Document Detail

Performance constraints in strength events in dogs (Canis lupus familiaris).
MedLine Citation:
PMID:  20708658     Owner:  NLM     Status:  In-Process    
Ecological performance in animals is considered to be constrained by trade-offs between structural and physiological features. Some of the best anatomical and physiological data in support of this perspective are based on findings from canines, in which researchers have demonstrated skeletal shape trade-offs between running efficiency and strength. There has, however, actually been little examination of the link between these structural differences and relevant performance. In this paper I analyze the performance of six breeds of dogs in standardized weight pulling competitions. More brachycephalic shaped (broad headed) dogs are indeed significantly stronger than more dolichocephalic shaped (narrow headed) dogs even when controlling for body mass. Morphological trade-offs between power and running ability may be an important constraint on the evolution of canines and other terrestrial vertebrates.
William S Helton
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Publication Detail:
Type:  Journal Article     Date:  2010-08-11
Journal Detail:
Title:  Behavioural processes     Volume:  86     ISSN:  1872-8308     ISO Abbreviation:  Behav. Processes     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7703854     Medline TA:  Behav Processes     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  149-51     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier B.V. All rights reserved.
Department of Psychology, University of Canterbury, Private Bag 4800, Christchurch 8020, New Zealand.
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