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Age and growth of small red scorpionfish, Scorpaena notata (Actinopterygii: Scorpaeniformes: Scorpaenidae), a common discard species from the Portuguese fishery

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dc.contributor.authorNeves, Ana
dc.contributor.authorSequeira, Vera
dc.contributor.authorVieira, Ana Rita
dc.contributor.authorPaiva, Rafaela Barros
dc.contributor.authorGordo, Leonel
dc.date.accessioned2020-01-19T14:30:51Z
dc.date.available2020-01-19T14:30:51Z
dc.date.issued2015
dc.description.abstractBackground. The small red scorpionfish, Scorpaena notata Rafinesque, 1810, appears as a bycatch of Portuguese fisheries. Bycatch species are likely to suffer the same declines as commercial species with which they co-occur but information on those species for Portuguese waters does not exist. In order to increase the knowledge for the Portuguese continental-shelf waters several aspects of the species growth were investigated. Materials and methods. Age and growth of Scorpaena notata from Portuguese continental-shelf waters were studied using 379 otoliths. A subsample of 70 otoliths, covering all length classes, was read by three of the authors to establish a reading and interpretation pattern. The von Bertalanffy growth model was fitted to sex-specific age–length data. The likelihood ratio tests were used to evaluate the significance of differences on growth parameters between sexes and with the parameters estimated in different areas. Results. Females dominated in smaller length classes while males prevailed in larger ones, although overall sex ratio did not deviate from 1 : 1. Females ranged from 10.5 to 18.8 cm total length (TL) and from 1 to 6 years; males ranged from 11.4 to 20.7 cm TL and from 1 to 7 years. The von Bertalanffy growth parameters estimated for the Portuguese shelf waters showed significant differences between sexes and were: L∞ = 18.23 cm TL, k = 0.43yr–1, t0 = –0.99 yr for females and L∞ = 21.17 cm TL, k = 0.28yr–1 and t0 = –1.73 yr for males. The age range found in the Portuguese shelf waters was similar to that found in the Balearic Islands but about half of that found for the Adriatic Sea. Significant differences between growth parameters from the Portuguese coast and those from the Balearic Islands and Adriatic Sea were found. Conclusion. Estimates of L∞ in the presently reported study were the highest but rather consistent with the maximum length given for the species.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3750/AIP2015.45.1.02pt_PT
dc.identifier.issn0137-1592
dc.identifier.urihttp://hdl.handle.net/10451/41038
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subjectbycatchpt_PT
dc.subjectfisheriespt_PT
dc.subjectScorpaenidaept_PT
dc.subjectgrowth modelpt_PT
dc.subjectotolithspt_PT
dc.subjectPortuguese shelfpt_PT
dc.titleAge and growth of small red scorpionfish, Scorpaena notata (Actinopterygii: Scorpaeniformes: Scorpaenidae), a common discard species from the Portuguese fisherypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage20pt_PT
oaire.citation.issue1pt_PT
oaire.citation.startPage13pt_PT
oaire.citation.titleACta Ichthyologica et Piscatoriapt_PT
oaire.citation.volume45pt_PT
person.familyNameNeves
person.familyNameSequeira
person.familyNameVieira
person.familyNamePaiva
person.familyNameGordo
person.givenNameAna
person.givenNameVera
person.givenNameAna Rita
person.givenNameRafaela Barros
person.givenNameLeonel
person.identifier.ciencia-id841A-6F45-B7F9
person.identifier.ciencia-id3515-0C30-9186
person.identifier.ciencia-id5418-2378-F22F
person.identifier.orcid0000-0003-3885-2738
person.identifier.orcid0000-0001-7173-4982
person.identifier.orcid0000-0002-5640-7999
person.identifier.orcid0000-0002-7205-9373
person.identifier.orcid0000-0002-9144-6061
person.identifier.ridB-3611-2012
person.identifier.ridB-1673-2012
person.identifier.ridB-1677-2012
person.identifier.ridB-2828-2012
person.identifier.ridB-3604-2012
person.identifier.scopus-author-id57203312308
person.identifier.scopus-author-id24077692000
person.identifier.scopus-author-id26637827200
person.identifier.scopus-author-id6602175866
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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