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Keywords: Aptenodytes forsteri
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Journal Articles
J Exp Biol (2021) 224 (1): jeb230219.
Published: 11 January 2021
... 2 ) in emperor penguins ( Aptenodytes forsteri ) equipped with backpack P O 2 recorders. Cervical air sac P O 2 values at rest were lower than in other birds, while the cervical air sac to posterior thoracic air sac P O 2 difference was larger. Pre-dive cervical air sac P O 2 values were often...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (1): jeb170795.
Published: 9 January 2018
... Washington at night; if breeding males do this too, feeding before egg laying will help them endure the subsequent 65 day incubation of the egg. Aptenodytes forsteri Winter Cape Washington After the discovery of an emperor penguin ( Aptenodytes forsteri , Gray 1844) colony at Cape Crozier...
Journal Articles
Journal Articles
J Exp Biol (2006) 209 (8): 1413–1420.
Published: 15 April 2006
... of this behaviour in emperor penguins ( Aptenodytes forsteri ), whose failed breeders often kidnap chicks. We experimentally tested the hypothesis that kidnapping behaviour was the result of high residual levels of prolactin (PRL), a hormone involved in parental behaviour. Penguins with artificially decreased PRL...
Journal Articles
J Exp Biol (2005) 208 (15): 2973–2980.
Published: 1 August 2005
...T. Knower Stockard; J. Heil; J. U. Meir; K. Sato; K. V. Ponganis; P. J. Ponganis SUMMARY In order to determine the rate and magnitude of respiratory O 2 depletion during dives of emperor penguins ( Aptenodytes forsteri ),air sac O 2 partial pressure ( P O 2 )was recorded in 73 dives of four birds...
Journal Articles
J Exp Biol (2002) 205 (24): 3769–3774.
Published: 15 December 2002
... dive duration. * Author for correspondence (e-mail: pponganis@ucsd.edu ) 16 9 2002 © The Company of Biologists Limited 2002 2002 accelerometer aerobic dive limit Aptenodytes forsteri Crittercam dive emperor penguin stroke frequency Burst swimming (stroke...
Journal Articles
J Exp Biol (2000) 203 (21): 3275–3278.
Published: 1 November 2000
...P. J. Ponganis; R. P. Van Dam; G. Marshall; T. Knower; D. H. Levenson ABSTRACT Emperor penguins ( Aptenodytes forsteri ) were equipped with a remote underwater video camera, the Crittercam, to evaluate sub-ice foraging behavior while the birds dived from an isolated dive hole. Three birds dived...
Journal Articles
J Exp Biol (1999) 202 (7): 781–786.
Published: 1 April 1999
...P. J. Ponganis; L. N. Starke; M. Horning; G. L. Kooyman ABSTRACT To compare the diving capacities of juvenile and adult emperor penguins Aptenodytes forsteri , and to determine the physiological variables underlying the diving ability of juveniles, we monitored diving activity in juvenile penguins...
Journal Articles
Journal Articles
J Exp Biol (1994) 195 (1): 199–209.
Published: 1 October 1994
...G. L. Kooyman; P. J. Ponganis ABSTRACT Oxygen consumption , heart rate and blood chemistry were measured in four emperor penguins, Aptenodytes forsteri (Gray), during graded swimming exercise. The maximum obtained, 52 ml O 2 kg −1 min −1 , was 7.8 times the measured resting of 6.7 ml O 2 kg −1 min...
Journal Articles
J Exp Biol (1992) 165 (1): 161–180.
Published: 1 April 1992
... emperor penguin Aptenodytes forsteri If the term ‘diving’ is restricted to those swim activities in which an animal is voluntarily submerging itself under natural or quasi-natural conditions, then there have been few physiological studies of diving in aquatic animals. Most ‘diving’ experiments...