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dc.creatorBarrionuevo, Melina-
dc.creatorFrere, Esteban-
dc.date2018-02-06T21:36:50Z-
dc.date2018-02-06T21:36:50Z-
dc.date2014-
dc.date2018-02-06T20:09:16Z-
dc.date.accessioned2019-04-29T15:27:10Z-
dc.date.available2019-04-29T15:27:10Z-
dc.date.issued2018-02-06T21:36:50Z-
dc.date.issued2018-02-06T21:36:50Z-
dc.date.issued2014-
dc.date.issued2018-02-06T20:09:16Z-
dc.identifierBarrionuevo, Melina; Frere, Esteban; Parental investment in eggs and its effect on nestling growth and survival in Magellanic Penguins; Csiro Publishing; Emu; 114; 3; 2014; 259-267-
dc.identifier0158-4197-
dc.identifierhttp://hdl.handle.net/11336/35914-
dc.identifierCONICET Digital-
dc.identifierCONICET-
dc.identifier.urihttp://rodna.bn.gov.ar:8080/jspui/handle/bnmm/294409-
dc.descriptionLife-history variables evolve in response to cost-benefit trade-offs. For birds, larger eggs are thought to be beneficial for development of offspring but are energetically costly to produce. Further, egg-size dimorphism within or between clutches can vary with proximate and ultimate causes. We undertook a correlational study to evaluate parental investment in eggs by Magellanic Penguins (Spheniscus magellanicus) and how it affects the growth and survival of nestlings in Puerto Deseado, Argentina, over 3 years. We evaluated the variables that affected egg-volume and yolk-area (using a nondestructive technique), and determined the effects of egg-volume and yolk-area on growth and survival of young. Females in good body-condition laid larger second eggs and, in good years (i.e. years of high reproductive success in the colonies of the study area), yolk-area of second eggs was larger than that of first eggs. We found a positive association between egg-volume and nestling body-size and yolk-area was positively related to nestling survival. Our results suggest that the size of eggs within clutches varied with year and female body-condition. Moreover we demonstrate for the first time that yolk-area is a strong predictor of nestling survival in Magellanic Penguins.-
dc.descriptionFil: Barrionuevo, Melina. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina-
dc.descriptionFil: Frere, Esteban. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina-
dc.formatapplication/pdf-
dc.formatapplication/pdf-
dc.languageeng-
dc.publisherCsiro Publishing-
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1071/MU13067-
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/abs/10.1071/MU13067-
dc.rightsinfo:eu-repo/semantics/restrictedAccess-
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/-
dc.sourcereponame:CONICET Digital (CONICET)-
dc.sourceinstname:Consejo Nacional de Investigaciones Científicas y Técnicas-
dc.sourceinstacron:CONICET-
dc.subjectPingüino de Magallanes-
dc.subjectInversión parental-
dc.subjectVolumen de los huevos-
dc.subjectOtras Ciencias Biológicas-
dc.subjectCiencias Biológicas-
dc.subjectCIENCIAS NATURALES Y EXACTAS-
dc.titleParental investment in eggs and its effect on nestling growth and survival in Magellanic Penguins-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.typeinfo:ar-repo/semantics/articulo-
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