Total stock size and cannibalism regulate recruitment in cod (Gadus morhua) on the Faroe Plateau
<qd> Steingrund, P., Mouritsen, R., Reinert, J., Gaard, E., and Hátún, H. 2010. Total stock size and cannibalism regulate recruitment in cod ( Gadus morhua ) on the Faroe Plateau. – ICES Journal of Marine Science, 67: 111–124. </qd>Year-class strength of fish is often considered to be de...
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fthighwire:oai:open-archive.highwire.org:icesjms:67/1/111 2023-05-15T16:19:02+02:00 Total stock size and cannibalism regulate recruitment in cod (Gadus morhua) on the Faroe Plateau Steingrund, Petur Mouritsen, Rógvi Reinert, Jákup Gaard, Eilif Hátún, Hjálmar 2010-01-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/67/1/111 https://doi.org/10.1093/icesjms/fsp240 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/67/1/111 http://dx.doi.org/10.1093/icesjms/fsp240 Copyright (C) 2010, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Articles TEXT 2010 fthighwire https://doi.org/10.1093/icesjms/fsp240 2010-01-22T21:28:46Z <qd> Steingrund, P., Mouritsen, R., Reinert, J., Gaard, E., and Hátún, H. 2010. Total stock size and cannibalism regulate recruitment in cod ( Gadus morhua ) on the Faroe Plateau. – ICES Journal of Marine Science, 67: 111–124. </qd>Year-class strength of fish is often considered to be determined at the pelagic larval stage, but we show that year-class strength of cod on the Faroe Plateau seems to be determined later, at the 1- or 2-group stage. Adult cod ( C ), measured in terms of the catch per unit effort (cpue) of small longliners, move into nearshore nursery areas of juvenile cod when in poor condition and probably displace 1-year-old cod to deeper water, where they are cannibalized. In addition, the recruitment of 2-year-old cod, at least up to a certain level, is positively related to the total biomass ( B ) of older cod on the Faroe Plateau, which are present at about the same time as the recruitment event. This feature, which seems to be a new observation in terms of the recruitment dynamics of cod, is possibly related to enhanced foraging or a reduced predation risk. The recruitment of 2-year-old cod during the years 1984–2006 is described by aB / C + d ( r 2 = 0.87), where a and d are fitted constants. The implications for stock assessment and management are discussed. Text Gadus morhua HighWire Press (Stanford University) ICES Journal of Marine Science 67 1 111 124 |
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Articles Steingrund, Petur Mouritsen, Rógvi Reinert, Jákup Gaard, Eilif Hátún, Hjálmar Total stock size and cannibalism regulate recruitment in cod (Gadus morhua) on the Faroe Plateau |
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Articles |
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<qd> Steingrund, P., Mouritsen, R., Reinert, J., Gaard, E., and Hátún, H. 2010. Total stock size and cannibalism regulate recruitment in cod ( Gadus morhua ) on the Faroe Plateau. – ICES Journal of Marine Science, 67: 111–124. </qd>Year-class strength of fish is often considered to be determined at the pelagic larval stage, but we show that year-class strength of cod on the Faroe Plateau seems to be determined later, at the 1- or 2-group stage. Adult cod ( C ), measured in terms of the catch per unit effort (cpue) of small longliners, move into nearshore nursery areas of juvenile cod when in poor condition and probably displace 1-year-old cod to deeper water, where they are cannibalized. In addition, the recruitment of 2-year-old cod, at least up to a certain level, is positively related to the total biomass ( B ) of older cod on the Faroe Plateau, which are present at about the same time as the recruitment event. This feature, which seems to be a new observation in terms of the recruitment dynamics of cod, is possibly related to enhanced foraging or a reduced predation risk. The recruitment of 2-year-old cod during the years 1984–2006 is described by aB / C + d ( r 2 = 0.87), where a and d are fitted constants. The implications for stock assessment and management are discussed. |
format |
Text |
author |
Steingrund, Petur Mouritsen, Rógvi Reinert, Jákup Gaard, Eilif Hátún, Hjálmar |
author_facet |
Steingrund, Petur Mouritsen, Rógvi Reinert, Jákup Gaard, Eilif Hátún, Hjálmar |
author_sort |
Steingrund, Petur |
title |
Total stock size and cannibalism regulate recruitment in cod (Gadus morhua) on the Faroe Plateau |
title_short |
Total stock size and cannibalism regulate recruitment in cod (Gadus morhua) on the Faroe Plateau |
title_full |
Total stock size and cannibalism regulate recruitment in cod (Gadus morhua) on the Faroe Plateau |
title_fullStr |
Total stock size and cannibalism regulate recruitment in cod (Gadus morhua) on the Faroe Plateau |
title_full_unstemmed |
Total stock size and cannibalism regulate recruitment in cod (Gadus morhua) on the Faroe Plateau |
title_sort |
total stock size and cannibalism regulate recruitment in cod (gadus morhua) on the faroe plateau |
publisher |
Oxford University Press |
publishDate |
2010 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/67/1/111 https://doi.org/10.1093/icesjms/fsp240 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/67/1/111 http://dx.doi.org/10.1093/icesjms/fsp240 |
op_rights |
Copyright (C) 2010, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fsp240 |
container_title |
ICES Journal of Marine Science |
container_volume |
67 |
container_issue |
1 |
container_start_page |
111 |
op_container_end_page |
124 |
_version_ |
1766005336586584064 |