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dc.contributor.author
Dodino, Samanta Graciela
dc.contributor.author
Riccialdelli, Luciana
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Polito, Michael J.
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Pütz, Klemens
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Raya Rey, Andrea Nélida
dc.date.available
2024-03-25T12:15:47Z
dc.date.issued
2023-06
dc.identifier.citation
Dodino, Samanta Graciela; Riccialdelli, Luciana; Polito, Michael J.; Pütz, Klemens; Raya Rey, Andrea Nélida; Variation in the trophic niche and food provisioning between the early and late chick-rearing stages in Magellanic penguins Spheniscus magellanicus at Martillo Island, Tierra del Fuego, Argentina; Springer; Marine Biology; 170; 8; 6-2023; 1-13
dc.identifier.issn
0025-3162
dc.identifier.uri
http://hdl.handle.net/11336/231405
dc.description.abstract
Variation in the foraging niche and parental provisioning behaviors of breeding seabirds have the potential to afect population dynamics (e.g. foraging success, breeding productivity, and ultimately population size). We sampled blood plasma of family’ groups (females, males, and chicks) of Magellanic penguins (Spheniscus magellanicus) from Martillo Island, Argentina. We used stable isotope analyses on plasma samples to examine food provisioning, isotopic niche, trophic position, and diet composition of penguins between the early and late chick-rearing periods. We found clear diferences in the isotopic niches of penguins between the two stages of the chick-rearing period related to shifts in foraging habitat and/or diet composition between stages. We found no evidence of individual consistency in isotopic niches or sex-specifc selective provisioning by adults. In addition, we found high variability within family groups (accounting for 90% of the total isotopic variability). This study improves our understanding of the age, sex, individual, and breeding stage-specifc trophic niches of Magellanic penguins, which may be helpful in projecting how they may respond to future environmental change (e.g., changes that afect prey availability).
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
stable isotopes
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individual consistency
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breeding season
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seabirds
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Ecología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Variation in the trophic niche and food provisioning between the early and late chick-rearing stages in Magellanic penguins Spheniscus magellanicus at Martillo Island, Tierra del Fuego, Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-03-08T15:17:23Z
dc.journal.volume
170
dc.journal.number
8
dc.journal.pagination
1-13
dc.journal.pais
Alemania
dc.description.fil
Fil: Dodino, Samanta Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Riccialdelli, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Polito, Michael J.. Louisiana State University Health Sciences Center New Orleans (lsu Health);
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Fil: Pütz, Klemens. Antarctic Research Trust; Alemania
dc.description.fil
Fil: Raya Rey, Andrea Nélida. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.journal.title
Marine Biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00227-023-04242-z
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00227-023-04242-z
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