Physiological and social constraints on growth of Arctic charr, Salvelinus alpinus L.: an investigation of factors leading to stunting
When stunted (runt) Arctic charr, Salvelinus alpinus , were reared together in small groups growth rates were low. Contrary to expectation, there did not arise a rapidly growing despot within each group. It is suggested that the narrow size range offish within groups prevented the rapid formation of...
Published in: | Journal of Fish Biology |
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Language: | English |
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Wiley
1986
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Online Access: | http://dx.doi.org/10.1111/j.1095-8649.1986.tb05174.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1986.tb05174.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1986.tb05174.x |
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crwiley:10.1111/j.1095-8649.1986.tb05174.x 2024-09-09T19:17:08+00:00 Physiological and social constraints on growth of Arctic charr, Salvelinus alpinus L.: an investigation of factors leading to stunting Jobling, M. Reinsnes, T.‐G. 1986 http://dx.doi.org/10.1111/j.1095-8649.1986.tb05174.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1986.tb05174.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1986.tb05174.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 28, issue 3, page 379-384 ISSN 0022-1112 1095-8649 journal-article 1986 crwiley https://doi.org/10.1111/j.1095-8649.1986.tb05174.x 2024-08-20T04:16:42Z When stunted (runt) Arctic charr, Salvelinus alpinus , were reared together in small groups growth rates were low. Contrary to expectation, there did not arise a rapidly growing despot within each group. It is suggested that the narrow size range offish within groups prevented the rapid formation of clear‐cut dominance hierarchies. Fish reared in isolation had significantly higher and more variable rates of growth than those held in groups, demonstrating that social interactions between individuals were responsible for growth suppression of grouped‐reared fish. There were no significant differences in growth rates between fish allowed visual contact with conspecifics and those held in visual isolation, indicating that visual contact is insufficient to cause growth depensation in Arctic charr. Despite the fact that growth rates of stunted (runt) Arctic charr improved when they were held in isolation, the growth rates recorded were substantially lower than those of normal individuals reared under hatchery conditions. It is concluded that physiological (genetic) factors are important in the determination of the slow growth rates of stunted (runt) Arctic charr and that this trend is exacerbated by social interactions with more rapidly growing siblings. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Wiley Online Library Arctic Journal of Fish Biology 28 3 379 384 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
When stunted (runt) Arctic charr, Salvelinus alpinus , were reared together in small groups growth rates were low. Contrary to expectation, there did not arise a rapidly growing despot within each group. It is suggested that the narrow size range offish within groups prevented the rapid formation of clear‐cut dominance hierarchies. Fish reared in isolation had significantly higher and more variable rates of growth than those held in groups, demonstrating that social interactions between individuals were responsible for growth suppression of grouped‐reared fish. There were no significant differences in growth rates between fish allowed visual contact with conspecifics and those held in visual isolation, indicating that visual contact is insufficient to cause growth depensation in Arctic charr. Despite the fact that growth rates of stunted (runt) Arctic charr improved when they were held in isolation, the growth rates recorded were substantially lower than those of normal individuals reared under hatchery conditions. It is concluded that physiological (genetic) factors are important in the determination of the slow growth rates of stunted (runt) Arctic charr and that this trend is exacerbated by social interactions with more rapidly growing siblings. |
format |
Article in Journal/Newspaper |
author |
Jobling, M. Reinsnes, T.‐G. |
spellingShingle |
Jobling, M. Reinsnes, T.‐G. Physiological and social constraints on growth of Arctic charr, Salvelinus alpinus L.: an investigation of factors leading to stunting |
author_facet |
Jobling, M. Reinsnes, T.‐G. |
author_sort |
Jobling, M. |
title |
Physiological and social constraints on growth of Arctic charr, Salvelinus alpinus L.: an investigation of factors leading to stunting |
title_short |
Physiological and social constraints on growth of Arctic charr, Salvelinus alpinus L.: an investigation of factors leading to stunting |
title_full |
Physiological and social constraints on growth of Arctic charr, Salvelinus alpinus L.: an investigation of factors leading to stunting |
title_fullStr |
Physiological and social constraints on growth of Arctic charr, Salvelinus alpinus L.: an investigation of factors leading to stunting |
title_full_unstemmed |
Physiological and social constraints on growth of Arctic charr, Salvelinus alpinus L.: an investigation of factors leading to stunting |
title_sort |
physiological and social constraints on growth of arctic charr, salvelinus alpinus l.: an investigation of factors leading to stunting |
publisher |
Wiley |
publishDate |
1986 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1986.tb05174.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1986.tb05174.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1986.tb05174.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_source |
Journal of Fish Biology volume 28, issue 3, page 379-384 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1986.tb05174.x |
container_title |
Journal of Fish Biology |
container_volume |
28 |
container_issue |
3 |
container_start_page |
379 |
op_container_end_page |
384 |
_version_ |
1809757202470141952 |