Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at King George Island
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...
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ftconicet:oai:ri.conicet.gov.ar:11336/147438 2023-10-09T21:51:02+02:00 Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at King George Island Carlini, A. R. Daneri, Gustavo Adolfo Márquez, María Elba Isabel Bornemann, H. Panarello, Hector Osvaldo Casaux, R. Ramdohr, S. Plötz, J. application/pdf http://hdl.handle.net/11336/147438 eng eng Springer Verlag Berlín info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-005-0004-6 info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00300-005-0004-6 http://hdl.handle.net/11336/147438 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 0722-4060 1432-2056 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ Prey Item Basal Metabolic Rate Total Body Water Lactation Period Elephant Seal https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1007/s00300-005-0004-6 2023-09-24T19:15:58Z 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. © Springer-Verlag. Fil: Carlini, A. R. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina 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 Fil: Márquez, María Elba Isabel. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección ... Article in Journal/Newspaper Dirección Nacional del Antártico Elephant Seal Instituto Antártico Argentino King George Island Polar Biology Southern Elephant Seal CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) King George Island Argentino Argentina Gustavo ENVELOPE(-62.917,-62.917,-64.833,-64.833) Stranger Point ENVELOPE(-58.618,-58.618,-62.262,-62.262) Polar Biology 28 10 769 775 |
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Open Polar |
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CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
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language |
English |
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Prey Item Basal Metabolic Rate Total Body Water Lactation Period Elephant Seal https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
spellingShingle |
Prey Item Basal Metabolic Rate Total Body Water Lactation Period Elephant Seal https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 Carlini, A. R. Daneri, Gustavo Adolfo Márquez, María Elba Isabel Bornemann, H. Panarello, Hector Osvaldo Casaux, R. Ramdohr, S. Plötz, J. Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at King George Island |
topic_facet |
Prey Item Basal Metabolic Rate Total Body Water Lactation Period Elephant Seal https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
description |
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. © Springer-Verlag. Fil: Carlini, A. R. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina 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 Fil: Márquez, María Elba Isabel. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección ... |
format |
Article in Journal/Newspaper |
author |
Carlini, A. R. Daneri, Gustavo Adolfo Márquez, María Elba Isabel Bornemann, H. Panarello, Hector Osvaldo Casaux, R. Ramdohr, S. Plötz, J. |
author_facet |
Carlini, A. R. Daneri, Gustavo Adolfo Márquez, María Elba Isabel Bornemann, H. Panarello, Hector Osvaldo Casaux, R. Ramdohr, S. Plötz, J. |
author_sort |
Carlini, A. R. |
title |
Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at King George Island |
title_short |
Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at King George Island |
title_full |
Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at King George Island |
title_fullStr |
Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at King George Island |
title_full_unstemmed |
Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at King George Island |
title_sort |
food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at king george island |
publisher |
Springer Verlag Berlín |
url |
http://hdl.handle.net/11336/147438 |
long_lat |
ENVELOPE(-62.917,-62.917,-64.833,-64.833) ENVELOPE(-58.618,-58.618,-62.262,-62.262) |
geographic |
King George Island Argentino Argentina Gustavo Stranger Point |
geographic_facet |
King George Island Argentino Argentina Gustavo Stranger Point |
genre |
Dirección Nacional del Antártico Elephant Seal Instituto Antártico Argentino King George Island Polar Biology Southern Elephant Seal |
genre_facet |
Dirección Nacional del Antártico Elephant Seal Instituto Antártico Argentino King George Island Polar Biology Southern Elephant Seal |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-005-0004-6 info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00300-005-0004-6 http://hdl.handle.net/11336/147438 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 0722-4060 1432-2056 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1007/s00300-005-0004-6 |
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Polar Biology |
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28 |
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10 |
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769 |
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775 |
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