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 o...
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Online Access: | https://doi.org/10.1017/S0954102016000183 http://ecite.utas.edu.au/115109 |
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ftunivtasecite:oai:ecite.utas.edu.au:115109 2023-05-15T14:14:52+02:00 Genetic structure of Patagonian toothfish populations from otolith DNA Toomey, L Welsford, D Appleyard, SA Polanowski, A Faux, C Deagle, BE Belchier, M Marthick, J Jarman, S 2016 https://doi.org/10.1017/S0954102016000183 http://ecite.utas.edu.au/115109 en eng Cambridge University Press http://dx.doi.org/10.1017/S0954102016000183 Toomey, L and Welsford, D and Appleyard, SA and Polanowski, A and Faux, C and Deagle, BE and Belchier, M and Marthick, J and Jarman, S, Genetic structure of Patagonian toothfish populations from otolith DNA, Antarctic Science, 28, (5) pp. 347-360. ISSN 0954-1020 (2016) [Refereed Article] http://ecite.utas.edu.au/115109 Agricultural and Veterinary Sciences Fisheries Sciences Fish Physiology and Genetics Refereed Article PeerReviewed 2016 ftunivtasecite https://doi.org/10.1017/S0954102016000183 2019-12-13T22:14:55Z 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 eCite UTAS (University of Tasmania) Pacific Southern Ocean Antarctic Science 28 5 347 360 |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
language |
English |
topic |
Agricultural and Veterinary Sciences Fisheries Sciences Fish Physiology and Genetics |
spellingShingle |
Agricultural and Veterinary Sciences Fisheries Sciences Fish Physiology and Genetics Toomey, L Welsford, D Appleyard, SA Polanowski, A Faux, C Deagle, BE Belchier, M Marthick, J Jarman, S Genetic structure of Patagonian toothfish populations from otolith DNA |
topic_facet |
Agricultural and Veterinary Sciences Fisheries Sciences Fish Physiology and Genetics |
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, L Welsford, D Appleyard, SA Polanowski, A Faux, C Deagle, BE Belchier, M Marthick, J Jarman, S |
author_facet |
Toomey, L Welsford, D Appleyard, SA Polanowski, A Faux, C Deagle, BE Belchier, M Marthick, J Jarman, S |
author_sort |
Toomey, L |
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 |
https://doi.org/10.1017/S0954102016000183 http://ecite.utas.edu.au/115109 |
geographic |
Pacific Southern Ocean |
geographic_facet |
Pacific Southern Ocean |
genre |
Antarctic Science Patagonian Toothfish Southern Ocean |
genre_facet |
Antarctic Science Patagonian Toothfish Southern Ocean |
op_relation |
http://dx.doi.org/10.1017/S0954102016000183 Toomey, L and Welsford, D and Appleyard, SA and Polanowski, A and Faux, C and Deagle, BE and Belchier, M and Marthick, J and Jarman, S, Genetic structure of Patagonian toothfish populations from otolith DNA, Antarctic Science, 28, (5) pp. 347-360. ISSN 0954-1020 (2016) [Refereed Article] http://ecite.utas.edu.au/115109 |
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_ |
1766287237357502464 |