Protection from fishing improves body growth of an exploited species
Hunting and fishing are often size-selective, which favours slow body growth. In addition, fast growth rate has been shown to be positively correlated with behavioural traits that increase encounter rates and catchability in passive fishing gears such as baited traps. This harvest-induced selection...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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Online Access: | https://hdl.handle.net/11250/3043307 https://doi.org/10.1098/rspb.2022.1718 |
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ftagderuniv:oai:uia.brage.unit.no:11250/3043307 2023-05-15T16:08:48+02:00 Protection from fishing improves body growth of an exploited species Sørdalen, Tonje Knutsen Halvorsen, Kim Aleksander Tallaksen Olsen, Esben Moland 2022 application/pdf https://hdl.handle.net/11250/3043307 https://doi.org/10.1098/rspb.2022.1718 eng eng Royal Society Publishing Sørdalen, T. K., Halvorsen, K. A. T. & Olsen, E. M. (2022). Proceedings of the Royal Society of London. Biological Sciences, 289: 20221718, 1-9. doi: urn:issn:0962-8452 https://hdl.handle.net/11250/3043307 https://doi.org/10.1098/rspb.2022.1718 cristin:2081032 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2022 The Author(s) CC-BY 9 289 Proceedings of the Royal Society of London. Biological Sciences 20221718 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Peer reviewed Journal article 2022 ftagderuniv https://doi.org/10.1098/rspb.2022.1718 2023-01-18T23:42:27Z Hunting and fishing are often size-selective, which favours slow body growth. In addition, fast growth rate has been shown to be positively correlated with behavioural traits that increase encounter rates and catchability in passive fishing gears such as baited traps. This harvest-induced selection should be effectively eliminated in no-take marine-protected areas (MPAs) unless strong density dependence results in reduced growth rates. We compared body growth of European lobster (Homarus gammarus) between three MPAs and three fished areas. After 14 years of protection from intensive, size-selective lobster fisheries, the densities in MPAs have increased considerably, and we demonstrate that females moult more frequently and grow more during each moult in the MPAs. A similar, but weaker pattern was evident for males. This study suggests that MPAs can shield a wild population from slow-growth selection, which can explain the rapid recovery of size structure following implementation. If slow-growth selection is a widespread phenomenon in fisheries, the effectiveness of MPAs as a management tool can be higher than currently anticipated. publishedVersion Paid open access Article in Journal/Newspaper European lobster Homarus gammarus Unvieristy of Agder: AURA (Brage) Proceedings of the Royal Society B: Biological Sciences 289 1987 |
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Open Polar |
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Unvieristy of Agder: AURA (Brage) |
op_collection_id |
ftagderuniv |
language |
English |
topic |
VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
spellingShingle |
VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Sørdalen, Tonje Knutsen Halvorsen, Kim Aleksander Tallaksen Olsen, Esben Moland Protection from fishing improves body growth of an exploited species |
topic_facet |
VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
description |
Hunting and fishing are often size-selective, which favours slow body growth. In addition, fast growth rate has been shown to be positively correlated with behavioural traits that increase encounter rates and catchability in passive fishing gears such as baited traps. This harvest-induced selection should be effectively eliminated in no-take marine-protected areas (MPAs) unless strong density dependence results in reduced growth rates. We compared body growth of European lobster (Homarus gammarus) between three MPAs and three fished areas. After 14 years of protection from intensive, size-selective lobster fisheries, the densities in MPAs have increased considerably, and we demonstrate that females moult more frequently and grow more during each moult in the MPAs. A similar, but weaker pattern was evident for males. This study suggests that MPAs can shield a wild population from slow-growth selection, which can explain the rapid recovery of size structure following implementation. If slow-growth selection is a widespread phenomenon in fisheries, the effectiveness of MPAs as a management tool can be higher than currently anticipated. publishedVersion Paid open access |
format |
Article in Journal/Newspaper |
author |
Sørdalen, Tonje Knutsen Halvorsen, Kim Aleksander Tallaksen Olsen, Esben Moland |
author_facet |
Sørdalen, Tonje Knutsen Halvorsen, Kim Aleksander Tallaksen Olsen, Esben Moland |
author_sort |
Sørdalen, Tonje Knutsen |
title |
Protection from fishing improves body growth of an exploited species |
title_short |
Protection from fishing improves body growth of an exploited species |
title_full |
Protection from fishing improves body growth of an exploited species |
title_fullStr |
Protection from fishing improves body growth of an exploited species |
title_full_unstemmed |
Protection from fishing improves body growth of an exploited species |
title_sort |
protection from fishing improves body growth of an exploited species |
publisher |
Royal Society Publishing |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3043307 https://doi.org/10.1098/rspb.2022.1718 |
genre |
European lobster Homarus gammarus |
genre_facet |
European lobster Homarus gammarus |
op_source |
9 289 Proceedings of the Royal Society of London. Biological Sciences 20221718 |
op_relation |
Sørdalen, T. K., Halvorsen, K. A. T. & Olsen, E. M. (2022). Proceedings of the Royal Society of London. Biological Sciences, 289: 20221718, 1-9. doi: urn:issn:0962-8452 https://hdl.handle.net/11250/3043307 https://doi.org/10.1098/rspb.2022.1718 cristin:2081032 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2022 The Author(s) |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1098/rspb.2022.1718 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
289 |
container_issue |
1987 |
_version_ |
1766404822020390912 |