Review of western Baltic cod (Gadus morhua) recruitment dynamics
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...
Published in: | ICES Journal of Marine Science |
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Language: | English |
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2011
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Online Access: | https://orbit.dtu.dk/en/publications/b70958a2-86ee-41f6-acd5-677aac36b4aa https://doi.org/10.1093/icesjms/fsr088 |
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ftdtupubl:oai:pure.atira.dk:publications/b70958a2-86ee-41f6-acd5-677aac36b4aa 2024-06-23T07:52:55+00:00 Review of western Baltic cod (Gadus morhua) recruitment dynamics Hüssy, Karin 2011 https://orbit.dtu.dk/en/publications/b70958a2-86ee-41f6-acd5-677aac36b4aa https://doi.org/10.1093/icesjms/fsr088 eng eng https://orbit.dtu.dk/en/publications/b70958a2-86ee-41f6-acd5-677aac36b4aa info:eu-repo/semantics/closedAccess Hüssy , K 2011 , ' Review of western Baltic cod (Gadus morhua) recruitment dynamics ' , ICES Journal of Marine Science , vol. 68 , no. 7 , pp. 1459-1471 . https://doi.org/10.1093/icesjms/fsr088 /dk/atira/pure/sustainabledevelopmentgoals/reduced_inequalities name=SDG 10 - Reduced Inequalities article 2011 ftdtupubl https://doi.org/10.1093/icesjms/fsr088 2024-06-11T14:29:46Z 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. Article in Journal/Newspaper Gadus morhua Technical University of Denmark: DTU Orbit Kattegat ENVELOPE(9.692,9.692,63.563,63.563) ICES Journal of Marine Science 68 7 1459 1471 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
/dk/atira/pure/sustainabledevelopmentgoals/reduced_inequalities name=SDG 10 - Reduced Inequalities |
spellingShingle |
/dk/atira/pure/sustainabledevelopmentgoals/reduced_inequalities name=SDG 10 - Reduced Inequalities Hüssy, Karin Review of western Baltic cod (Gadus morhua) recruitment dynamics |
topic_facet |
/dk/atira/pure/sustainabledevelopmentgoals/reduced_inequalities name=SDG 10 - Reduced Inequalities |
description |
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 |
Article in Journal/Newspaper |
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 |
publishDate |
2011 |
url |
https://orbit.dtu.dk/en/publications/b70958a2-86ee-41f6-acd5-677aac36b4aa 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_source |
Hüssy , K 2011 , ' Review of western Baltic cod (Gadus morhua) recruitment dynamics ' , ICES Journal of Marine Science , vol. 68 , no. 7 , pp. 1459-1471 . https://doi.org/10.1093/icesjms/fsr088 |
op_relation |
https://orbit.dtu.dk/en/publications/b70958a2-86ee-41f6-acd5-677aac36b4aa |
op_rights |
info:eu-repo/semantics/closedAccess |
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_ |
1802644374723493888 |