Document Detail

On the Relationship between Ontogenetic and Static Allometry.
MedLine Citation:
PMID:  23348774     Owner:  NLM     Status:  In-Data-Review    
Abstract Ontogenetic and static allometries describe how a character changes in size when the size of the organism changes during ontogeny and among individuals measured at the same developmental stage, respectively. Understanding the relationship between these two types of allometry is crucial to understanding the evolution of allometry and, more generally, the evolution of shape. However, the effects of ontogenetic allometry on static allometry remain largely unexplored. Here, we first show analytically how individual variation in ontogenetic allometry and body size affect static allometry. Using two longitudinal data sets on ontogenetic and static allometry, we then estimate variances and covariances for the different parameters of the ontogenetic allometry defined in our model and assess their relative contribution to the static allometric slope. The mean ontogenetic allometry is the main parameter that determines the static allometric slope, while the covariance between the ontogenetic allometric slope and body size generates most of the discrepancies between ontogenetic and static allometry. These results suggest that the apparent evolutionary stasis of the static allometric slope is not generated by internal (developmental) constraints but more likely results from external constraints imposed by selection.
Christophe Pélabon; Geir H Bolstad; Camilla K Egset; James M Cheverud; Mihaela Pavlicev; Gunilla Rosenqvist
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Publication Detail:
Type:  Journal Article     Date:  2013-01-14
Journal Detail:
Title:  The American naturalist     Volume:  181     ISSN:  1537-5323     ISO Abbreviation:  Am. Nat.     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984688R     Medline TA:  Am Nat     Country:  United States    
Other Details:
Languages:  eng     Pagination:  195-212     Citation Subset:  IM    
Centre for Conservation Biology, Department of Biology, University of Science and Technology (NTNU), 7491 Trondheim, Norway.
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