A two-stage biomass model to assess the English Channel cuttlefish (Sepia officinalis L.) stock
The English Channel cuttlefish (Sepia officinalis) is the most abundant cephalopod resource in the Northeast Atlantic and one of the three most valuable resources for English Channel fishers. Depletion methods and age-structured models have been used to assess the stock, though they have shown limit...
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2014
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Online Access: | https://archimer.ifremer.fr/doc/00248/35923/34448.pdf https://doi.org/10.1093/icesjms/fsu081 https://archimer.ifremer.fr/doc/00248/35923/ |
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ftarchimer:oai:archimer.ifremer.fr:35923 2023-05-15T17:41:27+02:00 A two-stage biomass model to assess the English Channel cuttlefish (Sepia officinalis L.) stock Gras, Michael Roel, Beatriz A. Coppin, Franck Foucher, Eric Robin, Jean-paul 2014-11 application/pdf https://archimer.ifremer.fr/doc/00248/35923/34448.pdf https://doi.org/10.1093/icesjms/fsu081 https://archimer.ifremer.fr/doc/00248/35923/ eng eng Oxford university press https://archimer.ifremer.fr/doc/00248/35923/34448.pdf doi:10.1093/icesjms/fsu081 https://archimer.ifremer.fr/doc/00248/35923/ International Council for the Exploration of the Sea 2014. All rights reserved. For Permissions, please email: journals.permissions@oup.com info:eu-repo/semantics/openAccess restricted use ICES Journal of Marine Science (1054-3139) (Oxford university press), 2014-11 , Vol. 71 , N. 9 , P. 2457-2468 abundance indices English Channel exploitation rate Sepia officinalis SST stock–recruitment relationship trawl survey two-stage biomass model text Publication info:eu-repo/semantics/article 2014 ftarchimer https://doi.org/10.1093/icesjms/fsu081 2021-09-23T20:25:44Z The English Channel cuttlefish (Sepia officinalis) is the most abundant cephalopod resource in the Northeast Atlantic and one of the three most valuable resources for English Channel fishers. Depletion methods and age-structured models have been used to assess the stock, though they have shown limitations related to the model assumptions and data demand. A two-stage biomass model is, therefore, proposed here using, as input data, four abundance indices derived from survey and commercial trawl data collected by Ifremer and Cefas. The model suggests great interannual variability in abundance during the 17 years of the period considered and a decreasing trend in recent years. Model results suggest that recruitment strength is independent of spawning-stock biomass, but appears to be influenced by environmental conditions such as sea surface temperature at the start of the life cycle. Trends in exploitation rate do not reveal evidence of overexploitation. Reference points are proposed and suggestions for management of the sustainable utilization of cuttlefish in the English Channel are advanced. Article in Journal/Newspaper Northeast Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) ICES Journal of Marine Science 71 9 2457 2468 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
abundance indices English Channel exploitation rate Sepia officinalis SST stock–recruitment relationship trawl survey two-stage biomass model |
spellingShingle |
abundance indices English Channel exploitation rate Sepia officinalis SST stock–recruitment relationship trawl survey two-stage biomass model Gras, Michael Roel, Beatriz A. Coppin, Franck Foucher, Eric Robin, Jean-paul A two-stage biomass model to assess the English Channel cuttlefish (Sepia officinalis L.) stock |
topic_facet |
abundance indices English Channel exploitation rate Sepia officinalis SST stock–recruitment relationship trawl survey two-stage biomass model |
description |
The English Channel cuttlefish (Sepia officinalis) is the most abundant cephalopod resource in the Northeast Atlantic and one of the three most valuable resources for English Channel fishers. Depletion methods and age-structured models have been used to assess the stock, though they have shown limitations related to the model assumptions and data demand. A two-stage biomass model is, therefore, proposed here using, as input data, four abundance indices derived from survey and commercial trawl data collected by Ifremer and Cefas. The model suggests great interannual variability in abundance during the 17 years of the period considered and a decreasing trend in recent years. Model results suggest that recruitment strength is independent of spawning-stock biomass, but appears to be influenced by environmental conditions such as sea surface temperature at the start of the life cycle. Trends in exploitation rate do not reveal evidence of overexploitation. Reference points are proposed and suggestions for management of the sustainable utilization of cuttlefish in the English Channel are advanced. |
format |
Article in Journal/Newspaper |
author |
Gras, Michael Roel, Beatriz A. Coppin, Franck Foucher, Eric Robin, Jean-paul |
author_facet |
Gras, Michael Roel, Beatriz A. Coppin, Franck Foucher, Eric Robin, Jean-paul |
author_sort |
Gras, Michael |
title |
A two-stage biomass model to assess the English Channel cuttlefish (Sepia officinalis L.) stock |
title_short |
A two-stage biomass model to assess the English Channel cuttlefish (Sepia officinalis L.) stock |
title_full |
A two-stage biomass model to assess the English Channel cuttlefish (Sepia officinalis L.) stock |
title_fullStr |
A two-stage biomass model to assess the English Channel cuttlefish (Sepia officinalis L.) stock |
title_full_unstemmed |
A two-stage biomass model to assess the English Channel cuttlefish (Sepia officinalis L.) stock |
title_sort |
two-stage biomass model to assess the english channel cuttlefish (sepia officinalis l.) stock |
publisher |
Oxford university press |
publishDate |
2014 |
url |
https://archimer.ifremer.fr/doc/00248/35923/34448.pdf https://doi.org/10.1093/icesjms/fsu081 https://archimer.ifremer.fr/doc/00248/35923/ |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
ICES Journal of Marine Science (1054-3139) (Oxford university press), 2014-11 , Vol. 71 , N. 9 , P. 2457-2468 |
op_relation |
https://archimer.ifremer.fr/doc/00248/35923/34448.pdf doi:10.1093/icesjms/fsu081 https://archimer.ifremer.fr/doc/00248/35923/ |
op_rights |
International Council for the Exploration of the Sea 2014. All rights reserved. For Permissions, please email: journals.permissions@oup.com info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1093/icesjms/fsu081 |
container_title |
ICES Journal of Marine Science |
container_volume |
71 |
container_issue |
9 |
container_start_page |
2457 |
op_container_end_page |
2468 |
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1766143019039326208 |