The role of seasonally altering photoperiod in regulating physiology in Atlantic cod (Gadus morhua). Part I. Sexual maturation
While the Atlantic cod (Gadus morhata) displays clear seasonality in its reproductive cycle, the exact photic signal that entrains this rhythm is yet undefined. This present work developed a model to describe the photic regulation of reproduction in the species in comparison with other commercially...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | http://hdl.handle.net/1893/20071 https://doi.org/10.1139/f06-169 http://dspace.stir.ac.uk/bitstream/1893/20071/1/Davie%20et%20al%20CJFAS%2064%2084-97%202007.pdf |
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ftunivstirling:oai:dspace.stir.ac.uk:1893/20071 2024-06-02T08:03:08+00:00 The role of seasonally altering photoperiod in regulating physiology in Atlantic cod (Gadus morhua). Part I. Sexual maturation Davie, Andrew Porter, Mark J R Bromage, Niall R Migaud, Herve Institute of Aquaculture University of Stirling orcid:0000-0002-9524-618X orcid:0000-0002-5404-7512 2007-01 application/pdf http://hdl.handle.net/1893/20071 https://doi.org/10.1139/f06-169 http://dspace.stir.ac.uk/bitstream/1893/20071/1/Davie%20et%20al%20CJFAS%2064%2084-97%202007.pdf en eng NRC Research Press Davie A, Porter MJR, Bromage NR & Migaud H (2007) The role of seasonally altering photoperiod in regulating physiology in Atlantic cod (Gadus morhua). Part I. Sexual maturation. Canadian Journal of Fisheries and Aquatic Sciences, 64 (1), pp. 84-97. https://doi.org/10.1139/f06-169 http://hdl.handle.net/1893/20071 doi:10.1139/f06-169 WOS:000244892500008 2-s2.0-34247228676 796324 http://dspace.stir.ac.uk/bitstream/1893/20071/1/Davie%20et%20al%20CJFAS%2064%2084-97%202007.pdf The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. http://www.rioxx.net/licenses/under-embargo-all-rights-reserved 3000-01-01 [Davie et al CJFAS 64 84-97 2007.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work. Journal Article VoR - Version of Record 2007 ftunivstirling https://doi.org/10.1139/f06-169 2024-05-07T04:30:11Z While the Atlantic cod (Gadus morhata) displays clear seasonality in its reproductive cycle, the exact photic signal that entrains this rhythm is yet undefined. This present work developed a model to describe the photic regulation of reproduction in the species in comparison with other commercially important temperate teleosts. This was achieved through the strategic masking of the natural photoperiod cycle during the first 2 years of life with the application of continuous illumination. The results demonstrated that it is the falling autumnal photoperiod signal after the summer solstice, more specifically after October, that is responsible for recruiting individuals to enter the sexual maturation cycle. Furthermore, in all treatments where this signal was masked through the application of continuous illumination, there was no significant reproductive activity and growth was improved by up to 60% at 27 months posthatch. This information is of particular value to the developing cod aquaculture industry in which the management of reproduction using artificial photoperiod manipulation will be of vital economic importance Article in Journal/Newspaper atlantic cod Gadus morhua University of Stirling: Stirling Digital Research Repository Canadian Journal of Fisheries and Aquatic Sciences 64 1 84 97 |
institution |
Open Polar |
collection |
University of Stirling: Stirling Digital Research Repository |
op_collection_id |
ftunivstirling |
language |
English |
description |
While the Atlantic cod (Gadus morhata) displays clear seasonality in its reproductive cycle, the exact photic signal that entrains this rhythm is yet undefined. This present work developed a model to describe the photic regulation of reproduction in the species in comparison with other commercially important temperate teleosts. This was achieved through the strategic masking of the natural photoperiod cycle during the first 2 years of life with the application of continuous illumination. The results demonstrated that it is the falling autumnal photoperiod signal after the summer solstice, more specifically after October, that is responsible for recruiting individuals to enter the sexual maturation cycle. Furthermore, in all treatments where this signal was masked through the application of continuous illumination, there was no significant reproductive activity and growth was improved by up to 60% at 27 months posthatch. This information is of particular value to the developing cod aquaculture industry in which the management of reproduction using artificial photoperiod manipulation will be of vital economic importance |
author2 |
Institute of Aquaculture University of Stirling orcid:0000-0002-9524-618X orcid:0000-0002-5404-7512 |
format |
Article in Journal/Newspaper |
author |
Davie, Andrew Porter, Mark J R Bromage, Niall R Migaud, Herve |
spellingShingle |
Davie, Andrew Porter, Mark J R Bromage, Niall R Migaud, Herve The role of seasonally altering photoperiod in regulating physiology in Atlantic cod (Gadus morhua). Part I. Sexual maturation |
author_facet |
Davie, Andrew Porter, Mark J R Bromage, Niall R Migaud, Herve |
author_sort |
Davie, Andrew |
title |
The role of seasonally altering photoperiod in regulating physiology in Atlantic cod (Gadus morhua). Part I. Sexual maturation |
title_short |
The role of seasonally altering photoperiod in regulating physiology in Atlantic cod (Gadus morhua). Part I. Sexual maturation |
title_full |
The role of seasonally altering photoperiod in regulating physiology in Atlantic cod (Gadus morhua). Part I. Sexual maturation |
title_fullStr |
The role of seasonally altering photoperiod in regulating physiology in Atlantic cod (Gadus morhua). Part I. Sexual maturation |
title_full_unstemmed |
The role of seasonally altering photoperiod in regulating physiology in Atlantic cod (Gadus morhua). Part I. Sexual maturation |
title_sort |
role of seasonally altering photoperiod in regulating physiology in atlantic cod (gadus morhua). part i. sexual maturation |
publisher |
NRC Research Press |
publishDate |
2007 |
url |
http://hdl.handle.net/1893/20071 https://doi.org/10.1139/f06-169 http://dspace.stir.ac.uk/bitstream/1893/20071/1/Davie%20et%20al%20CJFAS%2064%2084-97%202007.pdf |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
Davie A, Porter MJR, Bromage NR & Migaud H (2007) The role of seasonally altering photoperiod in regulating physiology in Atlantic cod (Gadus morhua). Part I. Sexual maturation. Canadian Journal of Fisheries and Aquatic Sciences, 64 (1), pp. 84-97. https://doi.org/10.1139/f06-169 http://hdl.handle.net/1893/20071 doi:10.1139/f06-169 WOS:000244892500008 2-s2.0-34247228676 796324 http://dspace.stir.ac.uk/bitstream/1893/20071/1/Davie%20et%20al%20CJFAS%2064%2084-97%202007.pdf |
op_rights |
The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. http://www.rioxx.net/licenses/under-embargo-all-rights-reserved 3000-01-01 [Davie et al CJFAS 64 84-97 2007.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work. |
op_doi |
https://doi.org/10.1139/f06-169 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
64 |
container_issue |
1 |
container_start_page |
84 |
op_container_end_page |
97 |
_version_ |
1800747609335267328 |