A review of early life history dynamics of Barents Sea cod (Gadus morhua)
Abstract The Barents Sea stock of Atlantic cod (Gadus morhua) is currently the world's largest cod stock. It is also a stock for which long time-series are available and much research has been carried out. With this review, we wish to present an overview and evaluation of the knowledge on Baren...
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Oxford University Press (OUP)
2014
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsu037 http://academic.oup.com/icesjms/article-pdf/71/8/2064/29147048/fsu037.pdf |
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croxfordunivpr:10.1093/icesjms/fsu037 2024-06-09T07:44:39+00:00 A review of early life history dynamics of Barents Sea cod (Gadus morhua) Ottersen, Geir Bogstad, Bjarte Yaragina, Natalia A. Stige, Leif Christian Vikebø, Frode B. Dalpadado, Padmini 2014 http://dx.doi.org/10.1093/icesjms/fsu037 http://academic.oup.com/icesjms/article-pdf/71/8/2064/29147048/fsu037.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 71, issue 8, page 2064-2087 ISSN 1095-9289 1054-3139 journal-article 2014 croxfordunivpr https://doi.org/10.1093/icesjms/fsu037 2024-05-10T13:15:15Z Abstract The Barents Sea stock of Atlantic cod (Gadus morhua) is currently the world's largest cod stock. It is also a stock for which long time-series are available and much research has been carried out. With this review, we wish to present an overview and evaluation of the knowledge on Barents Sea cod early life dynamics. The focus is on the effects of the biotic and abiotic drivers, which jointly determine the strength of a year class. A stage-by-stage approach is employed. We summarize and assess the significance of the different processes described in the literature to be at play during each specific life stage, from spawning stock, through eggs, larvae, and pelagic juvenile, to demersal juvenile and recruitment at age 3. Also Russian work is included, some of which until now has not been available to non-Russian readers. Physical drivers examined include sea temperature, advection and dispersal, wind-induced turbulence, and light. Biotic mechanisms studied range from maternal effects and skipped spawning in the adult stock through egg quantity and quality, to prey availability for the larvae and effects of cannibalism on the juveniles. Finally, we evaluate the main hypotheses put forth by Johan Hjort a hundred years ago in the light of our synthesis of present knowledge. A main conclusion is that it is unlikely that there is any one single life stage during which recruitment with any generality is determined. Article in Journal/Newspaper atlantic cod Barents Sea Gadus morhua Oxford University Press Barents Sea ICES Journal of Marine Science 71 8 2064 2087 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract The Barents Sea stock of Atlantic cod (Gadus morhua) is currently the world's largest cod stock. It is also a stock for which long time-series are available and much research has been carried out. With this review, we wish to present an overview and evaluation of the knowledge on Barents Sea cod early life dynamics. The focus is on the effects of the biotic and abiotic drivers, which jointly determine the strength of a year class. A stage-by-stage approach is employed. We summarize and assess the significance of the different processes described in the literature to be at play during each specific life stage, from spawning stock, through eggs, larvae, and pelagic juvenile, to demersal juvenile and recruitment at age 3. Also Russian work is included, some of which until now has not been available to non-Russian readers. Physical drivers examined include sea temperature, advection and dispersal, wind-induced turbulence, and light. Biotic mechanisms studied range from maternal effects and skipped spawning in the adult stock through egg quantity and quality, to prey availability for the larvae and effects of cannibalism on the juveniles. Finally, we evaluate the main hypotheses put forth by Johan Hjort a hundred years ago in the light of our synthesis of present knowledge. A main conclusion is that it is unlikely that there is any one single life stage during which recruitment with any generality is determined. |
format |
Article in Journal/Newspaper |
author |
Ottersen, Geir Bogstad, Bjarte Yaragina, Natalia A. Stige, Leif Christian Vikebø, Frode B. Dalpadado, Padmini |
spellingShingle |
Ottersen, Geir Bogstad, Bjarte Yaragina, Natalia A. Stige, Leif Christian Vikebø, Frode B. Dalpadado, Padmini A review of early life history dynamics of Barents Sea cod (Gadus morhua) |
author_facet |
Ottersen, Geir Bogstad, Bjarte Yaragina, Natalia A. Stige, Leif Christian Vikebø, Frode B. Dalpadado, Padmini |
author_sort |
Ottersen, Geir |
title |
A review of early life history dynamics of Barents Sea cod (Gadus morhua) |
title_short |
A review of early life history dynamics of Barents Sea cod (Gadus morhua) |
title_full |
A review of early life history dynamics of Barents Sea cod (Gadus morhua) |
title_fullStr |
A review of early life history dynamics of Barents Sea cod (Gadus morhua) |
title_full_unstemmed |
A review of early life history dynamics of Barents Sea cod (Gadus morhua) |
title_sort |
review of early life history dynamics of barents sea cod (gadus morhua) |
publisher |
Oxford University Press (OUP) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1093/icesjms/fsu037 http://academic.oup.com/icesjms/article-pdf/71/8/2064/29147048/fsu037.pdf |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
atlantic cod Barents Sea Gadus morhua |
genre_facet |
atlantic cod Barents Sea Gadus morhua |
op_source |
ICES Journal of Marine Science volume 71, issue 8, page 2064-2087 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsu037 |
container_title |
ICES Journal of Marine Science |
container_volume |
71 |
container_issue |
8 |
container_start_page |
2064 |
op_container_end_page |
2087 |
_version_ |
1801373459230490624 |