Review of western Baltic cod (Gadus morhua) recruitment dynamics
<qd> Hüssy, K. 2011. Review of western Baltic cod ( Gadus morhua ) recruitment dynamics. – ICES Journal of Marine Science, 68: 1459–1471. </qd>Important processes in the recruitment dynamics of western Baltic cod ( Gadus morhua ) are identified. Spawning areas are in the deep, saline wat...
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fthighwire:oai:open-archive.highwire.org:icesjms:68/7/1459 2023-05-15T16:18:58+02:00 Review of western Baltic cod (Gadus morhua) recruitment dynamics Hüssy, Karin 2011-07-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/68/7/1459 https://doi.org/10.1093/icesjms/fsr088 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/68/7/1459 http://dx.doi.org/10.1093/icesjms/fsr088 Copyright (C) 2011, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Articles TEXT 2011 fthighwire https://doi.org/10.1093/icesjms/fsr088 2011-07-01T20:56:05Z <qd> Hüssy, K. 2011. Review of western Baltic cod ( Gadus morhua ) recruitment dynamics. – ICES Journal of Marine Science, 68: 1459–1471. </qd>Important processes in the recruitment dynamics of western Baltic cod ( Gadus morhua ) are identified. Spawning areas are in the deep, saline waters below 20–40 m, depending on area topography. Spatial distribution remains relatively stable over time. Peak spawning shows an area-specific pattern, with progressively later spawning towards the east. Genetic stock structure and tagging indicate some degree of natal homing for spawning. The highly variable hydrodynamic conditions and the fact that cod eggs float in the water column cause their entrainment by currents, and their destination is determined by the prevailing winds and currents. Drift is almost exclusively to the east, but the magnitude and its impact on the structure of the affected stocks (Kattegat, western Baltic, and eastern Baltic) remains unresolved. Salinity limits the east–west exchange of eggs as a consequence of the stocks' differential requirement for neutral buoyancy. Superimposed on this, oxygen content and temperature have a significant effect on fertilization, egg/larva development, and survival. Within the Baltic Sea ecosystem, mixing of stocks may be anticipated and is particularly pronounced in the Arkona Basin because of its use for spawning by both western and eastern stocks, the advection of early life stages from the west and immigration/emigration from the east. Text Gadus morhua HighWire Press (Stanford University) Kattegat ENVELOPE(9.692,9.692,63.563,63.563) ICES Journal of Marine Science 68 7 1459 1471 |
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HighWire Press (Stanford University) |
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fthighwire |
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English |
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Articles Hüssy, Karin Review of western Baltic cod (Gadus morhua) recruitment dynamics |
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<qd> Hüssy, K. 2011. Review of western Baltic cod ( Gadus morhua ) recruitment dynamics. – ICES Journal of Marine Science, 68: 1459–1471. </qd>Important processes in the recruitment dynamics of western Baltic cod ( Gadus morhua ) are identified. Spawning areas are in the deep, saline waters below 20–40 m, depending on area topography. Spatial distribution remains relatively stable over time. Peak spawning shows an area-specific pattern, with progressively later spawning towards the east. Genetic stock structure and tagging indicate some degree of natal homing for spawning. The highly variable hydrodynamic conditions and the fact that cod eggs float in the water column cause their entrainment by currents, and their destination is determined by the prevailing winds and currents. Drift is almost exclusively to the east, but the magnitude and its impact on the structure of the affected stocks (Kattegat, western Baltic, and eastern Baltic) remains unresolved. Salinity limits the east–west exchange of eggs as a consequence of the stocks' differential requirement for neutral buoyancy. Superimposed on this, oxygen content and temperature have a significant effect on fertilization, egg/larva development, and survival. Within the Baltic Sea ecosystem, mixing of stocks may be anticipated and is particularly pronounced in the Arkona Basin because of its use for spawning by both western and eastern stocks, the advection of early life stages from the west and immigration/emigration from the east. |
format |
Text |
author |
Hüssy, Karin |
author_facet |
Hüssy, Karin |
author_sort |
Hüssy, Karin |
title |
Review of western Baltic cod (Gadus morhua) recruitment dynamics |
title_short |
Review of western Baltic cod (Gadus morhua) recruitment dynamics |
title_full |
Review of western Baltic cod (Gadus morhua) recruitment dynamics |
title_fullStr |
Review of western Baltic cod (Gadus morhua) recruitment dynamics |
title_full_unstemmed |
Review of western Baltic cod (Gadus morhua) recruitment dynamics |
title_sort |
review of western baltic cod (gadus morhua) recruitment dynamics |
publisher |
Oxford University Press |
publishDate |
2011 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/68/7/1459 https://doi.org/10.1093/icesjms/fsr088 |
long_lat |
ENVELOPE(9.692,9.692,63.563,63.563) |
geographic |
Kattegat |
geographic_facet |
Kattegat |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/68/7/1459 http://dx.doi.org/10.1093/icesjms/fsr088 |
op_rights |
Copyright (C) 2011, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fsr088 |
container_title |
ICES Journal of Marine Science |
container_volume |
68 |
container_issue |
7 |
container_start_page |
1459 |
op_container_end_page |
1471 |
_version_ |
1766005249899757568 |