Buoyancy and maximal diving depth in penguins
International audience SUMMARY Using a newly developed data logger to measure acceleration, we demonstrate that free-ranging king and Adélie penguins only beat their flippers substantially during the first part of descent or when they were presumed to be chasing prey at the bottom of dives. Flipper...
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Online Access: | https://hal.science/hal-03692397 https://doi.org/10.1242/jeb.205.9.1189 |
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ftccsdartic:oai:HAL:hal-03692397v1 2023-12-17T10:32:55+01:00 Buoyancy and maximal diving depth in penguins Sato, Katsufumi Naito, Y. Kato, A. Niizuma, Y. Watanuki, Y. Charrassin, Jean-Benoit Bost, Charles-André Handrich, Y. Le Maho, Y. National Institute of Polar Research Tokyo (NiPR) Hokkaido Information University Laboratoire d'océanographie dynamique et de climatologie (LODYC) Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Centre d'écologie et physiologie énergétiques (CEPE) Centre National de la Recherche Scientifique (CNRS) 2002-05-01 https://hal.science/hal-03692397 https://doi.org/10.1242/jeb.205.9.1189 en eng HAL CCSD The Company of Biologists info:eu-repo/semantics/altIdentifier/doi/10.1242/jeb.205.9.1189 hal-03692397 https://hal.science/hal-03692397 doi:10.1242/jeb.205.9.1189 WOS: 00175725600001 ISSN: 0022-0949 EISSN: 1477-9145 Journal of Experimental Biology https://hal.science/hal-03692397 Journal of Experimental Biology, 2002, 205 (9), pp.1189-1197. ⟨10.1242/jeb.205.9.1189⟩ [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2002 ftccsdartic https://doi.org/10.1242/jeb.205.9.1189 2023-11-19T00:09:22Z International audience SUMMARY Using a newly developed data logger to measure acceleration, we demonstrate that free-ranging king and Adélie penguins only beat their flippers substantially during the first part of descent or when they were presumed to be chasing prey at the bottom of dives. Flipper beating stopped during the latter part of ascent: at 29±9 % (mean ± S.D.) of dive depth(mean dive depth=136.8±145.1 m, N=425 dives) in king penguins,and at 52±20 % of dive depth (mean dive depth=72.9±70.5 m, N=664 dives) in Adélie penguins. Propulsive swim speeds of both species were approximately 2 m s-1 during dives; however, a marked increase in speed, up to approximately 2.9 m s-1, sometimes occurred in king penguins during the passive ascending periods. During the prolonged ascending, oblique ascent angle and slowdown near the surface may represent one way to avoid the potential risk of decompression sickness. Biomechanical calculations for data from free-ranging king and Adélie penguins indicate that the air volume of the birds (respiratory system and plumage) can provide enough buoyancy for the passive ascent. When comparing the passive ascents for shallow and deep dives, there is a positive correlation between air volume and the depth of the dive. This suggests that penguins regulate their air volume to optimize the costs and benefits of buoyancy. Article in Journal/Newspaper King Penguins Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Journal of Experimental Biology 205 9 1189 1197 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] Sato, Katsufumi Naito, Y. Kato, A. Niizuma, Y. Watanuki, Y. Charrassin, Jean-Benoit Bost, Charles-André Handrich, Y. Le Maho, Y. Buoyancy and maximal diving depth in penguins |
topic_facet |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
description |
International audience SUMMARY Using a newly developed data logger to measure acceleration, we demonstrate that free-ranging king and Adélie penguins only beat their flippers substantially during the first part of descent or when they were presumed to be chasing prey at the bottom of dives. Flipper beating stopped during the latter part of ascent: at 29±9 % (mean ± S.D.) of dive depth(mean dive depth=136.8±145.1 m, N=425 dives) in king penguins,and at 52±20 % of dive depth (mean dive depth=72.9±70.5 m, N=664 dives) in Adélie penguins. Propulsive swim speeds of both species were approximately 2 m s-1 during dives; however, a marked increase in speed, up to approximately 2.9 m s-1, sometimes occurred in king penguins during the passive ascending periods. During the prolonged ascending, oblique ascent angle and slowdown near the surface may represent one way to avoid the potential risk of decompression sickness. Biomechanical calculations for data from free-ranging king and Adélie penguins indicate that the air volume of the birds (respiratory system and plumage) can provide enough buoyancy for the passive ascent. When comparing the passive ascents for shallow and deep dives, there is a positive correlation between air volume and the depth of the dive. This suggests that penguins regulate their air volume to optimize the costs and benefits of buoyancy. |
author2 |
National Institute of Polar Research Tokyo (NiPR) Hokkaido Information University Laboratoire d'océanographie dynamique et de climatologie (LODYC) Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Centre d'écologie et physiologie énergétiques (CEPE) Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Sato, Katsufumi Naito, Y. Kato, A. Niizuma, Y. Watanuki, Y. Charrassin, Jean-Benoit Bost, Charles-André Handrich, Y. Le Maho, Y. |
author_facet |
Sato, Katsufumi Naito, Y. Kato, A. Niizuma, Y. Watanuki, Y. Charrassin, Jean-Benoit Bost, Charles-André Handrich, Y. Le Maho, Y. |
author_sort |
Sato, Katsufumi |
title |
Buoyancy and maximal diving depth in penguins |
title_short |
Buoyancy and maximal diving depth in penguins |
title_full |
Buoyancy and maximal diving depth in penguins |
title_fullStr |
Buoyancy and maximal diving depth in penguins |
title_full_unstemmed |
Buoyancy and maximal diving depth in penguins |
title_sort |
buoyancy and maximal diving depth in penguins |
publisher |
HAL CCSD |
publishDate |
2002 |
url |
https://hal.science/hal-03692397 https://doi.org/10.1242/jeb.205.9.1189 |
genre |
King Penguins |
genre_facet |
King Penguins |
op_source |
ISSN: 0022-0949 EISSN: 1477-9145 Journal of Experimental Biology https://hal.science/hal-03692397 Journal of Experimental Biology, 2002, 205 (9), pp.1189-1197. ⟨10.1242/jeb.205.9.1189⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1242/jeb.205.9.1189 hal-03692397 https://hal.science/hal-03692397 doi:10.1242/jeb.205.9.1189 WOS: 00175725600001 |
op_doi |
https://doi.org/10.1242/jeb.205.9.1189 |
container_title |
Journal of Experimental Biology |
container_volume |
205 |
container_issue |
9 |
container_start_page |
1189 |
op_container_end_page |
1197 |
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1785586771286818816 |