Mostrar el registro sencillo del ítem
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/openAccess
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
Archivos asociados