Phenology and North Sea cod Gadus morhua L.: has climate change affected otolith annulus formation and growth?
Timing and rate of seasonal zone formation in southern North Sea cod Gadus morhua otoliths was studied. Samples were taken from two time periods, representing low and high temperature regimes. Opaque zones were laid down between January and June, in contrast with the pattern described in other publi...
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Online Access: | https://doi.org/10.1111/j.1095-8649.2007.01331.x http://ecite.utas.edu.au/116256 |
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ftunivtasecite:oai:ecite.utas.edu.au:116256 2023-05-15T16:19:00+02:00 Phenology and North Sea cod Gadus morhua L.: has climate change affected otolith annulus formation and growth? Pilling, GM Millner, RS Easey, MW Maxwell, DL Tidd, AN 2007 https://doi.org/10.1111/j.1095-8649.2007.01331.x http://ecite.utas.edu.au/116256 en eng Blackwell Publishing Ltd http://dx.doi.org/10.1111/j.1095-8649.2007.01331.x Pilling, GM and Millner, RS and Easey, MW and Maxwell, DL and Tidd, AN, Phenology and North Sea cod Gadus morhua L.: has climate change affected otolith annulus formation and growth?, Journal of Fish Biology, 70, (2) pp. 584-599. ISSN 0022-1112 (2007) [Refereed Article] http://ecite.utas.edu.au/116256 Agricultural and Veterinary Sciences Fisheries Sciences Fisheries Management Refereed Article PeerReviewed 2007 ftunivtasecite https://doi.org/10.1111/j.1095-8649.2007.01331.x 2019-12-13T22:15:52Z Timing and rate of seasonal zone formation in southern North Sea cod Gadus morhua otoliths was studied. Samples were taken from two time periods, representing low and high temperature regimes. Opaque zones were laid down between January and June, in contrast with the pattern described in other published studies. Translucent zone formation started earlier in the warmer period, corresponding to peak annual sea surface temperatures, and a period of slow body growth and low metabolic activity. Translucent zone formation, however, continued once temperatures decreased and growth rate increased. It is hypothesized that translucent zone formation is triggered at a threshold of metabolic stress, and that the combined energetic requirements of reproduction, growth and migration may maintain translucent zone formation even if feeding conditions improve. Higher temperatures had a significant negative effect on the rate of translucent zone deposition, but caused a slight increase in opaque zone formation rate. The findings of this study indicate that historical otolith collections could provide key inputs into future phenological studies to improve the understanding of climate change impacts and the dynamics of otolith structure. Article in Journal/Newspaper Gadus morhua eCite UTAS (University of Tasmania) Journal of Fish Biology 70 2 584 599 |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
language |
English |
topic |
Agricultural and Veterinary Sciences Fisheries Sciences Fisheries Management |
spellingShingle |
Agricultural and Veterinary Sciences Fisheries Sciences Fisheries Management Pilling, GM Millner, RS Easey, MW Maxwell, DL Tidd, AN Phenology and North Sea cod Gadus morhua L.: has climate change affected otolith annulus formation and growth? |
topic_facet |
Agricultural and Veterinary Sciences Fisheries Sciences Fisheries Management |
description |
Timing and rate of seasonal zone formation in southern North Sea cod Gadus morhua otoliths was studied. Samples were taken from two time periods, representing low and high temperature regimes. Opaque zones were laid down between January and June, in contrast with the pattern described in other published studies. Translucent zone formation started earlier in the warmer period, corresponding to peak annual sea surface temperatures, and a period of slow body growth and low metabolic activity. Translucent zone formation, however, continued once temperatures decreased and growth rate increased. It is hypothesized that translucent zone formation is triggered at a threshold of metabolic stress, and that the combined energetic requirements of reproduction, growth and migration may maintain translucent zone formation even if feeding conditions improve. Higher temperatures had a significant negative effect on the rate of translucent zone deposition, but caused a slight increase in opaque zone formation rate. The findings of this study indicate that historical otolith collections could provide key inputs into future phenological studies to improve the understanding of climate change impacts and the dynamics of otolith structure. |
format |
Article in Journal/Newspaper |
author |
Pilling, GM Millner, RS Easey, MW Maxwell, DL Tidd, AN |
author_facet |
Pilling, GM Millner, RS Easey, MW Maxwell, DL Tidd, AN |
author_sort |
Pilling, GM |
title |
Phenology and North Sea cod Gadus morhua L.: has climate change affected otolith annulus formation and growth? |
title_short |
Phenology and North Sea cod Gadus morhua L.: has climate change affected otolith annulus formation and growth? |
title_full |
Phenology and North Sea cod Gadus morhua L.: has climate change affected otolith annulus formation and growth? |
title_fullStr |
Phenology and North Sea cod Gadus morhua L.: has climate change affected otolith annulus formation and growth? |
title_full_unstemmed |
Phenology and North Sea cod Gadus morhua L.: has climate change affected otolith annulus formation and growth? |
title_sort |
phenology and north sea cod gadus morhua l.: has climate change affected otolith annulus formation and growth? |
publisher |
Blackwell Publishing Ltd |
publishDate |
2007 |
url |
https://doi.org/10.1111/j.1095-8649.2007.01331.x http://ecite.utas.edu.au/116256 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_relation |
http://dx.doi.org/10.1111/j.1095-8649.2007.01331.x Pilling, GM and Millner, RS and Easey, MW and Maxwell, DL and Tidd, AN, Phenology and North Sea cod Gadus morhua L.: has climate change affected otolith annulus formation and growth?, Journal of Fish Biology, 70, (2) pp. 584-599. ISSN 0022-1112 (2007) [Refereed Article] http://ecite.utas.edu.au/116256 |
op_doi |
https://doi.org/10.1111/j.1095-8649.2007.01331.x |
container_title |
Journal of Fish Biology |
container_volume |
70 |
container_issue |
2 |
container_start_page |
584 |
op_container_end_page |
599 |
_version_ |
1766005295949021184 |