Meeting Abstract

44-6  Friday, Jan. 5 09:15 - 09:30  The Genomic Architecture of a Key Innovation and Evolution of Dental Divergence in East African Cichlid Fishes HULSEY, CD*; MEYER, A; Univ. of Konstanz, Germany darrin.hulsey@uni-konstanz.de http://darrinhulsey.com

Using a hybrid mapping cross of two Lake Victoria cichlid fish species, we examined genomic regions associated with their dental diversity. A similar genomic region was found to be associated with the most variation in oral jaw tooth numbers in cichlids from both Lake Malawi and Lake Victoria. This same genomic region was also associated with variation in pharyngeal jaw tooth number. Highly similar correlations in tooth numbers on the two jaws in both our Victoria hybrid population and across the phylogenetic diversity of Malawi cichlids suggests teeth in haplochromine cichlids might generally coevolve according to their shared genetic basis.