1-11 of 11
Keywords: harbour seal
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 (2022) 225 (8): jeb243766.
Published: 28 April 2022
... tested which mechanism is used to escape from acoustic allometry by probing vocal tract allometry in a proven mammalian vocal learner, the harbour seal ( Phoca vitulina ). We tested whether vocal tract structures and body size scale allometrically in 68 young individuals. We found that both body length...
Includes: Supplementary data
Journal Articles
J Exp Biol (2014) 217 (13): 2239–2243.
Published: 1 July 2014
...-power accelerometers mounted on the head. To test this notion, a harbour seal ( Phoca vitulina ) was trained to wear an OpenTag (sampling at 200 or 333 Hz with ±2 or ±16 g clipping) on its head while catching fish prey in front of four underwater digital high-speed video cameras. We show that both...
Includes: Supplementary data
Journal Articles
J Exp Biol (2011) 214 (11): 1922–1930.
Published: 1 June 2011
...Sven Wieskotten; Björn Mauck; Lars Miersch; Guido Dehnhardt; Wolf Hanke SUMMARY Harbour seals can use their mystacial vibrissae to detect and track hydrodynamic wakes. We investigated the ability of a harbour seal to discriminate objects of different size or shape by their hydrodynamic signature...
Journal Articles
J Exp Biol (2010) 213 (21): 3734–3740.
Published: 1 November 2010
...S. Wieskotten; G. Dehnhardt; B. Mauck; L. Miersch; W. Hanke SUMMARY The mystacial vibrissae of harbour seals ( Phoca vitulina ) constitute a highly sensitive hydrodynamic receptor system enabling the seals to detect and follow hydrodynamic trails. In the wild, hydrodynamic trails, as generated...
Journal Articles
J Exp Biol (2010) 213 (13): 2194–2200.
Published: 1 July 2010
...S. Wieskotten; G. Dehnhardt; B. Mauck; L. Miersch; W. Hanke SUMMARY Harbour seals can use their vibrissal system to detect and follow hydrodynamic trails left by moving objects. In this study we determined the maximum time after which a harbour seal could indicate the moving direction...
Journal Articles
J Exp Biol (2008) 211 (20): 3315–3322.
Published: 15 October 2008
...Frederike D. Hanke; Ronald H. H. Kröger; Ursula Siebert; Guido Dehnhardt SUMMARY Previous photorefractive results from harbour seals indicated the presence of a multifocal lens. This was surprising because the evolution of multifocal lenses has served to compensate for chromatic aberration...
Journal Articles
J Exp Biol (2007) 210 (5): 781–787.
Published: 1 March 2007
... a harbour seal to swim predefined courses, thus generating biogenic hydrodynamic trails. The structure of these trails was measured using Particle Image Velocimetry. A second seal was trained to search for and track the trail after the trail-generating seal had left the water. Our trail-following seal...
Journal Articles
J Exp Biol (2004) 207 (22): 3891–3898.
Published: 15 October 2004
.... This study focused on the ontogenetic changes in cardiac responses to respiration in quietly resting, pre-weaned harbour seal pups ( Phoca vitulina ). During periods of quiet rest, breathing became episodic,eupnoea interspersed with periods of apnoea. Little change was observed in respiration (∼35 breaths...
Journal Articles
In collection:
Cardiology articles
J Exp Biol (2002) 205 (23): 3757–3765.
Published: 1 December 2002
...Nicole M. Elliott; Russel D. Andrews; David R. Jones SUMMARY While diving, harbour seals ( Phoca vitulina ) manage their oxygen stores through cardiovascular adjustments, including bradycardia, a concurrent reduction in cardiac output, and peripheral vasoconstriction. At the surface,post-dive...
Journal Articles
J Exp Biol (2001) 204 (22): 3877–3885.
Published: 15 November 2001
... metabolism during diving. This alteration of the dive response may increase the metabolic efficiency of diving. dive response heart rate laser-Doppler muscle blood flow myoglobin near-infrared spectroscopy oxygen store harbour seal Phoca vitulina. Three surface ECG electrodes were...
Journal Articles
J Exp Biol (2001) 204 (22): 3993–4004.
Published: 15 November 2001
...Christian Jørgensen; Christian Lydersen; Ole Brix; Kit M. Kovacs SUMMARY This study investigated physiological and behavioural aspects of diving development in pups of the harbour seal Phoca vitulina . Behavioural data (4280 h, 6027 dives) from time/depth recorders ( N =13) deployed on pups aged 0...