Publication
Sex and migratory strategy influence corticosterone levels in winter-grown feathers, with positive breeding effects in a migratory pelagic seabird
| dc.contributor.author | Pérez, Cristóbal | |
| dc.contributor.author | Granadeiro, José Pedro | |
| dc.contributor.author | Dias, Maria P. | |
| dc.contributor.author | Catry, Paulo | |
| dc.date.accessioned | 2016-04-18T17:00:19Z | |
| dc.date.available | 2016-04-18T17:00:19Z | |
| dc.date.issued | 2016 | |
| dc.description.abstract | To overcome unpredictable stressful transitory events, animals trigger an allostatic response involving the hypothalamic-pituitary-adrenal cortex. This hormonal response, which involves the release of glucocorticoids which in turn mediate between the main physiological mechanisms that regulate the energetic demands and resource allocation trade-off with behavioural responses to environmental perturbations and may ultimately lead to variation in fitness. We have used the Cory's shearwater Calonectris borealis, a sexually dimorphic pelagic seabird with a partial migratory strategy, as a model bird species to analyse a number of traits related to the stress response. We investigated whether the activation of a stressful response, mediated by corticosterone, during the wintering period (1) correlated with the previous breeding success, (2) was affected by the migratory behaviour of male birds and (3) had consequences in the fitness of the birds. Corticosterone levels in feathers grown overwinter were analysed in 61 adult birds during three consecutive migratory periods (2009-2012) and in 14 immature birds in the wintering period 2010-2011. Moreover, the levels of corticosterone were analysed in experimental birds which were freed from their reproductive duties and compared with control birds which raised fledglings to the end of the breeding period. The results show that the levels of corticosterone were sex dependent, differed between years and were affected by the migratory strategy performed by the birds. The activation of the stressful response over the wintering period generated residual carry-over effects that positively affected the reproductive output in the subsequent breeding stage, a phenomenon previously undescribed in a long-lived pelagic seabird. Our study provides evidence that the analysis of corticosterone from feathers is a useful tool to evaluate carry-over effects in birds far away from breeding sites, opening new possibilities for future studies in this field. | pt_PT |
| dc.description.sponsorship | Spanish Ministerio de Educación; Fundação para a Ciência e a Tecnologia (FCT) | pt_PT |
| dc.identifier.citation | Oecologia. doi:10.1007/s00442-016-3625-2 | pt_PT |
| dc.identifier.doi | 10.1007/s00442-016-3625-2 | pt_PT |
| dc.identifier.issn | 0029-8549 | |
| dc.identifier.uri | http://hdl.handle.net/10400.12/4588 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.publisher | Springer | pt_PT |
| dc.relation | EDU 2728/2011 | pt_PT |
| dc.relation | EX2010-0748 | pt_PT |
| dc.relation | Foraging ecology, movements and abundance of an avian predator of mesopelagic prey: new and deeper insights using novel techniques and ideas | |
| dc.subject | Corticosterone | pt_PT |
| dc.subject | Stress response | pt_PT |
| dc.subject | Pelagic seabird | pt_PT |
| dc.subject | Life-history trade-offs | pt_PT |
| dc.subject | Carry-over effects | pt_PT |
| dc.subject | Cory’s shearwater | pt_PT |
| dc.title | Sex and migratory strategy influence corticosterone levels in winter-grown feathers, with positive breeding effects in a migratory pelagic seabird | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.awardTitle | Foraging ecology, movements and abundance of an avian predator of mesopelagic prey: new and deeper insights using novel techniques and ideas | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/5876/UID%2FMAR%2F04292%2F2013/PT | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FMAR%2F121071%2F2010/PT | |
| oaire.citation.conferencePlace | Heidelberg | pt_PT |
| oaire.citation.endPage | 9 | pt_PT |
| oaire.citation.startPage | 1 | pt_PT |
| oaire.citation.title | Oecologia | pt_PT |
| oaire.fundingStream | 5876 | |
| oaire.fundingStream | 3599-PPCDT | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| rcaap.rights | restrictedAccess | pt_PT |
| rcaap.type | article | pt_PT |
| relation.isProjectOfPublication | b45075bd-b8ca-49a6-bfec-2030828e7160 | |
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| relation.isProjectOfPublication.latestForDiscovery | 7f9aefbf-e812-499a-b397-fbd39d33b166 |