Cardiovascular mechanisms during thermoregulation in reptiles

Seebacher, F. and Franklin, C. E. (2004) Cardiovascular mechanisms during thermoregulation in reptiles. International Congress Series, 1275 242-249. doi:10.1016/j.ics.2004.08.050

Author Seebacher, F.
Franklin, C. E.
Title Cardiovascular mechanisms during thermoregulation in reptiles
Journal name International Congress Series   Check publisher's open access policy
ISSN 0531-5131
ISBN 0-444-51763-4
Publication date 2004-12-01
Sub-type Article (original research)
DOI 10.1016/j.ics.2004.08.050
Volume 1275
Start page 242
End page 249
Total pages 8
Editor S. Morris
A. Vosloo
Place of publication Amsterdam, The Netherlands
Publisher Excerpta Medica Foundation
Language eng
Subject C1
270603 Animal Physiology - Systems
780105 Biological sciences
Formatted abstract
Vertebrates may control heat transfer with the environment by differentially changing heart rate and blood flow during heating and cooling. In reptiles, the ecological benefit of this physiological thermoregulation is a pronounced increase in the time spent at a "high" body temperature during the day. During heating and cooling in a lizard, the cardiovascular system is controlled by prostaglandins and to a lesser extent by the autonomic nervous system. There are, however, pronounced phylogenetic differences in cardiovascular control mechanisms of thermoregulating reptiles. Additionally, the characteristic heart rate "hysteresis" pattern also occurs in a crustacean, pointing towards parallel evolution of control mechanisms alongside increasing vascularisation.
© 2004 Elsevier B.V. All rights reserved.
Keyword Autonomic nervous system
Blood pressure
Heart rate
Heat transfer
Nitric oxide
Q-Index Code C1

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Created: Wed, 15 Aug 2007, 13:22:58 EST