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dc.contributor.author
Santos, Maria Mercedes  
dc.contributor.author
Juares, Mariana Alejandra  
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Rombola, Emilce Florencia  
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Garcia, Mirta Lidia  
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Coria, Néstor Rubén  
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Doncaster, C. Patrick  
dc.date.available
2023-05-09T13:29:04Z  
dc.date.issued
2012-07  
dc.identifier.citation
Santos, Maria Mercedes; Juares, Mariana Alejandra; Rombola, Emilce Florencia; Garcia, Mirta Lidia; Coria, Néstor Rubén; et al.; Over-representation of bird prey in pellets of South Polar Skuas; Springer; Journal Fur Ornithologie; 153; 3; 7-2012; 979-983  
dc.identifier.issn
0021-8375  
dc.identifier.uri
http://hdl.handle.net/11336/196779  
dc.description.abstract
We report the first study to compare the contents of pellets and regurgitates of South Polar Skuas, Stercorarius maccormicki, at two breeding colonies on the Antarctic Peninsula. Samples were taken across years from identified breeding pairs at Potter Peninsula in sympatry with 30-40 breeding pairs of Brown Skuas, Stercorarius antarcticus lonnbergi, and from Cierva Point with 2 pairs of Brown Skuas. In contrast to the general consensus that penguins feature in the diet most prominently in the absence of Brown Skuas, we found a much more frequent occurrence of penguin remains in samples at Potter than Cierva, but only in pellets. At Cierva, penguin feathers were largely replaced in the pellets by a high frequency of non-food moss. The rare occurrence of penguins in regurgitates from both sites is consistent with scavenging rather than active predation. The high frequency of feathers in pellets at Potter is consistent with a gut-cleansing function similar to that performed by moss, which is abundant only at Cierva. We conclude that pellets over-represent penguins in the diet. For any species that consumes feathers, the evidence must consider the alternative possibility of a nonfood function of ingesting feathers.  
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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
ANTARCTICA  
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DIETARY ANALYSIS  
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PELLET ANALYSIS  
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REGURGITATE ANALYSIS  
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SYMPATRIC  
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Ecología  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Over-representation of bird prey in pellets of South Polar Skuas  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
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info:eu-repo/semantics/publishedVersion  
dc.date.updated
2023-05-08T17:25:55Z  
dc.journal.volume
153  
dc.journal.number
3  
dc.journal.pagination
979-983  
dc.journal.pais
Alemania  
dc.journal.ciudad
Berlin  
dc.description.fil
Fil: Santos, Maria Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina  
dc.description.fil
Fil: Juares, Mariana Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina  
dc.description.fil
Fil: Rombola, Emilce Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina  
dc.description.fil
Fil: Garcia, Mirta Lidia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico Zoología Vertebrados; Argentina  
dc.description.fil
Fil: Coria, Néstor Rubén. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina  
dc.description.fil
Fil: Doncaster, C. Patrick. University of Southampton; Reino Unido  
dc.journal.title
Journal Fur Ornithologie  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s10336-012-0840-4  
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info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10336-012-0840-4