Assessment of the International Fishery for Shrimp (Pandalus borealis) in Division 3M (Flemish Cap), 1993-2019

This paper describes the developmentof the international shrimp (Pandalus borealis) fishery in NAFO Division 3M. Variousindices show that even though the stock wasin high levels,in 2006 and 2007 the lack of good recruitments in the last thirteenyears and the progressive disappearance of the strong y...

Full description

Bibliographic Details
Author: Casas-Sánchez, José Miguel
Format: article
Status:Published version
Publication Date:2019
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/328785
Online Access:http://hdl.handle.net/10261/328785
Access Level:Open access
Keyword:Pesquerías
Centro Oceanográfico de Vigo
fisheries
discards
catch/effort
length frequency
multispecies fisheries
Stock assessment
id ES_3aa4f028b84fdaa2a79e20d856ca4138
oai_identifier_str oai:digital.csic.es:10261/328785
network_acronym_str ES
network_name_str España
repository_id_str
spelling Assessment of the International Fishery for Shrimp (Pandalus borealis) in Division 3M (Flemish Cap), 1993-2019Casas-Sánchez, José MiguelPesqueríasCentro Oceanográfico de Vigofisheriesdiscardscatch/effortlength frequencymultispecies fisheriesStock assessmentThis paper describes the developmentof the international shrimp (Pandalus borealis) fishery in NAFO Division 3M. Variousindices show that even though the stock wasin high levels,in 2006 and 2007 the lack of good recruitments in the last thirteenyears and the progressive disappearance of the strong year classes 2001 and 2002caused a drastic decline of the stock.Although since2011 a moratorium over shrimp fishery was established,predation by redfish and cod contributed to the decline of shrimp especially after 2007-2008. The increment of large specimens in the cod stock, especially since 2010, increasedthe predation mortalityon redfish, inducing the decrease of the redfish stockand as consequence the decline of the predation mortality on shrimp favouring the increase of shrimp stockin the last years.The last assessment (biannual) for this resource was completed, within Scientific Council during autumn 2017. Scientific Council recommended that the fishing mortality for 2018 and 2019 be set as close to zero as possible. The indices of biomass in the 2019 EU survey increase, confirming recent upward trend. The stock size is now well above Blimand it is from 2018 outside the collapse zone defined by the NAFO PA framework. In 2019 thetotal and female biomass indices were9273 and 8486 t respectively.The abundance at age 2 was similar to the estimated in 2018but although recruitment has been weak in the last decade, the recruitment index (age 2) has been increasing since the lowest observed in 2014.Also in 2019 the year-class corresponding to the 2018cohort (pre-recruits) was stronger than in recent years, but it is unclear how this will impact future dynamics. Scientific Council considers that there is sufficient evidence to allow a small amount of directed fishing on this stock. Considering the uncertainty about the future recruitments and the response of the resource to resumed exploitation, Scientific Council advises that the level exploitationin 2020 should not exceed the 25% of 2009 levels(2 640 days).Evaluación de los Stocks Explotados por las Pesquerías Lejanas Españolas en el Atlántico Norte.EVAPESLE4NONorthwest Atlantic Fisheries Organization (NAFO)202320232019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/328785reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Vigoinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3287852026-05-22T06:33:51Z
dc.title.none.fl_str_mv Assessment of the International Fishery for Shrimp (Pandalus borealis) in Division 3M (Flemish Cap), 1993-2019
title Assessment of the International Fishery for Shrimp (Pandalus borealis) in Division 3M (Flemish Cap), 1993-2019
spellingShingle Assessment of the International Fishery for Shrimp (Pandalus borealis) in Division 3M (Flemish Cap), 1993-2019
Casas-Sánchez, José Miguel
Pesquerías
Centro Oceanográfico de Vigo
fisheries
discards
catch/effort
length frequency
multispecies fisheries
Stock assessment
title_short Assessment of the International Fishery for Shrimp (Pandalus borealis) in Division 3M (Flemish Cap), 1993-2019
title_full Assessment of the International Fishery for Shrimp (Pandalus borealis) in Division 3M (Flemish Cap), 1993-2019
title_fullStr Assessment of the International Fishery for Shrimp (Pandalus borealis) in Division 3M (Flemish Cap), 1993-2019
title_full_unstemmed Assessment of the International Fishery for Shrimp (Pandalus borealis) in Division 3M (Flemish Cap), 1993-2019
title_sort Assessment of the International Fishery for Shrimp (Pandalus borealis) in Division 3M (Flemish Cap), 1993-2019
dc.creator.none.fl_str_mv Casas-Sánchez, José Miguel
author Casas-Sánchez, José Miguel
author_facet Casas-Sánchez, José Miguel
author_role author
dc.contributor.none.fl_str_mv Northwest Atlantic Fisheries Organization (NAFO)
dc.subject.none.fl_str_mv Pesquerías
Centro Oceanográfico de Vigo
fisheries
discards
catch/effort
length frequency
multispecies fisheries
Stock assessment
topic Pesquerías
Centro Oceanográfico de Vigo
fisheries
discards
catch/effort
length frequency
multispecies fisheries
Stock assessment
description This paper describes the developmentof the international shrimp (Pandalus borealis) fishery in NAFO Division 3M. Variousindices show that even though the stock wasin high levels,in 2006 and 2007 the lack of good recruitments in the last thirteenyears and the progressive disappearance of the strong year classes 2001 and 2002caused a drastic decline of the stock.Although since2011 a moratorium over shrimp fishery was established,predation by redfish and cod contributed to the decline of shrimp especially after 2007-2008. The increment of large specimens in the cod stock, especially since 2010, increasedthe predation mortalityon redfish, inducing the decrease of the redfish stockand as consequence the decline of the predation mortality on shrimp favouring the increase of shrimp stockin the last years.The last assessment (biannual) for this resource was completed, within Scientific Council during autumn 2017. Scientific Council recommended that the fishing mortality for 2018 and 2019 be set as close to zero as possible. The indices of biomass in the 2019 EU survey increase, confirming recent upward trend. The stock size is now well above Blimand it is from 2018 outside the collapse zone defined by the NAFO PA framework. In 2019 thetotal and female biomass indices were9273 and 8486 t respectively.The abundance at age 2 was similar to the estimated in 2018but although recruitment has been weak in the last decade, the recruitment index (age 2) has been increasing since the lowest observed in 2014.Also in 2019 the year-class corresponding to the 2018cohort (pre-recruits) was stronger than in recent years, but it is unclear how this will impact future dynamics. Scientific Council considers that there is sufficient evidence to allow a small amount of directed fishing on this stock. Considering the uncertainty about the future recruitments and the response of the resource to resumed exploitation, Scientific Council advises that the level exploitationin 2020 should not exceed the 25% of 2009 levels(2 640 days).
publishDate 2019
dc.date.none.fl_str_mv 2019
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/328785
url http://hdl.handle.net/10261/328785
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Vigo
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869406249458597888
score 15.81155

Similar Items