The use of otolith microstructure to estimate age in adult Atlantic cod Gadus morhua
Transverse sections of otoliths from Atlantic cod Gadus morhua from the Baltic Sea revealed narrow growth increments. The widths of these increments corresponded to daily increments from fish with known otolith growth rates and were therefore assumed to be daily increments. They exhibited a distinct...
Published in: | Journal of Fish Biology |
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2010
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ftdtupubl:oai:pure.atira.dk:publications/2d38568e-2b98-4de8-b142-0569ffc60ba7 2023-12-24T10:14:53+01:00 The use of otolith microstructure to estimate age in adult Atlantic cod Gadus morhua Hüssy, Karin Hinrichsen, H.H. Fey, D.P. Walther, Y. Velasco, A. 2010 https://orbit.dtu.dk/en/publications/2d38568e-2b98-4de8-b142-0569ffc60ba7 https://doi.org/10.1111/j.1095-8649.2010.02602.x http://www3.interscience.wiley.com/journal/123349890/abstract eng eng https://orbit.dtu.dk/en/publications/2d38568e-2b98-4de8-b142-0569ffc60ba7 info:eu-repo/semantics/restrictedAccess Hüssy , K , Hinrichsen , H H , Fey , D P , Walther , Y & Velasco , A 2010 , ' The use of otolith microstructure to estimate age in adult Atlantic cod Gadus morhua ' , Journal of Fish Biology , vol. 76 , no. 7 , pp. 1640-1654 . https://doi.org/10.1111/j.1095-8649.2010.02602.x article 2010 ftdtupubl https://doi.org/10.1111/j.1095-8649.2010.02602.x 2023-11-29T23:57:34Z Transverse sections of otoliths from Atlantic cod Gadus morhua from the Baltic Sea revealed narrow growth increments. The widths of these increments corresponded to daily increments from fish with known otolith growth rates and were therefore assumed to be daily increments. They exhibited a distinct pattern with increasing distance from the primary primordium. A series of zones with clearly distinguishable increments, first with increasing then with decreasing widths in a dome-shaped pattern, were separated by zones where no regular increment structure was visible. Increment width seemed to be tightly coupled to the annual cycle in environmental temperature at a depth of 30–60 m, where G. morhua predominantly reside. Between 135 and 200 increments occurred within the different zones, with a non-significant trend towards lower increment numbers and widths with distance from the primary primordium of the otolith. Increment formation apparently ceased at temperatures <5–6° C, but growth during the cold months corresponded closely with estimated growth rates. The increment patterns seemed to reflect annual cycles in environmental temperature, and the count of the increment cycles may thus be a promising tool for the determination of the true age of Baltic G. morhua. Article in Journal/Newspaper atlantic cod Gadus morhua Technical University of Denmark: DTU Orbit Journal of Fish Biology 76 7 1640 1654 |
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Open Polar |
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Technical University of Denmark: DTU Orbit |
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ftdtupubl |
language |
English |
description |
Transverse sections of otoliths from Atlantic cod Gadus morhua from the Baltic Sea revealed narrow growth increments. The widths of these increments corresponded to daily increments from fish with known otolith growth rates and were therefore assumed to be daily increments. They exhibited a distinct pattern with increasing distance from the primary primordium. A series of zones with clearly distinguishable increments, first with increasing then with decreasing widths in a dome-shaped pattern, were separated by zones where no regular increment structure was visible. Increment width seemed to be tightly coupled to the annual cycle in environmental temperature at a depth of 30–60 m, where G. morhua predominantly reside. Between 135 and 200 increments occurred within the different zones, with a non-significant trend towards lower increment numbers and widths with distance from the primary primordium of the otolith. Increment formation apparently ceased at temperatures <5–6° C, but growth during the cold months corresponded closely with estimated growth rates. The increment patterns seemed to reflect annual cycles in environmental temperature, and the count of the increment cycles may thus be a promising tool for the determination of the true age of Baltic G. morhua. |
format |
Article in Journal/Newspaper |
author |
Hüssy, Karin Hinrichsen, H.H. Fey, D.P. Walther, Y. Velasco, A. |
spellingShingle |
Hüssy, Karin Hinrichsen, H.H. Fey, D.P. Walther, Y. Velasco, A. The use of otolith microstructure to estimate age in adult Atlantic cod Gadus morhua |
author_facet |
Hüssy, Karin Hinrichsen, H.H. Fey, D.P. Walther, Y. Velasco, A. |
author_sort |
Hüssy, Karin |
title |
The use of otolith microstructure to estimate age in adult Atlantic cod Gadus morhua |
title_short |
The use of otolith microstructure to estimate age in adult Atlantic cod Gadus morhua |
title_full |
The use of otolith microstructure to estimate age in adult Atlantic cod Gadus morhua |
title_fullStr |
The use of otolith microstructure to estimate age in adult Atlantic cod Gadus morhua |
title_full_unstemmed |
The use of otolith microstructure to estimate age in adult Atlantic cod Gadus morhua |
title_sort |
use of otolith microstructure to estimate age in adult atlantic cod gadus morhua |
publishDate |
2010 |
url |
https://orbit.dtu.dk/en/publications/2d38568e-2b98-4de8-b142-0569ffc60ba7 https://doi.org/10.1111/j.1095-8649.2010.02602.x http://www3.interscience.wiley.com/journal/123349890/abstract |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Hüssy , K , Hinrichsen , H H , Fey , D P , Walther , Y & Velasco , A 2010 , ' The use of otolith microstructure to estimate age in adult Atlantic cod Gadus morhua ' , Journal of Fish Biology , vol. 76 , no. 7 , pp. 1640-1654 . https://doi.org/10.1111/j.1095-8649.2010.02602.x |
op_relation |
https://orbit.dtu.dk/en/publications/2d38568e-2b98-4de8-b142-0569ffc60ba7 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1095-8649.2010.02602.x |
container_title |
Journal of Fish Biology |
container_volume |
76 |
container_issue |
7 |
container_start_page |
1640 |
op_container_end_page |
1654 |
_version_ |
1786199427274244096 |