Predator‐induced hyperventilation in wild and hatchery Atlantic salmon fry
Following exposure to a predator stimulus (a brown trout Salmo trutta ), the opercular rate of Atlantic salmon Salmo salar fry increased by 35·3 ± 11·0%(mean ± 95% CI). The time taken for opercular rate to decline to baseline levels depended upon the occurrence of any associated locomotory activity....
Published in: | Journal of Fish Biology |
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crwiley:10.1111/j.0022-1112.2004.00543.x 2024-09-09T19:30:27+00:00 Predator‐induced hyperventilation in wild and hatchery Atlantic salmon fry Hawkins, L. A. Armstrong, J. D. Magurran, A. E. 2004 http://dx.doi.org/10.1111/j.0022-1112.2004.00543.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-1112.2004.00543.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-1112.2004.00543.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 65, issue s1, page 88-100 ISSN 0022-1112 1095-8649 journal-article 2004 crwiley https://doi.org/10.1111/j.0022-1112.2004.00543.x 2024-08-13T04:18:18Z Following exposure to a predator stimulus (a brown trout Salmo trutta ), the opercular rate of Atlantic salmon Salmo salar fry increased by 35·3 ± 11·0%(mean ± 95% CI). The time taken for opercular rate to decline to baseline levels depended upon the occurrence of any associated locomotory activity. Opercular rates of fish that dashed when exposed remained elevated for 38·2 ± 20·6 min, whereas those of individuals that did not move (‘freezers’) recovered within 7·2 ± 2·9 min. The duration that opercular rate remained elevated was positively correlated with the magnitude of the elevation, which was higher in ‘dashers’ than freezers. The maximum opercular rate in ‘freezers’ was similar between wild fry and hatchery‐reared fry (from wild parents). There was a significant delay, however, in hatchery compared with wild fry in the time until peak ventilatory response and onset in the decline phase. This difference in opercular response suggests that hatchery fish were slower to realize fully the potential danger from the predator. Any delay in response could be directly attributed to the effect of hatchery‐rearing environment, rather than domestication or hatchery selection effects. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Biology 65 s1 88 100 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Following exposure to a predator stimulus (a brown trout Salmo trutta ), the opercular rate of Atlantic salmon Salmo salar fry increased by 35·3 ± 11·0%(mean ± 95% CI). The time taken for opercular rate to decline to baseline levels depended upon the occurrence of any associated locomotory activity. Opercular rates of fish that dashed when exposed remained elevated for 38·2 ± 20·6 min, whereas those of individuals that did not move (‘freezers’) recovered within 7·2 ± 2·9 min. The duration that opercular rate remained elevated was positively correlated with the magnitude of the elevation, which was higher in ‘dashers’ than freezers. The maximum opercular rate in ‘freezers’ was similar between wild fry and hatchery‐reared fry (from wild parents). There was a significant delay, however, in hatchery compared with wild fry in the time until peak ventilatory response and onset in the decline phase. This difference in opercular response suggests that hatchery fish were slower to realize fully the potential danger from the predator. Any delay in response could be directly attributed to the effect of hatchery‐rearing environment, rather than domestication or hatchery selection effects. |
format |
Article in Journal/Newspaper |
author |
Hawkins, L. A. Armstrong, J. D. Magurran, A. E. |
spellingShingle |
Hawkins, L. A. Armstrong, J. D. Magurran, A. E. Predator‐induced hyperventilation in wild and hatchery Atlantic salmon fry |
author_facet |
Hawkins, L. A. Armstrong, J. D. Magurran, A. E. |
author_sort |
Hawkins, L. A. |
title |
Predator‐induced hyperventilation in wild and hatchery Atlantic salmon fry |
title_short |
Predator‐induced hyperventilation in wild and hatchery Atlantic salmon fry |
title_full |
Predator‐induced hyperventilation in wild and hatchery Atlantic salmon fry |
title_fullStr |
Predator‐induced hyperventilation in wild and hatchery Atlantic salmon fry |
title_full_unstemmed |
Predator‐induced hyperventilation in wild and hatchery Atlantic salmon fry |
title_sort |
predator‐induced hyperventilation in wild and hatchery atlantic salmon fry |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1111/j.0022-1112.2004.00543.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-1112.2004.00543.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-1112.2004.00543.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 65, issue s1, page 88-100 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.0022-1112.2004.00543.x |
container_title |
Journal of Fish Biology |
container_volume |
65 |
container_issue |
s1 |
container_start_page |
88 |
op_container_end_page |
100 |
_version_ |
1809899427997941760 |