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...
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ftpubmed:oai:pubmedcentral.nih.gov:9667365 2023-05-15T16:08:48+02:00 Protection from fishing improves body growth of an exploited species Sørdalen, Tonje Knutsen Halvorsen, Kim Tallaksen Olsen, Esben Moland 2022-11-30 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9667365/ http://www.ncbi.nlm.nih.gov/pubmed/36382520 https://doi.org/10.1098/rspb.2022.1718 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9667365/ http://www.ncbi.nlm.nih.gov/pubmed/36382520 http://dx.doi.org/10.1098/rspb.2022.1718 © 2022 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited. CC-BY Proc Biol Sci Biological Applications Text 2022 ftpubmed https://doi.org/10.1098/rspb.2022.1718 2022-11-27T01:35:14Z 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. Text European lobster Homarus gammarus PubMed Central (PMC) Proceedings of the Royal Society B: Biological Sciences 289 1987 |
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PubMed Central (PMC) |
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ftpubmed |
language |
English |
topic |
Biological Applications |
spellingShingle |
Biological Applications Sørdalen, Tonje Knutsen Halvorsen, Kim Tallaksen Olsen, Esben Moland Protection from fishing improves body growth of an exploited species |
topic_facet |
Biological Applications |
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. |
format |
Text |
author |
Sørdalen, Tonje Knutsen Halvorsen, Kim Tallaksen Olsen, Esben Moland |
author_facet |
Sørdalen, Tonje Knutsen Halvorsen, Kim 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 |
The Royal Society |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9667365/ http://www.ncbi.nlm.nih.gov/pubmed/36382520 https://doi.org/10.1098/rspb.2022.1718 |
genre |
European lobster Homarus gammarus |
genre_facet |
European lobster Homarus gammarus |
op_source |
Proc Biol Sci |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9667365/ http://www.ncbi.nlm.nih.gov/pubmed/36382520 http://dx.doi.org/10.1098/rspb.2022.1718 |
op_rights |
© 2022 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited. |
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_ |
1766404819944210432 |