Genetic structure of Patagonian toothfish populations from otolith DNA
The Patagonian toothfish, Dissostichus eleginoides, is a valuable fishery species and has a discontinuous distribution across the Southern Ocean. Identification of the genetic stock structure of toothfish would allow evaluation of the suitability of the spatial scale at which fisheries management op...
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Cambridge University Press
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ftnerc:oai:nora.nerc.ac.uk:514903 2023-05-15T14:14:51+02:00 Genetic structure of Patagonian toothfish populations from otolith DNA Toomey, Lola Welsford, Dirk Appleyard, Sharon A. Polanowski, Andrea Faux, Cassandra Deagle, Bruce E. Belchier, Mark Marthick, James Jarman, Simon 2016-10 http://nora.nerc.ac.uk/id/eprint/514903/ https://doi.org/10.1017/S0954102016000183 unknown Cambridge University Press Toomey, Lola; Welsford, Dirk; Appleyard, Sharon A.; Polanowski, Andrea; Faux, Cassandra; Deagle, Bruce E.; Belchier, Mark; Marthick, James; Jarman, Simon. 2016 Genetic structure of Patagonian toothfish populations from otolith DNA. Antarctic Science, 28 (5). 347-360. https://doi.org/10.1017/S0954102016000183 <https://doi.org/10.1017/S0954102016000183> Publication - Article PeerReviewed 2016 ftnerc https://doi.org/10.1017/S0954102016000183 2023-02-04T19:43:44Z The Patagonian toothfish, Dissostichus eleginoides, is a valuable fishery species and has a discontinuous distribution across the Southern Ocean. Identification of the genetic stock structure of toothfish would allow evaluation of the suitability of the spatial scale at which fisheries management operates. Genetic subdivision seems likely given the species distribution. Population genetics studies of this species have been performed; however, they have been limited by sample size, spatial coverage and/or the type of markers investigated. As a potential solution, we developed methods for extracting toothfish DNA from otoliths that are available in large numbers from collections held at several research institutes. Genetic differentiation between the three oceanic sectors was investigated. Four mitochondrial and four nuclear markers with multiple single nucleotide polymorphisms were sequenced by high throughput sequencing for samples from six locations. Genetic differentiation was found between three sectors with nuclear markers. However, only the Pacific sector was differentiated from other sectors with mitochondrial markers. This study demonstrates the usefulness of otolith DNA as a means of increasing sample sizes for population genetics research of fish. Additionally, the combination of nuclear and mitochondrial markers may allow insight into how the observed differences in movements between male and female toothfish impact population structure. Article in Journal/Newspaper Antarctic Science Patagonian Toothfish Southern Ocean Natural Environment Research Council: NERC Open Research Archive Southern Ocean Pacific Antarctic Science 28 5 347 360 |
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Natural Environment Research Council: NERC Open Research Archive |
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description |
The Patagonian toothfish, Dissostichus eleginoides, is a valuable fishery species and has a discontinuous distribution across the Southern Ocean. Identification of the genetic stock structure of toothfish would allow evaluation of the suitability of the spatial scale at which fisheries management operates. Genetic subdivision seems likely given the species distribution. Population genetics studies of this species have been performed; however, they have been limited by sample size, spatial coverage and/or the type of markers investigated. As a potential solution, we developed methods for extracting toothfish DNA from otoliths that are available in large numbers from collections held at several research institutes. Genetic differentiation between the three oceanic sectors was investigated. Four mitochondrial and four nuclear markers with multiple single nucleotide polymorphisms were sequenced by high throughput sequencing for samples from six locations. Genetic differentiation was found between three sectors with nuclear markers. However, only the Pacific sector was differentiated from other sectors with mitochondrial markers. This study demonstrates the usefulness of otolith DNA as a means of increasing sample sizes for population genetics research of fish. Additionally, the combination of nuclear and mitochondrial markers may allow insight into how the observed differences in movements between male and female toothfish impact population structure. |
format |
Article in Journal/Newspaper |
author |
Toomey, Lola Welsford, Dirk Appleyard, Sharon A. Polanowski, Andrea Faux, Cassandra Deagle, Bruce E. Belchier, Mark Marthick, James Jarman, Simon |
spellingShingle |
Toomey, Lola Welsford, Dirk Appleyard, Sharon A. Polanowski, Andrea Faux, Cassandra Deagle, Bruce E. Belchier, Mark Marthick, James Jarman, Simon Genetic structure of Patagonian toothfish populations from otolith DNA |
author_facet |
Toomey, Lola Welsford, Dirk Appleyard, Sharon A. Polanowski, Andrea Faux, Cassandra Deagle, Bruce E. Belchier, Mark Marthick, James Jarman, Simon |
author_sort |
Toomey, Lola |
title |
Genetic structure of Patagonian toothfish populations from otolith DNA |
title_short |
Genetic structure of Patagonian toothfish populations from otolith DNA |
title_full |
Genetic structure of Patagonian toothfish populations from otolith DNA |
title_fullStr |
Genetic structure of Patagonian toothfish populations from otolith DNA |
title_full_unstemmed |
Genetic structure of Patagonian toothfish populations from otolith DNA |
title_sort |
genetic structure of patagonian toothfish populations from otolith dna |
publisher |
Cambridge University Press |
publishDate |
2016 |
url |
http://nora.nerc.ac.uk/id/eprint/514903/ https://doi.org/10.1017/S0954102016000183 |
geographic |
Southern Ocean Pacific |
geographic_facet |
Southern Ocean Pacific |
genre |
Antarctic Science Patagonian Toothfish Southern Ocean |
genre_facet |
Antarctic Science Patagonian Toothfish Southern Ocean |
op_relation |
Toomey, Lola; Welsford, Dirk; Appleyard, Sharon A.; Polanowski, Andrea; Faux, Cassandra; Deagle, Bruce E.; Belchier, Mark; Marthick, James; Jarman, Simon. 2016 Genetic structure of Patagonian toothfish populations from otolith DNA. Antarctic Science, 28 (5). 347-360. https://doi.org/10.1017/S0954102016000183 <https://doi.org/10.1017/S0954102016000183> |
op_doi |
https://doi.org/10.1017/S0954102016000183 |
container_title |
Antarctic Science |
container_volume |
28 |
container_issue |
5 |
container_start_page |
347 |
op_container_end_page |
360 |
_version_ |
1766287229567631360 |