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MedLine Citation:
PMID:  23550769     Owner:  NLM     Status:  Publisher    
Differences in rhythmicity (relative variance in cycle period) among mammal, fish, and lizard feeding systems have been hypothesized to be associated with differences in their sensorimotor control systems. We tested this hypothesis by examining whether the locomotion of tachymetabolic tetrapods (birds and mammals) is more rhythmic than that of bradymetabolic tetrapods (lizards, alligators, turtles, salamanders). Species averages of intraindividual coefficients of variation in cycle period were compared while controlling for gait and substrate. Variance in locomotor cycle periods is significantly lower in tachymetabolic than in bradymetabolic animals for datasets that include treadmill locomotion, non-treadmill locomotion, or both. When phylogenetic relationships are taken into account the pooled analyses remain significant, whereas the non-treadmill and the treadmill analyses become nonsignificant. The co-occurrence of relatively high rhythmicity in both feeding and locomotor systems of tachymetabolic tetrapods suggests that the anatomical substrate of rhythmicity is in the motor control system, not in the musculoskeletal components.
Callum F Ross; Richard W Blob; David R Carrier; Monica A Daley; Stephen M Deban; Brigitte Demes; Janaya L Gripper; Jose Iriarte-Diaz; Brandon M Kilbourne; Tobias Landberg; John D Polk; Nadja Schilling; Bieke Vanhooydonck
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-20
Journal Detail:
Title:  Evolution; international journal of organic evolution     Volume:  67     ISSN:  1558-5646     ISO Abbreviation:  Evolution     Publication Date:  2013 Apr 
Date Detail:
Created Date:  2013-4-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0373224     Medline TA:  Evolution     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1209-1217     Citation Subset:  -    
Copyright Information:
© 2012 The Author(s). Evolution© 2012 The Society for the Study of Evolution.
Organismal Biology & Anatomy, University of Chicago, 1027 East 57th Street, Chicago, Illinois 60637 E-mail: Biological Sciences, 342 Long Hall, Clemson University, Clemson, South Carolina 29634 Department of Biology, 201 South Biology Building, University of Utah, Salt Lake City, Utah 84112 Structure and Motion Laboratory, The Royal Veterinary College, University of London, Hawkshead Lane, Hatfield, Hertfordshire AL9 7TA, United Kingdom Department of Integrative Biology, University of South Florida, 4202 East Fowler Avenue SCA 110, Tampa, Florida 33620 Anatomical Sciences, Stony Brook University, Stony Brook, New York 11794-8081 The College, University of Chicago, Chicago, Illinois 60637 Organismal Biology & Anatomy, University of Chicago, 1027 East 57th Street, Chicago, Illinois 60637 Institut für Spezielle Zoologie und Evolutionsbiologie mit Phyletischem Museum, Friedrich-Schiller-Universität Jena, Erbertstr., 07743, Jena, Germany Biology Department, Boston University, Boston, Massachusetts 02215 Department of Anthropology, University of Illinois at Urbana-Champaign, 607 S Mathews Avenue, M/C 148, Urbana, Illinois 61801 Institute of Systematic Zoology and Evolutionary Biology, Friedrich-Schiller-Universit, Jena, Germany Department of Biology, University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium.
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