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Integrative and Comparative Biology Advance Access published online on July 29, 2009
Integrative and Comparative Biology, doi:10.1093/icb/icp071
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© The Author 2009. Published by Oxford University Press on behalf of the Society for Integrative and Comparative Biology. All rights reserved. For permissions please email: journals.permissions@oxfordjournals.org.

Cichlid genomics and phenotypic diversity in a comparative context

C. Darrin Hulsey1,*
* Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN, 37996, USA

Correspondence: 1E-mail: chulsey{at}utk.edu

Cichlid fishes provide an excellent natural system for integrating studies of genomics and adaptive radiation. Cichlids are unique in comprising a substantial fraction of all vertebrate species, possessing unique jaw structures, displaying an exceptional range of breeding systems, and exhibiting rampant phenotypic convergence. The rate of divergence in cichlid jaws, teeth, color patterns, visual systems, reproductive biology, and mating behaviors is unparalleled among vertebrates. I discuss ways rapid divergence in cichlids and other adaptive radiations make understanding the genomic basis of adaptive divergence more tractable. Then, I briefly overview some major findings and insights into vertebrate adaptation that have been gained through cichlid genetic studies. Finally, I discuss the extensive evolutionary replication provided by cichlid adaptive radiations and their potential for studies of genotype-to-phenotype mapping.


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