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Type of hormonal treatment administered to induce vitellogenesis in European eel influences biochemical composition of eggs and yolk-sac larvae

2022-01Artigo científico Acesso aberto
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dc.contributor.authorBenini, E.
dc.contributor.authorPolitis, S.N.
dc.contributor.authorNielsen, A.
dc.contributor.authorSørensen, S. R.
dc.contributor.authorTomkiewicz, J.
dc.contributor.authorEngrola, Sofia
dc.date.accessioned2022-02-15T15:01:48Z
dc.date.available2022-02-15T15:01:48Z
dc.date.issued2022-01
dc.description.abstractEgg biochemical composition is among the main factors afecting ofspring quality and survival during the yolk-sac stage, when larvae depend exclusively on yolk nutrients. These nutrients are primarily embedded in the developing oocytes during vitellogenesis. In aquaculture, assisted reproduction procedures may be applied enabling gamete production. For the European eel (Anguilla anguilla), reproductive treatment involves administration of pituitary extracts from carp (CPE) or salmon (SPE) to induce and sustain vitellogenesis. In the present study, we compared the infuence of CPE and SPE treatments on ofspring quality and composition as well as nutrient utilization during the yolk-sac stage. Thus, dry weight, proximal composition (total lipid, total protein), free amino acids, and fatty acids were assessed in eggs and larvae throughout the yolk-sac stage, where body and oil-droplet area were measured to estimate growth rate, oil-droplet utilization, and oildroplet utilization efciency. The results showed that CPE females spawned eggs with higher lipid and free amino acid contents. However, SPE females produced more buoyant eggs with higher fertilization rate as well as larger larvae with more energy reserves (estimated as oil-droplet area). Overall, general patterns of nutrient utilization were detected, such as the amount of total lipid and monounsaturated fatty acids decreasing from the egg stage and throughout the yolk-sac larval stage. On the contrary, essential fatty acids and free amino acids were retained. Notably, towards the end of the yolk-sac stage, the proximal composition and biometry of surviving larvae, from both treatments, were similar.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1007/s10695-021-01042-4pt_PT
dc.identifier.eissn1573-5168
dc.identifier.urihttp://hdl.handle.net/10400.1/17555
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relationAlgarve Centre for Marine Sciences
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectAssisted reproductionpt_PT
dc.subjectPituitary extractpt_PT
dc.subjectEgg and larval qualitypt_PT
dc.subjectFAApt_PT
dc.subjectEFApt_PT
dc.subjectLipidspt_PT
dc.subjectProteinpt_PT
dc.titleType of hormonal treatment administered to induce vitellogenesis in European eel influences biochemical composition of eggs and yolk-sac larvaept_PT
dc.title.alternativeTipo de tratamento hormonal administrado para induzir vitellogênese na enguia europeia influencia a composição bioquímica de ovos e larvas de gema-sacpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.citation.titleFish Physiology and Biochemistrypt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameEngrola
person.givenNameSofia
person.identifier237846
person.identifier.ciencia-idA610-29E7-9B83
person.identifier.orcid0000-0002-5244-5541
person.identifier.ridA-2485-2012
person.identifier.scopus-author-id8669620600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication51be5a20-df9c-4a90-85eb-51d779642caa
relation.isAuthorOfPublication.latestForDiscovery51be5a20-df9c-4a90-85eb-51d779642caa
relation.isProjectOfPublicationfafa76a6-2cd2-4a6d-a3c9-772f34d3b91f
relation.isProjectOfPublication.latestForDiscoveryfafa76a6-2cd2-4a6d-a3c9-772f34d3b91f

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