Selectivity of flexible size-sorting grid in Mediterranean multispecies trawl fishery

10 pages, 5 figures, 3 tables

Detalles Bibliográficos
Autores: Bahamon, Nixon, Sardà, Francisco, Suuronen, Petri
Tipo de recurso: artículo
Fecha de publicación:2007
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/20214
Acceso en línea:http://hdl.handle.net/10261/20214
Access Level:acceso abierto
Palabra clave:Cod end selectivity
European hake
Forkbeard
Multispecies trawl fishery
Norway lobster
Poor cod
Sorting grid
Square mesh
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spelling Selectivity of flexible size-sorting grid in Mediterranean multispecies trawl fisheryBahamon, NixonSardà, FranciscoSuuronen, PetriCod end selectivityEuropean hakeForkbeardMultispecies trawl fisheryNorway lobsterPoor codSorting gridSquare mesh10 pages, 5 figures, 3 tablesThe demersal multispecies trawl fishery in the western Mediterranean Sea has a poor selectivity; large numbers of juvenile fish are caught when using the legislated 40-mm diamond mesh cod end. The selectivity of a flexible sorting grid with 20-mm bar spacing (BS20) installed in front the conventional trawl cod end was investigated. The standard covered cod end method was used. Data was adequate for analyzing the selectivity of European hake Merluccius merluccius, poor cod Trisopterus minutus, greater forkbeard Phycis blennoides and Norway lobster Nephrops norvegicus. The selectivity of the 20-mm sorting grid was compared with the performance of 40-mm diamond (DM40) and square mesh (SM40) cod ends. The effect of a guiding funnel on the performance of the grid (BS20-f) was also explored. Finally, the potential changes in yield per recruit (Y/R) and biomass per recruit (B/R) after implementing a sorting grid were explored. An overall improvement in the 50% selection length (L50) with all four species was substantial when comparing the BS20 to the DM40. Higher improvement in L50s was achieved when the grid was equipped with the guiding funnel. When comparing the performance of the BS20-f to the SM40, there was no marked difference in L50s. The Y/R and B/R, however, are substantially higher with BS20-f for poor cod and about the same for European hake. BS20 compared to SM40 achieved lower Y/R and B/R for all four species; the smallest difference was observed for Norway lobster. Further development is required if the sorting grid is to be introduced into commercial fisheries.The sorting grid was constructed with the help of IFREMER (Lorient, France). This study was financially supported by the European Commission, Contract SSP8-CT-2003/501605 (NECESSITY).Peer reviewedBlackwell Publishing201020102007info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_650122195 bytesapplication/pdfhttp://hdl.handle.net/10261/20214reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1111/j.1444-2906.2007.01460.xinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/202142026-05-22T06:33:51Z
dc.title.none.fl_str_mv Selectivity of flexible size-sorting grid in Mediterranean multispecies trawl fishery
title Selectivity of flexible size-sorting grid in Mediterranean multispecies trawl fishery
spellingShingle Selectivity of flexible size-sorting grid in Mediterranean multispecies trawl fishery
Bahamon, Nixon
Cod end selectivity
European hake
Forkbeard
Multispecies trawl fishery
Norway lobster
Poor cod
Sorting grid
Square mesh
title_short Selectivity of flexible size-sorting grid in Mediterranean multispecies trawl fishery
title_full Selectivity of flexible size-sorting grid in Mediterranean multispecies trawl fishery
title_fullStr Selectivity of flexible size-sorting grid in Mediterranean multispecies trawl fishery
title_full_unstemmed Selectivity of flexible size-sorting grid in Mediterranean multispecies trawl fishery
title_sort Selectivity of flexible size-sorting grid in Mediterranean multispecies trawl fishery
dc.creator.none.fl_str_mv Bahamon, Nixon
Sardà, Francisco
Suuronen, Petri
author Bahamon, Nixon
author_facet Bahamon, Nixon
Sardà, Francisco
Suuronen, Petri
author_role author
author2 Sardà, Francisco
Suuronen, Petri
author2_role author
author
dc.subject.none.fl_str_mv Cod end selectivity
European hake
Forkbeard
Multispecies trawl fishery
Norway lobster
Poor cod
Sorting grid
Square mesh
topic Cod end selectivity
European hake
Forkbeard
Multispecies trawl fishery
Norway lobster
Poor cod
Sorting grid
Square mesh
description 10 pages, 5 figures, 3 tables
publishDate 2007
dc.date.none.fl_str_mv 2007
2010
2010
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/20214
url http://hdl.handle.net/10261/20214
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1111/j.1444-2906.2007.01460.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 22195 bytes
application/pdf
dc.publisher.none.fl_str_mv Blackwell Publishing
publisher.none.fl_str_mv Blackwell Publishing
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_ 1869404384055525376
score 15,198674

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