Life histories of anadromous salmon males reveal a trade-off between primary and secondary sexual traits
The life-history trade-off between investment in somatic growth and gonadal tissue is caused by individual energy limitations and results in individuals that adopt specific tactics to achieve reproduction. Allocation in primary and secondary sexual traits in Atlantic salmon males was studied by asse...
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Wydział Oceanografii i Geografii Uniwersytetu Gdańskiego
2019
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ftunivgdanskojs:oai:ojsug.pkp.sfu.ca:article/8002 2023-05-15T15:31:13+02:00 Life histories of anadromous salmon males reveal a trade-off between primary and secondary sexual traits Vladić, Tomislav Järvi, Torbjörn Petersson, Erik 2019-09-23 application/pdf https://czasopisma.bg.ug.edu.pl/index.php/oandhs/article/view/8002 eng eng Wydział Oceanografii i Geografii Uniwersytetu Gdańskiego https://czasopisma.bg.ug.edu.pl/index.php/oandhs/article/view/8002/7088 https://czasopisma.bg.ug.edu.pl/index.php/oandhs/article/view/8002 Oceanological and Hydrobiological Studies; Vol. 48 No. 3 (2019); 279-289 Oceanological and Hydrobiological Studies; Tom 48 Nr 3 (2019); 279-289 1897-3191 1730-413X Atlantic salmon age at maturity ejaculate investment resource acquisition resource allocation info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2019 ftunivgdanskojs 2023-03-07T21:07:05Z The life-history trade-off between investment in somatic growth and gonadal tissue is caused by individual energy limitations and results in individuals that adopt specific tactics to achieve reproduction. Allocation in primary and secondary sexual traits in Atlantic salmon males was studied by assessing life history traits (smolt size, sea age, growth rate) based on back-calculation of scales, ejaculate energy content (sperm ATP content, mass and density) and the size of secondary sexual traits. We found that males investing less in secondary sexual traits produce ejaculates with a higher energy content. Differences were found in the investment into primary and secondary sexual traits between fish that spent one year in the sea before returning to their spawning grounds (grilse) and multi-sea-winter adults, suggesting that different energy allocation patterns in reproductive effort reflect alternative developmental pathways. These findings are consistent with the pattern where multi-sea-winter male ejaculate investment relies principally on the resource acquisition in the ocean, whereas grilse ejaculate investment relies chiefly on the resource allocation of available surplus energy, thus representing alternative male reproductive tactics. The life-history trade-off between investment in somatic growth and gonadal tissue is caused by individual energy limitations and results in individuals that adopt specific tactics to achieve reproduction. Allocation in primary and secondary sexual traits in Atlantic salmon males was studied by assessing life history traits (smolt size, sea age, growth rate) based on back-calculation of scales, ejaculate energy content (sperm ATP content, mass and density) and the size of secondary sexual traits. We found that males investing less in secondary sexual traits produce ejaculates with a higher energy content. Differences were found in the investment into primary and secondary sexual traits between fish that spent one year in the sea before returning to their spawning grounds ... Article in Journal/Newspaper Atlantic salmon University Scientific Journals University of Gdansk (UGN) |
institution |
Open Polar |
collection |
University Scientific Journals University of Gdansk (UGN) |
op_collection_id |
ftunivgdanskojs |
language |
English |
topic |
Atlantic salmon age at maturity ejaculate investment resource acquisition resource allocation |
spellingShingle |
Atlantic salmon age at maturity ejaculate investment resource acquisition resource allocation Vladić, Tomislav Järvi, Torbjörn Petersson, Erik Life histories of anadromous salmon males reveal a trade-off between primary and secondary sexual traits |
topic_facet |
Atlantic salmon age at maturity ejaculate investment resource acquisition resource allocation |
description |
The life-history trade-off between investment in somatic growth and gonadal tissue is caused by individual energy limitations and results in individuals that adopt specific tactics to achieve reproduction. Allocation in primary and secondary sexual traits in Atlantic salmon males was studied by assessing life history traits (smolt size, sea age, growth rate) based on back-calculation of scales, ejaculate energy content (sperm ATP content, mass and density) and the size of secondary sexual traits. We found that males investing less in secondary sexual traits produce ejaculates with a higher energy content. Differences were found in the investment into primary and secondary sexual traits between fish that spent one year in the sea before returning to their spawning grounds (grilse) and multi-sea-winter adults, suggesting that different energy allocation patterns in reproductive effort reflect alternative developmental pathways. These findings are consistent with the pattern where multi-sea-winter male ejaculate investment relies principally on the resource acquisition in the ocean, whereas grilse ejaculate investment relies chiefly on the resource allocation of available surplus energy, thus representing alternative male reproductive tactics. The life-history trade-off between investment in somatic growth and gonadal tissue is caused by individual energy limitations and results in individuals that adopt specific tactics to achieve reproduction. Allocation in primary and secondary sexual traits in Atlantic salmon males was studied by assessing life history traits (smolt size, sea age, growth rate) based on back-calculation of scales, ejaculate energy content (sperm ATP content, mass and density) and the size of secondary sexual traits. We found that males investing less in secondary sexual traits produce ejaculates with a higher energy content. Differences were found in the investment into primary and secondary sexual traits between fish that spent one year in the sea before returning to their spawning grounds ... |
format |
Article in Journal/Newspaper |
author |
Vladić, Tomislav Järvi, Torbjörn Petersson, Erik |
author_facet |
Vladić, Tomislav Järvi, Torbjörn Petersson, Erik |
author_sort |
Vladić, Tomislav |
title |
Life histories of anadromous salmon males reveal a trade-off between primary and secondary sexual traits |
title_short |
Life histories of anadromous salmon males reveal a trade-off between primary and secondary sexual traits |
title_full |
Life histories of anadromous salmon males reveal a trade-off between primary and secondary sexual traits |
title_fullStr |
Life histories of anadromous salmon males reveal a trade-off between primary and secondary sexual traits |
title_full_unstemmed |
Life histories of anadromous salmon males reveal a trade-off between primary and secondary sexual traits |
title_sort |
life histories of anadromous salmon males reveal a trade-off between primary and secondary sexual traits |
publisher |
Wydział Oceanografii i Geografii Uniwersytetu Gdańskiego |
publishDate |
2019 |
url |
https://czasopisma.bg.ug.edu.pl/index.php/oandhs/article/view/8002 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Oceanological and Hydrobiological Studies; Vol. 48 No. 3 (2019); 279-289 Oceanological and Hydrobiological Studies; Tom 48 Nr 3 (2019); 279-289 1897-3191 1730-413X |
op_relation |
https://czasopisma.bg.ug.edu.pl/index.php/oandhs/article/view/8002/7088 https://czasopisma.bg.ug.edu.pl/index.php/oandhs/article/view/8002 |
_version_ |
1766361719893917696 |