Estimating the critical body mass of king penguins
International audience King penguins (Aptenodytes patagonicus) can fast for over a month. However, they return to sea to forage before their body mass reaches a critical value (cMb), beyond which there is an increase in rate of mass loss and in protein catabolism, termed phase III of fasting. Thus w...
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Online Access: | https://hal.science/hal-00790398 https://doi.org/10.1007/s00300-007-0395-7 |
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ftunivnantes:oai:HAL:hal-00790398v1 2023-05-15T17:03:48+02:00 Estimating the critical body mass of king penguins G. Halsey, L. Coadic M., Le Handrich, Yves Centre for ornithology School of Biosciences-University of Birmingham Birmingham Laboratoire de Physiologie Intégrative Centre National de la Recherche Scientifique (CNRS) Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) 2008 https://hal.science/hal-00790398 https://doi.org/10.1007/s00300-007-0395-7 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-007-0395-7 hal-00790398 https://hal.science/hal-00790398 doi:10.1007/s00300-007-0395-7 ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-00790398 Polar Biology, 2008, 31, pp.395-398. ⟨10.1007/s00300-007-0395-7⟩ king penguins fasting critical body mass morphometrics [SDE]Environmental Sciences [SDV.BA]Life Sciences [q-bio]/Animal biology info:eu-repo/semantics/article Journal articles 2008 ftunivnantes https://doi.org/10.1007/s00300-007-0395-7 2023-03-08T00:02:41Z International audience King penguins (Aptenodytes patagonicus) can fast for over a month. However, they return to sea to forage before their body mass reaches a critical value (cMb), beyond which there is an increase in rate of mass loss and in protein catabolism, termed phase III of fasting. Thus when studying king penguins onshore, accurate estimation of their cMb and, in turn, the date at which that body mass would be reached, will be informative to behavioural and physiological data being collected. For penguins being studied during fasts in captivity, knowing cMb is particularly important because of the need to release the birds back into their colony while they are still in good nutritional condition. The present study investigates the validity of using measures of beak, flipper and foot length together to estimate cMb in king penguins and provides a simple and effective prediction equation for researchers. The three morphometric measurements, along with body mass just prior to going to sea after the moult fast (taken to represent cMb), were obtained for nine king penguins in a colony at the Crozet Archipelago. A multiple linear regression of the three morphometric measurements against cMb provided an R2 of 71.2%. Mean absolute percentage error of the estimate of cMb over the nine birds was 8.82 ± 1.20%. The described technique could probably be employed for estimating cMb in other long-fasting seabirds. Article in Journal/Newspaper King Penguins Polar Biology Université de Nantes: HAL-UNIV-NANTES Polar Biology 31 3 395 398 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
king penguins fasting critical body mass morphometrics [SDE]Environmental Sciences [SDV.BA]Life Sciences [q-bio]/Animal biology |
spellingShingle |
king penguins fasting critical body mass morphometrics [SDE]Environmental Sciences [SDV.BA]Life Sciences [q-bio]/Animal biology G. Halsey, L. Coadic M., Le Handrich, Yves Estimating the critical body mass of king penguins |
topic_facet |
king penguins fasting critical body mass morphometrics [SDE]Environmental Sciences [SDV.BA]Life Sciences [q-bio]/Animal biology |
description |
International audience King penguins (Aptenodytes patagonicus) can fast for over a month. However, they return to sea to forage before their body mass reaches a critical value (cMb), beyond which there is an increase in rate of mass loss and in protein catabolism, termed phase III of fasting. Thus when studying king penguins onshore, accurate estimation of their cMb and, in turn, the date at which that body mass would be reached, will be informative to behavioural and physiological data being collected. For penguins being studied during fasts in captivity, knowing cMb is particularly important because of the need to release the birds back into their colony while they are still in good nutritional condition. The present study investigates the validity of using measures of beak, flipper and foot length together to estimate cMb in king penguins and provides a simple and effective prediction equation for researchers. The three morphometric measurements, along with body mass just prior to going to sea after the moult fast (taken to represent cMb), were obtained for nine king penguins in a colony at the Crozet Archipelago. A multiple linear regression of the three morphometric measurements against cMb provided an R2 of 71.2%. Mean absolute percentage error of the estimate of cMb over the nine birds was 8.82 ± 1.20%. The described technique could probably be employed for estimating cMb in other long-fasting seabirds. |
author2 |
Centre for ornithology School of Biosciences-University of Birmingham Birmingham Laboratoire de Physiologie Intégrative Centre National de la Recherche Scientifique (CNRS) Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
G. Halsey, L. Coadic M., Le Handrich, Yves |
author_facet |
G. Halsey, L. Coadic M., Le Handrich, Yves |
author_sort |
G. Halsey, L. |
title |
Estimating the critical body mass of king penguins |
title_short |
Estimating the critical body mass of king penguins |
title_full |
Estimating the critical body mass of king penguins |
title_fullStr |
Estimating the critical body mass of king penguins |
title_full_unstemmed |
Estimating the critical body mass of king penguins |
title_sort |
estimating the critical body mass of king penguins |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-00790398 https://doi.org/10.1007/s00300-007-0395-7 |
genre |
King Penguins Polar Biology |
genre_facet |
King Penguins Polar Biology |
op_source |
ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-00790398 Polar Biology, 2008, 31, pp.395-398. ⟨10.1007/s00300-007-0395-7⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-007-0395-7 hal-00790398 https://hal.science/hal-00790398 doi:10.1007/s00300-007-0395-7 |
op_doi |
https://doi.org/10.1007/s00300-007-0395-7 |
container_title |
Polar Biology |
container_volume |
31 |
container_issue |
3 |
container_start_page |
395 |
op_container_end_page |
398 |
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1766057739739463680 |