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Behavioral Ecology Advance Access originally published online on October 4, 2009
Behavioral Ecology 2009 20(6):1376-1381; doi:10.1093/beheco/arp130
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© The Author 2009. Published by Oxford University Press on behalf of the International Society for Behavioral Ecology. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org

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Trait duplication by means of sensory bias

Rafael Lucas Rodríguez

Department of Biological Sciences, Lapham Hall, University of Wisconsin—Milwaukee, 3209 N. Maryland Avenue, Milwaukee, WI 53201-0413, USA

Address correspondence to R.L. Rodríguez. E-mail: rafa@uwm.edu.

Received 28 January 2009; revised 17 July 2009; accepted 29 August 2009.

Key words: origin of novelty, receiver bias, sensory exploitation.

The first 150 words of the full text of this article appear below.


   INTRODUCTION
 
Trait duplication has played an important role in the origin of species, higher taxonomic groups, and novel traits (West-Eberhard 2003Go; Carroll 2005Go; Lynch 2007Go; Leitch AR and Leitch IJ 2008Go; Mondragón-Palomino and Theiβen 2008Go). Trait duplication involves the duplication of body segments, body parts, genes, and even of whole genomes. These events can promote diversification and novelty by allowing previously evolved mechanisms to acquire novel functions, rather than requiring the machinery for those novel functions to be selected from scratch, mutation by mutation (West-Eberhard 2003Go; Carroll 2005Go; Lynch 2007Go; Des Marais and Rausher 2008Go). I suggest that a well-known mechanism in behavioral ecology—sensory bias—may foster a process resulting in trait duplication with important consequences for the diversification of mate preferences.

Sensory bias is a process in which preferences originate when responses that evolved in nonsexual contexts or as by-products of sensory . . . [Full Text of this Article]


   EVOLUTION AFTER CO-OPTION
 
Costly co-option
Constrained co-option
Synergistic co-option
Trait duplication

   WHY CONTEXT-DEPENDENCE IS LIKELY TO EVOLVE
 

   TESTING THE HYPOTHESES
 

   THREE CASE STUDIES
 

   CONCLUSION
 

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