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In collection:Comparative biomechanics of movement
J Exp Biol (2021) 224 (11): jeb242240.
Published: 4 June 2021
... of their sole, such as living crocodylians, intermetatarsal mobility offers the potential for a continuum of reconfiguration within the foot itself. Alligator hindlimbs are capable of postural extremes from a belly sprawl to a high walk to sharp turns – how does the foot morphology dynamically accommodate...
Includes: Supplementary data
J Exp Biol (2019) 222 (7): jeb201079.
Published: 1 April 2019
.... and Wang , T. ( 2000 ). Effects of postprandial on arterial blood gases in the American alligator Alligator mississippiensis . J. Exp. Biol. 203 , 3117 - 3124 . Eme , J. and Crossley , D. A. ( 2015 ). Chronic hypercapnic incubation increases relative organ growth and reduces blood...
J Exp Biol (2012) 215 (23): 4217–4230.
Published: 1 December 2012
... on the face and body of crocodilians and documented related behaviors for an alligatorid ( Alligator mississippiensis ) and a crocodylid ( Crocodylus niloticus ). Each of the ISOs (roughly 4000 in A. mississippiensis and 9000 in C. niloticus ) was innervated by networks of afferents supplying multiple...
Includes: Multimedia, Supplementary data
J Exp Biol (2009) 212 (21): 3553–3563.
Published: 1 November 2009
... during diving in aquatic species. We eliminated R–L shunt in American alligators( Alligator mississippiensis ) by surgically occluding the left aorta(LAo; arising from right ventricle) upstream and downstream of the foramen of Panizza (FoP), and we tested the hypotheses that this removal of R–L shunt...
J Exp Biol (2008) 211 (10): 1565–1570.
Published: 15 May 2008
... to ventilation. HPV is an ancient and highly conserved response expressed in the respiratory organs of all vertebrates. However, the underlying mechanism and the role of the endothelium remain elusive. Isolated intrapulmonary arteries (internal diameter <346 μm) from the American alligator Alligator...
J Exp Biol (2008) 211 (7): 1141–1147.
Published: 1 April 2008
...T. J. Uriona; C. G. Farmer SUMMARY We used electromyography on juvenile American alligators to test the hypothesis that the following muscles, which are known to play a role in respiration, are recruited for aquatic locomotion: M. diaphragmaticus, M. ischiopubis, M. rectus abdominis, M...
J Exp Biol (2007) 210 (16): 2811–2818.
Published: 15 August 2007
...Frank E. Fish; Sandra A. Bostic; Anthony J. Nicastro; John T. Beneski SUMMARY Crocodilians, including the alligator ( Alligator mississippiensis ), perform a spinning maneuver to subdue and dismember prey. The spinning maneuver, which is referred to as the `death roll',involves rapid rotation about...
J Exp Biol (2006) 209 (21): 4313–4318.
Published: 1 November 2006
...T. J. Uriona; C. G. Farmer SUMMARY The importance of the diaphragmaticus muscle to vital capacity was investigated in juvenile American alligators by transection of this muscle. In both fasting and post-prandial animals a pneumotach was used to study vital capacity that was stimulated by either...
J Exp Biol (2005) 208 (16): 3047–3053.
Published: 15 August 2005
...T. J. Uriona; C. G. Farmer; J. Dazely; F. Clayton; J. Moore SUMMARY Esophageal structure and function were studied in juvenile American alligators ( Alligator mississippiensis ). The anatomy of alligators differs from humans in several important aspects: the crocodilian esophagus is more muscular...
J Exp Biol (2005) 208 (6): 993–1009.
Published: 15 March 2005
...Stephen M. Reilly; Jeffrey S. Willey; Audrone R. Biknevicius; Richard W. Blob SUMMARY Alligator hindlimbs show high torsional loads during terrestrial locomotion, in sharp contrast to the bending or axial compressive loads that predominate in animals that use parasagittal limb movements...
J Exp Biol (2003) 206 (23): 4327–4340.
Published: 1 December 2003
... to test how the activity patterns of hindlimb muscles in American alligators ( Alligator mississippiensis Daudin)differ between sprawling and more upright postures. Previous force platform analyses suggested that upright posture in alligators would require greater activation by hindlimb extensors...
J Exp Biol (2002) 205 (13): 1843–1851.
Published: 1 July 2002
...Douglas A. Syme; Kurt Gamperl; David R. Jones SUMMARY Alligators and other crocodilians have a cog-wheel valve located within the subpulmonary conus, and active closure of this valve during each heart beat can markedly and phasically increase resistance in the pulmonary outflow tract...
J Exp Biol (2000) 203 (20): 3117–3124.
Published: 15 October 2000
...). In chronically cannulated and undisturbed amphibians and reptiles, the pH changes in arterial blood are, nevertheless, reduced by a concomitant respiratory acidosis (increased caused by a relative hypoventilation). Alligators ( Alligator mississippiensis ) have been reported to exhibit exceptionally large...
J Exp Biol (1998) 201 (18): 2559–2574.
Published: 15 September 1998
... quantifies the sprawl and high walk kinematics of the alligator Alligator mississippiensis moving at different speeds on a treadmill and compares them with kinematic data available for other vertebrates. These data allow us to examine the effects of speed on crocodilian postures and to examine how...
J Exp Biol (1993) 176 (1): 247–270.
Published: 1 March 1993
...David R. Jones; Graham Shelton ABSTRACT Blood pressures have been recorded in the heart along with pressures and flow in the aortic arches of anaesthetized and awake alligators. Systemic blood pressures were significantly lower [5.22±0.57kPa ( N =3) versus 9.85±0.46kPa ( N =5)] and cardiac outputs...
J Exp Biol (1991) 158 (1): 539–564.
Published: 1 July 1991
...G. Shelton; D. R. Jones ABSTRACT Pressure recordings from the heart and major arteries of the alligator show that a conventional relationship exists between the left ventricle and the right aorta. Pressure gradients from ventricle to aorta during systole are very small. Right aortic blood flow...