Sexual maturation and smoltification in domesticated Atlantic salmon (Salmo salar L.) - is there a developmental conflict?
We present data from two experiments that examined how the developmental processes of smoltification and sexual maturation proceed in parallel in domesticated Atlantic salmon. Onset of maturation and smoltification was stimulated using temperature and photoperiod. Our observations on gonadosomatic i...
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ftimr:oai:imr.brage.unit.no:11250/2569539 2023-05-15T15:29:44+02:00 Sexual maturation and smoltification in domesticated Atlantic salmon (Salmo salar L.) - is there a developmental conflict? Fjelldal, Per Gunnar Schulz, Rüdiger W. Nilsen, Tom Ole Andersson, Eva Norberg, Birgitta Hansen, Tom Johnny 2018 application/pdf http://hdl.handle.net/11250/2569539 https://doi.org/10.14814/phy2.13809 eng eng Norges forskningsråd: 254870 Physiological Reports. 2018, 6 (17), 1-18. urn:issn:2051-817X http://hdl.handle.net/11250/2569539 https://doi.org/10.14814/phy2.13809 cristin:1620606 1-18 6 Physiological Reports 17 Journal article Peer reviewed 2018 ftimr https://doi.org/10.14814/phy2.13809 2021-09-23T20:14:51Z We present data from two experiments that examined how the developmental processes of smoltification and sexual maturation proceed in parallel in domesticated Atlantic salmon. Onset of maturation and smoltification was stimulated using temperature and photoperiod. Our observations on gonadosomatic index (GSI), spermatogenic activity, gill Na+, K+‐ATPase enzyme (NKA) activity, and plasma 11‐ketotestosterone (11‐KT), Na, Cl, and Ca show that smoltification and maturation were both triggered and developed in parallel in male Atlantic salmon, but that the progressing maturation impaired hypoosmoregulation. Female maturation started after completion of smoltification. Furthermore, we present data showing that domesticated salmon can physiologically smoltify–desmoltify–resmoltify within a short period of time, and that development of a secondary sexual characteristic, such as a kype, depends on size in male postsmolts. publishedVersion Article in Journal/Newspaper Atlantic salmon Salmo salar Institute for Marine Research: Brage IMR Physiological Reports 6 17 e13809 |
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Open Polar |
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Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
We present data from two experiments that examined how the developmental processes of smoltification and sexual maturation proceed in parallel in domesticated Atlantic salmon. Onset of maturation and smoltification was stimulated using temperature and photoperiod. Our observations on gonadosomatic index (GSI), spermatogenic activity, gill Na+, K+‐ATPase enzyme (NKA) activity, and plasma 11‐ketotestosterone (11‐KT), Na, Cl, and Ca show that smoltification and maturation were both triggered and developed in parallel in male Atlantic salmon, but that the progressing maturation impaired hypoosmoregulation. Female maturation started after completion of smoltification. Furthermore, we present data showing that domesticated salmon can physiologically smoltify–desmoltify–resmoltify within a short period of time, and that development of a secondary sexual characteristic, such as a kype, depends on size in male postsmolts. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Fjelldal, Per Gunnar Schulz, Rüdiger W. Nilsen, Tom Ole Andersson, Eva Norberg, Birgitta Hansen, Tom Johnny |
spellingShingle |
Fjelldal, Per Gunnar Schulz, Rüdiger W. Nilsen, Tom Ole Andersson, Eva Norberg, Birgitta Hansen, Tom Johnny Sexual maturation and smoltification in domesticated Atlantic salmon (Salmo salar L.) - is there a developmental conflict? |
author_facet |
Fjelldal, Per Gunnar Schulz, Rüdiger W. Nilsen, Tom Ole Andersson, Eva Norberg, Birgitta Hansen, Tom Johnny |
author_sort |
Fjelldal, Per Gunnar |
title |
Sexual maturation and smoltification in domesticated Atlantic salmon (Salmo salar L.) - is there a developmental conflict? |
title_short |
Sexual maturation and smoltification in domesticated Atlantic salmon (Salmo salar L.) - is there a developmental conflict? |
title_full |
Sexual maturation and smoltification in domesticated Atlantic salmon (Salmo salar L.) - is there a developmental conflict? |
title_fullStr |
Sexual maturation and smoltification in domesticated Atlantic salmon (Salmo salar L.) - is there a developmental conflict? |
title_full_unstemmed |
Sexual maturation and smoltification in domesticated Atlantic salmon (Salmo salar L.) - is there a developmental conflict? |
title_sort |
sexual maturation and smoltification in domesticated atlantic salmon (salmo salar l.) - is there a developmental conflict? |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2569539 https://doi.org/10.14814/phy2.13809 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
1-18 6 Physiological Reports 17 |
op_relation |
Norges forskningsråd: 254870 Physiological Reports. 2018, 6 (17), 1-18. urn:issn:2051-817X http://hdl.handle.net/11250/2569539 https://doi.org/10.14814/phy2.13809 cristin:1620606 |
op_doi |
https://doi.org/10.14814/phy2.13809 |
container_title |
Physiological Reports |
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6 |
container_issue |
17 |
container_start_page |
e13809 |
_version_ |
1766360177033871360 |