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Keywords: Diving
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Journal Articles
J Exp Biol (2025) 228 (6): jeb249813.
Published: 19 March 2025
... and maximize foraging time. Physiological adjustments can be mediated through O 2 consumption, driven by muscle mitochondria, which can also produce reactive oxygen species during reoxygenation. Southern elephant seals spend months foraging at sea, diving for up to 1 h. Pups transition abruptly to aquatic life...
Includes: Supplementary data
Journal Articles
J Exp Biol (2024) 227 (20): jeb246472.
Published: 23 August 2024
...Andreas Fahlman; Warren Burggren; William K. Milsom ABSTRACT The dive response involves three main components – breath holding, reduced heart rate and increased peripheral vasoconstriction – and is ubiquitous during forced dives in air-breathing vertebrates; however, numerous studies in free-diving...
Journal Articles
Journal Articles
J Exp Biol (2021) 224 (23): jeb242993.
Published: 9 December 2021
...Alicia Borque-Espinosa; Karyn D. Rode; Diana Ferrero-Fernández; Anabel Forte; Romana Capaccioni-Azzati; Andreas Fahlman ABSTRACT Walruses rely on sea-ice to efficiently forage and rest between diving bouts while maintaining proximity to prime foraging habitat. Recent declines in summer sea ice have...
Includes: Supplementary data
Journal Articles
Journal Articles
J Exp Biol (2021) 224 (12): jeb242512.
Published: 16 June 2021
... foraging sites, they have to develop effective prey search patterns and physiological capacities that enable them to capture sufficient prey to meet their energetic needs. Animals that dive to forage, such as king penguins ( Aptenodytes patagonicus ), need to acquire an adequate breath-hold capacity...
Journal Articles
J Exp Biol (2019) 222 (13): jeb201285.
Published: 2 July 2019
...Anthony B. Lapsansky; Bret W. Tobalske ABSTRACT Alcids, a family of seabirds including murres, guillemots and puffins, exhibit the greatest mass-specific dive depths and durations of any birds or mammals. These impressive diving capabilities have motivated numerous studies on the biomechanics...
Journal Articles
J Exp Biol (2019) 222 (8): jeb200824.
Published: 24 April 2019
...Cassondra L. Williams; Katsufumi Sato; Paul J. Ponganis ABSTRACT Marine turtles spend their life at sea and can rest on the seafloor for hours. As air-breathers, the breath-hold capacity of marine turtles is a function of oxygen (O 2 ) stores, O 2 consumption during dives and hypoxia tolerance...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (6): jeb199828.
Published: 21 March 2019
... contraction with wortmannin (10 µmol l −1 perfusion) approximately doubled baseline stroke volume and cardiac output. We suggest that atrial smooth muscle provides a unique mechanism to control cardiac filling that could be involved in the regulation of stroke volume during diving. All statistical analysis...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (13): jeb182170.
Published: 1 July 2018
.... Foraging Little auks Copepods Diving Climate change Feeding mechanism Trophic flow and food web architecture are conditioned by prey capture techniques ( Garvey and Whiles, 2016 ). In the marine environment, many predators use raptorial feeding, seizing prey items individually, yet the largest...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (11): jeb166033.
Published: 12 June 2018
... foraging mechanisms and extremely large body size to exploit unique ecological niches in the ocean. Scaling Odontocetes Mysticetes Diving Filter feeding Echolocation Researchers have long recognized the importance of body size in biology. The influence of scale is omnipresent throughout...
Journal Articles
Journal Articles
J Exp Biol (2017) 220 (10): 1875–1881.
Published: 15 May 2017
... its validity during diving, in diving endotherms. Here, we simultaneously deployed accelerometers and heart rate loggers in a wild population of European shags ( Phalacrocorax aristotelis ). Existing calibration relationships were then used to make behaviour-specific estimates of energy expenditure...
Includes: Supplementary data
Journal Articles
Journal Articles
J Exp Biol (2016) 219 (22): 3616–3625.
Published: 15 November 2016
...Cassondra L. Williams; James W. Hicks ABSTRACT Mammals and birds maintain high arterial partial pressure of oxygen ( P O 2 ) values in order to preserve near-complete hemoglobin (Hb) oxygen (O 2 ) saturation. In diving mammals and birds, arterial O 2 follows a primarily monotonic decline...
Includes: Supplementary data
Journal Articles
Journal Articles
J Exp Biol (2015) 218 (13): 2116–2123.
Published: 1 July 2015
... shearwaters combining chick feeding and self-maintenance, bimodal foraging trip durations optimise feeding rates. Foraging strategy Puffinus puffinus Bio-logging GPS Diving Resource allocation between parents and their offspring during reproduction is a central issue in life-history theory...
Includes: Supplementary data
Journal Articles
J Exp Biol (2014) 217 (13): 2331–2337.
Published: 1 July 2014
... of Biologists Ltd 2014 Endothermy Dermochelys coriacea Jellyfish Diving Reptile Specific dynamic action Leatherback turtles, Dermochelys coriacea (Vandelli 1761), forage on gelatinous zooplankton in temperate waters of the North Atlantic Ocean during the summer and autumn ( James et al...
Journal Articles
J Exp Biol (2014) 217 (7): 1154–1166.
Published: 1 April 2014
...Colby Moore; Michael Moore; Stephen Trumble; Misty Niemeyer; Betty Lentell; William McLellan; Alexander Costidis; Andreas Fahlman In 1940, Scholander suggested that stiffened upper airways remained open and received air from highly compressible alveoli during marine mammal diving. There are few...
Journal Articles
J Exp Biol (2013) 216 (24): 4639–4646.
Published: 15 December 2013
... to the larynx. Toothed cetaceans (Odontoceti) are capable of producing sounds at depth, either for locating prey or for communication. It has been suggested that during dives, air from the lungs and upper respiratory tract can be moved to the vestibular and nasal cavities to permit sound generation to continue...