The Effect of Stress and Starvation on Bratn Serotonin Utilization in Arctic Charr (Salvelinus Alpinus)
The effects of stress and starvation on brain levels of serotonin (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA) were studied in Arctic charr ( Salvelinus alpinus ). Three experimental protocols were used to elucidate (1) the effect of stress in fish given food, (2) the effect of starvation, and (3)...
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1992
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fthighwire:oai:open-archive.highwire.org:jexbio:165/1/229 2023-05-15T14:29:57+02:00 The Effect of Stress and Starvation on Bratn Serotonin Utilization in Arctic Charr (Salvelinus Alpinus) WINBERG, SVANTE NILSSON, GÖRAN E. OLSÉN, K. HÅKAN 1992-04-01 00:00:00.0 text/html http://jeb.biologists.org/cgi/content/short/165/1/229 en eng Company of Biologists http://jeb.biologists.org/cgi/content/short/165/1/229 Copyright (C) 1992, Company of Biologists Journal Articles TEXT 1992 fthighwire 2013-05-27T06:22:43Z The effects of stress and starvation on brain levels of serotonin (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA) were studied in Arctic charr ( Salvelinus alpinus ). Three experimental protocols were used to elucidate (1) the effect of stress in fish given food, (2) the effect of starvation, and (3) the effect of stress in fish deprived of food. In the stress experiments, fish were stressed three times a day over a four-week period, and in the starvation experiment the fish were starved for a four-week period. Stressed fish, whether given food or not, showed significantly higher concentrations of 5-HIAA, the main 5-HT metabolite, in both the telencephalon and the brain stem. The 5-HIAA/5-HT ratio (an index of serotonergic activity) was also significantly increased in the brain of stressed fish. In the telencephalon of starved fish, the 5-HT concentration was significantly decreased. However, starvation had no effect on 5-HIAA concentrations or 5-HIAA/5-HT ratios in either the telencephalon or the brain stem. These results suggest that stress increases brain serotonergic activity in Arctic charr, while starvation has no effect on the utilization of this transmitter system. It is suggested that stress could be a mediator of the increased 5-HTAA levels and 5-HIAA/5-HT ratios recently observed in low-ranking Arctic charr in a dominance hierarch. Text Arctic charr Arctic Salvelinus alpinus HighWire Press (Stanford University) Arctic |
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Journal Articles |
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Journal Articles WINBERG, SVANTE NILSSON, GÖRAN E. OLSÉN, K. HÅKAN The Effect of Stress and Starvation on Bratn Serotonin Utilization in Arctic Charr (Salvelinus Alpinus) |
topic_facet |
Journal Articles |
description |
The effects of stress and starvation on brain levels of serotonin (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA) were studied in Arctic charr ( Salvelinus alpinus ). Three experimental protocols were used to elucidate (1) the effect of stress in fish given food, (2) the effect of starvation, and (3) the effect of stress in fish deprived of food. In the stress experiments, fish were stressed three times a day over a four-week period, and in the starvation experiment the fish were starved for a four-week period. Stressed fish, whether given food or not, showed significantly higher concentrations of 5-HIAA, the main 5-HT metabolite, in both the telencephalon and the brain stem. The 5-HIAA/5-HT ratio (an index of serotonergic activity) was also significantly increased in the brain of stressed fish. In the telencephalon of starved fish, the 5-HT concentration was significantly decreased. However, starvation had no effect on 5-HIAA concentrations or 5-HIAA/5-HT ratios in either the telencephalon or the brain stem. These results suggest that stress increases brain serotonergic activity in Arctic charr, while starvation has no effect on the utilization of this transmitter system. It is suggested that stress could be a mediator of the increased 5-HTAA levels and 5-HIAA/5-HT ratios recently observed in low-ranking Arctic charr in a dominance hierarch. |
format |
Text |
author |
WINBERG, SVANTE NILSSON, GÖRAN E. OLSÉN, K. HÅKAN |
author_facet |
WINBERG, SVANTE NILSSON, GÖRAN E. OLSÉN, K. HÅKAN |
author_sort |
WINBERG, SVANTE |
title |
The Effect of Stress and Starvation on Bratn Serotonin Utilization in Arctic Charr (Salvelinus Alpinus) |
title_short |
The Effect of Stress and Starvation on Bratn Serotonin Utilization in Arctic Charr (Salvelinus Alpinus) |
title_full |
The Effect of Stress and Starvation on Bratn Serotonin Utilization in Arctic Charr (Salvelinus Alpinus) |
title_fullStr |
The Effect of Stress and Starvation on Bratn Serotonin Utilization in Arctic Charr (Salvelinus Alpinus) |
title_full_unstemmed |
The Effect of Stress and Starvation on Bratn Serotonin Utilization in Arctic Charr (Salvelinus Alpinus) |
title_sort |
effect of stress and starvation on bratn serotonin utilization in arctic charr (salvelinus alpinus) |
publisher |
Company of Biologists |
publishDate |
1992 |
url |
http://jeb.biologists.org/cgi/content/short/165/1/229 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_relation |
http://jeb.biologists.org/cgi/content/short/165/1/229 |
op_rights |
Copyright (C) 1992, Company of Biologists |
_version_ |
1766303905972486144 |