Lactation costs in southern elephant seals at King George Island, South Shetland Islands
Labelled-water methodology was used to quantify energy costs and energy transfer efficiency in 18 mother-pup pairs of southern elephant seals (Mirounga leonina) during lactation. During the lactation period, mothers lost a mean mass of 227 ± 47 kg. Mass loss included 22% of the protein, 60% of the f...
Main Author: | |
---|---|
Language: | unknown |
Published: |
2004
|
Subjects: | |
Online Access: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v27_n5_p266_Carlini https://hdl.handle.net/20.500.12110/paper_07224060_v27_n5_p266_Carlini |
id |
ftunibueairesbd:paper:paper_07224060_v27_n5_p266_Carlini |
---|---|
record_format |
openpolar |
spelling |
ftunibueairesbd:paper:paper_07224060_v27_n5_p266_Carlini 2023-05-15T13:42:26+02:00 Lactation costs in southern elephant seals at King George Island, South Shetland Islands Panarello, Hector Osvaldo 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v27_n5_p266_Carlini https://hdl.handle.net/20.500.12110/paper_07224060_v27_n5_p266_Carlini unknown https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v27_n5_p266_Carlini http://hdl.handle.net/20.500.12110/paper_07224060_v27_n5_p266_Carlini bioenergetics lactation parent-offspring interaction pinniped reproductive cost Antarctica King George Island South Shetland Islands elephant Mirounga leonina Phocidae 2004 ftunibueairesbd https://doi.org/20.500.12110/paper_07224060_v27_n5_p266_Carlini 2023-02-16T01:56:49Z Labelled-water methodology was used to quantify energy costs and energy transfer efficiency in 18 mother-pup pairs of southern elephant seals (Mirounga leonina) during lactation. During the lactation period, mothers lost a mean mass of 227 ± 47 kg. Mass loss included 22% of the protein, 60% of the fat, and 51% of the energy in the mother's body upon arrival. Total body-energy reserves at parturition explained 69% of the variation in the total lactation costs and 50% of the variation in the pup's body energy at weaning. On average, pups retained 48% of the mass, 49% of protein, 53% of fat and 51% of energy lost by their mothers. Greater, fatter females showed a decrease in the efficiency of energy and fat transfer and, at the same time, an increase in the efficiency of protein transfer. This may be due to an increased use of protein as metabolic fuel, as fat demands for milk production increase. There was no evidence that greater total lactation costs influence the ability of mothers to produce a pup in the next breeding season. © Springer-Verlag 2004. Fil:Panarello, H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Other/Unknown Material Antarc* Antarctica Elephant Seals King George Island Mirounga leonina South Shetland Islands Southern Elephant Seals Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) Argentina King George Island South Shetland Islands |
institution |
Open Polar |
collection |
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) |
op_collection_id |
ftunibueairesbd |
language |
unknown |
topic |
bioenergetics lactation parent-offspring interaction pinniped reproductive cost Antarctica King George Island South Shetland Islands elephant Mirounga leonina Phocidae |
spellingShingle |
bioenergetics lactation parent-offspring interaction pinniped reproductive cost Antarctica King George Island South Shetland Islands elephant Mirounga leonina Phocidae Panarello, Hector Osvaldo Lactation costs in southern elephant seals at King George Island, South Shetland Islands |
topic_facet |
bioenergetics lactation parent-offspring interaction pinniped reproductive cost Antarctica King George Island South Shetland Islands elephant Mirounga leonina Phocidae |
description |
Labelled-water methodology was used to quantify energy costs and energy transfer efficiency in 18 mother-pup pairs of southern elephant seals (Mirounga leonina) during lactation. During the lactation period, mothers lost a mean mass of 227 ± 47 kg. Mass loss included 22% of the protein, 60% of the fat, and 51% of the energy in the mother's body upon arrival. Total body-energy reserves at parturition explained 69% of the variation in the total lactation costs and 50% of the variation in the pup's body energy at weaning. On average, pups retained 48% of the mass, 49% of protein, 53% of fat and 51% of energy lost by their mothers. Greater, fatter females showed a decrease in the efficiency of energy and fat transfer and, at the same time, an increase in the efficiency of protein transfer. This may be due to an increased use of protein as metabolic fuel, as fat demands for milk production increase. There was no evidence that greater total lactation costs influence the ability of mothers to produce a pup in the next breeding season. © Springer-Verlag 2004. Fil:Panarello, H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. |
author |
Panarello, Hector Osvaldo |
author_facet |
Panarello, Hector Osvaldo |
author_sort |
Panarello, Hector Osvaldo |
title |
Lactation costs in southern elephant seals at King George Island, South Shetland Islands |
title_short |
Lactation costs in southern elephant seals at King George Island, South Shetland Islands |
title_full |
Lactation costs in southern elephant seals at King George Island, South Shetland Islands |
title_fullStr |
Lactation costs in southern elephant seals at King George Island, South Shetland Islands |
title_full_unstemmed |
Lactation costs in southern elephant seals at King George Island, South Shetland Islands |
title_sort |
lactation costs in southern elephant seals at king george island, south shetland islands |
publishDate |
2004 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v27_n5_p266_Carlini https://hdl.handle.net/20.500.12110/paper_07224060_v27_n5_p266_Carlini |
geographic |
Argentina King George Island South Shetland Islands |
geographic_facet |
Argentina King George Island South Shetland Islands |
genre |
Antarc* Antarctica Elephant Seals King George Island Mirounga leonina South Shetland Islands Southern Elephant Seals |
genre_facet |
Antarc* Antarctica Elephant Seals King George Island Mirounga leonina South Shetland Islands Southern Elephant Seals |
op_relation |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v27_n5_p266_Carlini http://hdl.handle.net/20.500.12110/paper_07224060_v27_n5_p266_Carlini |
op_doi |
https://doi.org/20.500.12110/paper_07224060_v27_n5_p266_Carlini |
_version_ |
1766167723747835904 |