Mostrar el registro sencillo del ítem
dc.contributor.author
Sapoznikow, Alexandra
dc.contributor.author
Quintana, Flavio Roberto
dc.contributor.author
Kuba, Luisa
dc.date.available
2020-01-21T14:55:26Z
dc.date.issued
2009-12
dc.identifier.citation
Sapoznikow, Alexandra; Quintana, Flavio Roberto; Kuba, Luisa; Low seasonal variation in the diet of Rock Shags (Phalacrocorax magellanicus) at a Patagonian colony in Argentina; Csiro Publishing; Emu; 109; 1; 12-2009; 35-39
dc.identifier.issn
0158-4197
dc.identifier.uri
http://hdl.handle.net/11336/95391
dc.description.abstract
The characteristics of the food sources exploited by seabirds are one of the main factors determining the abundance and distribution of those birds. Determination of the diet over the year and between breeding and non-breeding seasons is important in understanding the food sources and their potential relationship with seabird population dynamics. We studied seasonality in the diet of the Rock Shag (Phalacrocorax magellanicus), a seabird endemic to southern Argentina and Chile, at a colony at Punta Loma, Chubut, by analysis of pellets (regurgitated casts) collected weekly during two consecutive non-breeding and breeding seasons in 2002 and 2003. We identified 19 prey-types in the diet. Polychaetes were the most common item, being present in 80-90% of the samples. Fish were also dominant in both non-breeding and breeding seasons (present in 60-80% of the pellets), especially species of Patagonotothen, Ribeiroclinus and Helcogrammoides. Crustaceans and cephalopods were also present in the diet, but to a lesser extent. There was a high overlap in dietary composition between non-breeding and breeding seasons, although more crustaceans and cephalopods were consumed during the non-breeding season in 2002. Results indicate that the food sources of Rock Shags are present in their feeding areas throughout the year, although many of these species are restricted in their availability, are of small size and have low energy content.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Csiro Publishing
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CORMORANTS
dc.subject
FORAGING ECOLOGY
dc.subject.classification
Ecología
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Low seasonal variation in the diet of Rock Shags (Phalacrocorax magellanicus) at a Patagonian colony in 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
2019-11-25T18:05:13Z
dc.journal.volume
109
dc.journal.number
1
dc.journal.pagination
35-39
dc.journal.pais
Australia
dc.journal.ciudad
Collingwood
dc.description.fil
Fil: Sapoznikow, Alexandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: Quintana, Flavio Roberto. Wildlife Conservation Society; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: Kuba, Luisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.journal.title
Emu
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1071/MU07061
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1071/MU07061
Archivos asociados