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Hatchery efficiency as a conservation tool in threatened sea turtle rookeries with high embryonic mortality

2021Journal article Restricted access
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dc.contributor.authorMartins, Samir
dc.contributor.authorFerreira-Veiga, Nádia
dc.contributor.authorRodrigues, Zuleika
dc.contributor.authorQuerido, Adélcio
dc.contributor.authorLoureiro, Nuno de Santos
dc.contributor.authorFreire, Kátia
dc.contributor.authorAbella, Elena
dc.contributor.authorOujo, Carolina
dc.contributor.authorMarco, Adolfo
dc.date.accessioned2021-11-10T16:44:35Z
dc.date.available2021-11-10T16:44:35Z
dc.date.issued2021
dc.description.abstractSea turtles are globally endangered and facing anthropogenic threats. To mitigate the negative impacts on sea turtle populations, different conservation strategies have been developed and implemented. For instance, when an endangered population suffers a high embryonic mortality from predation, human poaching, beach flooding or erosion, the relocation of clutches to safer and controlled areas can lower these threats. However, the use of hatcheries is controversially discussed, with some previous studies reporting negative results such as low hatching success, skewed sex ratio or phenotypic alterations of hatchlings. In this study, we evaluated the efficiency of beach hatcheries compared to in-situ incubation in Cabo Verde using data from six nesting seasons (2013-2018). During this study, several thousand high-risk clutches from loggerhead turtle (Caretta caretta Linnaeus, 1758) were relocated to a hatchery constructed within the Sea Turtle Natural Reserve (STNR, Boa Vista Island). Our findings confirmed that the in-situ nests within the STNR have extremely high egg mortality that is usually over 70%. Mean hatching success of clutches relocated to hatcheries was significantly higher than in-situ clutches with mean values between 70 and 85%. No significant differences were observed in the incubation period, the size and the behavioural response of hatchlings between relocated and in-situ clutches. As long as a sea turtle population is endangered and hatching success is low, clutch relocation programs which are designed to have an impact at the population level, are considered an efficient tool that contributes to its recuperation. Nevertheless, strict recommendations that increase hatching success while maintaining natural hatchling phenotype must be implemented.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.ocecoaman.2021.105807pt_PT
dc.identifier.issn0964-5691
dc.identifier.urihttp://hdl.handle.net/10400.1/17304
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.subjectLoggerhead turtlept_PT
dc.subjectEgg mortalitypt_PT
dc.subjectClutch relocationpt_PT
dc.subjectHatchery managementpt_PT
dc.subjectConservationpt_PT
dc.subjectCabo Verdept_PT
dc.titleHatchery efficiency as a conservation tool in threatened sea turtle rookeries with high embryonic mortalitypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage105807pt_PT
oaire.citation.titleOcean & Coastal Managementpt_PT
oaire.citation.volume212pt_PT
person.familyNameMartins
person.familyNameFigueiredo de Santos Loureiro
person.givenNameSamir
person.givenNameNuno Manuel de
person.identifier.ciencia-idD514-3F01-6DE0
person.identifier.orcid0000-0003-3156-9630
person.identifier.orcid0000-0001-7018-7630
person.identifier.scopus-author-id56423263000
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication0186e5b6-731a-4c48-b611-e03753374928
relation.isAuthorOfPublicationa281c547-4ec4-4512-ba80-350af27857cf
relation.isAuthorOfPublication.latestForDiscoverya281c547-4ec4-4512-ba80-350af27857cf

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