Food for thought : slave to the rhythm: seasonal signals in otolith microchemistry reveal age of eastern Baltic cod (Gadus morhua)
Annual growth zones in cod otoliths from the eastern Baltic stock are less discrete than in other cod stocks leading to biased age reading, which recently led to a failure of age-based assessment in the eastern Baltic cod stock. In this study, we explored the applicability of minor and trace element...
Published in: | ICES Journal of Marine Science |
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ftopenagrar:oai:www.openagrar.de:timport_mods_00029935 2024-09-15T17:55:34+00:00 Food for thought : slave to the rhythm: seasonal signals in otolith microchemistry reveal age of eastern Baltic cod (Gadus morhua) Hüssy, Karin Gröger, Joachim Paul Heidemann, Franziska Hinrichsen, Hans-Harald Marohn, Lasse 2016 https://doi.org/10.1093/icesjms/fsv247 https://www.openagrar.de/receive/timport_mods_00029935 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00048513/dn056127.pdf http://icesjms.oxfordjournals.org/content/early/2015/12/18/icesjms.fsv247 eng eng ICES journal of marine science : journal du Conseil -- ICES J Mar Sci -- 1054-3139 -- 29056-7 https://doi.org/10.1093/icesjms/fsv247 https://www.openagrar.de/receive/timport_mods_00029935 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00048513/dn056127.pdf http://icesjms.oxfordjournals.org/content/early/2015/12/18/icesjms.fsv247 all rights reserved only signed in user info:eu-repo/semantics/restrictedAccess article Text ddc:590 age estimation Atlantic cod microchemistry otolith seasonal patterns article Text doc-type:article 2016 ftopenagrar https://doi.org/10.1093/icesjms/fsv247 2024-07-08T23:56:24Z Annual growth zones in cod otoliths from the eastern Baltic stock are less discrete than in other cod stocks leading to biased age reading, which recently led to a failure of age-based assessment in the eastern Baltic cod stock. In this study, we explored the applicability of minor and trace element patterns in cod otoliths for age determination. By first identifying elements of interest in a stock without ageing problems, western Baltic cod, we then tested their applicability on another stock without ageing problems, North Sea cod, and finally applied this knowledge to estimate age of eastern Baltic cod. In western Baltic cod, matching patterns with respect to occurrence of minima and maxima in both otolith opacity and element concentrations were found for Cu, Zn, and Rb, and inverse patterns with Mg and Mn. No match was found for Pb, Ba, and Sr. In the test stock, the North Sea cod, the same patterns in Cu, Zn, Rb, Mg, and Mn signals occurred. All eastern Baltic cod with low visual contrast between growth zones exhibited clearly defined synchronous cycles in Cu, Zn, Rb and Pb. Using a combined finite differencing method and structural break models approach, the statistical significance of the local profile minima were identified, based on which their age could be estimated. Despite extensive environmental differences between the three areas examined, the element concentrations of Cu, Zn, and Rb were strongly correlated in all individuals with similar correlations in all three areas, suggesting that the incorporation mechanisms are the same for these elements and independent of environmental concentrations. Article in Journal/Newspaper atlantic cod Gadus morhua OpenAgrar (OA) ICES Journal of Marine Science 73 4 1019 1032 |
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Open Polar |
collection |
OpenAgrar (OA) |
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ftopenagrar |
language |
English |
topic |
article Text ddc:590 age estimation Atlantic cod microchemistry otolith seasonal patterns |
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article Text ddc:590 age estimation Atlantic cod microchemistry otolith seasonal patterns Hüssy, Karin Gröger, Joachim Paul Heidemann, Franziska Hinrichsen, Hans-Harald Marohn, Lasse Food for thought : slave to the rhythm: seasonal signals in otolith microchemistry reveal age of eastern Baltic cod (Gadus morhua) |
topic_facet |
article Text ddc:590 age estimation Atlantic cod microchemistry otolith seasonal patterns |
description |
Annual growth zones in cod otoliths from the eastern Baltic stock are less discrete than in other cod stocks leading to biased age reading, which recently led to a failure of age-based assessment in the eastern Baltic cod stock. In this study, we explored the applicability of minor and trace element patterns in cod otoliths for age determination. By first identifying elements of interest in a stock without ageing problems, western Baltic cod, we then tested their applicability on another stock without ageing problems, North Sea cod, and finally applied this knowledge to estimate age of eastern Baltic cod. In western Baltic cod, matching patterns with respect to occurrence of minima and maxima in both otolith opacity and element concentrations were found for Cu, Zn, and Rb, and inverse patterns with Mg and Mn. No match was found for Pb, Ba, and Sr. In the test stock, the North Sea cod, the same patterns in Cu, Zn, Rb, Mg, and Mn signals occurred. All eastern Baltic cod with low visual contrast between growth zones exhibited clearly defined synchronous cycles in Cu, Zn, Rb and Pb. Using a combined finite differencing method and structural break models approach, the statistical significance of the local profile minima were identified, based on which their age could be estimated. Despite extensive environmental differences between the three areas examined, the element concentrations of Cu, Zn, and Rb were strongly correlated in all individuals with similar correlations in all three areas, suggesting that the incorporation mechanisms are the same for these elements and independent of environmental concentrations. |
format |
Article in Journal/Newspaper |
author |
Hüssy, Karin Gröger, Joachim Paul Heidemann, Franziska Hinrichsen, Hans-Harald Marohn, Lasse |
author_facet |
Hüssy, Karin Gröger, Joachim Paul Heidemann, Franziska Hinrichsen, Hans-Harald Marohn, Lasse |
author_sort |
Hüssy, Karin |
title |
Food for thought : slave to the rhythm: seasonal signals in otolith microchemistry reveal age of eastern Baltic cod (Gadus morhua) |
title_short |
Food for thought : slave to the rhythm: seasonal signals in otolith microchemistry reveal age of eastern Baltic cod (Gadus morhua) |
title_full |
Food for thought : slave to the rhythm: seasonal signals in otolith microchemistry reveal age of eastern Baltic cod (Gadus morhua) |
title_fullStr |
Food for thought : slave to the rhythm: seasonal signals in otolith microchemistry reveal age of eastern Baltic cod (Gadus morhua) |
title_full_unstemmed |
Food for thought : slave to the rhythm: seasonal signals in otolith microchemistry reveal age of eastern Baltic cod (Gadus morhua) |
title_sort |
food for thought : slave to the rhythm: seasonal signals in otolith microchemistry reveal age of eastern baltic cod (gadus morhua) |
publishDate |
2016 |
url |
https://doi.org/10.1093/icesjms/fsv247 https://www.openagrar.de/receive/timport_mods_00029935 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00048513/dn056127.pdf http://icesjms.oxfordjournals.org/content/early/2015/12/18/icesjms.fsv247 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
ICES journal of marine science : journal du Conseil -- ICES J Mar Sci -- 1054-3139 -- 29056-7 https://doi.org/10.1093/icesjms/fsv247 https://www.openagrar.de/receive/timport_mods_00029935 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00048513/dn056127.pdf http://icesjms.oxfordjournals.org/content/early/2015/12/18/icesjms.fsv247 |
op_rights |
all rights reserved only signed in user info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1093/icesjms/fsv247 |
container_title |
ICES Journal of Marine Science |
container_volume |
73 |
container_issue |
4 |
container_start_page |
1019 |
op_container_end_page |
1032 |
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1810431837980327936 |