Tracing the genetic impact of farmed turbot Scophthalmus maximus on wild populations
The impact of escapees from aquaculture is of general concern for the sustainability of natural resources. Turbot Scophthalmus maximus is a marine flatfish of great commercial value whose land-based aquaculture started approx. 40 yr ago; hence, a low impact of escapees is expected on wild population...
Published in: | Aquaculture Environment Interactions |
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Language: | English |
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2018
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Online Access: | https://www.vliz.be/imisdocs/publications/326450.pdf |
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ftvliz:oai:oma.vliz.be:308019 2023-05-15T17:41:35+02:00 Tracing the genetic impact of farmed turbot Scophthalmus maximus on wild populations Prado, F.D. Vera, M. Hermida, M. Blanco, A. Bouza, C. Maes, G.E. Volckaert, F.A.M. AquaTrace Consortium Martinez, P. 2018 application/pdf https://www.vliz.be/imisdocs/publications/326450.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000449166000002 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.3354/aei00282 https://www.vliz.be/imisdocs/publications/326450.pdf info:eu-repo/semantics/openAccess %3Ci%3EAquaculture+Environment+Interactions+10%3C%2Fi%3E%3A+447-463.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.3354%2Faei00282%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.3354%2Faei00282%3C%2Fa%3E Scophthalmus maximus info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftvliz https://doi.org/10.3354/aei00282 2022-05-01T11:17:05Z The impact of escapees from aquaculture is of general concern for the sustainability of natural resources. Turbot Scophthalmus maximus is a marine flatfish of great commercial value whose land-based aquaculture started approx. 40 yr ago; hence, a low impact of escapees is expected on wild populations. However, enhancement of wild stocks using farmed turbot has been carried out along the Northeast Atlantic coasts in the last decades. Recently, a broad panel of single nucleotide polymorphism (SNP) markers (755 SNPs; 1 SNP Mb -1 ) has been used to evaluate the genetic structure of turbot throughout its distribution range, constituting the baseline to evaluate the impact of farmed fish in the wild. Two distinct origins were identified for farmed turbot (F _ORI1 and F _ORI2 F ST = 0.049), which differentiated from wild populations after 5 generations of selection (average F ST = 0.059), and consistent evidence of adaptation to domestication was detected. A notable proportion of fish of farmed ancestry was detected in the wild (15.5%), mainly in the North Sea, where restocking activities have taken place, determining genetic introgression in wild populations. Conversely, effects of land-based aquaculture appear negligible. A simulation exercise supported panels of 40 and 80 SNPs to identify fishes of F _ORI1 and F _ORI2 ancestry in the wild, respectively. Application to empirical data showed an assignment success (wild/farmed ancestry) of approx. 95% in comparison with the full SNP dataset. The SNP tools will be useful to monitor turbot of farmed ancestry in the wild, which might represent a risk, considering the lower fitness of farmed individuals. Article in Journal/Newspaper Northeast Atlantic Scophthalmus maximus Turbot Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Aquaculture Environment Interactions 10 447 463 |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
topic |
Scophthalmus maximus |
spellingShingle |
Scophthalmus maximus Prado, F.D. Vera, M. Hermida, M. Blanco, A. Bouza, C. Maes, G.E. Volckaert, F.A.M. AquaTrace Consortium Martinez, P. Tracing the genetic impact of farmed turbot Scophthalmus maximus on wild populations |
topic_facet |
Scophthalmus maximus |
description |
The impact of escapees from aquaculture is of general concern for the sustainability of natural resources. Turbot Scophthalmus maximus is a marine flatfish of great commercial value whose land-based aquaculture started approx. 40 yr ago; hence, a low impact of escapees is expected on wild populations. However, enhancement of wild stocks using farmed turbot has been carried out along the Northeast Atlantic coasts in the last decades. Recently, a broad panel of single nucleotide polymorphism (SNP) markers (755 SNPs; 1 SNP Mb -1 ) has been used to evaluate the genetic structure of turbot throughout its distribution range, constituting the baseline to evaluate the impact of farmed fish in the wild. Two distinct origins were identified for farmed turbot (F _ORI1 and F _ORI2 F ST = 0.049), which differentiated from wild populations after 5 generations of selection (average F ST = 0.059), and consistent evidence of adaptation to domestication was detected. A notable proportion of fish of farmed ancestry was detected in the wild (15.5%), mainly in the North Sea, where restocking activities have taken place, determining genetic introgression in wild populations. Conversely, effects of land-based aquaculture appear negligible. A simulation exercise supported panels of 40 and 80 SNPs to identify fishes of F _ORI1 and F _ORI2 ancestry in the wild, respectively. Application to empirical data showed an assignment success (wild/farmed ancestry) of approx. 95% in comparison with the full SNP dataset. The SNP tools will be useful to monitor turbot of farmed ancestry in the wild, which might represent a risk, considering the lower fitness of farmed individuals. |
format |
Article in Journal/Newspaper |
author |
Prado, F.D. Vera, M. Hermida, M. Blanco, A. Bouza, C. Maes, G.E. Volckaert, F.A.M. AquaTrace Consortium Martinez, P. |
author_facet |
Prado, F.D. Vera, M. Hermida, M. Blanco, A. Bouza, C. Maes, G.E. Volckaert, F.A.M. AquaTrace Consortium Martinez, P. |
author_sort |
Prado, F.D. |
title |
Tracing the genetic impact of farmed turbot Scophthalmus maximus on wild populations |
title_short |
Tracing the genetic impact of farmed turbot Scophthalmus maximus on wild populations |
title_full |
Tracing the genetic impact of farmed turbot Scophthalmus maximus on wild populations |
title_fullStr |
Tracing the genetic impact of farmed turbot Scophthalmus maximus on wild populations |
title_full_unstemmed |
Tracing the genetic impact of farmed turbot Scophthalmus maximus on wild populations |
title_sort |
tracing the genetic impact of farmed turbot scophthalmus maximus on wild populations |
publishDate |
2018 |
url |
https://www.vliz.be/imisdocs/publications/326450.pdf |
genre |
Northeast Atlantic Scophthalmus maximus Turbot |
genre_facet |
Northeast Atlantic Scophthalmus maximus Turbot |
op_source |
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op_relation |
info:eu-repo/semantics/altIdentifier/wos/000449166000002 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.3354/aei00282 https://www.vliz.be/imisdocs/publications/326450.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/aei00282 |
container_title |
Aquaculture Environment Interactions |
container_volume |
10 |
container_start_page |
447 |
op_container_end_page |
463 |
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1766143231984140288 |