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Size selectivity of the Spisula solida dredge in relation to tooth spacing and mesh size

2003Journal article Restricted access
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dc.contributor.authorGaspar, Miguel
dc.contributor.authorMiguel de Sousa Leitão, Francisco
dc.contributor.authorSantos, M. N.
dc.contributor.authorSobral, M.
dc.contributor.authorChícharo, Luís
dc.contributor.authorChicharo, Maria Alexandra Teodosio
dc.contributor.authorMonteiro, C. C.
dc.date.accessioned2013-02-27T14:12:04Z
dc.date.available2013-02-27T14:12:04Z
dc.date.issued2003
dc.date.updated2013-02-19T15:34:42Z
dc.description.abstractA study was undertaken on the northwestern coast of Portugal to evaluate the selectivity effect of both tooth spacing and mesh size on the catch of the white clam (Spisula solida). Two typical clam dredges, equipped with different tooth spacing and mesh size, were towed side by side. Three tooth spacing (20, 40 and 60 mm) and three mesh sizes (35, 40 and 50 mm) were investigated. The dredge selectivity experiments were performed by attaching a cover bag with a 20mm mesh to the gear. Individual hauls were analysed by the SELECT model. The Fryer’s mixed model of between-haul variation was also applied to data. The results showed that the space between teeth does not have an effect on selectivity. Tooth length was directly related to the dredge’s capture efficiency. The only factor that contributed to dredge size selection was mesh size. The 50% retention lengths estimated for mesh sizes 30, 40 and 50mm were 25.68, 26.35 and 31.94 mm, respectively. For all mesh sizes, very narrow selection ranges were observed. The most appropriate mesh size to be enforced within the Portuguese northwestern S. solida fishery should be 40 mm.por
dc.identifier.citationGaspar, M. B.; Leitao, F.; Santos, M. N.; Sobral, M.; Chicharo, L. M. Z.; Chicharo, A.; Monteiro, C. C. Size selectivity of the Spisula solida dredge in relation to tooth spacing and mesh size, Fisheries Research, 60, 2-3, 561-568, 2003.por
dc.identifier.issn0165-7836
dc.identifier.otherAUT: MCH00377;
dc.identifier.urihttp://hdl.handle.net/10400.1/2491
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.subjectSpisula solidapor
dc.subjectSize selectivitypor
dc.subjectDredgepor
dc.subjectEfficiencypor
dc.subjectTooth spacingpor
dc.subjectMesh sizepor
dc.titleSize selectivity of the Spisula solida dredge in relation to tooth spacing and mesh sizepor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage568por
oaire.citation.issue2-3por
oaire.citation.startPage561por
oaire.citation.titleFisheries Researchpor
oaire.citation.volume60por
person.familyNameGaspar
person.familyNameLeitão
person.familyNameChicharo
person.familyNameTeodosio
person.givenNameMiguel
person.givenNameFrancisco
person.givenNameLuis
person.givenNameMaria
person.identifier620214
person.identifier.ciencia-idF719-07AC-E41F
person.identifier.ciencia-id3E1C-DBC2-42D5
person.identifier.ciencia-id6716-EE1C-B995
person.identifier.ciencia-idAF10-647B-65FB
person.identifier.orcid0000-0001-9245-8518
person.identifier.orcid0000-0003-4983-9782
person.identifier.orcid0000-0002-4933-2300
person.identifier.orcid0000-0002-0939-9885
person.identifier.ridF-5398-2011
person.identifier.ridM-3980-2013
person.identifier.ridB-5077-2013
person.identifier.scopus-author-id23501123500
person.identifier.scopus-author-id7003991946
person.identifier.scopus-author-id6602881426
person.identifier.scopus-author-id56196396700
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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relation.isAuthorOfPublicationb39b2d6d-d6f5-4130-a9b9-4e7624d44676
relation.isAuthorOfPublication.latestForDiscoveryb138ce56-d033-450e-98a4-2bcb19f4a34e

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