GENETIC ANALYSIS OF MATE DISCRIMINATION IN DROSOPHILA SIMULANS
Version of Record online: 29 APR 2013
© 2013 The Author(s). Evolution © 2013 The Society for the Study of Evolution.
Volume 67, Issue 8, pages 2335–2347, August 2013
How to Cite
Chu, Y., Yang, E., Schinaman, J. M., Chahda, J. S. and Sousa-Neves, R. (2013), GENETIC ANALYSIS OF MATE DISCRIMINATION IN DROSOPHILA SIMULANS. Evolution, 67: 2335–2347. doi: 10.1111/evo.12115
- Issue online: 26 JUL 2013
- Version of Record online: 29 APR 2013
- Accepted manuscript online: 1 APR 2013 10:19AM EST
- Manuscript Accepted: 19 MAR 2013
- Manuscript Received: 2 SEP 2012
- mate choice;
Courtship is an elaborate behavior that conveys information about the identity of animal species and suitability of individual males as mates. In Drosophila, there is extensive evidence that females are capable of evaluating and comparing male courtships, and accepting or rejecting males as mates. These relatively simple responses minimize random sexual encounters involving subpar conspecific males and heterospecific males, and over generations can potentially select novel physical and behavioral traits. Despite its evolutionary and behavioral significance, little is still known about the genes involved in mating choice and how choices for novel males and females arise during evolution. Drosophila simulans and Drosophila sechellia are two recently diverged species of Drosophila in which females have a preference for conspecific males. Here we analyzed a total of 1748 F2 hybrid females between these two species and found a small number of dominant genes controlling the preference for D. simulans males. We also mapped two redundant X-linked loci of mating choice, Macho-XA and Macho-XB, and show that neither one is required for female attractiveness. Together, our results reveal part of the genetic architecture that allows D. simulans females to recognize, mate, and successfully generate progenies with D. simulans males.