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Keywords: Phoca vitulina
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Journal Articles
J Exp Biol (2010) 213 (9): 1536–1548.
Published: 1 May 2010
... in phocid seals ( Halichoerus grypus and Phoca vitulina ). We compared behavioural responses of seals to playbacks of sounds based on a model of sensory unpleasantness for humans, sounds from acoustic deterrent devices and sounds with assumed neutral properties in different contexts of food motivation...
Journal Articles
J Exp Biol (2008) 211 (20): 3315–3322.
Published: 15 October 2008
... cannot be considered to be an adaptation to the multifocal optical system of the eye. harbour seal Phoca vitulina lens multifocal The optical function of aquatic eyes can largely be understood by studying the optics of the lens because, in most cases, the lens is the dominant refractive...
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
J Exp Biol (2003) 206 (22): 4105–4111.
Published: 15 November 2003
.... The objective of this study was to reexamine the fiber type distribution throughout the primary locomotory muscles of the harbor seal Phoca vitulina . Results from immunohistochemical (IHC) fiber typing indicated that harbor seal swimming muscles (the epaxial muscles) are composed of 47.4% type I (slow twitch...
Journal Articles
J Exp Biol (2003) 206 (22): 4139–4154.
Published: 15 November 2003
... ( Phoca vitulina ). Samples of heart,liver, kidney, stomach and small intestine were taken from 10 freshly killed harbor seals and fixed in glutaraldehyde for transmission electron microscopy or frozen in liquid nitrogen for enzymatic analysis. Samples from dogs and rats were used for comparison. Within...
Journal Articles
J Exp Biol (2003) 206 (10): 1727–1738.
Published: 15 May 2003
... in juvenile harbor seals ( Phoca vitulina ). Physiol. Zool. 68 , 290 -315. Hart, J. S. and Irving, I. ( 1959 ). The energetics of harbor seals in air and in water with special considerations of seasonal changes. Can. J. Zool. 37 , 447 -457. Hind, A. T. and Gurney, W. S. C. ( 1998...
Journal 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): 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...