Document Detail


Convergent evolution as a generator of phenotypic diversity in threespine stickleback.
MedLine Citation:
PMID:  23550768     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Convergent evolution, in which populations produce similar phenotypes in response to similar selection pressure, is strong evidence for the role of natural selection in shaping biological diversity. In some cases, closely related populations can produce functionally similar but phenotypically divergence forms in response to selection. Functional convergence with morphological divergence has been observed in laboratory selection experiments and computer simulations, but while potentially common, is rarely recognized in nature. Here, we present data from the North Pacific threespine stickleback radiation showing that ecologically and functionally similar, but morphologically divergent phenotypes rapidly evolved when an ancestral population colonized freshwater benthic habitats in parallel. In addition, we show that in this system, functional convergence substantially increases morphospace occupation relative to ancestral phenotypes, which suggests that convergent evolution may, paradoxically, be an important and previously underappreciated source of morphological diversity.
Authors:
Matthew D McGee; Peter C Wainwright
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Publication Detail:
Type:  Journal Article     Date:  2013-01-17
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:  2013-04-04     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0373224     Medline TA:  Evolution     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1204-8     Citation Subset:  IM    
Copyright Information:
© 2013 The Author(s). Evolution© 2013 The Society for the Study of Evolution.
Affiliation:
Department of Evolution and Ecology, University of California, Davis, One Shields Avenue, Davis, California 95616 E-mail: mcgee.matthew@gmail.com.
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