Data from: Genetic architecture and functional characterization of genes underlying the rapid diversification of male external genitalia between Drosophila simulans and Drosophila mauritiana
Tanaka, Kentaro M., Oxford Brookes University
Hopfen, Corinna, Medical University of Vienna
Herbert, Matthew R., Oxford Brookes University
Schlötterer, Christian, Medical University of Vienna
Stern, David L., Howard Hughes Medical Institute
Masly, John P., University of Oklahoma
McGregor, Alistair P., Oxford Brookes University
Nunes, Maria D. S., Oxford Brookes University
Published Mar 13, 2016 on Dryad.
Cite this dataset
Tanaka, Kentaro M. et al. (2016). Data from: Genetic architecture and functional characterization of genes underlying the rapid diversification of male external genitalia between Drosophila simulans and Drosophila mauritiana [Dataset]. Dryad. https://doi.org/10.5061/dryad.c194d
Male sexual characters are often among the first traits to diverge between closely related species and identifying the genetic basis of such changes can contribute to our understanding of their evolutionary history. However, little is known about the genetic architecture or the specific genes underlying the evolution of male genitalia. The morphology of the claspers, posterior lobes and anal plates exhibit striking differences between Drosophila mauritiana and Drosophila simulans. Using QTL and introgression-based high-resolution mapping, we identified several small regions on chromosome arms 3L and 3R that contribute to differences in these traits. However, we found that the loci underlying the evolution of clasper differences between these two species are independent from those that contribute to posterior lobe and anal plate divergence. Furthermore, while most of the loci affect each trait in the same direction and act additively, we also found evidence for epistasis between loci for clasper bristle number. In addition, we conducted an RNAi screen in D. melanogaster to investigate if positional and expression candidate genes located on chromosome 3L, are also involved in genital development. We found that six of these genes, including components of Wnt signaling and male-specific lethal 3 (msl3), regulate the development of genital traits consistent with the effects of the introgressed regions where they are located and that thus represent promising candidate genes for the evolution these traits.
Recombination breakpoints in the 3rd chromosome introgression lines
Recombination breakpoints calculated using the MSG pipeline (Andolfatto et al. 2011). Coordinates in the gff files correspond to the D. simulans w501 genome (Hu et al. 2013). File names refer to chromosome and introgression ID.