Combination of genetics and spatial modelling highlights the sensitivity of cod (Gadus morhua) population diversity in the North Sea to distributions of fishing
Conserving genetic diversity in animal populations is important for sustaining their ability to respond to environmental change. However, the “between-population” component of genetic diversity (biocomplexity) is threatened in many exploited populations, particularly marine fish, where harvest manag...
Published in: | ICES Journal of Marine Science |
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Format: | Article in Journal/Newspaper |
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Online Access: | https://orbit.dtu.dk/en/publications/a9b9fe35-c3ed-4489-b475-f67393f0fd8c https://doi.org/10.1093/icesjms/fst185 |
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ftdtupubl:oai:pure.atira.dk:publications/a9b9fe35-c3ed-4489-b475-f67393f0fd8c 2024-09-15T17:55:32+00:00 Combination of genetics and spatial modelling highlights the sensitivity of cod (Gadus morhua) population diversity in the North Sea to distributions of fishing Heath, Michael R. Culling, Mark A. Crozier, Walter W. Fox, Clive J. Gurney, William S. C. Hutchinson, William F. Eg Nielsen, Einar O'Sullivan, Martha Preedy, Katharine F. Righton, David A. Speirs, Douglas C. Taylor, Martin I. Wright, Peter J. Carvalho, Gary R. 2014 https://orbit.dtu.dk/en/publications/a9b9fe35-c3ed-4489-b475-f67393f0fd8c https://doi.org/10.1093/icesjms/fst185 eng eng https://orbit.dtu.dk/en/publications/a9b9fe35-c3ed-4489-b475-f67393f0fd8c info:eu-repo/semantics/closedAccess Heath , M R , Culling , M A , Crozier , W W , Fox , C J , Gurney , W S C , Hutchinson , W F , Eg Nielsen , E , O'Sullivan , M , Preedy , K F , Righton , D A , Speirs , D C , Taylor , M I , Wright , P J & Carvalho , G R 2014 , ' Combination of genetics and spatial modelling highlights the sensitivity of cod (Gadus morhua) population diversity in the North Sea to distributions of fishing ' , ICES Journal of Marine Science , vol. 71 , no. 4 , pp. 794-807 . https://doi.org/10.1093/icesjms/fst185 Regular Articles Original Articles /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2014 ftdtupubl https://doi.org/10.1093/icesjms/fst185 2024-07-08T23:51:45Z Conserving genetic diversity in animal populations is important for sustaining their ability to respond to environmental change. However, the “between-population” component of genetic diversity (biocomplexity) is threatened in many exploited populations, particularly marine fish, where harvest management regions may be larger than the spatial extent of genetically distinct subpopulations. Using single-nucleotide polymorphism data, we delineated the geographic limits of three population units of Atlantic cod (Gadus morhua) in northwest European waters. Two of the populations cohabit the North Sea, and trawl survey data showed differing trends in their abundances. We developed a spatial model of these units to simulate population dynamics under spatial patterns of harvesting. Competition between units during the pelagic juvenile stages in the model led to suppression of the more localized northern North Sea (Viking) unit by the more widespread (Dogger) unit, and its premature extinction under some spatial patterns of fishing. Fishery catch limits for cod are set at the scale of the whole North Sea without regard to such subpopulation dynamics. Our model offers a method to quantify adjustments to regional fishing mortality rates to strike a balance between maximizing sustainable yield and conserving vulnerable populations. Article in Journal/Newspaper atlantic cod Gadus morhua Technical University of Denmark: DTU Orbit ICES Journal of Marine Science 71 4 794 807 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Regular Articles Original Articles /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Regular Articles Original Articles /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Heath, Michael R. Culling, Mark A. Crozier, Walter W. Fox, Clive J. Gurney, William S. C. Hutchinson, William F. Eg Nielsen, Einar O'Sullivan, Martha Preedy, Katharine F. Righton, David A. Speirs, Douglas C. Taylor, Martin I. Wright, Peter J. Carvalho, Gary R. Combination of genetics and spatial modelling highlights the sensitivity of cod (Gadus morhua) population diversity in the North Sea to distributions of fishing |
