Optimization of transit strategies while diving in foraging king penguins
International audience Optimal foraging theories predict that air-breathing, diving foragers should maximize time spent at feeding depths, and minimize time spent travelling between surface and depth (transits). The second part of this hypothesis was tested in free-ranging king penguins Aptenodytes...
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Online Access: | https://hal.archives-ouvertes.fr/hal-00804487 https://doi.org/10.1111/jzo.12026 |
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ftccsdartic:oai:HAL:hal-00804487v1 2023-05-15T17:03:53+02:00 Optimization of transit strategies while diving in foraging king penguins Hanuise, Nicolas André Bost, Charles Handrich, Yves Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS) Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) IPEV (programme394) 2013 https://hal.archives-ouvertes.fr/hal-00804487 https://doi.org/10.1111/jzo.12026 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/jzo.12026 hal-00804487 https://hal.archives-ouvertes.fr/hal-00804487 doi:10.1111/jzo.12026 ISSN: 0952-8369 EISSN: 1469-7998 Journal of Zoology https://hal.archives-ouvertes.fr/hal-00804487 Journal of Zoology, Wiley, 2013, 290 (3), pp.181-191. ⟨10.1111/jzo.12026⟩ vertical speed behavioural adjustments depth anticipation foraging success diving angle stroke frequency swimming speed transit time [SDE]Environmental Sciences [SDV.EE]Life Sciences [q-bio]/Ecology environment info:eu-repo/semantics/article Journal articles 2013 ftccsdartic https://doi.org/10.1111/jzo.12026 2021-12-05T03:32:30Z International audience Optimal foraging theories predict that air-breathing, diving foragers should maximize time spent at feeding depths, and minimize time spent travelling between surface and depth (transits). The second part of this hypothesis was tested in free-ranging king penguins Aptenodytes patagonicus using measurements of vertical speed, swimming speed, body angle and flipper stroke frequency during transits in relation to an index of foraging success (number of wiggles), during the bottom and the ascent phases of the dive. We found that, except for flipper stroke frequency, all measured variables increased with diving depth and foraging activity. The change in vertical speed was driven mainly by a change in body angle and a slight change in swimming speed. These results suggest a shortening of transit duration in response to increased foraging activity. Whereas the time spent commuting between the surface and foraging depths was reduced when foraging activity was high, vertical speed was only at its maximum over a small part of both ascent and descent phases of the dive. Within the first 10 m of descent, vertical speed increased with maximum dive depth and an index of foraging activity, suggesting that penguins anticipated their diving depth and foraging activity. Our results show that foraging king penguins adjust their diving behaviour in response to both diving depth and foraging activity. Further studies should consider ecological, physiological or mechanical constraints as factors that may limit foraging optimization. Article in Journal/Newspaper King Penguins Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Journal of Zoology 290 3 181 191 |
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 |
vertical speed behavioural adjustments depth anticipation foraging success diving angle stroke frequency swimming speed transit time [SDE]Environmental Sciences [SDV.EE]Life Sciences [q-bio]/Ecology environment |
spellingShingle |
vertical speed behavioural adjustments depth anticipation foraging success diving angle stroke frequency swimming speed transit time [SDE]Environmental Sciences [SDV.EE]Life Sciences [q-bio]/Ecology environment Hanuise, Nicolas André Bost, Charles Handrich, Yves Optimization of transit strategies while diving in foraging king penguins |
topic_facet |
vertical speed behavioural adjustments depth anticipation foraging success diving angle stroke frequency swimming speed transit time [SDE]Environmental Sciences [SDV.EE]Life Sciences [q-bio]/Ecology environment |
description |
International audience Optimal foraging theories predict that air-breathing, diving foragers should maximize time spent at feeding depths, and minimize time spent travelling between surface and depth (transits). The second part of this hypothesis was tested in free-ranging king penguins Aptenodytes patagonicus using measurements of vertical speed, swimming speed, body angle and flipper stroke frequency during transits in relation to an index of foraging success (number of wiggles), during the bottom and the ascent phases of the dive. We found that, except for flipper stroke frequency, all measured variables increased with diving depth and foraging activity. The change in vertical speed was driven mainly by a change in body angle and a slight change in swimming speed. These results suggest a shortening of transit duration in response to increased foraging activity. Whereas the time spent commuting between the surface and foraging depths was reduced when foraging activity was high, vertical speed was only at its maximum over a small part of both ascent and descent phases of the dive. Within the first 10 m of descent, vertical speed increased with maximum dive depth and an index of foraging activity, suggesting that penguins anticipated their diving depth and foraging activity. Our results show that foraging king penguins adjust their diving behaviour in response to both diving depth and foraging activity. Further studies should consider ecological, physiological or mechanical constraints as factors that may limit foraging optimization. |
author2 |
Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS) Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) IPEV (programme394) |
format |
Article in Journal/Newspaper |
author |
Hanuise, Nicolas André Bost, Charles Handrich, Yves |
author_facet |
Hanuise, Nicolas André Bost, Charles Handrich, Yves |
author_sort |
Hanuise, Nicolas |
title |
Optimization of transit strategies while diving in foraging king penguins |
title_short |
Optimization of transit strategies while diving in foraging king penguins |
title_full |
Optimization of transit strategies while diving in foraging king penguins |
title_fullStr |
Optimization of transit strategies while diving in foraging king penguins |
title_full_unstemmed |
Optimization of transit strategies while diving in foraging king penguins |
title_sort |
optimization of transit strategies while diving in foraging king penguins |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.archives-ouvertes.fr/hal-00804487 https://doi.org/10.1111/jzo.12026 |
genre |
King Penguins |
genre_facet |
King Penguins |
op_source |
ISSN: 0952-8369 EISSN: 1469-7998 Journal of Zoology https://hal.archives-ouvertes.fr/hal-00804487 Journal of Zoology, Wiley, 2013, 290 (3), pp.181-191. ⟨10.1111/jzo.12026⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/jzo.12026 hal-00804487 https://hal.archives-ouvertes.fr/hal-00804487 doi:10.1111/jzo.12026 |
op_doi |
https://doi.org/10.1111/jzo.12026 |
container_title |
Journal of Zoology |
container_volume |
290 |
container_issue |
3 |
container_start_page |
181 |
op_container_end_page |
191 |
_version_ |
1766057828836966400 |