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Author |
Cherel Y., Charrassin J.B. & Handrich Y. |
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Title |
Comparison of Body Reserve Buildup in Prefasting Chicks and Adults of King penguins(Aptenodytes patagonicus). |
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Journal Article |
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Year |
1993 |
Publication |
Physiological zoology |
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Volume |
66 |
Issue |
5 |
Pages |
750-770 |
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137 |
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yes |
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521 |
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Author |
Milan S.E., Lester M., Sato N., Takizawa H. & Villain J.P. |
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Title |
Investigation of the relationship between optical auroral forms and HF radar E region backscatter. |
Type |
Journal Article |
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Year |
2000 |
Publication |
Annales geophysicae |
Abbreviated Journal |
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Volume |
18 |
Issue |
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Pages |
608-617 |
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312 |
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Bachelor's thesis |
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0992-7689 |
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yes |
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522 |
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Author |
Dumonteil E., Barre H. & Meissner G. |
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Title |
Effect of palmitol carnitine and related metabolites on the avian ca²+-AtPase and Ca²+ release channel. |
Type |
Book Chapter |
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Year |
1994 |
Publication |
Journal of physiology-Paris |
Abbreviated Journal |
J. Physiol. Paris |
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Volume |
479 |
Issue |
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Pages |
29-39 |
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131 |
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Bachelor's thesis |
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ISSN |
0928-4257 |
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yes |
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523 |
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Author |
Abbadi I. |
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Title |
Modélisation stochastique du cycle biologique de la truite – Application à la modélisation du cycle de la truite de mer de la baie Norvégienne aux Kerguelen. |
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Report |
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Year |
1995 |
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Diplôme d'Etudes Supérieures Spécialisées, Méthodes informatiques et modèles Mathématiques, Université Paul Sabatier |
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123 |
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yes |
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Call Number |
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Serial |
524 |
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Author |
Delille D. & Delille B. |
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Title |
Field observations on the variability of crude oil impact on indigenous hydrocarbon-degrading bacteria from sub-Antarctic intertidal sediments. |
Type |
Journal Article |
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Year |
2000 |
Publication |
Marine environmental research |
Abbreviated Journal |
Mar. Environ. Res. |
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Volume |
49 |
Issue |
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Pages |
403-417 |
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193 |
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ISSN |
0141-1136 |
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yes |
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Serial |
525 |
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Author |
Hanuise N., C.-A. Bost & Y. Handrich |
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Title |
Measuring foraging activity in a deep diving bird: comparing wiggles, oesophageal temperatures and beak-opening angles as proxies of feeding. 25th IOC Campos do Jordao, Brésil, 22-28 août 2010. |
Type |
Conference - International - Poster |
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Year |
2010 |
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Abstract |
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Programme |
394 |
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Approved |
yes |
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Serial |
526 |
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Author |
Cook Timothée R, Kato Akiko, Tanaka Hideji, Ropert-Coudert Yan, Bost Charles-André, |
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Title |
Buoyancy under Control: Underwater Locomotor Performance in a Deep Diving Seabird Suggests Respiratory Strategies for Reducing Foraging Effort
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Type |
Journal Article |
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Year |
2010 |
Publication |
PLoS ONE |
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Volume |
5 |
Issue |
3 |
Pages |
e9839 - |
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Abstract |
Background
Because they have air stored in many body compartments, diving seabirds are expected to exhibit efficient behavioural strategies for reducing costs related to buoyancy control. We study the underwater locomotor activity of a deep-diving species from the Cormorant family (Kerguelen shag) and report locomotor adjustments to the change of buoyancy with depth.
Methodology/Principal Findings
Using accelerometers, we show that during both the descent and ascent phases of dives, shags modelled their acceleration and stroking activity on the natural variation of buoyancy with depth. For example, during the descent phase, birds increased swim speed with depth. But in parallel, and with a decay constant similar to the one in the equation explaining the decrease of buoyancy with depth, they decreased foot-stroke frequency exponentially, a behaviour that enables birds to reduce oxygen consumption. During ascent, birds also reduced locomotor cost by ascending passively. We considered the depth at which they started gliding as a proxy to their depth of neutral buoyancy. This depth increased with maximum dive depth. As an explanation for this, we propose that shags adjust their buoyancy to depth by varying the amount of respiratory air they dive with.
Conclusions/Significance
Calculations based on known values of stored body oxygen volumes and on deep-diving metabolic rates in avian divers suggest that the variations of volume of respiratory oxygen associated with a respiration mediated buoyancy control only influence aerobic dive duration moderately. Therefore, we propose that an advantage in cormorants – as in other families of diving seabirds – of respiratory air volume adjustment upon diving could be related less to increasing time of submergence, through an increased volume of body oxygen stores, than to reducing the locomotor costs of buoyancy control. |
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394 |
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Publisher |
Public Library of Science |
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ISSN |
1932-6203 |
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Approved |
yes |
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Serial |
527 |
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Author |
Desrosiers P.M., Bhiry N., Lemieux A.M., Lofthouse S., Monchot H., Marguerie D. |
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Title |
The Qijurittuk site (IbGk-3), Eastern Hudson Bay: an IPY interdisciplinary study. |
Type |
Journal Article |
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Year |
2010 |
Publication |
GEOGRAFISK TIDSSKRIFT-DANISH JOURNAL OF GEOGRAPHY |
Abbreviated Journal |
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Volume |
110 |
Issue |
2 |
Pages |
227-243 |
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Abstract |
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Programme |
1080 |
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ISSN |
0016-7223 |
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Approved |
yes |
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Call Number |
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Serial |
528 |
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Author |
Weimerskirch H., Chastel O., Ackermann L., Chaurand T., Cuenot Chaillet F., Hindermeyer X. & Judas J. |
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Title |
Alternate long and short foraging trips in pelagic seabird parents. |
Type |
Journal Article |
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Year |
1994 |
Publication |
Animal behaviour |
Abbreviated Journal |
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Volume |
47 |
Issue |
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Pages |
472-476 |
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Programme |
109 |
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ISSN |
0003-3472 |
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yes |
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Serial |
529 |
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Author |
Nguyen B.C., Mihalopoulos N., Baboukas E. & Putaud J.P. |
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Title |
Seasonal variation of methanesulfonic acid in precipitation in the southern Indian Ocean. |
Type |
Conference - International - Communication |
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Year |
1995 |
Publication |
Europ.geophys.Soc. |
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Presented at the 20th General Assembly of the Europ.geophys.Soc. |
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146 |
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yes |
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Call Number |
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Serial |
530 |
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