Neuroendocrine regulation of reproduction in Atlantic cod (Gadus morhua): Evidence of Eya3 as an integrator of photoperiodic cues and nutritional regulation to initiate sexual maturation
Evidence from mammals and aves alludes to a possibly conserved seasonal photoperiod induced neuroendocrine cascade which stimulates subsequent sexual maturation however our understanding of this mechanism in teleosts is lacking. Unlike all teleosts studied to date, the Atlantic cod (Gadus morhua) is...
Published in: | Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology |
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Main Authors: | , , , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier
2021
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Subjects: | |
Online Access: | http://hdl.handle.net/1893/33115 https://doi.org/10.1016/j.cbpa.2021.111000 http://dspace.stir.ac.uk/retrieve/709989b4-9854-433c-8930-79996e3a31bc/Graphical%20abstract_1_.tif http://dspace.stir.ac.uk/retrieve/9d9f00e5-023b-4b58-8ff6-8ce20ea33122/Supplemental%20figures%20Doyle%20et%20al%20CBPA_revised1.pdf http://dspace.stir.ac.uk/retrieve/5ef2dd5b-4008-4c6d-8584-ef9a95ba0474/Cod%20eya3%20Doyle%20et%20al%20CBPA_unmnarked1.pdf |
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ftunivstirling:oai:dspace.stir.ac.uk:1893/33115 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
University of Stirling: Stirling Digital Research Repository |
op_collection_id |
ftunivstirling |
language |
English |
topic |
Atlantic cod eya3 dio2 tshβ Reproduction Photoperiod Seasonality |
spellingShingle |
Atlantic cod eya3 dio2 tshβ Reproduction Photoperiod Seasonality Doyle, Alice Cowan, Mairi E Migaud, Herve Wright, Peter J Davie, Andrew Neuroendocrine regulation of reproduction in Atlantic cod (Gadus morhua): Evidence of Eya3 as an integrator of photoperiodic cues and nutritional regulation to initiate sexual maturation |
topic_facet |
Atlantic cod eya3 dio2 tshβ Reproduction Photoperiod Seasonality |
description |
Evidence from mammals and aves alludes to a possibly conserved seasonal photoperiod induced neuroendocrine cascade which stimulates subsequent sexual maturation however our understanding of this mechanism in teleosts is lacking. Unlike all teleosts studied to date, the Atlantic cod (Gadus morhua) is a short day breeder with the reduction in day-length from the summer solstice stimulating gametogenesis. Cod specific orthologues of eya3, tshβ and dio2 were identified and their expression was monitored in the brain and pituitary of cod held under either stimulated or inhibited photoperiod conditions. While no differential expression was apparent in brain dio2 & tshβ and pituitary tshβ, there was significant temporal variation in expression of pituitary eya3 under the SNP treatment, with expression level elevating in association with active gametogenesis. Under the LL treatment, sexual maturation was inhibited and there was a corresponding suppression of eya3 expression. In a second study the impact of size/energetic status on the initiation of sexual maturation was investigated. In the feed restricted population maturation was significantly suppressed (5% sexually mature) compared to the ab libitum fed stock (95% sexually mature) with there being a concomitant significant suppression in pituitary eya3 expression. Overall, these results suggest that pituitary eya3 has the potential to act as an integrator of both environmental and energetic regulation of sexual maturation of cod. Being the first account of eya3 induction in a short day breeding teleost, the conserved association with stimulation of reproduction and not seasonal state indicates that the upstream drivers which initiate the pathway differ among vertebrates according to their breeding strategies, but the pathway itself and its role in the reproductive cascade appears to be conserved across the vertebrate clade. |
author2 |
Marine Alliance for Science & Technology Scotland Institute of Aquaculture Scottish Government - Enterprise, Environment & Digital - Marine Scotland orcid:0000-0002-5404-7512 orcid:0000-0002-9524-618X |
format |
Article in Journal/Newspaper |
author |
Doyle, Alice Cowan, Mairi E Migaud, Herve Wright, Peter J Davie, Andrew |
author_facet |
