Purines in the Integument of the Atlantic Salmon ( Salmo salar) During Parr–Smolt Transformation
During the parr–smolt transformation in Atlantic salmon, silvery materials were found beneath the scales (scale layer) and deep in the dermis adjacent to the muscle (skin layer). Both layers were thicker in smolts than in parr and both layers contained guanine and lesser amounts of hypoxanthine.Chan...
Published in: | Journal of the Fisheries Research Board of Canada |
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Canadian Science Publishing
1967
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Online Access: | http://dx.doi.org/10.1139/f67-085 http://www.nrcresearchpress.com/doi/pdf/10.1139/f67-085 |
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crcansciencepubl:10.1139/f67-085 2024-09-15T17:56:15+00:00 Purines in the Integument of the Atlantic Salmon ( Salmo salar) During Parr–Smolt Transformation Johnston, C. E. Eales, J. G. 1967 http://dx.doi.org/10.1139/f67-085 http://www.nrcresearchpress.com/doi/pdf/10.1139/f67-085 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 24, issue 5, page 955-964 ISSN 0015-296X journal-article 1967 crcansciencepubl https://doi.org/10.1139/f67-085 2024-09-05T04:11:13Z During the parr–smolt transformation in Atlantic salmon, silvery materials were found beneath the scales (scale layer) and deep in the dermis adjacent to the muscle (skin layer). Both layers were thicker in smolts than in parr and both layers contained guanine and lesser amounts of hypoxanthine.Changes in levels of guanine, hypoxanthine, and the ratio between them (G/H) were measured from late December to late May on 2-year-old parr held in the laboratory under natural photoperiods and at temperatures varying from 6.0 in December to 9.5 C in late May. The change from parr to silvery parr during February and March accompanied sharp increases in guanine, hypoxanthine, and G/H values in the skin layer with less marked increases in the scale layer. The change from silvery parr to smolts during April and May accompanied sharp increases in guanine, hypoxanthine, and G/H values in the scale layer but no change occurred in the trend already established in the skin layer.Parr held all winter under stream conditions and examined in early April possessed purine levels and G/H ratios in the skin and scale layers comparable to those in laboratory fish during the previous December.Silvery parr captured migrating seaward in early June had purine levels and G/H ratios in the scale layer similar to those in laboratory smolts in late May but skin guanine values were much lower and the G/H ratio in the skin was extremely low. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing Journal of the Fisheries Research Board of Canada 24 5 955 964 |
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Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
During the parr–smolt transformation in Atlantic salmon, silvery materials were found beneath the scales (scale layer) and deep in the dermis adjacent to the muscle (skin layer). Both layers were thicker in smolts than in parr and both layers contained guanine and lesser amounts of hypoxanthine.Changes in levels of guanine, hypoxanthine, and the ratio between them (G/H) were measured from late December to late May on 2-year-old parr held in the laboratory under natural photoperiods and at temperatures varying from 6.0 in December to 9.5 C in late May. The change from parr to silvery parr during February and March accompanied sharp increases in guanine, hypoxanthine, and G/H values in the skin layer with less marked increases in the scale layer. The change from silvery parr to smolts during April and May accompanied sharp increases in guanine, hypoxanthine, and G/H values in the scale layer but no change occurred in the trend already established in the skin layer.Parr held all winter under stream conditions and examined in early April possessed purine levels and G/H ratios in the skin and scale layers comparable to those in laboratory fish during the previous December.Silvery parr captured migrating seaward in early June had purine levels and G/H ratios in the scale layer similar to those in laboratory smolts in late May but skin guanine values were much lower and the G/H ratio in the skin was extremely low. |
format |
Article in Journal/Newspaper |
author |
Johnston, C. E. Eales, J. G. |
spellingShingle |
Johnston, C. E. Eales, J. G. Purines in the Integument of the Atlantic Salmon ( Salmo salar) During Parr–Smolt Transformation |
author_facet |
Johnston, C. E. Eales, J. G. |
author_sort |
Johnston, C. E. |
title |
Purines in the Integument of the Atlantic Salmon ( Salmo salar) During Parr–Smolt Transformation |
title_short |
Purines in the Integument of the Atlantic Salmon ( Salmo salar) During Parr–Smolt Transformation |
title_full |
Purines in the Integument of the Atlantic Salmon ( Salmo salar) During Parr–Smolt Transformation |
title_fullStr |
Purines in the Integument of the Atlantic Salmon ( Salmo salar) During Parr–Smolt Transformation |
title_full_unstemmed |
Purines in the Integument of the Atlantic Salmon ( Salmo salar) During Parr–Smolt Transformation |
title_sort |
purines in the integument of the atlantic salmon ( salmo salar) during parr–smolt transformation |
publisher |
Canadian Science Publishing |
publishDate |
1967 |
url |
http://dx.doi.org/10.1139/f67-085 http://www.nrcresearchpress.com/doi/pdf/10.1139/f67-085 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of the Fisheries Research Board of Canada volume 24, issue 5, page 955-964 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f67-085 |
container_title |
Journal of the Fisheries Research Board of Canada |
container_volume |
24 |
container_issue |
5 |
container_start_page |
955 |
op_container_end_page |
964 |
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1810432456191377408 |