Plasma thyroxine levels and thyroid gland histology in Baltic salmon ( Salmo salar L.) during smoltification
Plasma thyroxine (T 4 ) levels in Salmo salar L. showed a clearly defined surge which coincided with a rapid rise in the ambient water temperature and with the period of natural seaward migration. It is sugggested that the elevation of T 4 levels has a major role in the completion rather than the on...
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Canadian Science Publishing
1983
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crcansciencepubl:10.1139/z83-256 2023-12-17T10:49:24+01:00 Plasma thyroxine levels and thyroid gland histology in Baltic salmon ( Salmo salar L.) during smoltification Lindahl, K. Lundqvist, H. Rydevik, M. 1983 http://dx.doi.org/10.1139/z83-256 http://www.nrcresearchpress.com/doi/pdf/10.1139/z83-256 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 61, issue 9, page 1954-1958 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1983 crcansciencepubl https://doi.org/10.1139/z83-256 2023-11-19T13:39:33Z Plasma thyroxine (T 4 ) levels in Salmo salar L. showed a clearly defined surge which coincided with a rapid rise in the ambient water temperature and with the period of natural seaward migration. It is sugggested that the elevation of T 4 levels has a major role in the completion rather than the onset of the smoltification in Baltic salmon parr. The body coloration (i.e., smolt or parr appearance) could not be correlated to the levels of plasma T 4 and silvering does not at all times reflect the degree of smoltification. A relationship between size (length and weight) and plasma levels of T 4 was not detected for smolting Baltic salmon parr. Increased circulating levels of T 4 is not reflected by an overall morphological change of the thyroid cells during smoltification. Article in Journal/Newspaper Salmo salar Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 61 9 1954 1958 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Lindahl, K. Lundqvist, H. Rydevik, M. Plasma thyroxine levels and thyroid gland histology in Baltic salmon ( Salmo salar L.) during smoltification |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Plasma thyroxine (T 4 ) levels in Salmo salar L. showed a clearly defined surge which coincided with a rapid rise in the ambient water temperature and with the period of natural seaward migration. It is sugggested that the elevation of T 4 levels has a major role in the completion rather than the onset of the smoltification in Baltic salmon parr. The body coloration (i.e., smolt or parr appearance) could not be correlated to the levels of plasma T 4 and silvering does not at all times reflect the degree of smoltification. A relationship between size (length and weight) and plasma levels of T 4 was not detected for smolting Baltic salmon parr. Increased circulating levels of T 4 is not reflected by an overall morphological change of the thyroid cells during smoltification. |
format |
Article in Journal/Newspaper |
author |
Lindahl, K. Lundqvist, H. Rydevik, M. |
author_facet |
Lindahl, K. Lundqvist, H. Rydevik, M. |
author_sort |
Lindahl, K. |
title |
Plasma thyroxine levels and thyroid gland histology in Baltic salmon ( Salmo salar L.) during smoltification |
title_short |
Plasma thyroxine levels and thyroid gland histology in Baltic salmon ( Salmo salar L.) during smoltification |
title_full |
Plasma thyroxine levels and thyroid gland histology in Baltic salmon ( Salmo salar L.) during smoltification |
title_fullStr |
Plasma thyroxine levels and thyroid gland histology in Baltic salmon ( Salmo salar L.) during smoltification |
title_full_unstemmed |
Plasma thyroxine levels and thyroid gland histology in Baltic salmon ( Salmo salar L.) during smoltification |
title_sort |
plasma thyroxine levels and thyroid gland histology in baltic salmon ( salmo salar l.) during smoltification |
publisher |
Canadian Science Publishing |
publishDate |
1983 |
url |
http://dx.doi.org/10.1139/z83-256 http://www.nrcresearchpress.com/doi/pdf/10.1139/z83-256 |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_source |
Canadian Journal of Zoology volume 61, issue 9, page 1954-1958 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z83-256 |
container_title |
Canadian Journal of Zoology |
container_volume |
61 |
container_issue |
9 |
container_start_page |
1954 |
op_container_end_page |
1958 |
_version_ |
1785573860210376704 |