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Age and growth of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae) in southern Brazil

2018Journal article Open access
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dc.contributor.authorCarmo, Wanessa P. D.
dc.contributor.authorFavaro, Luis Fernando
dc.contributor.authorCoelho, Rui
dc.date.accessioned2018-12-07T14:58:20Z
dc.date.available2018-12-07T14:58:20Z
dc.date.issued2018
dc.description.abstractAge and growth studies are fundamental to successful fisheries management. Zapteryx brevirostris (Muller & Henle, 1841) is distributed off the Brazilian continental shelf and this species is assessed as "Vulnerable" in the Red List of the International Union for the Conservation of Nature (IUCN). Thus, the objective of this study was to present previously unknown information about the age and growth of Z. brevirostris that can be used for its management, conservation, and fisheries. A total of 162 specimens were sampled, with total lengths (TL) varying between 35.7 cm and 56 cm. The vertebrae were embedded in resin, sectioned in cuts with 0.5 mm thickness and the growth bands of the vertebrae were read under a light microscope. In the studied area, Z. brevirostris ages were estimated from 4 to 10 years according to vertebrae patterns. The species reaches its maximum asymptotic size (Linf) around 56 cm (56 cm for females and 50.37 cm for males). This is the first estimate of age and growth for a species of the Zapteryx genus, and the results support the hypothesis that this ray requires future management conservation, particularly due to its slow growth rate and consequent susceptibility to overexploitation.
dc.description.sponsorshipCoordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES); Portuguese Foundation for Science and Technology (FCT, Fundacao para a Ciencia e Tecnologia) [IF/00253/2014]
dc.identifier.doi10.1590/1982-0224-20170005
dc.identifier.issn1679-6225
dc.identifier.urihttp://hdl.handle.net/10400.1/11971
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSoc Brasileira Ictiologia
dc.subjectWestern North-Atlantic
dc.subjectShark prionace-glauca
dc.subjectCarcharhinus-plumbeus
dc.subjectSandbar shark
dc.subjectChondrichthyan fshes
dc.subjectReproductive-biology
dc.subjectScalloped hammerhead
dc.subjectSphyrna-lewini
dc.subjectIskenderun bay
dc.subjectRaja-undulata
dc.titleAge and growth of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae) in southern Brazil
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue1
oaire.citation.startPagee170005
oaire.citation.titleNeotropical Ichthyology
oaire.citation.volume16
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.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublication6366aa1b-1301-43a3-b2b0-1280311ac95f
relation.isAuthorOfPublication.latestForDiscovery6366aa1b-1301-43a3-b2b0-1280311ac95f

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