Doyle, Alice Cowan, Mairi E Migaud, Herve Wright, Peter J Davie, Andrew |
author_sort |
Doyle, Alice |
title |
Neuroendocrine regulation of reproduction in Atlantic cod (Gadus morhua): Evidence of Eya3 as an integrator of photoperiodic cues and nutritional regulation to initiate sexual maturation |
title_short |
Neuroendocrine regulation of reproduction in Atlantic cod (Gadus morhua): Evidence of Eya3 as an integrator of photoperiodic cues and nutritional regulation to initiate sexual maturation |
title_full |
Neuroendocrine regulation of reproduction in Atlantic cod (Gadus morhua): Evidence of Eya3 as an integrator of photoperiodic cues and nutritional regulation to initiate sexual maturation |
title_fullStr |
Neuroendocrine regulation of reproduction in Atlantic cod (Gadus morhua): Evidence of Eya3 as an integrator of photoperiodic cues and nutritional regulation to initiate sexual maturation |
title_full_unstemmed |
Neuroendocrine regulation of reproduction in Atlantic cod (Gadus morhua): Evidence of Eya3 as an integrator of photoperiodic cues and nutritional regulation to initiate sexual maturation |
title_sort |
neuroendocrine regulation of reproduction in atlantic cod (gadus morhua): evidence of eya3 as an integrator of photoperiodic cues and nutritional regulation to initiate sexual maturation |
publisher |
Elsevier |
publishDate |
2021 |
url |
http://hdl.handle.net/1893/33115 https://doi.org/10.1016/j.cbpa.2021.111000 http://dspace.stir.ac.uk/retrieve/709989b4-9854-433c-8930-79996e3a31bc/Graphical%20abstract_1_.tif http://dspace.stir.ac.uk/retrieve/9d9f00e5-023b-4b58-8ff6-8ce20ea33122/Supplemental%20figures%20Doyle%20et%20al%20CBPA_revised1.pdf http://dspace.stir.ac.uk/retrieve/5ef2dd5b-4008-4c6d-8584-ef9a95ba0474/Cod%20eya3%20Doyle%20et%20al%20CBPA_unmnarked1.pdf |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
Doyle A, Cowan ME, Migaud H, Wright PJ & Davie A (2021) Neuroendocrine regulation of reproduction in Atlantic cod (Gadus morhua): Evidence of Eya3 as an integrator of photoperiodic cues and nutritional regulation to initiate sexual maturation. Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology, 260, Art. No.: 111000. https://doi.org/10.1016/j.cbpa.2021.111000 111000 http://hdl.handle.net/1893/33115 doi:10.1016/j.cbpa.2021.111000 34089890 2-s2.0-85108066979 1734696 http://dspace.stir.ac.uk/retrieve/709989b4-9854-433c-8930-79996e3a31bc/Graphical%20abstract_1_.tif http://dspace.stir.ac.uk/retrieve/9d9f00e5-023b-4b58-8ff6-8ce20ea33122/Supplemental%20figures%20Doyle%20et%20al%20CBPA_revised1.pdf http://dspace.stir.ac.uk/retrieve/5ef2dd5b-4008-4c6d-8584-ef9a95ba0474/Cod%20eya3%20Doyle%20et%20al%20CBPA_unmnarked1.pdf |
op_rights |
This item has been embargoed for a period. During the embargo 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. Accepted refereed manuscript of: Doyle A, Cowan ME, Migaud H, Wright PJ & Davie A (2021) Neuroendocrine regulation of reproduction in Atlantic cod (Gadus morhua): Evidence of Eya3 as an integrator of photoperiodic cues and nutritional regulation to initiate sexual maturation. Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology, 260, Art. No.: 111000. https://doi.org/10.1016/j.cbpa.2021.111000 © 2021, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ 2022-06-03 [Cod eya3 Doyle et al CBPA_unmnarked1.pdf] Publisher requires embargo of 12 months after publication. |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.cbpa.2021.111000 |
container_title |
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology |
container_volume |
260 |
container_start_page |
111000 |
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1766357584915202048 |
spelling |
