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Characterization of spawning rhythms of a sparidae aquaculture species, the white seabream (Diplodus sargus), in the south of Portugal

2021Journal article Restricted access
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dc.contributor.authorSantos, Cátia
dc.contributor.authorSoares, Florbela
dc.contributor.authorCandeias-Mendes, Ana
dc.contributor.authorPousão‐Ferreira, Pedro
dc.contributor.authorDinis, Maria Teresa
dc.contributor.authorOliveira, Catarina
dc.date.accessioned2022-02-18T14:42:51Z
dc.date.available2022-11-01T01:30:15Z
dc.date.issued2021
dc.description.abstractOne of the most visible features of fish reproduction is seasonality; however, daily rhythmicity is present in most species and should not be disregarded. This study investigated the seasonal and daily spawning rhythms of the white seabream (Diplodus sargus) in captivity, and a possible endogenous control of the daily rhythm. Spawns were monitored daily, during an entire reproductive season by using an automatic and programmable egg collector. The spawning season lasted 5 months, from January until June, when temperatures oscillated between 11.5 and 24.4 degrees C. Female fecundity was higher between 17.5 and 20.4 degrees C, suggesting a temperature influence in spawning. This species showed a very clear daily spawning rhythm (Cosinor analysis, p < 0.001), strongly related with photoperiod. Eggs started to be released at sunset and peaked around 21:00 h. Egg quality parameters also changed along the spawning period, with viability and hatching rates, increasing towards the end of the night period. The spawning rhythm persisted (Cosinor analysis, p < 0.001) for 5 days under constant light conditions, suggesting the presence of an endogenous clock mechanism which controlled this circadian pattern. The present results represent an advantage for the optimization of egg production protocols in this species, and an added value to the current knowledge of marine fish physiology.pt_PT
dc.description.sponsorshipFP7/SME/2008/1; 16-02-01-FMP-0066;
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1111/are.15675pt_PT
dc.identifier.issn1355-557X
dc.identifier.urihttp://hdl.handle.net/10400.1/17570
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.relationMetodologias e técnicas de avaliação das normas europeias de acessibilidade em procedimentos de compras públicas de produtos e serviços de TIC
dc.relationAlgarve Centre for Marine Sciences
dc.subjectAnnual rhythmpt_PT
dc.subjectDaily and circadian rhythmspt_PT
dc.subjectPhotoperiodpt_PT
dc.subjectTemperaturept_PT
dc.subjectWhite seabreampt_PT
dc.titleCharacterization of spawning rhythms of a sparidae aquaculture species, the white seabream (Diplodus sargus), in the south of Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMetodologias e técnicas de avaliação das normas europeias de acessibilidade em procedimentos de compras públicas de produtos e serviços de TIC
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F119501%2F2016/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.citation.titleAquaculture Researchpt_PT
oaire.fundingStreamPOR_NORTE
oaire.fundingStream6817 - DCRRNI ID
person.familyNameCandeias-Mendes
person.familyNameDinis
person.familyNameOliveira
person.givenNameAna
person.givenNameMaria Teresa
person.givenNameCatarina
person.identifier.ciencia-id3C18-B98C-D2D9
person.identifier.ciencia-id5414-4ACF-BF90
person.identifier.ciencia-id0816-30C5-51AC
person.identifier.orcid0000-0003-3933-5417
person.identifier.orcid0000-0001-7813-1324
person.identifier.orcid0000-0002-6679-761X
person.identifier.scopus-author-id7004150905
person.identifier.scopus-author-id35433190500
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
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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