differences were observed among cod sampled from different farms and cages (pairwise FST = 0.0–0.1), and in two of the case studies, the most likely farm(s) of origin for most of the recaptured escapees were identified. In case study 2, wild cod were genetically distinct from both farmed fish (pairwise FST = 0.026–0.06) and recaptured farmed–escaped cod (pairwise FST = 0.029 and 0.039), demonstrating the potential to detect genetic interactions in that fjord. Genetic identification of escapees was more challenging in case study 3, and some morphologically characterized wild cod were found to most likely represent farmed escapees. It is concluded that where cod are farmed in the same region as their own parents/grandparents were initially sourced, or where farmed escapees originate from multiple sources, quantifying genetic interactions with wild populations will be challenging with neutral or nearly neutral markers such as microsatellites. Article in Journal/Newspaper atlantic cod Gadus morhua Oxford University Press ICES Journal of Marine Science 68 5 901 910 |
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Oxford University Press |
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description |
Abstract Glover, K. A., Dahle, G., and Jørstad, K. E. 2011. Genetic identification of farmed and wild Atlantic cod, Gadus morhua, in coastal Norway. – ICES Journal of Marine Science, 68: 901–910. Each year thousands of Atlantic cod escape from Norwegian fish farms. To investigate the potential for the genetic identification of farmed–escaped cod in the wild, three case studies were examined. Samples of farmed, recaptured farmed escapees, and wild cod were screened for ten microsatellite loci and the Pan I locus. Variable genetic differences were observed among cod sampled from different farms and cages (pairwise FST = 0.0–0.1), and in two of the case studies, the most likely farm(s) of origin for most of the recaptured escapees were identified. In case study 2, wild cod were genetically distinct from both farmed fish (pairwise FST = 0.026–0.06) and recaptured farmed–escaped cod (pairwise FST = 0.029 and 0.039), demonstrating the potential to detect genetic interactions in that fjord. Genetic identification of escapees was more challenging in case study 3, and some morphologically characterized wild cod were found to most likely represent farmed escapees. It is concluded that where cod are farmed in the same region as their own parents/grandparents were initially sourced, or where farmed escapees originate from multiple sources, quantifying genetic interactions with wild populations will be challenging with neutral or nearly neutral markers such as microsatellites. |
format |
Article in Journal/Newspaper |
author |
Glover, Kevin A. Dahle, Geir Jørstad, Knut E. |
spellingShingle |
Glover, Kevin A. Dahle, Geir Jørstad, Knut E. Genetic identification of farmed and wild Atlantic cod, Gadus morhua, in coastal Norway |
author_facet |
Glover, Kevin A. Dahle, Geir Jørstad, Knut E. |
author_sort |
Glover, Kevin A. |
title |
Genetic identification of farmed and wild Atlantic cod, Gadus morhua, in coastal Norway |
title_short |
Genetic identification of farmed and wild Atlantic cod, Gadus morhua, in coastal Norway |
title_full |
Genetic identification of farmed and wild Atlantic cod, Gadus morhua, in coastal Norway |
title_fullStr |
Genetic identification of farmed and wild Atlantic cod, Gadus morhua, in coastal Norway |
title_full_unstemmed |
Genetic identification of farmed and wild Atlantic cod, Gadus morhua, in coastal Norway |
title_sort |
genetic identification of farmed and wild atlantic cod, gadus morhua, in coastal norway |
publisher |
Oxford University Press (OUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1093/icesjms/fsr048 http://academic.oup.com/icesjms/article-pdf/68/5/901/29139664/fsr048.pdf |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
ICES Journal of Marine Science volume 68, issue 5, page 901-910 ISSN 1095-9289 1054-3139 |
op_rights |
http://creativecommons.org/licenses/by-nc/2.5/ |
op_doi |
https://doi.org/10.1093/icesjms/fsr048 |
container_title |
ICES Journal of Marine Science |
container_volume |
68 |
container_issue |
5 |
container_start_page |
901 |
op_container_end_page |
910 |
_version_ |
1799476316812083200 |