1-20 of 44
Keywords: Buoyancy
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Articles
J Exp Biol (2024) 227 (3): jeb246522.
Published: 1 February 2024
... – the deepest ever observation of a fish species with a swim bladder. The buoyancy provided by an oxygen-filled swim bladder at 74.4 MPa pressure was estimated to be 0.164 N, at a theoretical energy cost of 20 kJ, 200 times less than the cost of equivalent lipid buoyancy. During normal metabolism, 192 days...
Includes: Supplementary data
Journal Articles
J Exp Biol (2023) 226 (14): jeb246059.
Published: 24 July 2023
... in 5 s intervals from the rate of gliding descent. We modeled body density across depth in each dive, revealing high tissue densities and diving lung volumes (DLVs). DLV increased with dive depth in four individuals. We used the buoyancy calculated from dive-specific body-density models and drag...
Journal Articles
In collection:
Neuroethology
J Exp Biol (2023) 226 (11): jeb245635.
Published: 5 June 2023
...Alexandra Venuto; Stacey Thibodeau-Beganny; Josef G. Trapani; Timothy Erickson ABSTRACT Larval zebrafish achieve neutral buoyancy by swimming up to the surface and taking in air through their mouths to inflate their swim bladders. We define this behavior as ‘surfacing’. Little is known about...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (2): jeb235507.
Published: 26 January 2021
.... A. , Bowen , W. D. and Iverson , S. J. ( 2000 ). Seasonal changes in buoyancy and diving behaviour of adult grey seals . J. Exp. Biol. 203 , 2323 - 2330 . Burns , J. M. , Costa , D. P. , Frost , K. and Harvey , J. T. ( 2005 ). Development of body oxygen stores...
Includes: Supplementary data
Journal Articles
Journal Articles
J Exp Biol (2017) 220 (23): 4463–4470.
Published: 1 December 2017
... for the brood weight on the anterior portion of their body. For fishes with a compartmentalized swim bladder, gas distribution between the chambers may aid in regulating buoyancy during brooding. To test this hypothesis, we took radiographs of Astatotilapia burtoni to compare the swim bladder morphology...
Journal Articles
J Exp Biol (2017) 220 (4): 597–606.
Published: 15 February 2017
... and activity by controlling their net buoyancy; however, few buoyancy studies have been conducted on physostomous fish in the wild. We deployed accelerometers on free-ranging channel catfish, Ictalurus punctatus , in both lentic and lotic environments to quantify their swimming activity, and to determine...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (16): 2458–2468.
Published: 15 August 2016
... bottlenose whales with data loggers that recorded depth, 3-axis acceleration and speed either with a fly-wheel or from change of depth corrected by pitch angle. We fitted measured values of the change in speed during 5 s descent and ascent glides to a hydrodynamic model of drag and buoyancy forces using...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (5): 615–625.
Published: 1 March 2016
..., working hypotheses: (1) the urea-based osmoregulatory strategy of chondrichthyans might conflict with the interactive effects of low temperature and high pressure on protein and membrane function at great depth; (2) the reliance on lipid accumulation for buoyancy in chondrichthyans has a unique energetic...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (21): 3478–3486.
Published: 1 November 2015
... Anisops deanei does exchange gases with the water. Our results indicate that approximately 20% of O 2 consumed during a dive is obtained directly from the water. Oxygen from the water complements that released from the haemoglobin, extending the period of near-neutral buoyancy and increasing dive duration...
Includes: Supplementary data
Journal Articles
J Exp Biol (2015) 218 (7): 1099–1110.
Published: 1 April 2015
... for this species-rich group to occupy freshwater systems. Using hydromechanical modeling, we show that occurrence in fresh water results in a two- to three-fold increase in negative buoyancy for sharks and rays. This carries the energetic cost of lift production and results in increased buoyancy-dependent...
Includes: Supplementary data
Journal Articles
Journal Articles
J Exp Biol (2012) 215 (21): 3685–3692.
Published: 1 November 2012
... efficiency of marine animals is primarily determined by their physiological and mechanical characteristics. This efficiency may be apparent via examination of biomechanical performance (e.g. stroke frequency and amplitude, change in buoyancy or body angle, etc.), which itself may be modulated according...
Includes: Supplementary data
Journal Articles
J Exp Biol (2012) 215 (20): 3622–3630.
Published: 15 October 2012
... density of divers, which changes with body condition, determines the apparent weight (buoyancy) of divers, which may affect round-trip cost-of-transport (COT) between the surface and depth. We evaluated alternative predictions from external-work and actuator-disc theory of how non-neutral buoyancy affects...
Includes: Supplementary data
Journal Articles
J Exp Biol (2011) 214 (17): 2962–2972.
Published: 1 September 2011
...Matthew R. Stoyek; Frank M. Smith; Roger P. Croll SUMMARY Many teleosts use gas-filled swimbladders to control buoyancy and influence three-dimensional orientation (pitch and roll). However, swimbladder volume, and its contributions to these functions, varies with depth-related pressure according...
Includes: Supplementary data
Journal Articles
Journal Articles
J Exp Biol (2010) 213 (14): 2536–2546.
Published: 15 July 2010
...Tristan C. Dumbarton; Matthew Stoyek; Roger P. Croll; Frank M. Smith SUMMARY Many teleosts actively regulate buoyancy by adjusting gas volume in the swimbladder. In physostomous fishes such as the zebrafish, a connection is maintained between the swimbladder and the oesophagus via the pneumatic...
Journal Articles
J Exp Biol (2008) 211 (24): 3790–3799.
Published: 15 December 2008
...Philip G. D. Matthews; Roger S. Seymour SUMMARY Unlike all other diving insects, backswimmers of the genus Anisops can exploit the pelagic zone by temporarily achieving near-neutral buoyancy during the course of a dive. They begin a dive positively buoyant due to the large volume of air carried...
Journal Articles
Journal Articles
J Exp Biol (2006) 209 (17): 3269–3280.
Published: 1 September 2006
...Yuuki Watanabe; Eugene A. Baranov; Katsufumi Sato; Yasuhiko Naito; Nobuyuki Miyazaki SUMMARY Buoyancy is one of the primary external forces acting on air-breathing divers and it can affect their swimming energetics. Because the body composition of marine mammals (i.e. the relative amounts of lower...