Optimizing travel time to foraging depths: testing predictions in a deep diver, the king penguin
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...
Published in: | Journal of Zoology |
---|---|
Main Authors: | , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2013
|
Subjects: | |
Online Access: | https://hal.science/hal-00794657 https://doi.org/10.1111/jzo.12026 |
id |
fthalin2p3:oai:HAL:hal-00794657v1 |
---|---|
record_format |
openpolar |
spelling |
fthalin2p3:oai:HAL:hal-00794657v1 2024-05-12T08:06:31+00:00 Optimizing travel time to foraging depths: testing predictions in a deep diver, the king penguin Hanuise, Nicolas Bost, Charles-André Handrich, Yves Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Centre d'Études Biologiques de Chizé (CEBC) Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) 2013 https://hal.science/hal-00794657 https://doi.org/10.1111/jzo.12026 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/jzo.12026 hal-00794657 https://hal.science/hal-00794657 doi:10.1111/jzo.12026 ISSN: 0952-8369 EISSN: 1469-7998 Journal of Zoology https://hal.science/hal-00794657 Journal of Zoology, 2013, 290 (3), pp.181-191. ⟨10.1111/jzo.12026⟩ behavioural adjustments depth anticipation foraging success diving angle stroke frequency swimming speed transit time vertical speed [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2013 fthalin2p3 https://doi.org/10.1111/jzo.12026 2024-04-17T14:59:51Z 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 HAL-IN2P3 (Institut national de physique nucléaire et de physique des particules) Journal of Zoology 290 3 181 191 |
institution |
Open Polar |
collection |
HAL-IN2P3 (Institut national de physique nucléaire et de physique des particules) |
op_collection_id |
fthalin2p3 |
language |
English |
topic |
behavioural adjustments depth anticipation foraging success diving angle stroke frequency swimming speed transit time vertical speed [SDE]Environmental Sciences |
spellingShingle |
behavioural adjustments depth anticipation foraging success diving angle stroke frequency swimming speed transit time vertical speed [SDE]Environmental Sciences Hanuise, Nicolas Bost, Charles-André Handrich, Yves Optimizing travel time to foraging depths: testing predictions in a deep diver, the king penguin |
topic_facet |
behavioural adjustments depth anticipation foraging success diving angle stroke frequency swimming speed transit time vertical speed [SDE]Environmental Sciences |
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) Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Centre d'Études Biologiques de Chizé (CEBC) Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Hanuise, Nicolas Bost, Charles-André Handrich, Yves |
author_facet |
Hanuise, Nicolas Bost, Charles-André Handrich, Yves |
author_sort |
Hanuise, Nicolas |
title |
Optimizing travel time to foraging depths: testing predictions in a deep diver, the king penguin |
title_short |
Optimizing travel time to foraging depths: testing predictions in a deep diver, the king penguin |
title_full |
Optimizing travel time to foraging depths: testing predictions in a deep diver, the king penguin |
title_fullStr |
Optimizing travel time to foraging depths: testing predictions in a deep diver, the king penguin |
title_full_unstemmed |
Optimizing travel time to foraging depths: testing predictions in a deep diver, the king penguin |
title_sort |
optimizing travel time to foraging depths: testing predictions in a deep diver, the king penguin |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.science/hal-00794657 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.science/hal-00794657 Journal of Zoology, 2013, 290 (3), pp.181-191. ⟨10.1111/jzo.12026⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/jzo.12026 hal-00794657 https://hal.science/hal-00794657 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_ |
1798849022460428288 |