ftunivstirling:oai:dspace.stir.ac.uk:1893/33115 2023-05-15T15:27:07+02:00 Neuroendocrine regulation of reproduction in Atlantic cod (Gadus morhua): Evidence of Eya3 as an integrator of photoperiodic cues and nutritional regulation to initiate sexual maturation Doyle, Alice Cowan, Mairi E Migaud, Herve Wright, Peter J Davie, Andrew Marine Alliance for Science & Technology Scotland Institute of Aquaculture Scottish Government - Enterprise, Environment & Digital - Marine Scotland orcid:0000-0002-5404-7512 orcid:0000-0002-9524-618X 2021-10 image/tiff application/pdf http://hdl.handle.net/1893/33115 https://doi.org/10.1016/j.cbpa.2021.111000 http://dspace.stir.ac.uk/retrieve/709989b4-9854-433c-8930-79996e3a31bc/Graphical%20abstract_1_.tif http://dspace.stir.ac.uk/retrieve/9d9f00e5-023b-4b58-8ff6-8ce20ea33122/Supplemental%20figures%20Doyle%20et%20al%20CBPA_revised1.pdf http://dspace.stir.ac.uk/retrieve/5ef2dd5b-4008-4c6d-8584-ef9a95ba0474/Cod%20eya3%20Doyle%20et%20al%20CBPA_unmnarked1.pdf en eng Elsevier Doyle A, Cowan ME, Migaud H, Wright PJ & Davie A (2021) Neuroendocrine regulation of reproduction in Atlantic cod (Gadus morhua): Evidence of Eya3 as an integrator of photoperiodic cues and nutritional regulation to initiate sexual maturation. Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology, 260, Art. No.: 111000. https://doi.org/10.1016/j.cbpa.2021.111000 111000 http://hdl.handle.net/1893/33115 doi:10.1016/j.cbpa.2021.111000 34089890 2-s2.0-85108066979 1734696 http://dspace.stir.ac.uk/retrieve/709989b4-9854-433c-8930-79996e3a31bc/Graphical%20abstract_1_.tif http://dspace.stir.ac.uk/retrieve/9d9f00e5-023b-4b58-8ff6-8ce20ea33122/Supplemental%20figures%20Doyle%20et%20al%20CBPA_revised1.pdf http://dspace.stir.ac.uk/retrieve/5ef2dd5b-4008-4c6d-8584-ef9a95ba0474/Cod%20eya3%20Doyle%20et%20al%20CBPA_unmnarked1.pdf This item has been embargoed for a period. During the embargo 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. Accepted refereed manuscript of: Doyle A, Cowan ME, Migaud H, Wright PJ & Davie A (2021) Neuroendocrine regulation of reproduction in Atlantic cod (Gadus morhua): Evidence of Eya3 as an integrator of photoperiodic cues and nutritional regulation to initiate sexual maturation. Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology, 260, Art. No.: 111000. https://doi.org/10.1016/j.cbpa.2021.111000 © 2021, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ http://creativecommons.org/licenses/by-nc-nd/4.0/ 2022-06-03 [Cod eya3 Doyle et al CBPA_unmnarked1.pdf] Publisher requires embargo of 12 months after publication. CC-BY-NC-ND Atlantic cod eya3 dio2 tshβ Reproduction Photoperiod Seasonality Journal Article NA - Not Applicable (or Unknown) AM - Accepted Manuscript 2021 ftunivstirling https://doi.org/10.1016/j.cbpa.2021.111000 2022-06-13T18:42:43Z Evidence from mammals and aves alludes to a possibly conserved seasonal photoperiod induced neuroendocrine cascade which stimulates subsequent sexual maturation however our understanding of this mechanism in teleosts is lacking. Unlike all teleosts studied to date, the Atlantic cod (Gadus morhua) is a short day breeder with the reduction in day-length from the summer solstice stimulating gametogenesis. Cod specific orthologues of eya3, tshβ and dio2 were identified and their expression was monitored in the brain and pituitary of cod held under either stimulated or inhibited photoperiod conditions. While no differential expression was apparent in brain dio2 & tshβ and pituitary tshβ, there was significant temporal variation in expression of pituitary eya3 under the SNP treatment, with expression level elevating in association with active gametogenesis. Under the LL treatment, sexual maturation was inhibited and there was a corresponding suppression of eya3 expression. In a second study the impact of size/energetic status on the initiation of sexual maturation was investigated. In the feed restricted population maturation was significantly suppressed (5% sexually mature) compared to the ab libitum fed stock (95% sexually mature) with there being a concomitant significant suppression in pituitary eya3 expression. Overall, these results suggest that pituitary eya3 has the potential to act as an integrator of both environmental and energetic regulation of sexual maturation of cod. Being the first account of eya3 induction in a short day breeding teleost, the conserved association with stimulation of reproduction and not seasonal state indicates that the upstream drivers which initiate the pathway differ among vertebrates according to their breeding strategies, but the pathway itself and its role in the reproductive cascade appears to be conserved across the vertebrate clade. Article in Journal/Newspaper atlantic cod Gadus morhua University of Stirling: Stirling Digital Research Repository Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology 260 111000 |