topic_facet |
Regular Articles Original Articles /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
Conserving genetic diversity in animal populations is important for sustaining their ability to respond to environmental change. However, the “between-population” component of genetic diversity (biocomplexity) is threatened in many exploited populations, particularly marine fish, where harvest management regions may be larger than the spatial extent of genetically distinct subpopulations. Using single-nucleotide polymorphism data, we delineated the geographic limits of three population units of Atlantic cod (Gadus morhua) in northwest European waters. Two of the populations cohabit the North Sea, and trawl survey data showed differing trends in their abundances. We developed a spatial model of these units to simulate population dynamics under spatial patterns of harvesting. Competition between units during the pelagic juvenile stages in the model led to suppression of the more localized northern North Sea (Viking) unit by the more widespread (Dogger) unit, and its premature extinction under some spatial patterns of fishing. Fishery catch limits for cod are set at the scale of the whole North Sea without regard to such subpopulation dynamics. Our model offers a method to quantify adjustments to regional fishing mortality rates to strike a balance between maximizing sustainable yield and conserving vulnerable populations. |
format |
Article in Journal/Newspaper |
author |
Heath, Michael R. Culling, Mark A. Crozier, Walter W. Fox, Clive J. Gurney, William S. C. Hutchinson, William F. Eg Nielsen, Einar O'Sullivan, Martha Preedy, Katharine F. Righton, David A. Speirs, Douglas C. Taylor, Martin I. Wright, Peter J. Carvalho, Gary R. |
author_facet |
Heath, Michael R. Culling, Mark A. Crozier, Walter W. Fox, Clive J. Gurney, William S. C. Hutchinson, William F. Eg Nielsen, Einar O'Sullivan, Martha Preedy, Katharine F. Righton, David A. Speirs, Douglas C. Taylor, Martin I. Wright, Peter J. Carvalho, Gary R. |
author_sort |
Heath, Michael R. |
title |
Combination of genetics and spatial modelling highlights the sensitivity of cod (Gadus morhua) population diversity in the North Sea to distributions of fishing |
title_short |
Combination of genetics and spatial modelling highlights the sensitivity of cod (Gadus morhua) population diversity in the North Sea to distributions of fishing |
title_full |
Combination of genetics and spatial modelling highlights the sensitivity of cod (Gadus morhua) population diversity in the North Sea to distributions of fishing |
title_fullStr |
Combination of genetics and spatial modelling highlights the sensitivity of cod (Gadus morhua) population diversity in the North Sea to distributions of fishing |
title_full_unstemmed |
Combination of genetics and spatial modelling highlights the sensitivity of cod (Gadus morhua) population diversity in the North Sea to distributions of fishing |
title_sort |
combination of genetics and spatial modelling highlights the sensitivity of cod (gadus morhua) population diversity in the north sea to distributions of fishing |
publishDate |
2014 |
url |
https://orbit.dtu.dk/en/publications/a9b9fe35-c3ed-4489-b475-f67393f0fd8c https://doi.org/10.1093/icesjms/fst185 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Heath , M R , Culling , M A , Crozier , W W , Fox , C J , Gurney , W S C , Hutchinson , W F , Eg Nielsen , E , O'Sullivan , M , Preedy , K F , Righton , D A , Speirs , D C , Taylor , M I , Wright , P J & Carvalho , G R 2014 , ' Combination of genetics and spatial modelling highlights the sensitivity of cod (Gadus morhua) population diversity in the North Sea to distributions of fishing ' , ICES Journal of Marine Science , vol. 71 , no. 4 , pp. 794-807 . https://doi.org/10.1093/icesjms/fst185 |
op_relation |
https://orbit.dtu.dk/en/publications/a9b9fe35-c3ed-4489-b475-f67393f0fd8c |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1093/icesjms/fst185 |
container_title |
ICES Journal of Marine Science |
container_volume |
71 |
container_issue |
4 |
container_start_page |
794 |
op_container_end_page |
807 |
_version_ |
1810431809078427648 |