Calcium metabolism and osmoregulation during sexual maturation of river running Atlantic salmon
As Atlantic salmon return from the ocean to undertake the anadromous spawning migration up the river of origin, profound changes in calcium metabolism and osmoregulation take place. Using tartrate resistant acid phosphatase as a marker, scale osteoclast activity was found to increase throughout sexu...
Published in: | Journal of Fish Biology |
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Language: | English |
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Online Access: | http://dx.doi.org/10.1111/j.1095-8649.1998.tb00801.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1998.tb00801.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1998.tb00801.x |
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crwiley:10.1111/j.1095-8649.1998.tb00801.x 2024-09-15T17:56:15+00:00 Calcium metabolism and osmoregulation during sexual maturation of river running Atlantic salmon Persson, P. Sundell, K. Björnsson, B. Th. Lundqvist, H. 1998 http://dx.doi.org/10.1111/j.1095-8649.1998.tb00801.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1998.tb00801.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1998.tb00801.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 52, issue 2, page 334-349 ISSN 0022-1112 1095-8649 journal-article 1998 crwiley https://doi.org/10.1111/j.1095-8649.1998.tb00801.x 2024-07-23T04:12:44Z As Atlantic salmon return from the ocean to undertake the anadromous spawning migration up the river of origin, profound changes in calcium metabolism and osmoregulation take place. Using tartrate resistant acid phosphatase as a marker, scale osteoclast activity was found to increase throughout sexual maturation and spawning migration. Thus, the participation of osteoclasts in the elevated scale resorption observed during this phase is established. As calcium was simultaneously accumulated in the female gonads, it is proposed that the scales are resorbed in order to provide calcium for the growing ovaries. Plasma oestradiol‐17 β levels were elevated in females during sexual maturation, and had decreased at the time of spawning. Plasma testosterone levels were similar in males and females during the first part of the upriver migration, but had increased in males and decreased in females at spawning. In addition to the role of these sex steroids in the gonadal growth, their possible involvement in the increased scale resorption during this phase is discussed. Plasma growth hormone and thyroxine levels were elevated in both sexes at spawning, with the triiodothyronine/thyroxine (T 3 /T 4 ) ratio declining sharply, indicating possible roles for these hormones in the maturational process. The relatively low gill Na + , K + ‐ATPase activity of salmon caught in the estuary implies that the fish had already adapted to a hypoosmotic environment. During the upriver migration, the gill Na + , K + ‐ATPase activity decreased further, indicating that the hypoosmoregulatory ability was suppressed further during sexual maturation and spawning migration. Article in Journal/Newspaper Atlantic salmon Wiley Online Library Journal of Fish Biology 52 2 334 349 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
As Atlantic salmon return from the ocean to undertake the anadromous spawning migration up the river of origin, profound changes in calcium metabolism and osmoregulation take place. Using tartrate resistant acid phosphatase as a marker, scale osteoclast activity was found to increase throughout sexual maturation and spawning migration. Thus, the participation of osteoclasts in the elevated scale resorption observed during this phase is established. As calcium was simultaneously accumulated in the female gonads, it is proposed that the scales are resorbed in order to provide calcium for the growing ovaries. Plasma oestradiol‐17 β levels were elevated in females during sexual maturation, and had decreased at the time of spawning. Plasma testosterone levels were similar in males and females during the first part of the upriver migration, but had increased in males and decreased in females at spawning. In addition to the role of these sex steroids in the gonadal growth, their possible involvement in the increased scale resorption during this phase is discussed. Plasma growth hormone and thyroxine levels were elevated in both sexes at spawning, with the triiodothyronine/thyroxine (T 3 /T 4 ) ratio declining sharply, indicating possible roles for these hormones in the maturational process. The relatively low gill Na + , K + ‐ATPase activity of salmon caught in the estuary implies that the fish had already adapted to a hypoosmotic environment. During the upriver migration, the gill Na + , K + ‐ATPase activity decreased further, indicating that the hypoosmoregulatory ability was suppressed further during sexual maturation and spawning migration. |
format |
Article in Journal/Newspaper |
author |
Persson, P. Sundell, K. Björnsson, B. Th. Lundqvist, H. |
spellingShingle |
Persson, P. Sundell, K. Björnsson, B. Th. Lundqvist, H. Calcium metabolism and osmoregulation during sexual maturation of river running Atlantic salmon |
author_facet |
Persson, P. Sundell, K. Björnsson, B. Th. Lundqvist, H. |
author_sort |
Persson, P. |
title |
Calcium metabolism and osmoregulation during sexual maturation of river running Atlantic salmon |
title_short |
Calcium metabolism and osmoregulation during sexual maturation of river running Atlantic salmon |
title_full |
Calcium metabolism and osmoregulation during sexual maturation of river running Atlantic salmon |
title_fullStr |
Calcium metabolism and osmoregulation during sexual maturation of river running Atlantic salmon |
title_full_unstemmed |
Calcium metabolism and osmoregulation during sexual maturation of river running Atlantic salmon |
title_sort |
calcium metabolism and osmoregulation during sexual maturation of river running atlantic salmon |
publisher |
Wiley |
publishDate |
1998 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1998.tb00801.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1998.tb00801.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1998.tb00801.x |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Journal of Fish Biology volume 52, issue 2, page 334-349 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1998.tb00801.x |
container_title |
Journal of Fish Biology |
container_volume |
52 |
container_issue |
2 |
container_start_page |
334 |
op_container_end_page |
349 |
_version_ |
1810432464250732544 |