Reconstructing the stock–recruit relationship for Northeast Arctic cod using a bioenergetic index of reproductive potential
Correlation and simulation analyses suggest that, for the Northeast Arctic (NA) cod stock, the total lipid energy (TLE (kJ)) contained in the livers of mature females is proportional to total egg production, making TLE a potential predictor of recruitment. Accordingly, the TLE of NA cod was estimate...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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Online Access: | http://hdl.handle.net/11250/108519 https://doi.org/10.1139/f00-222 |
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ftimr:oai:imr.brage.unit.no:11250/108519 2023-05-15T14:30:27+02:00 Reconstructing the stock–recruit relationship for Northeast Arctic cod using a bioenergetic index of reproductive potential Marshall, C. Tara Yaragina, Natalia A. Ådlandsvik, Bjørn Dolgov, Andrey V. 2000 217818 bytes application/pdf http://hdl.handle.net/11250/108519 https://doi.org/10.1139/f00-222 eng eng urn:issn:0706-652X http://hdl.handle.net/11250/108519 http://dx.doi.org/10.1139/f00-222 2433-2442 57 Canadian Journal of Fisheries and Aquatic Sciences 12 Barents Sea Barentshavet cod reproduction torsk reproduksjon Journal article Peer reviewed 2000 ftimr https://doi.org/10.1139/f00-222 2021-09-23T20:16:00Z Correlation and simulation analyses suggest that, for the Northeast Arctic (NA) cod stock, the total lipid energy (TLE (kJ)) contained in the livers of mature females is proportional to total egg production, making TLE a potential predictor of recruitment. Accordingly, the TLE of NA cod was estimated for a 51-year time period (1946–1996), using estimates of numbers at length derived from virtual population analysis, modelled values of proportion mature and weight at length, and observed values of the liver-condition index. A significant linear relationship between TLE and recruitment to age 3 was observed. The temporal trend in TLE suggests that the reproductive potential of the NA cod stock has been in decline since the mid-1970s. A multiple-regression model that included TLE, mean temperature, and mean alongshore wind stress as independent variables explained approximately 43% of the variation in recruitment. Reconstructing stock–recruit relationships using more sensitive measures of reproductive potential is the first step in resolving environmental effects on recruitment and in developing biological reference points that are more effective in stock conservation. Article in Journal/Newspaper Arctic cod Arctic Barents Sea Barentshav* Northeast Arctic cod Institute for Marine Research: Brage IMR Arctic Barents Sea Canadian Journal of Fisheries and Aquatic Sciences 57 12 2433 2442 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
Barents Sea Barentshavet cod reproduction torsk reproduksjon |
spellingShingle |
Barents Sea Barentshavet cod reproduction torsk reproduksjon Marshall, C. Tara Yaragina, Natalia A. Ådlandsvik, Bjørn Dolgov, Andrey V. Reconstructing the stock–recruit relationship for Northeast Arctic cod using a bioenergetic index of reproductive potential |
topic_facet |
Barents Sea Barentshavet cod reproduction torsk reproduksjon |
description |
Correlation and simulation analyses suggest that, for the Northeast Arctic (NA) cod stock, the total lipid energy (TLE (kJ)) contained in the livers of mature females is proportional to total egg production, making TLE a potential predictor of recruitment. Accordingly, the TLE of NA cod was estimated for a 51-year time period (1946–1996), using estimates of numbers at length derived from virtual population analysis, modelled values of proportion mature and weight at length, and observed values of the liver-condition index. A significant linear relationship between TLE and recruitment to age 3 was observed. The temporal trend in TLE suggests that the reproductive potential of the NA cod stock has been in decline since the mid-1970s. A multiple-regression model that included TLE, mean temperature, and mean alongshore wind stress as independent variables explained approximately 43% of the variation in recruitment. Reconstructing stock–recruit relationships using more sensitive measures of reproductive potential is the first step in resolving environmental effects on recruitment and in developing biological reference points that are more effective in stock conservation. |
format |
Article in Journal/Newspaper |
author |
Marshall, C. Tara Yaragina, Natalia A. Ådlandsvik, Bjørn Dolgov, Andrey V. |
author_facet |
Marshall, C. Tara Yaragina, Natalia A. Ådlandsvik, Bjørn Dolgov, Andrey V. |
author_sort |
Marshall, C. Tara |
title |
Reconstructing the stock–recruit relationship for Northeast Arctic cod using a bioenergetic index of reproductive potential |
title_short |
Reconstructing the stock–recruit relationship for Northeast Arctic cod using a bioenergetic index of reproductive potential |
title_full |
Reconstructing the stock–recruit relationship for Northeast Arctic cod using a bioenergetic index of reproductive potential |
title_fullStr |
Reconstructing the stock–recruit relationship for Northeast Arctic cod using a bioenergetic index of reproductive potential |
title_full_unstemmed |
Reconstructing the stock–recruit relationship for Northeast Arctic cod using a bioenergetic index of reproductive potential |
title_sort |
reconstructing the stock–recruit relationship for northeast arctic cod using a bioenergetic index of reproductive potential |
publishDate |
2000 |
url |
http://hdl.handle.net/11250/108519 https://doi.org/10.1139/f00-222 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic cod Arctic Barents Sea Barentshav* Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Barents Sea Barentshav* Northeast Arctic cod |
op_source |
2433-2442 57 Canadian Journal of Fisheries and Aquatic Sciences 12 |
op_relation |
urn:issn:0706-652X http://hdl.handle.net/11250/108519 http://dx.doi.org/10.1139/f00-222 |
op_doi |
https://doi.org/10.1139/f00-222 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
57 |
container_issue |
12 |
container_start_page |
2433 |
op_container_end_page |
2442 |
_version_ |
1766304301920026624 |