An enriched environment promotes shelter-seeking behaviour and survival of hatchery-produced juvenile European lobster (Homarus gammarus)
The high loss of newly released hatchery-reared European lobster (Homarus gammarus) juveniles for stock enhancement is believed to be the result of maladaptive anti-predator behaviour connected to deprived stimuli in the hatchery environment. Our objective was to learn if an enriched hatchery enviro...
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Online Access: | https://hdl.handle.net/1956/15257 https://doi.org/10.1371/journal.pone.0159807 |
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ftunivbergen:oai:bora.uib.no:1956/15257 2023-05-15T16:08:46+02:00 An enriched environment promotes shelter-seeking behaviour and survival of hatchery-produced juvenile European lobster (Homarus gammarus) Aspaas, Stian Grefsrud, Ellen Sofie Fernø, Anders Jensen, Knut Helge Trengereid, Henrik Agnalt, Ann-Lisbeth 2016-11-23T11:45:54Z application/pdf https://hdl.handle.net/1956/15257 https://doi.org/10.1371/journal.pone.0159807 eng eng PLoS Havforskningsinstituttet: 82120-02 urn:issn:1932-6203 https://hdl.handle.net/1956/15257 https://doi.org/10.1371/journal.pone.0159807 cristin:1402326 Attribution CC BY http://creativecommons.org/licenses/by/4.0 Copyright 2016 The Author(s) Peer reviewed Journal article 2016 ftunivbergen https://doi.org/10.1371/journal.pone.0159807 2023-03-14T17:39:24Z The high loss of newly released hatchery-reared European lobster (Homarus gammarus) juveniles for stock enhancement is believed to be the result of maladaptive anti-predator behaviour connected to deprived stimuli in the hatchery environment. Our objective was to learn if an enriched hatchery environment enhances shelter-seeking behaviour and survival. In the “naïve” treatment, the juveniles were raised in single compartments without substrate and shelter whereas juveniles in the “exposed” treatment experienced substrate, shelter and interactions with conspecifics. Three experiments with increasing complexity were conducted. Few differences in shelter-seeking behaviour were found between treatments when one naïve or one exposed juvenile were observed alone. When observing interactions between one naïve and one exposed juvenile competing for shelter, naïve juveniles more often initiated the first aggressive encounter. The third experiment was set up to simulate a release for stock enhancement. Naïve and exposed juveniles were introduced to a semi-natural environment including substrate, a limited number of shelters and interactions with conspecifics. Shelter occupancy was recorded three times during a period of 35 days. Exposed juveniles occupied more shelters, grew larger and had higher survival compared with naïve juveniles. Our results demonstrate that experience of environmental complexity and social interactions increase shelter-seeking ability and survival in hatchery reared lobster juveniles. publishedVersion Article in Journal/Newspaper European lobster Homarus gammarus University of Bergen: Bergen Open Research Archive (BORA-UiB) PLOS ONE 11 8 e0159807 |
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University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
language |
English |
description |
The high loss of newly released hatchery-reared European lobster (Homarus gammarus) juveniles for stock enhancement is believed to be the result of maladaptive anti-predator behaviour connected to deprived stimuli in the hatchery environment. Our objective was to learn if an enriched hatchery environment enhances shelter-seeking behaviour and survival. In the “naïve” treatment, the juveniles were raised in single compartments without substrate and shelter whereas juveniles in the “exposed” treatment experienced substrate, shelter and interactions with conspecifics. Three experiments with increasing complexity were conducted. Few differences in shelter-seeking behaviour were found between treatments when one naïve or one exposed juvenile were observed alone. When observing interactions between one naïve and one exposed juvenile competing for shelter, naïve juveniles more often initiated the first aggressive encounter. The third experiment was set up to simulate a release for stock enhancement. Naïve and exposed juveniles were introduced to a semi-natural environment including substrate, a limited number of shelters and interactions with conspecifics. Shelter occupancy was recorded three times during a period of 35 days. Exposed juveniles occupied more shelters, grew larger and had higher survival compared with naïve juveniles. Our results demonstrate that experience of environmental complexity and social interactions increase shelter-seeking ability and survival in hatchery reared lobster juveniles. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Aspaas, Stian Grefsrud, Ellen Sofie Fernø, Anders Jensen, Knut Helge Trengereid, Henrik Agnalt, Ann-Lisbeth |
spellingShingle |
Aspaas, Stian Grefsrud, Ellen Sofie Fernø, Anders Jensen, Knut Helge Trengereid, Henrik Agnalt, Ann-Lisbeth An enriched environment promotes shelter-seeking behaviour and survival of hatchery-produced juvenile European lobster (Homarus gammarus) |
author_facet |
Aspaas, Stian Grefsrud, Ellen Sofie Fernø, Anders Jensen, Knut Helge Trengereid, Henrik Agnalt, Ann-Lisbeth |
author_sort |
Aspaas, Stian |
title |
An enriched environment promotes shelter-seeking behaviour and survival of hatchery-produced juvenile European lobster (Homarus gammarus) |
title_short |
An enriched environment promotes shelter-seeking behaviour and survival of hatchery-produced juvenile European lobster (Homarus gammarus) |
title_full |
An enriched environment promotes shelter-seeking behaviour and survival of hatchery-produced juvenile European lobster (Homarus gammarus) |
title_fullStr |
An enriched environment promotes shelter-seeking behaviour and survival of hatchery-produced juvenile European lobster (Homarus gammarus) |
title_full_unstemmed |
An enriched environment promotes shelter-seeking behaviour and survival of hatchery-produced juvenile European lobster (Homarus gammarus) |
title_sort |
enriched environment promotes shelter-seeking behaviour and survival of hatchery-produced juvenile european lobster (homarus gammarus) |
publisher |
PLoS |
publishDate |
2016 |
url |
https://hdl.handle.net/1956/15257 https://doi.org/10.1371/journal.pone.0159807 |
genre |
European lobster Homarus gammarus |
genre_facet |
European lobster Homarus gammarus |
op_relation |
Havforskningsinstituttet: 82120-02 urn:issn:1932-6203 https://hdl.handle.net/1956/15257 https://doi.org/10.1371/journal.pone.0159807 cristin:1402326 |
op_rights |
Attribution CC BY http://creativecommons.org/licenses/by/4.0 Copyright 2016 The Author(s) |
op_doi |
https://doi.org/10.1371/journal.pone.0159807 |
container_title |
PLOS ONE |
container_volume |
11 |
container_issue |
8 |
container_start_page |
e0159807 |
_version_ |
1766404789798699008 |