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Ghost crab predation of loggerhead turtle eggs across thermal habitats

2022Journal article Open access
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dc.contributor.authorMartins, Rita
dc.contributor.authorMarco, Adolfo
dc.contributor.authorPatino-Martinez, Juan
dc.contributor.authorYeoman, Kate
dc.contributor.authorVinagre, Catarina
dc.contributor.authorPatrício, Ana Rita
dc.date.accessioned2022-05-26T18:41:43Z
dc.date.available2022-05-26T18:41:43Z
dc.date.issued2022
dc.description.abstractThe reproductive success of sea turtles is highly influenced by the environmental and biological conditions of the nesting beach. Maio Island, Cabo Verde, one of the main nesting sites for the Northeast Atlantic loggerhead subpopulation, displays marked heterogeneity of sand coloration, with dark, mixed and light sandy beaches, resulting in different thermal habitats. Considering that sand temperature can influence both sea turtle embryo development and predatory activity by ghost crabs – the main predators of clutches and hatchlings at Cabo Verde – we surveyed loggerhead nesting beaches at Maio Island, with three sand colorations (‘beach type’), to assess: 1) the density and size of ghost crab burrows, as a proxy for ghost crab density and size, and 2) ghost crab predation on 70 loggerhead nests. We further assessed nest site selection, by considering the number of nesting activities and clutches laid across beach type. There were no evident trends in the distributions of ghost crab density and size between years or beach type. We found that ghost crab predation is a major source of mortality in Maio Island, affecting 67.8% (n = 59) of the nests. Ghost crab predation was variable between beaches, but generally, at the warmer dark sand beaches, clutch mortality was mostly caused by ghost crab predation (53.2%, n = 17), while at the mixed sand beaches mortality by predation was low (7.5%, n = 18), compared to mortality due to other causes (49.9%), indicating that other factors can also significantly impact clutch survival. The mixed sand beaches had more nesting activities and higher nest density (2.29/m2; 1.25/m2, respectively), compared to the light sand (0.72/m2; 0.35/m2) and the dark sand beaches (0.73/m2; 0.27/m2), suggesting a possible predation-free nesting preference. Our findings show that some beaches are in need of nest protection, thus we recommend both in situ nest protection and egg translocation to safe hatcheries, depending on the threats identified, to enhance clutch survival at such heterogeneous nesting areas as Maio Island.pt_PT
dc.description.sponsorshipFundação para a Ciência e Tecnologia - FCTpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMartins, R., Marco, A., Patino-Martinez, J., Yeoman, K., Vinagre, C., & Patrício, A. R. (2022). Ghost crab predation of loggerhead turtle eggs across thermal habitats. Journal of Experimental Marine Biology and Ecology, 551. https://doi.org/10.1016/j.jembe.2022.151735pt_PT
dc.identifier.doi10.1016/j.jembe.2022.151735pt_PT
dc.identifier.issn00220981
dc.identifier.urihttp://hdl.handle.net/10400.12/8675
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationMarine and Environmental Sciences Centre
dc.relationAlgarve Centre for Marine Sciences
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectCaretta carettapt_PT
dc.subjectClutch mortalitypt_PT
dc.subjectThermal habitatspt_PT
dc.subjectGhost crab predationpt_PT
dc.subjectSea turtlespt_PT
dc.subjectCabo Verdept_PT
dc.titleGhost crab predation of loggerhead turtle eggs across thermal habitatspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMarine and Environmental Sciences Centre
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04292%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.citation.conferencePlaceNetherlandspt_PT
oaire.citation.startPage151735pt_PT
oaire.citation.titleJournal of Experimental Marine Biology and Ecologypt_PT
oaire.citation.volume551pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameNunes Martins
person.familyNameMarco
person.familyNameVinagre
person.familyNameRita Caldas Patrício
person.givenNameAna Rita
person.givenNameAdolfo
person.givenNameCatarina
person.givenNameAna
person.identifierB-3437-2019
person.identifier.ciencia-id2E16-5E6C-7EFD
person.identifier.ciencia-idBB12-951D-5B90
person.identifier.ciencia-id3F13-843A-791B
person.identifier.ciencia-id8D15-F799-1252
person.identifier.orcid0000-0002-2930-7028
person.identifier.orcid0000-0002-6523-9704
person.identifier.orcid0000-0003-2146-7948
person.identifier.orcid0000-0003-4963-2343
person.identifier.ridB-7118-2009
person.identifier.scopus-author-id7004971115
person.identifier.scopus-author-id53981714800
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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