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New observations on the bluefin tuna trap fishery off southern Portugal (NE Atlantic) between 1998-2014: trends on potential catches, catch-at-size and sex ratios

2016Working paper Open Access
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dc.contributor.authorSantos, Miguel
dc.contributor.authorRosa, Daniela
dc.contributor.authorCoelho, Rui
dc.contributor.authorLino, Pedro
dc.date.accessioned2020-12-04T11:03:09Z
dc.date.available2020-12-04T11:03:09Z
dc.date.issued2016
dc.description.abstractThis paper updates information previously presented on the bluefin tuna catches from a tuna trap fishery operating off the southern coast of Portugal (Algarve). Trends of intra- and interannual catches were analysed and relationships between the potential catches and ICCAT management regulations for the Mediterranean Sea explored. The catch rates of bluefin tuna in the tuna trap off the Algarve remained relatively low between 1998 and 2008, but were followed by increasingly high catches thereafter, with an observed peak during the 2011 season. Significant negative correlations were observed between the catches and the number of allowable fishing months for purse-seines, longlines and bait boats in the Mediterranean Sea, meaning that the catch increased as the number of allowable fishing months for those fishing gears decreased. On the other hand, a positive relationship was observed between the catches and the minimum landing size (MLS), meaning that the catch rates in the tuna trap increased as the MLS for bluefin tuna also increased. These results seem to corroborate other fisheries indicators regarding the recovery of the Eastern Atlantic and Mediterranean Sea stock.pt_PT
dc.description.sponsorshipFCT IF/00253/2014pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSantos, M.N., Rosa, D., Coelho, R., Lino, P.G. 2016. New observations on the bluefin tuna trap fishery off southern Portugal (NE Atlantic) between 1998-2014: trends on potential catches, catch-at-size and sex ratios. Bluefin tuna data preparatory meeting, 2-6 March 2015, Madrid, Spain. Collect. Vol. Sci. Pap. ICCAT, 72 (5): 1350-1364.pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.1/14881
dc.language.isoengpt_PT
dc.peerreviewednopt_PT
dc.publisherICCAT - International Commission for the Conservation of Atlantic Tunas ispt_PT
dc.relation.publisherversionhttps://www.iccat.int/Documents/CVSP/CV072_2016/n_5/CV072051350.pdfpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.titleNew observations on the bluefin tuna trap fishery off southern Portugal (NE Atlantic) between 1998-2014: trends on potential catches, catch-at-size and sex ratiospt_PT
dc.typeworking paper
dspace.entity.typePublication
oaire.citation.endPage1364pt_PT
oaire.citation.issue5pt_PT
oaire.citation.startPage1350pt_PT
oaire.citation.volume72pt_PT
person.familyNameCoelho
person.givenNameRui
person.identifier134638
person.identifier.ciencia-idDC1A-20B7-EAC0
person.identifier.orcid0000-0003-3813-5157
person.identifier.ridC-1163-2008
person.identifier.scopus-author-id56257111100
rcaap.rightsopenAccesspt_PT
rcaap.typeworkingPaperpt_PT
relation.isAuthorOfPublication6366aa1b-1301-43a3-b2b0-1280311ac95f
relation.isAuthorOfPublication.latestForDiscovery6366aa1b-1301-43a3-b2b0-1280311ac95f

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