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Nest site selection repeatability of green turtles, Chelonia mydas , and consequences for offspring

2018Journal article Restricted access
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dc.contributor.authorPatrício, Ana Rita
dc.contributor.authorVarela, Miguel R.
dc.contributor.authorBarbosa, Castro
dc.contributor.authorBroderick, Annette C.
dc.contributor.authorAiraud, Maria B.Ferreira
dc.contributor.authorGodley, Brendan John
dc.contributor.authorRegalla, Aissa Said
dc.contributor.authorTilley, Dominic
dc.contributor.authorCatry, Paulo
dc.date.accessioned2018-06-28T15:21:40Z
dc.date.available2018-06-28T15:21:40Z
dc.date.issued2018
dc.description.abstractNest site selection is a critical behaviour, particularly in species with no parental care, as it can greatly impact offspring survival. Marine turtles depend on sandy beaches to nest, where they select from a range of microhabitats that may differently affect hatchling survival and phenotype. Here we describe the degree of nest site selection at one of the largest green turtle rookeries globally, in Guinea-Bissau, West Africa, and how this impacts offspring. In 2013 and 2014 we recorded the spatial distribution of 1559 nests, and monitored 657 females during oviposition, to assess population and individual preferences on nesting site. Overall, females tended to nest close to the vegetation, at a preferred elevation of 4.8e5.0 m, which was above the highest spring tide (4.7 m), enhancing clutch survival. Individuals displayed high repeatability in nesting microhabitat type (open sand, forest border and forest), distance along the beach, distance to the vegetation and elevation, which may result from this behaviour having a genetic basis or from fine-scale nest site philopatry. Hatchlings from cooler nests were larger, potentially dispersing faster and more able to evade predators, while smaller hatchlings, from warmer nests, retained more energetic reserves (residual yolk), which may also be advantageous for initial dispersal, particularly if food is scarce. Thus, individual preferences in nest site selection led to trade-offs in offspring phenotype, but overall, most nesting females selected sites that increased offspring survival, suggesting that nest site selection is an adaptive trait that has been under selection. As under future climate change scenarios females nesting in upper shaded areas should have higher fitness, individual consistency in nesting microhabitat provides opportunity for natural selection to occur.pt_PT
dc.description.sponsorshipMAVA Foundation; Rufford Foundation; Fundação para a Ciência e a Tecnologia - (FCT)pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAnimal Behaviour, 139, 91-102pt_PT
dc.identifier.doi10.1016/j.anbehav.2018.03.006pt_PT
dc.identifier.issn00033472
dc.identifier.urihttp://hdl.handle.net/10400.12/6467
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevier Inc.pt_PT
dc.relationRSG12317-1pt_PT
dc.relationRSG16357-2pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectAdaptationpt_PT
dc.subjectClimate changept_PT
dc.subjectFitnesspt_PT
dc.subjectGreen turtlept_PT
dc.subjectHeritabilitypt_PT
dc.subjectNest site selectionpt_PT
dc.subjectRepeatabilitypt_PT
dc.subjectTrade-offspt_PT
dc.subjectWest Africapt_PT
dc.titleNest site selection repeatability of green turtles, Chelonia mydas , and consequences for offspringpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/PEst-OE%2FBIA%2FUI0329%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMAR%2F04292%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Investigador FCT/IF%2F00502%2F2013%2FCP1186%2FCT0003/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F85017%2F2012/PT
oaire.citation.conferencePlaceUnited Statespt_PT
oaire.citation.endPage102pt_PT
oaire.citation.startPage91pt_PT
oaire.citation.titleAnimal Behaviourpt_PT
oaire.citation.volume139pt_PT
oaire.fundingStream5876
oaire.fundingStream5876
oaire.fundingStreamInvestigador FCT
oaire.fundingStreamSFRH
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
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
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isProjectOfPublication18e15b38-cc2d-44d2-8a39-93ec0b8d172b
relation.isProjectOfPublicationb45075bd-b8ca-49a6-bfec-2030828e7160
relation.isProjectOfPublicatione5516a99-acb0-4335-aa35-cf4c810de077
relation.isProjectOfPublication1ab4f7d1-4487-4ebc-a24e-b9003265e4df
relation.isProjectOfPublication.latestForDiscovery18e15b38-cc2d-44d2-8a39-93ec0b8d172b

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