Body Fluid Regulation in Smolting Atlantic Salmon
Parr–smolt metamorphosis in yearling Atlantic salmon was accompanied by variations in plasma and tissue electrolyte levels, and in tissue water distribution. Plasma chloride declined sharply with the onset of smoltification, but recovered to values somewhat higher than those seen in parr with the at...
Published in: | Journal of the Fisheries Research Board of Canada |
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Language: | English |
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Canadian Science Publishing
1963
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Online Access: | http://dx.doi.org/10.1139/f63-093 http://www.nrcresearchpress.com/doi/pdf/10.1139/f63-093 |
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crcansciencepubl:10.1139/f63-093 2023-12-17T10:27:16+01:00 Body Fluid Regulation in Smolting Atlantic Salmon Houston, Arthur H. Threadgold, Lawrence T. 1963 http://dx.doi.org/10.1139/f63-093 http://www.nrcresearchpress.com/doi/pdf/10.1139/f63-093 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 20, issue 6, page 1355-1369 ISSN 0015-296X General Medicine journal-article 1963 crcansciencepubl https://doi.org/10.1139/f63-093 2023-11-19T13:39:28Z Parr–smolt metamorphosis in yearling Atlantic salmon was accompanied by variations in plasma and tissue electrolyte levels, and in tissue water distribution. Plasma chloride declined sharply with the onset of smoltification, but recovered to values somewhat higher than those seen in parr with the attainment of the silvery parr stage. Some decrease, with no evidence of a secondary increase, was observed in tissue chloride concentrations. Changes in chloride space values suggested that parr–smolt metamorphosis is also characterized by a shift of tissue fluids from the extracellular to the cellular phase. These variations in water–electrolyte balance are thought to reflect a premigratory activation and secondary suppression of the extrarenal salt excretion systems employed for osmotic and ionic regulation in sea water. Their occurrence in fish estimated upon the basis of morphological characters to be large parr suggests that the metamorphic process may occur earlier in the life cycle of this species than is generally recognized. Article in Journal/Newspaper Atlantic salmon Canadian Science Publishing (via Crossref) Journal of the Fisheries Research Board of Canada 20 6 1355 1369 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Medicine |
spellingShingle |
General Medicine Houston, Arthur H. Threadgold, Lawrence T. Body Fluid Regulation in Smolting Atlantic Salmon |
topic_facet |
General Medicine |
description |
Parr–smolt metamorphosis in yearling Atlantic salmon was accompanied by variations in plasma and tissue electrolyte levels, and in tissue water distribution. Plasma chloride declined sharply with the onset of smoltification, but recovered to values somewhat higher than those seen in parr with the attainment of the silvery parr stage. Some decrease, with no evidence of a secondary increase, was observed in tissue chloride concentrations. Changes in chloride space values suggested that parr–smolt metamorphosis is also characterized by a shift of tissue fluids from the extracellular to the cellular phase. These variations in water–electrolyte balance are thought to reflect a premigratory activation and secondary suppression of the extrarenal salt excretion systems employed for osmotic and ionic regulation in sea water. Their occurrence in fish estimated upon the basis of morphological characters to be large parr suggests that the metamorphic process may occur earlier in the life cycle of this species than is generally recognized. |
format |
Article in Journal/Newspaper |
author |
Houston, Arthur H. Threadgold, Lawrence T. |
author_facet |
Houston, Arthur H. Threadgold, Lawrence T. |
author_sort |
Houston, Arthur H. |
title |
Body Fluid Regulation in Smolting Atlantic Salmon |
title_short |
Body Fluid Regulation in Smolting Atlantic Salmon |
title_full |
Body Fluid Regulation in Smolting Atlantic Salmon |
title_fullStr |
Body Fluid Regulation in Smolting Atlantic Salmon |
title_full_unstemmed |
Body Fluid Regulation in Smolting Atlantic Salmon |
title_sort |
body fluid regulation in smolting atlantic salmon |
publisher |
Canadian Science Publishing |
publishDate |
1963 |
url |
http://dx.doi.org/10.1139/f63-093 http://www.nrcresearchpress.com/doi/pdf/10.1139/f63-093 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Journal of the Fisheries Research Board of Canada volume 20, issue 6, page 1355-1369 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f63-093 |
container_title |
Journal of the Fisheries Research Board of Canada |
container_volume |
20 |
container_issue |
6 |
container_start_page |
1355 |
op_container_end_page |
1369 |
_version_ |
1785579071959203840 |