Egg mortality of northeast Arctic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus)†
Abstract High and variable mortality during the egg and larval stages is thought to be an important source of interannual variability in stock size in many marine fish. However, quantitative information about the mortality during these life stages, especially interannual variability, is sparse. Here...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fst007 http://academic.oup.com/icesjms/article-pdf/71/5/1129/29145823/fst007.pdf |
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croxfordunivpr:10.1093/icesjms/fst007 2024-05-19T07:33:48+00:00 Egg mortality of northeast Arctic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus)† Langangen, Øystein Stige, Leif C. Yaragina, Natalia A. Vikebø, Frode B. Bogstad, Bjarte Gusdal, Yvonne 2013 http://dx.doi.org/10.1093/icesjms/fst007 http://academic.oup.com/icesjms/article-pdf/71/5/1129/29145823/fst007.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 71, issue 5, page 1129-1136 ISSN 1095-9289 1054-3139 journal-article 2013 croxfordunivpr https://doi.org/10.1093/icesjms/fst007 2024-05-02T09:31:16Z Abstract High and variable mortality during the egg and larval stages is thought to be an important source of interannual variability in stock size in many marine fish. However, quantitative information about the mortality during these life stages, especially interannual variability, is sparse. Here, we used a time-series covering 35 years (1959–1993) of survey data to estimate mortality during the egg stages of northeast Arctic cod (Gadus morhua) and Northeast Arctic haddock (Melanogrammus aeglefinus). Using a regression approach based on the numbers of eggs in different developmental stages, we calculated the mean instantaneous mortality rate of cod eggs to be 0.17 d−1 (95% CI: 0.15–0.19), which is significantly higher than that for haddock, 0.09 d−1 (95% CI: 0.07–0.12). Interannual variability in egg mortality ranges from ∼0.12 to ∼0.22 d−1 for cod and from ∼0.04 to ∼0.12 d−1 for haddock. The accuracy of these estimates was evaluated by the analysis of synthetic data constructed from a coupled physical–biological model, suggesting that mean mortality and the magnitude of interannual variability were estimated reliably, but not mortality for any given year. Article in Journal/Newspaper Arctic cod Arctic Gadus morhua Northeast Arctic cod Oxford University Press ICES Journal of Marine Science 71 5 1129 1136 |
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Oxford University Press |
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English |
description |
Abstract High and variable mortality during the egg and larval stages is thought to be an important source of interannual variability in stock size in many marine fish. However, quantitative information about the mortality during these life stages, especially interannual variability, is sparse. Here, we used a time-series covering 35 years (1959–1993) of survey data to estimate mortality during the egg stages of northeast Arctic cod (Gadus morhua) and Northeast Arctic haddock (Melanogrammus aeglefinus). Using a regression approach based on the numbers of eggs in different developmental stages, we calculated the mean instantaneous mortality rate of cod eggs to be 0.17 d−1 (95% CI: 0.15–0.19), which is significantly higher than that for haddock, 0.09 d−1 (95% CI: 0.07–0.12). Interannual variability in egg mortality ranges from ∼0.12 to ∼0.22 d−1 for cod and from ∼0.04 to ∼0.12 d−1 for haddock. The accuracy of these estimates was evaluated by the analysis of synthetic data constructed from a coupled physical–biological model, suggesting that mean mortality and the magnitude of interannual variability were estimated reliably, but not mortality for any given year. |
format |
Article in Journal/Newspaper |
author |
Langangen, Øystein Stige, Leif C. Yaragina, Natalia A. Vikebø, Frode B. Bogstad, Bjarte Gusdal, Yvonne |
spellingShingle |
Langangen, Øystein Stige, Leif C. Yaragina, Natalia A. Vikebø, Frode B. Bogstad, Bjarte Gusdal, Yvonne Egg mortality of northeast Arctic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus)† |
author_facet |
Langangen, Øystein Stige, Leif C. Yaragina, Natalia A. Vikebø, Frode B. Bogstad, Bjarte Gusdal, Yvonne |
author_sort |
Langangen, Øystein |
title |
Egg mortality of northeast Arctic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus)† |
title_short |
Egg mortality of northeast Arctic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus)† |
title_full |
Egg mortality of northeast Arctic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus)† |
title_fullStr |
Egg mortality of northeast Arctic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus)† |
title_full_unstemmed |
Egg mortality of northeast Arctic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus)† |
title_sort |
egg mortality of northeast arctic cod (gadus morhua) and haddock (melanogrammus aeglefinus)† |
publisher |
Oxford University Press (OUP) |
publishDate |
2013 |
url |
http://dx.doi.org/10.1093/icesjms/fst007 http://academic.oup.com/icesjms/article-pdf/71/5/1129/29145823/fst007.pdf |
genre |
Arctic cod Arctic Gadus morhua Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Gadus morhua Northeast Arctic cod |
op_source |
ICES Journal of Marine Science volume 71, issue 5, page 1129-1136 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fst007 |
container_title |
ICES Journal of Marine Science |
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71 |
container_issue |
5 |
container_start_page |
1129 |
op_container_end_page |
1136 |
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1799471867954724864 |