The effect of stress on the stomach of the European eel, Anguilla anguilla L.
The gastrointestinal tract is a system that is very sensitive to stress‐like conditions in mammals. Fish display physiological reactions to stress that are fundamentally similar to those of the‘General Adaptation Syndrome’ in higher vertebrates. An investigation was therefore undertaken to determine...
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Wiley
1982
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crwiley:10.1111/j.1095-8649.1982.tb02855.x 2024-06-23T07:45:33+00:00 The effect of stress on the stomach of the European eel, Anguilla anguilla L. Peters, G. 1982 http://dx.doi.org/10.1111/j.1095-8649.1982.tb02855.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1982.tb02855.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1982.tb02855.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 21, issue 5, page 497-512 ISSN 0022-1112 1095-8649 journal-article 1982 crwiley https://doi.org/10.1111/j.1095-8649.1982.tb02855.x 2024-05-31T08:14:02Z The gastrointestinal tract is a system that is very sensitive to stress‐like conditions in mammals. Fish display physiological reactions to stress that are fundamentally similar to those of the‘General Adaptation Syndrome’ in higher vertebrates. An investigation was therefore undertaken to determine if morphological changes equivalent to those affecting the stomachs of mammals also occur in fish under stress. Conflict for social dominance served as the stressor. The unavoidable confrontation with a dominant fish in a tank proved to produce great stress for the subordinate eel. This was demonstrated by a number of physiological and haematological parameters. Stressed eels have shrunken stomachs, the consistency of which is translucent and soft. The mucous membrane folds flatten or disappear. The mucous epithelium atrophies and during this process numerous residual bodies appear. The cell‐to‐cell contact loosens. The gastric glands degenerate developing large intracellular cavities, vacuolated ER and swollen mitochondria. The connective tissue proliferates replacing the necrotic glands. The submucosal vessels contract, thereby disturbing the circulation. The consequences of the gastric atrophy (increased self‐digestion, reduction of the immunological barrier, interference with protein digestion, endocrine function, etc.) are discussed. Article in Journal/Newspaper Anguilla anguilla Wiley Online Library Journal of Fish Biology 21 5 497 512 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
The gastrointestinal tract is a system that is very sensitive to stress‐like conditions in mammals. Fish display physiological reactions to stress that are fundamentally similar to those of the‘General Adaptation Syndrome’ in higher vertebrates. An investigation was therefore undertaken to determine if morphological changes equivalent to those affecting the stomachs of mammals also occur in fish under stress. Conflict for social dominance served as the stressor. The unavoidable confrontation with a dominant fish in a tank proved to produce great stress for the subordinate eel. This was demonstrated by a number of physiological and haematological parameters. Stressed eels have shrunken stomachs, the consistency of which is translucent and soft. The mucous membrane folds flatten or disappear. The mucous epithelium atrophies and during this process numerous residual bodies appear. The cell‐to‐cell contact loosens. The gastric glands degenerate developing large intracellular cavities, vacuolated ER and swollen mitochondria. The connective tissue proliferates replacing the necrotic glands. The submucosal vessels contract, thereby disturbing the circulation. The consequences of the gastric atrophy (increased self‐digestion, reduction of the immunological barrier, interference with protein digestion, endocrine function, etc.) are discussed. |
format |
Article in Journal/Newspaper |
author |
Peters, G. |
spellingShingle |
Peters, G. The effect of stress on the stomach of the European eel, Anguilla anguilla L. |
author_facet |
Peters, G. |
author_sort |
Peters, G. |
title |
The effect of stress on the stomach of the European eel, Anguilla anguilla L. |
title_short |
The effect of stress on the stomach of the European eel, Anguilla anguilla L. |
title_full |
The effect of stress on the stomach of the European eel, Anguilla anguilla L. |
title_fullStr |
The effect of stress on the stomach of the European eel, Anguilla anguilla L. |
title_full_unstemmed |
The effect of stress on the stomach of the European eel, Anguilla anguilla L. |
title_sort |
effect of stress on the stomach of the european eel, anguilla anguilla l. |
publisher |
Wiley |
publishDate |
1982 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1982.tb02855.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1982.tb02855.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1982.tb02855.x |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
Journal of Fish Biology volume 21, issue 5, page 497-512 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1982.tb02855.x |
container_title |
Journal of Fish Biology |
container_volume |
21 |
container_issue |
5 |
container_start_page |
497 |
op_container_end_page |
512 |
_version_ |
1802640814846771200 |