Physiological Causes and Consequences of Social Status in Salmonid Fish
Social interactions in small groups of juvenile rainbow trout (Oncorhynchus mykiss) lead to the formation of dominance hierarchies. Dominant fish hold better positions in the environment, gain a larger share of the available food and exhibit aggression towards fish lower in the hierarchy. By contras...
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Language: | English |
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Oxford University Press
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Online Access: | http://hdl.handle.net/10072/427679 https://doi.org/10.1093/icb/45.2.263 |
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ftgriffithuniv:oai:research-repository.griffith.edu.au:10072/427679 2024-01-07T09:42:15+01:00 Physiological Causes and Consequences of Social Status in Salmonid Fish Gilmour, KM DiBattista, JD Thomas, JB 2005 http://hdl.handle.net/10072/427679 https://doi.org/10.1093/icb/45.2.263 English eng Oxford University Press Integrative and Comparative Biology Gilmour, KM; DiBattista, JD; Thomas, JB, Physiological Causes and Consequences of Social Status in Salmonid Fish, Integrative and Comparative Biology, 2005, 45 (2), pp. 263-273 http://hdl.handle.net/10072/427679 1540-7063 doi:10.1093/icb/45.2.263 metadata only access Ecology Evolutionary biology Zoology Science & Technology Life Sciences & Biomedicine TROUT ONCORHYNCHUS-MYKISS JUVENILE ATLANTIC SALMON Journal article 2005 ftgriffithuniv https://doi.org/10.1093/icb/45.2.263 2023-12-11T23:26:24Z Social interactions in small groups of juvenile rainbow trout (Oncorhynchus mykiss) lead to the formation of dominance hierarchies. Dominant fish hold better positions in the environment, gain a larger share of the available food and exhibit aggression towards fish lower in the hierarchy. By contrast, subordinate fish exhibit behavioural inhibition, including reduced activity and feeding. The behavioural characteristics associated with social status are likely the result of changes in brain monoamines resulting from social interactions. Whereas substantial physiological benefits, including higher growth rates and condition factor, are experienced by dominant trout, low social status appears to be a chronic stress, as indicated by sustained elevation of circulating cortisol concentrations in subordinate fish. High cortisol levels, in turn, may be responsible for many of the deleterious physiological consequences of low social status, including lower growth rates and condition factor, immunosuppression and increased mortality. Circulating cortisol levels may also be a factor in determining the outcome of social interactions in pairs of rainbow trout, and hence in determining social status. Rainbow trout treated with cortisol were significantly more likely to become subordinate in paired encounters with smaller untreated conspecifics. No Full Text Article in Journal/Newspaper Atlantic salmon Griffith University: Griffith Research Online Integrative and Comparative Biology 45 2 263 273 |
institution |
Open Polar |
collection |
Griffith University: Griffith Research Online |
op_collection_id |
ftgriffithuniv |
language |
English |
topic |
Ecology Evolutionary biology Zoology Science & Technology Life Sciences & Biomedicine TROUT ONCORHYNCHUS-MYKISS JUVENILE ATLANTIC SALMON |
spellingShingle |
Ecology Evolutionary biology Zoology Science & Technology Life Sciences & Biomedicine TROUT ONCORHYNCHUS-MYKISS JUVENILE ATLANTIC SALMON Gilmour, KM DiBattista, JD Thomas, JB Physiological Causes and Consequences of Social Status in Salmonid Fish |
topic_facet |
Ecology Evolutionary biology Zoology Science & Technology Life Sciences & Biomedicine TROUT ONCORHYNCHUS-MYKISS JUVENILE ATLANTIC SALMON |
description |
Social interactions in small groups of juvenile rainbow trout (Oncorhynchus mykiss) lead to the formation of dominance hierarchies. Dominant fish hold better positions in the environment, gain a larger share of the available food and exhibit aggression towards fish lower in the hierarchy. By contrast, subordinate fish exhibit behavioural inhibition, including reduced activity and feeding. The behavioural characteristics associated with social status are likely the result of changes in brain monoamines resulting from social interactions. Whereas substantial physiological benefits, including higher growth rates and condition factor, are experienced by dominant trout, low social status appears to be a chronic stress, as indicated by sustained elevation of circulating cortisol concentrations in subordinate fish. High cortisol levels, in turn, may be responsible for many of the deleterious physiological consequences of low social status, including lower growth rates and condition factor, immunosuppression and increased mortality. Circulating cortisol levels may also be a factor in determining the outcome of social interactions in pairs of rainbow trout, and hence in determining social status. Rainbow trout treated with cortisol were significantly more likely to become subordinate in paired encounters with smaller untreated conspecifics. No Full Text |
format |
Article in Journal/Newspaper |
author |
Gilmour, KM DiBattista, JD Thomas, JB |
author_facet |
Gilmour, KM DiBattista, JD Thomas, JB |
author_sort |
Gilmour, KM |
title |
Physiological Causes and Consequences of Social Status in Salmonid Fish |
title_short |
Physiological Causes and Consequences of Social Status in Salmonid Fish |
title_full |
Physiological Causes and Consequences of Social Status in Salmonid Fish |
title_fullStr |
Physiological Causes and Consequences of Social Status in Salmonid Fish |
title_full_unstemmed |
Physiological Causes and Consequences of Social Status in Salmonid Fish |
title_sort |
physiological causes and consequences of social status in salmonid fish |
publisher |
Oxford University Press |
publishDate |
2005 |
url |
http://hdl.handle.net/10072/427679 https://doi.org/10.1093/icb/45.2.263 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_relation |
Integrative and Comparative Biology Gilmour, KM; DiBattista, JD; Thomas, JB, Physiological Causes and Consequences of Social Status in Salmonid Fish, Integrative and Comparative Biology, 2005, 45 (2), pp. 263-273 http://hdl.handle.net/10072/427679 1540-7063 doi:10.1093/icb/45.2.263 |
op_rights |
metadata only access |
op_doi |
https://doi.org/10.1093/icb/45.2.263 |
container_title |
Integrative and Comparative Biology |
container_volume |
45 |
container_issue |
2 |
container_start_page |
263 |
op_container_end_page |
273 |
_version_ |
1787423196056649728 |