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By-catch species susceptibilities and potential for survival in Algarve (southern Portugal) deep-water crustacean trawl fishery

2018Journal article Open Access
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dc.contributor.authorAdão, Ana Catarina
dc.contributor.authorBreen, Michael
dc.contributor.authorEichert, Moritz
dc.contributor.authorBorges, Teresa C.
dc.date.accessioned2019-03-12T15:48:08Z
dc.date.available2019-03-12T15:48:08Z
dc.date.issued2018
dc.description.abstractBottom trawling for crustaceans in Portuguese coastal waters is an important fishery in terms of revenue, despite its negative impacts on deep-sea ecosystems. This fishery catches large amounts of unwanted species that were discarded for various reasons before the introduction of the Landing Obligation, which banned the discarding of regulated species. However, where it can be demonstrated that a species has an acceptably high likelihood of survival, exemptions to this ban may be granted. In this study, time-to-mortality was used to estimate immediate mortality rates and identify important biological characteristics determining the susceptibility of 14 by-catch species. most with commercial interest (Conger conger, Galeus melastomus, Helicolenus dactylopterus, Lepidorhombus boscii, Lophius budegassa, Lophius piscatorius, Merluccius merluccius. Micromesistius poutassou, Mullus surmuletus, Phycis blennoides. Scyliorhinus canicula, Trigla lyra. Trachurus trachurus and Trachurus piciuratus). Species with potential to survive after the discarding process were identified and a short-term survival assessment of conger eel (Conger conger) was performed. The results suggest that species with scales, gas bladder and high metabolic rates have higher post-discard mortality. Size was a critical factor determining survival in some species, with smaller individuals dying faster. The short-term survival rate of conger eel was determined to be 84% (95% Cl: 75.5 to 93.3%). The methodology and results from this study can help identify species that may survive the discarding process and factors influencing their survival.pt_PT
dc.description.sponsorshipMINOUW project - Horizon 2020 Framework Programme of the European Union - 634495pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3989/scimar.04740.02Apt_PT
dc.identifier.issn0214-8358
dc.identifier.urihttp://hdl.handle.net/10400.1/12411
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherConsejo Superior de Investigaciones Científicaspt_PT
dc.relationScience, Technology, and Society Initiative to minimize Unwanted Catches in European Fisheries
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBy-catchpt_PT
dc.subjectDiscardspt_PT
dc.subjectLime-to-mortalitypt_PT
dc.subjectBiological traitspt_PT
dc.subjectSurvivalpt_PT
dc.subjectTrawlingpt_PT
dc.subjectSouthern Portugalpt_PT
dc.titleBy-catch species susceptibilities and potential for survival in Algarve (southern Portugal) deep-water crustacean trawl fisherypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleScience, Technology, and Society Initiative to minimize Unwanted Catches in European Fisheries
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/634495/EU
oaire.citation.issueS1pt_PT
oaire.citation.startPage141pt_PT
oaire.citation.titleScientia Marinapt_PT
oaire.citation.volume82pt_PT
oaire.fundingStreamH2020
person.familyNameAdão
person.familyNameBreen
person.familyNameEichert
person.familyNameBorges
person.givenNameAna Catarina
person.givenNameMichael
person.givenNameMoritz
person.givenNameTeresa Cerveira
person.identifier.ciencia-id5A1E-E8AD-3E24
person.identifier.orcid0000-0002-7662-2143
person.identifier.orcid0000-0002-1082-1043
person.identifier.orcid0000-0003-3565-1762
person.identifier.orcid0000-0002-6414-0083
person.identifier.ridM-3388-2013
person.identifier.scopus-author-id6604001208
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication5b45424f-9314-4921-b73e-85766adbfe59
relation.isAuthorOfPublication8c2c4bdb-c079-4799-97f3-a34833313597
relation.isAuthorOfPublicationb7d9269b-4abe-485e-b7ca-644bdc203f3e
relation.isAuthorOfPublication7975c9b8-d25a-4bec-91f4-d1193a8e8082
relation.isAuthorOfPublication.latestForDiscovery7975c9b8-d25a-4bec-91f4-d1193a8e8082
relation.isProjectOfPublication349e8db1-e535-40e2-b826-c42f3e4b5559
relation.isProjectOfPublication.latestForDiscovery349e8db1-e535-40e2-b826-c42f3e4b5559

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