Ultrasound as a non-invasive tool for monitoring reproductive physiology in female Atlantic salmon (Salmo salar)
Aiming to explore ultrasound technology as a noninvasive method for maturation monitoring, we compared ultrasound observations and measurements in female Atlantic salmon (Salmo salar) during the last year before ovulation with standard, invasive methods such as gonadosomatic index (GSI), gonad histo...
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Online Access: | https://hdl.handle.net/11250/2777440 https://doi.org/10.14814/phy2.13640 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2777440 2023-05-15T15:30:27+02:00 Ultrasound as a non-invasive tool for monitoring reproductive physiology in female Atlantic salmon (Salmo salar) Næve, Ingun Mommens, Maren Arukwe, Augustine Kjørsvik, Elin 2018 application/pdf https://hdl.handle.net/11250/2777440 https://doi.org/10.14814/phy2.13640 eng eng wiley Physiological Reports. 2018, 6:e13640 (9), 1-13. urn:issn:2051-817X https://hdl.handle.net/11250/2777440 https://doi.org/10.14814/phy2.13640 cristin:1654356 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no CC-BY 1-13 6:e13640 Physiological Reports 9 Journal article Peer reviewed 2018 ftntnutrondheimi https://doi.org/10.14814/phy2.13640 2021-09-22T22:35:41Z Aiming to explore ultrasound technology as a noninvasive method for maturation monitoring, we compared ultrasound observations and measurements in female Atlantic salmon (Salmo salar) during the last year before ovulation with standard, invasive methods such as gonadosomatic index (GSI), gonad histology and sex hormone analysis. Ultrasound measurements of ovaries correlated strongly (R > 0.9, P < 0.01) with ovary weight and GSI, and could be used as a noninvasive tool for GSI estimation. Using ultrasound, we were able to identify females with advanced oocyte development and elevated sex hormone and GSI levels earlier than previously observed. Histological studies confirmed these observations showing oocyte yolk accumulation 10 months before ovulation and 8 months before significant increase in sex hormones. Levels of the sex hormone 11-keto testosterone (11-KT) indicated a new role of this hormone at final maturation in salmon females. We propose the use of ultrasound as an alternative method to traditionally used invasive methods during sexual maturation monitoring in wild and farmed Atlantic salmon broodstock populations. Eliminating sacrifice of valuable broodfish, and reducing handling stress, would improve animal welfare in present-day broodstock management. publishedVersion Article in Journal/Newspaper Atlantic salmon Salmo salar NTNU Open Archive (Norwegian University of Science and Technology) Physiological Reports 6 9 e13640 |
institution |
Open Polar |
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NTNU Open Archive (Norwegian University of Science and Technology) |
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ftntnutrondheimi |
language |
English |
description |
Aiming to explore ultrasound technology as a noninvasive method for maturation monitoring, we compared ultrasound observations and measurements in female Atlantic salmon (Salmo salar) during the last year before ovulation with standard, invasive methods such as gonadosomatic index (GSI), gonad histology and sex hormone analysis. Ultrasound measurements of ovaries correlated strongly (R > 0.9, P < 0.01) with ovary weight and GSI, and could be used as a noninvasive tool for GSI estimation. Using ultrasound, we were able to identify females with advanced oocyte development and elevated sex hormone and GSI levels earlier than previously observed. Histological studies confirmed these observations showing oocyte yolk accumulation 10 months before ovulation and 8 months before significant increase in sex hormones. Levels of the sex hormone 11-keto testosterone (11-KT) indicated a new role of this hormone at final maturation in salmon females. We propose the use of ultrasound as an alternative method to traditionally used invasive methods during sexual maturation monitoring in wild and farmed Atlantic salmon broodstock populations. Eliminating sacrifice of valuable broodfish, and reducing handling stress, would improve animal welfare in present-day broodstock management. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Næve, Ingun Mommens, Maren Arukwe, Augustine Kjørsvik, Elin |
spellingShingle |
Næve, Ingun Mommens, Maren Arukwe, Augustine Kjørsvik, Elin Ultrasound as a non-invasive tool for monitoring reproductive physiology in female Atlantic salmon (Salmo salar) |
author_facet |
Næve, Ingun Mommens, Maren Arukwe, Augustine Kjørsvik, Elin |
author_sort |
Næve, Ingun |
title |
Ultrasound as a non-invasive tool for monitoring reproductive physiology in female Atlantic salmon (Salmo salar) |
title_short |
Ultrasound as a non-invasive tool for monitoring reproductive physiology in female Atlantic salmon (Salmo salar) |
title_full |
Ultrasound as a non-invasive tool for monitoring reproductive physiology in female Atlantic salmon (Salmo salar) |
title_fullStr |
Ultrasound as a non-invasive tool for monitoring reproductive physiology in female Atlantic salmon (Salmo salar) |
title_full_unstemmed |
Ultrasound as a non-invasive tool for monitoring reproductive physiology in female Atlantic salmon (Salmo salar) |
title_sort |
ultrasound as a non-invasive tool for monitoring reproductive physiology in female atlantic salmon (salmo salar) |
publisher |
wiley |
publishDate |
2018 |
url |
https://hdl.handle.net/11250/2777440 https://doi.org/10.14814/phy2.13640 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
1-13 6:e13640 Physiological Reports 9 |
op_relation |
Physiological Reports. 2018, 6:e13640 (9), 1-13. urn:issn:2051-817X https://hdl.handle.net/11250/2777440 https://doi.org/10.14814/phy2.13640 cristin:1654356 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.14814/phy2.13640 |
container_title |
Physiological Reports |
container_volume |
6 |
container_issue |
9 |
container_start_page |
e13640 |
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1766360907823185920 |