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dc.contributor.author
Rosciano, Natalia Gimena
dc.contributor.author
Polito, Michael J.
dc.contributor.author
Raya Rey, Andrea Nélida
dc.date.available
2020-11-30T14:29:42Z
dc.date.issued
2019-08
dc.identifier.citation
Rosciano, Natalia Gimena; Polito, Michael J.; Raya Rey, Andrea Nélida; What´s for dinner mom? Selective provisioning in southern rockhopper penguins (Eudyptes chrysocome); Springer; Polar Biology; 42; 8; 8-2019; 1529-1535
dc.identifier.issn
0722-4060
dc.identifier.uri
http://hdl.handle.net/11336/119344
dc.description.abstract
Breeding seabirds must balance self-care and reproduction, especially once offspring have hatched and have to be fed regularly. Seabirds may selectively provision chicks with higher quality food than they consume themselves. In contrast, adults may prioritize their survival rather than their progeny by feeding chicks with lower quality prey items than they feed themselves. We examined the parental provisioning strategies of southern rockhopper penguins at Isla de los Estados in 2012 using nitrogen (δ15N) and carbon (δ13C) stable isotope analysis to determine if selective provisioning and foraging habitat differences exist between parents and their offspring. We found that chicks had higher δ15N values compared to both male and female penguins, and female had slightly higher δ15N values compared to male penguins. There was also a strong positive relationship in δ15N values between female penguins and their offspring, indicating that chicks? diet resembles the female parent more than the male parent. Our results support the hypothesis of selective provisioning of chicks with higher trophic level (i.e., δ15N value) prey and the observation that females exclusively feed chicks during the guard stage. We did not find differences in δ13C values between adult and chicks suggesting no differences in the areas or habitats used to forage for self-provisioning and chick-provisioning. These findings likely have broader significance as provisioning rates and quality of food consumed by chicks is often strongly related to chick growth and survival.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
EUDYPTESCHRYSOCOME
dc.subject
ISLA DE LOS ESTADOS
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PARENTAL PROVISIONING
dc.subject
STABLE ISOTOPES
dc.subject.classification
Conservación de la Biodiversidad
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
What´s for dinner mom? Selective provisioning in southern rockhopper penguins (Eudyptes chrysocome)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-11-11T19:00:47Z
dc.journal.volume
42
dc.journal.number
8
dc.journal.pagination
1529-1535
dc.journal.pais
Alemania
dc.description.fil
Fil: Rosciano, Natalia Gimena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Polito, Michael J.. Louisiana Tech University; Estados Unidos
dc.description.fil
Fil: Raya Rey, Andrea Nélida. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur. Instituto de Ciencias Polares, Ambientales y Recursos Naturales; Argentina
dc.journal.title
Polar Biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00300-019-02538-9
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00300-019-02538-9
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