Growth analysis and age validation of a deepwater Arctic fish, the Greenland halibut (Reinhardtius hippoglossoides)
The accuracy of age interpretations on a deep-sea, Arctic fish species, the Greenland halibut (Reinhardtius hippoglossoides) was tested using several age validation methods. Consistent annual growth increments were either not formed or not visible in either whole or sectioned otoliths from three fis...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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2008
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Online Access: | https://orbit.dtu.dk/en/publications/9140c08b-cbde-498e-9062-5ede62843f10 https://doi.org/10.1139/F08-030 |
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ftdtupubl:oai:pure.atira.dk:publications/9140c08b-cbde-498e-9062-5ede62843f10 2024-04-28T08:04:26+00:00 Growth analysis and age validation of a deepwater Arctic fish, the Greenland halibut (Reinhardtius hippoglossoides) Treble, M.A. Campana, S.E. Wastle, R.E. Jones, C.M. Boje, Jesper 2008 https://orbit.dtu.dk/en/publications/9140c08b-cbde-498e-9062-5ede62843f10 https://doi.org/10.1139/F08-030 eng eng https://orbit.dtu.dk/en/publications/9140c08b-cbde-498e-9062-5ede62843f10 info:eu-repo/semantics/restrictedAccess Treble , M A , Campana , S E , Wastle , R E , Jones , C M & Boje , J 2008 , ' Growth analysis and age validation of a deepwater Arctic fish, the Greenland halibut (Reinhardtius hippoglossoides) ' , Canadian Journal of Fisheries and Aquatic Sciences , vol. 65 , no. 6 , pp. 1047-1059 . https://doi.org/10.1139/F08-030 Erhvervsfiskeri article 2008 ftdtupubl https://doi.org/10.1139/F08-030 2024-04-03T14:50:47Z The accuracy of age interpretations on a deep-sea, Arctic fish species, the Greenland halibut (Reinhardtius hippoglossoides) was tested using several age validation methods. Consistent annual growth increments were either not formed or not visible in either whole or sectioned otoliths from three fish marked with oxytetracyline and recaptured after 2-4 years at liberty. Bomb radiocarbon assays based on a local reference chronology indicated that both whole and sectioned otoliths underestimated age by 1-15 years, with an average of 6 years. Growth rates estimated using the tag recapture model GROTAG were consistent with growth rates based on the radiocarbon assays and were less than half that of previously reported growth rates. The failure of otolith sections to provide an accurate age is unusual, but may be symptomatic of very slow-growing species with unusually shaped otoliths. Greenland halibut living in the deep-sea, Arctic environment are slower growing and longer lived than previously suspected, suggesting that the age-structured basis for current fisheries management warrants careful examination. Our results highlight the importance of using rigorous tests of ageing accuracy for exploited species and confirm that such age validation methods can be applied successfully in challenging environments such as the deep sea or the Arctic. Article in Journal/Newspaper Arctic Arctic Greenland Technical University of Denmark: DTU Orbit Canadian Journal of Fisheries and Aquatic Sciences 65 6 1047 1059 |
institution |
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Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Erhvervsfiskeri |
spellingShingle |
Erhvervsfiskeri Treble, M.A. Campana, S.E. Wastle, R.E. Jones, C.M. Boje, Jesper Growth analysis and age validation of a deepwater Arctic fish, the Greenland halibut (Reinhardtius hippoglossoides) |
topic_facet |
Erhvervsfiskeri |
description |
The accuracy of age interpretations on a deep-sea, Arctic fish species, the Greenland halibut (Reinhardtius hippoglossoides) was tested using several age validation methods. Consistent annual growth increments were either not formed or not visible in either whole or sectioned otoliths from three fish marked with oxytetracyline and recaptured after 2-4 years at liberty. Bomb radiocarbon assays based on a local reference chronology indicated that both whole and sectioned otoliths underestimated age by 1-15 years, with an average of 6 years. Growth rates estimated using the tag recapture model GROTAG were consistent with growth rates based on the radiocarbon assays and were less than half that of previously reported growth rates. The failure of otolith sections to provide an accurate age is unusual, but may be symptomatic of very slow-growing species with unusually shaped otoliths. Greenland halibut living in the deep-sea, Arctic environment are slower growing and longer lived than previously suspected, suggesting that the age-structured basis for current fisheries management warrants careful examination. Our results highlight the importance of using rigorous tests of ageing accuracy for exploited species and confirm that such age validation methods can be applied successfully in challenging environments such as the deep sea or the Arctic. |
format |
Article in Journal/Newspaper |
author |
Treble, M.A. Campana, S.E. Wastle, R.E. Jones, C.M. Boje, Jesper |
author_facet |
Treble, M.A. Campana, S.E. Wastle, R.E. Jones, C.M. Boje, Jesper |
author_sort |
Treble, M.A. |
title |
Growth analysis and age validation of a deepwater Arctic fish, the Greenland halibut (Reinhardtius hippoglossoides) |
title_short |
Growth analysis and age validation of a deepwater Arctic fish, the Greenland halibut (Reinhardtius hippoglossoides) |
title_full |
Growth analysis and age validation of a deepwater Arctic fish, the Greenland halibut (Reinhardtius hippoglossoides) |
title_fullStr |
Growth analysis and age validation of a deepwater Arctic fish, the Greenland halibut (Reinhardtius hippoglossoides) |
title_full_unstemmed |
Growth analysis and age validation of a deepwater Arctic fish, the Greenland halibut (Reinhardtius hippoglossoides) |
title_sort |
growth analysis and age validation of a deepwater arctic fish, the greenland halibut (reinhardtius hippoglossoides) |
publishDate |
2008 |
url |
https://orbit.dtu.dk/en/publications/9140c08b-cbde-498e-9062-5ede62843f10 https://doi.org/10.1139/F08-030 |
genre |
Arctic Arctic Greenland |
genre_facet |
Arctic Arctic Greenland |
op_source |
Treble , M A , Campana , S E , Wastle , R E , Jones , C M & Boje , J 2008 , ' Growth analysis and age validation of a deepwater Arctic fish, the Greenland halibut (Reinhardtius hippoglossoides) ' , Canadian Journal of Fisheries and Aquatic Sciences , vol. 65 , no. 6 , pp. 1047-1059 . https://doi.org/10.1139/F08-030 |
op_relation |
https://orbit.dtu.dk/en/publications/9140c08b-cbde-498e-9062-5ede62843f10 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1139/F08-030 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
65 |
container_issue |
6 |
container_start_page |
1047 |
op_container_end_page |
1059 |
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1797575103567888384 |