Document Detail

Preliminary investigation of morphological differences between ten breeds of horses suggests selection for paedomorphosis.
MedLine Citation:
PMID:  18569216     Owner:  NLM     Status:  MEDLINE    
Paedomorphosis is the retention of juvenile morphology at maturity and is important in generating evolutionary change in domestic species and species in the wild. When comparing dogs with the wolf, this preliminary study saw paedomorphosis in their physical and behavioral traits (Goodwin, Bradshaw, & Wickens, 1997). This preliminary study compared morphological characteristics of 10 breeds from northern regions (Shetland ponies) and southern regions (Arabians) with the Exmoor pony. Twenty-three respondents from the United Kingdom and Australia rated the breeds for 7 physical traits. As evidenced by low standard deviations, the respondents demonstrated a high degree of agreement. The study ranked breeds from the most similar (Highland pony) to the least similar (Arabian) to the Exmoor pony. The least similar breeds had physical traits suggestive of paedomorphosis: small heads, long legs, and a low head-to-body ratio. This preliminary study suggests that morphological, behavioral, and physiological differences between the breeds-plus morphometric comparisons of extant breeds and faunal remains of predomestication horses-warrant further study.
Deborah Goodwin; Marsha Levine; Paul D McGreevy
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of applied animal welfare science : JAAWS     Volume:  11     ISSN:  1532-7604     ISO Abbreviation:  J Appl Anim Welf Sci     Publication Date:  2008  
Date Detail:
Created Date:  2008-06-23     Completed Date:  2008-11-03     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  9804404     Medline TA:  J Appl Anim Welf Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  204-12     Citation Subset:  IM    
School of Psychology, University of Southampton, Southampton, United Kingdom.
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MeSH Terms
Ear / anatomy & histology
Eye / anatomy & histology
Head / anatomy & histology
Horses / anatomy & histology*,  classification,  genetics*,  growth & development
Selection, Genetic*
Species Specificity

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