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Polychaete annelids as live bait in Portugal: harvesting activity in brackish water systems

dc.contributor.authorCabral, Sara
dc.contributor.authorAlves, Ana Sofia
dc.contributor.authorCastro, Nuno
dc.contributor.authorChainho, Paula
dc.contributor.authorSá, Erica
dc.contributor.authorCancela Da Fonseca, Luís
dc.contributor.authorFidalgo e Costa, Pedro
dc.contributor.authorCastro, João
dc.contributor.authorCanning-Clode, João
dc.contributor.authorPombo, Ana
dc.contributor.authorCosta, José Lino
dc.date.accessioned2020-03-19T15:09:00Z
dc.date.available2020-03-19T15:09:00Z
dc.date.issued2019
dc.description.abstractPolychaete annelids are some of the most heavily harvested invertebrates collected in coastal areas and estuaries for their economic value as live fishing bait or as food supplement in aquaculture activities. However, information on bait digging in Portugal is scarce or incomplete. Thus, the present study aimed at investigating the bait digging activity in the four most relevant brackish water systems in Portugal: Ria de Aveiro and Ria Formosa coastal lagoons and Tagus and Sado estuaries. Direct observations were performed in each brackish water system 1 h and a half before and after the diurnal low spring tide (< 0.8 m height), on working days. Additionally, logbooks were delivered to bait diggers and two types of surveys were conducted in every system: one to all the intertidal users and the other only to bait diggers. The estimated daily weighted number of bait diggers varied between 31 in the Tagus estuary and 69 in the Ria Formosa coastal lagoon. Diopatra neapolitana (Delle Chiaje, 1841) was the main target species in Ria de Aveiro (more than 83%), Tagus estuary (more than 60%) and Ria Formosa (more than 90%), while in Sado estuary most of the bait diggers targeted Marphysa sp. (92.6%). The highest and lowest amount of polychaete annelid catches were estimated for Ria de Aveiro coastal lagoon (almost 50 tons per year) and Tagus estuary (11 tons per year), respectively. A total annual bait catch value in these four systems was estimated as €3.84 millions. The most important brackish water systems concerning bait diggers’ number and bait captures were Sado estuary and Ria de Aveiro coastal lagoon where management measures should be considered, although managing polychaete harvesting activity is still difficult due to limited information on harvesting and on direct and indirect impacts on population dynamics.pt_PT
dc.description.sponsorship31-03-05-FEP-0042/PROMAR
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doihttps://doi.org/10.1016/j.ocecoaman.2019.104890pt_PT
dc.identifier.issn0964-5691
dc.identifier.urihttp://hdl.handle.net/10400.1/13618
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationMARE - Marine and Environmental Sciences Centre
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectActivity managementpt_PT
dc.subjectBenthic invertebratespt_PT
dc.subjectCoastal lagoonspt_PT
dc.subjectEstuariespt_PT
dc.subjectIntertidal areapt_PT
dc.titlePolychaete annelids as live bait in Portugal: harvesting activity in brackish water systemspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMARE - Marine and Environmental Sciences Centre
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMAR%2F04292%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FMAR%2F04292%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/IF%2F01606%2F2014%2FCP1230%2FCT0001/PT
oaire.citation.issue1pt_PT
oaire.citation.startPage104890pt_PT
oaire.citation.titleOcean & Coastal Managementpt_PT
oaire.citation.volume181pt_PT
oaire.fundingStream5876
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNamedos Santos Cabral
person.familyNameCancela da Fonseca
person.givenNameSara
person.givenNameLuís
person.identifier.ciencia-idE117-6C9B-D59C
person.identifier.ciencia-idC01F-F68E-2327
person.identifier.orcid0000-0002-7302-4105
person.identifier.orcid0000-0001-6527-0827
person.identifier.ridI-5564-2012
person.identifier.scopus-author-id8640178100
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublicatione88bd4b0-16f4-4deb-a782-862fd2a53641
relation.isAuthorOfPublication.latestForDiscoveryc9e82566-a1ba-49ba-99b0-b26f7a82a039
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