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dc.contributor.author Scioscia, Gabriela
dc.contributor.author Raya Rey, Andrea Nélida
dc.contributor.author Saenz Samaniego, Ricardo Andres
dc.contributor.author Florentin, Olga Viviana
dc.contributor.author Schiavini, Adrian Carlos Miguel
dc.date.available 2018-02-26T14:33:44Z
dc.date.issued 2014-08
dc.identifier.citation Scioscia, Gabriela; Raya Rey, Andrea Nélida; Saenz Samaniego, Ricardo Andres; Florentin, Olga Viviana; Schiavini, Adrian Carlos Miguel; Intra- and interannual variation in the diet of the Magellanic penguin (Spheniscusmagellanicus) at Martillo Island, Beagle Channel; Springer; Polar Biology; 37; 10; 8-2014; 1421-1433
dc.identifier.issn 0722-4060
dc.identifier.uri http://hdl.handle.net/11336/37085
dc.description.abstract Knowledge of seabirds’ diet at each breeding site and its temporal variation is key to understanding and evaluating how changes in marine resources affect each seabird population. In this study, we determined the diet of Magellanic penguins (MP, Spheniscus magellanicus) at Martillo Island, accounting for sex, breeding stage and year. We analyzed a total of 144 stomach contents during three consecutive breeding seasons (2006–2007, 2007–2008 and 2008–2009) and stages (incubation, early and late chick-rearing). MP fed mainly on fuegian sprat (Sprattus fuegensis), which represented 75 % of the biomass consumed by birds during the entire study. The next important prey was squat lobster (Munida gregaria), followed by Patagonian squid (Loligo gahi). Both sexes consumed similar prey items. We observed variation in diet relative composition among breeding years and stages. Fuegian sprat consumption decreased throughout the years whereas squat lobster increased. Penguins consumed a higher proportion of squat lobster and Patagonian squid during the incubation stage than in the chick-rearing stages, whereas fuegian sprat was almost the only prey item consumed during the late chick-rearing stage. MPs show certain flexibility in the use of resources probably as a response to changes in prey populations. Variability in the diet among different reproductive stages could be related to changes in the distribution and abundance of their main prey near the colony during the breeding season together with changes in the energy requirements of seabirds.
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 DIET COMPOSITION
dc.subject SEABIRDS
dc.subject SUB-ANTARCTIC
dc.subject TEMPORAL FLUCTUATION
dc.subject TIERRA DEL FUEGO
dc.subject.classification Otras Ciencias Biológicas
dc.subject.classification Ciencias Biológicas
dc.subject.classification CIENCIAS NATURALES Y EXACTAS
dc.title Intra- and interannual variation in the diet of the Magellanic penguin (Spheniscusmagellanicus) at Martillo Island, Beagle Channel
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2018-02-06T20:09:35Z
dc.journal.volume 37
dc.journal.number 10
dc.journal.pagination 1421-1433
dc.journal.pais Alemania
dc.journal.ciudad Berlín
dc.description.fil Fil: Scioscia, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil Fil: Raya Rey, Andrea Nélida. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil Fil: Saenz Samaniego, Ricardo Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil Fil: Florentin, Olga Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil Fil: Schiavini, Adrian Carlos Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Wildlife Conservation Society; Estados Unidos
dc.journal.title Polar Biology
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00300-014-1532-8
dc.conicet.fuente unificacion


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    Articulos de CENTRO AUSTRAL DE INVESTIGACIONES CIENTIFICAS

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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)