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dc.contributor.author
Carlini, A. R.  
dc.contributor.author
Daneri, Gustavo Adolfo  
dc.contributor.author
Márquez, María Elba Isabel  
dc.contributor.author
Bornemann, H.  
dc.contributor.author
Panarello, Hector Osvaldo  
dc.contributor.author
Casaux, R.  
dc.contributor.author
Ramdohr, S.  
dc.contributor.author
Plötz, J.  
dc.date.available
2021-11-25T18:17:36Z  
dc.date.issued
2005-10  
dc.identifier.citation
Carlini, A. R.; Daneri, Gustavo Adolfo; Márquez, María Elba Isabel; Bornemann, H.; Panarello, Hector Osvaldo; et al.; Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at King George Island; Springer Verlag Berlín; Polar Biology; 28; 10; 10-2005; 769-775  
dc.identifier.issn
0722-4060  
dc.identifier.uri
http://hdl.handle.net/11336/147438  
dc.description.abstract
Changes in mass and body composition, measured with labelled water, were used to quantify the energy expenditure during lactation and energy replenishment during the post-breeding aquatic phase in Southern elephant seal females at Stranger Point, King George Island. During lactation females spent a mean of 6,021±1,365 MJ, which resulted in a loss of 35% of the initial mass, comprising 63% of initial body fat and 20% of initial body protein. During the 58±5.4 day post-breeding foraging period, females gained 135±39 Kg, which allowed them to recover an average of 55% of the mass, including 46% of the fat, 71% of the protein and 47% of the energy lost during lactation. Neither the mass nor the energy lost during lactation were related to those replenished while at sea. However, protein loss expressed in absolute terms or as a proportion of that present at the beginning of lactation explained about 50% of the variation in the protein gained during the post-breeding phase. This might indicate the presence of a mechanism favouring an increase in lean tissue during post-breeding. Daily energy requirements for an average sized female, during the post-breeding aquatic phase were estimated at 96 MJ. Estimation of prey consumption varies according to assumptions about diet composition. On a basis of 450 females, the total biomass of fish and squid consumed by the breeding group, assuming a diet composed of 75% cephalopods and 25% fish, was estimated to be 521 and 174 metric tonnes, respectively, for the period examined.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Springer Verlag Berlín  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Prey Item  
dc.subject
Basal Metabolic Rate  
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Total Body Water  
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Lactation Period  
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Elephant Seal  
dc.subject.classification
Química Analítica  
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Ciencias Químicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at King George Island  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2020-05-15T15:56:38Z  
dc.identifier.eissn
1432-2056  
dc.journal.volume
28  
dc.journal.number
10  
dc.journal.pagination
769-775  
dc.journal.pais
Alemania  
dc.journal.ciudad
Berlin  
dc.description.fil
Fil: Carlini, A. R.. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina  
dc.description.fil
Fil: Daneri, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina  
dc.description.fil
Fil: Márquez, María Elba Isabel. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina  
dc.description.fil
Fil: Bornemann, H.. Alfred-Wegener-Institut. Helmholtz-Zentrum für Polar und Meeresforschung; Alemania  
dc.description.fil
Fil: Panarello, Hector Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geocronología y Geología Isotópica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geocronología y Geología Isotópica; Argentina  
dc.description.fil
Fil: Casaux, R.. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina  
dc.description.fil
Fil: Ramdohr, S.. Alfred-Wegener-Institut. Helmholtz-Zentrum für Polar und Meeresforschung; Alemania  
dc.description.fil
Fil: Plötz, J.. Alfred-Wegener-Institut. Helmholtz-Zentrum für Polar und Meeresforschung; Alemania  
dc.journal.title
Polar Biology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00300-005-0004-6  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00300-005-0004-6