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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Online Access: | http://dx.doi.org/10.1139/f00-222 http://www.nrcresearchpress.com/doi/pdf/10.1139/f00-222 |
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crcansciencepubl:10.1139/f00-222 2024-09-15T17:52:27+00:00 Reconstructing the stock-recruit relationship for Northeast Arctic cod using a bioenergetic index of reproductive potential Marshall, C Tara Yaragina, Nathalia A Ådlandsvik, Bjørn Dolgov, Andrey V 2000 http://dx.doi.org/10.1139/f00-222 http://www.nrcresearchpress.com/doi/pdf/10.1139/f00-222 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 57, issue 12, page 2433-2442 ISSN 0706-652X 1205-7533 journal-article 2000 crcansciencepubl https://doi.org/10.1139/f00-222 2024-08-01T04:10:02Z 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 Northeast Arctic cod Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 57 12 2433 2442 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
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, Nathalia A Ådlandsvik, Bjørn Dolgov, Andrey V |
spellingShingle |
Marshall, C Tara Yaragina, Nathalia A Ådlandsvik, Bjørn Dolgov, Andrey V Reconstructing the stock-recruit relationship for Northeast Arctic cod using a bioenergetic index of reproductive potential |
author_facet |
Marshall, C Tara Yaragina, Nathalia 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 |
publisher |
Canadian Science Publishing |
publishDate |
2000 |
url |
http://dx.doi.org/10.1139/f00-222 http://www.nrcresearchpress.com/doi/pdf/10.1139/f00-222 |
genre |
Arctic cod Northeast Arctic cod |
genre_facet |
Arctic cod Northeast Arctic cod |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 57, issue 12, page 2433-2442 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f00-222 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
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57 |
container_issue |
12 |
container_start_page |
2433 |
op_container_end_page |
2442 |
_version_ |
1810294485097119744 |