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First assessment of the thryssa vitrirostris (Engraulidae) beach seine fishery in northeastern mozambique

2018-10-15Artigo científico Acesso aberto
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datacite.subject.sdg14:Proteger a Vida Marinha
datacite.subject.sdg02:Erradicar a Fome
datacite.subject.sdg12:Produção e Consumo Sustentáveis
dc.contributor.authorManuessa, Bonifácio
dc.contributor.authorMorais, Eurico
dc.contributor.authorBorges, Teresa Cerveira
dc.contributor.authorTeodosio, Maria
dc.contributor.authorLeitão, Francisco
dc.date.accessioned2026-02-27T13:31:28Z
dc.date.available2026-02-27T13:31:28Z
dc.date.issued2018-10-15
dc.description.abstractMonthly length-frequency data, from 2009 to 2014, was used to estimate the growth parameters, mortality, and spawning season, and to assess the exploitation status of Thryssa vitrirostris (Engraulidae) fisheries in Pebane. The von Bertalanffy asymptotic length (L∞) and growth rate (K) were 25.1 cm (standard length) and 0.41 per year (standard length), respectively. Two proxy recruitment peaks were found: the first peak of recruitment occurs from April to July, and the second recruitment peak from September to October. The total estimated mortality rates (Z), natural mortality (M), and fishing mortality (F) were Z = 1.31, M = 0.92, and F = 0.39. For the beach seine gear, the size at first catch of T. vitrirostris was Lc25 = 4.43 cm. The 50% retention size of the catch was Lc50 = 5.39 cm. The retention probability analyses revealed a large rate of juvenile fishing mortality (54.2%). The estimated exploitation rate (0.30) was below the maximum exploitation rate (0.48), and above the optimal sustainable exploitation rate (E50 = 0.28), evidencing a sustainable fishery. However, under such an exploitation regime, it is advised that a continuously monitoring-survey of T. vitrirostris is maintained. An increase in migration of fishermen has been recently recorded in Pebane, due to its rich fisheries, which can increase the fishing effort and the risk of overexploitation if management measures (such as mesh size increase) are not taken in advance.eng
dc.identifier.doi10.3390/j1010012
dc.identifier.issn2571-8800
dc.identifier.urihttp://hdl.handle.net/10400.1/28285
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relationAssess the impacts of climate change on key fisheries and species in Portugal
dc.relationCentre of Marine Sciences
dc.relation.ispartofJ
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectBeach seine
dc.subjectGrowth parameters
dc.subjectYield-per-recruitment
dc.subjectBiomass-per-recruitment
dc.subjectFishing mortality
dc.subjectRecruitment trends
dc.titleFirst assessment of the thryssa vitrirostris (Engraulidae) beach seine fishery in northeastern mozambiqueeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberSFRH/BPD/108949/2015
oaire.awardNumberUID/Multi/04326/2013
oaire.awardTitleAssess the impacts of climate change on key fisheries and species in Portugal
oaire.awardTitleCentre of Marine Sciences
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F108949%2F2015/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FMulti%2F04326%2F2013/PT
oaire.citation.issue1
oaire.citation.startPage12
oaire.citation.titleMultidisciplinary scientific journal
oaire.citation.volume1
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameManuessa
person.familyNameBorges
person.familyNameTeodosio
person.familyNameLeitão
person.givenNameBonifácio
person.givenNameTeresa Cerveira
person.givenNameMaria
person.givenNameFrancisco
person.identifier620214
person.identifier.ciencia-id5818-B0EF-0A40
person.identifier.ciencia-id5A1E-E8AD-3E24
person.identifier.ciencia-idAF10-647B-65FB
person.identifier.ciencia-id3E1C-DBC2-42D5
person.identifier.orcid0000-0002-6414-0083
person.identifier.orcid0000-0002-0939-9885
person.identifier.orcid0000-0003-4983-9782
person.identifier.ridM-3388-2013
person.identifier.ridB-5077-2013
person.identifier.ridM-3980-2013
person.identifier.scopus-author-id6604001208
person.identifier.scopus-author-id56196396700
person.identifier.scopus-author-id7003991946
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
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