Egg mortality of northeast Arctic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus)
<qd> Langangen, Ø., Stige, L. C., Yaragina, N. A., Vikebø, F. B., Bogstad, B., and Gusdal, Y. Egg mortality of northeast Arctic cod ( Gadus morhua ) and haddock ( Melanogrammus aeglefinus ). – ICES Journal of Marine Science, doi:10.1093/icesjms/fst007. </qd>High and variable mortality du...
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fthighwire:oai:open-archive.highwire.org:icesjms:fst007v1 2023-05-15T14:30:22+02:00 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 2013-03-20 05:13:25.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/fst007v1 https://doi.org/10.1093/icesjms/fst007 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/fst007v1 http://dx.doi.org/10.1093/icesjms/fst007 Copyright (C) 2013, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Larval Fish Conference: Assessing the relative contribution of different sources of mortality TEXT 2013 fthighwire https://doi.org/10.1093/icesjms/fst007 2013-05-26T22:47:57Z <qd> Langangen, Ø., Stige, L. C., Yaragina, N. A., Vikebø, F. B., Bogstad, B., and Gusdal, Y. Egg mortality of northeast Arctic cod ( Gadus morhua ) and haddock ( Melanogrammus aeglefinus ). – ICES Journal of Marine Science, doi:10.1093/icesjms/fst007. </qd>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. Text Arctic cod Arctic Gadus morhua Northeast Arctic cod HighWire Press (Stanford University) Arctic Stige ENVELOPE(6.665,6.665,62.535,62.535) ICES Journal of Marine Science 71 5 1129 1136 |
institution |
Open Polar |
collection |
HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
Larval Fish Conference: Assessing the relative contribution of different sources of mortality |
spellingShingle |
Larval Fish Conference: Assessing the relative contribution of different sources of mortality 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) |
topic_facet |
Larval Fish Conference: Assessing the relative contribution of different sources of mortality |
description |
<qd> Langangen, Ø., Stige, L. C., Yaragina, N. A., Vikebø, F. B., Bogstad, B., and Gusdal, Y. Egg mortality of northeast Arctic cod ( Gadus morhua ) and haddock ( Melanogrammus aeglefinus ). – ICES Journal of Marine Science, doi:10.1093/icesjms/fst007. </qd>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 |
Text |
author |
Langangen, Øystein Stige, Leif C. Yaragina, Natalia A. Vikebø, Frode B. Bogstad, Bjarte Gusdal, Yvonne |
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 |
publishDate |
2013 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/fst007v1 https://doi.org/10.1093/icesjms/fst007 |
long_lat |
ENVELOPE(6.665,6.665,62.535,62.535) |
geographic |
Arctic Stige |
geographic_facet |
Arctic Stige |
genre |
Arctic cod Arctic Gadus morhua Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Gadus morhua Northeast Arctic cod |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/fst007v1 http://dx.doi.org/10.1093/icesjms/fst007 |
op_rights |
Copyright (C) 2013, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fst007 |
container_title |
ICES Journal of Marine Science |
container_volume |
71 |
container_issue |
5 |
container_start_page |
1129 |
op_container_end_page |
1136 |
_version_ |
1766304223531630592 |