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Revealing the role of crab as bait in octopus fishery: an ecological and fishing approach to support management decisions

2023Journal article Open access
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dc.contributor.authorLeitão, Francisco
dc.contributor.authorMonteiro, J. N.
dc.contributor.authorCabral, Pedro
dc.contributor.authorTeodosio, Maria
dc.contributor.authorRoa-Ureta, Ruben H.
dc.date.accessioned2024-01-03T11:46:35Z
dc.date.available2024-01-03T11:46:35Z
dc.date.issued2023
dc.description.abstractIn southern Portugal, artisanal octopus fisheries play an important socioeconomic role. Live crab bait in traps was used up to 2010 and banned in 2012. Such regulation, based on co-management advice, was not established under a scientific fundament. As a result, a long-standing controversy ensued with some fishing associations claiming that live crab bait increased fishing effort and exploitation rates and therefore risked the octopus stock status, while other fishers denied all these alleged impacts. The issue has not been resolved so far due to lack of scientific studies. In this study, we resolve the controversy conducting experimental fishing to determine bycatch and octopus catch rates using live crab bait versus other types of baits based on fish and assess the stock status of octopus over-time with constant parameters (hypothesis of no effect of the use of live crab bait) versus time-varying parameters (hypothesis of raised exploitation rates and riskier stock status). Bycatch was very low regardless of bait type. Our experimental fishing trials showed that fish-based baits increase bycatch and octopus catch rates. Stock assessment models showed that exploitation rates and stock status do not worsen in years of use of crab bait. We conclude that the use of crab bait in octopus fishery does not lead to increased exploitation rate or risks for stock sustainability status. Other considerations involving fishing costs and fishing operations further highlight the advantages of lifting the ban on the use of live crab bait in the Algarve octopus fishery.pt_PT
dc.description.sponsorshipMAR-01.04.02-FEAMP-0005 CRUSTAPA-NHApt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.marpol.2023.105878pt_PT
dc.identifier.issn0308-597X
dc.identifier.urihttp://hdl.handle.net/10400.1/20256
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationAlgarve Centre for Marine Sciences
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.relationNot Available
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectAlgarvept_PT
dc.subjectArtisanal fisheriespt_PT
dc.subjectEnvironmental impactpt_PT
dc.subjectFisheries climate smart approachpt_PT
dc.subjectStock assessmentpt_PT
dc.titleRevealing the role of crab as bait in octopus fishery: an ecological and fishing approach to support management decisionspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardTitleNot Available
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/DL 57%2F2016/DL 57%2F2016%2FCP1361%2FCT0008/PT
oaire.citation.startPage105878pt_PT
oaire.citation.titleMarine Policypt_PT
oaire.citation.volume158pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamDL 57/2016
person.familyNameLeitão
person.familyNameMonteiro
person.familyNameTeodosio
person.givenNameFrancisco
person.givenNameJoão Nuno
person.givenNameMaria
person.identifier620214
person.identifier.ciencia-id3E1C-DBC2-42D5
person.identifier.ciencia-id2F11-D45B-0FE9
person.identifier.ciencia-idAF10-647B-65FB
person.identifier.orcid0000-0003-4983-9782
person.identifier.orcid0000-0003-1328-7592
person.identifier.orcid0000-0002-0939-9885
person.identifier.ridM-3980-2013
person.identifier.ridB-5077-2013
person.identifier.scopus-author-id7003991946
person.identifier.scopus-author-id56196396700
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.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
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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