Are antipredator behaviours of hatchery Salmo salar juveniles similar to wild juveniles?
This study explores how antipredator behaviour of juvenile Atlantic salmon Salmo salar developed during conventional hatchery rearing of eggs from wild brood stock, compared with the behaviour of wild‐caught juveniles from the same population. Juveniles aged 1+ years were tested in two unfamiliar en...
Published in: | Journal of Fish Biology |
---|---|
Main Author: | |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2017
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/jfb.13268 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfb.13268 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.13268 |
id |
crwiley:10.1111/jfb.13268 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/jfb.13268 2024-09-15T17:56:26+00:00 Are antipredator behaviours of hatchery Salmo salar juveniles similar to wild juveniles? Salvanes, A. G. V. The Norwegian Research Council University of Bergen 2017 http://dx.doi.org/10.1111/jfb.13268 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfb.13268 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.13268 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 90, issue 5, page 1785-1796 ISSN 0022-1112 1095-8649 journal-article 2017 crwiley https://doi.org/10.1111/jfb.13268 2024-08-13T04:13:05Z This study explores how antipredator behaviour of juvenile Atlantic salmon Salmo salar developed during conventional hatchery rearing of eggs from wild brood stock, compared with the behaviour of wild‐caught juveniles from the same population. Juveniles aged 1+ years were tested in two unfamiliar environments; in one S. salar were presented with simulated predator attacks and in the other they were given the opportunity to explore an open‐field arena. No difference was found in their spontaneous escape responses or ventilation rate (reflex responses) after simulated predator attacks. Hatchery‐reared juveniles were more risk‐prone in their behaviours than wild‐caught individuals. Hatchery juveniles stayed less time in association with shelter. In the open‐field arena, hatchery juveniles were more active than wild juveniles. Hatchery juveniles were also immobile for less time and spent a shorter amount of time than wild juveniles in the fringe of the open‐field arena. Salmo salar size had no effect on the observed behaviour. Overall, this study provides empirical evidence that one generation of hatchery rearing does not change reflex responses associated with threats, whereas antipredator behaviour, typically associated with prior experience, was less developed in hatchery‐reared than in wild individuals. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Biology 90 5 1785 1796 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
This study explores how antipredator behaviour of juvenile Atlantic salmon Salmo salar developed during conventional hatchery rearing of eggs from wild brood stock, compared with the behaviour of wild‐caught juveniles from the same population. Juveniles aged 1+ years were tested in two unfamiliar environments; in one S. salar were presented with simulated predator attacks and in the other they were given the opportunity to explore an open‐field arena. No difference was found in their spontaneous escape responses or ventilation rate (reflex responses) after simulated predator attacks. Hatchery‐reared juveniles were more risk‐prone in their behaviours than wild‐caught individuals. Hatchery juveniles stayed less time in association with shelter. In the open‐field arena, hatchery juveniles were more active than wild juveniles. Hatchery juveniles were also immobile for less time and spent a shorter amount of time than wild juveniles in the fringe of the open‐field arena. Salmo salar size had no effect on the observed behaviour. Overall, this study provides empirical evidence that one generation of hatchery rearing does not change reflex responses associated with threats, whereas antipredator behaviour, typically associated with prior experience, was less developed in hatchery‐reared than in wild individuals. |
author2 |
The Norwegian Research Council University of Bergen |
format |
Article in Journal/Newspaper |
author |
Salvanes, A. G. V. |
spellingShingle |
Salvanes, A. G. V. Are antipredator behaviours of hatchery Salmo salar juveniles similar to wild juveniles? |
author_facet |
Salvanes, A. G. V. |
author_sort |
Salvanes, A. G. V. |
title |
Are antipredator behaviours of hatchery Salmo salar juveniles similar to wild juveniles? |
title_short |
Are antipredator behaviours of hatchery Salmo salar juveniles similar to wild juveniles? |
title_full |
Are antipredator behaviours of hatchery Salmo salar juveniles similar to wild juveniles? |
title_fullStr |
Are antipredator behaviours of hatchery Salmo salar juveniles similar to wild juveniles? |
title_full_unstemmed |
Are antipredator behaviours of hatchery Salmo salar juveniles similar to wild juveniles? |
title_sort |
are antipredator behaviours of hatchery salmo salar juveniles similar to wild juveniles? |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1111/jfb.13268 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfb.13268 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.13268 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 90, issue 5, page 1785-1796 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jfb.13268 |
container_title |
Journal of Fish Biology |
container_volume |
90 |
container_issue |
5 |
container_start_page |
1785 |
op_container_end_page |
1796 |
_version_ |
1810432636198322176 |