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Faculty and Research

Faculty Member

JP Masly

J.P. Masly

Associate Professor, Biology Richards Hall 400-401 & 407 405-325-5611 Ph.D., Biology - University of Rochester, 2007


We are broadly interested in understanding how sexual selection shapes interactions between the sexes during mating, and how interspecific differences in neural architecture might contribute to reproductive isolation using Drosophila as a model. In particular, we study the genetic and developmental variation in male genital morphology, how females respond to this morphological variation, and the mechanisms that affect female reproductive behaviors.

Recent results from the lab suggest that Drosophila females adjust their reproductive output in response to variation in male genital morphology. We are currently investigating the evolution of species-specific nervous system architecture and function in the genitalia of each sex with the ultimate goal of understanding how these differences specify female behavioral and physiological responses during mating.

Selected Publications:

Frazee, S. R. and Masly, J. P. (2015) Multiple sexual selection pressures drive the rapid evolution of complex morphology in a male secondary genital structure. Ecology and Evolution 5 (19): 4437-4450. doi:10.1002/ece3.1721.

Smith B. N., Ghazhanfari, A. M., Bohm, R. A., Welch, W. P., Zhang, B., and Masly, J. P. (2015) A flippase-mediated GAL80/GAL4 intersectional resource for dissecting appendage development in Drosophila. G3: Genes|Genomes|Genetics 5: 2105-2112. doi:10.1534/g3.115.019810.

Tanaka, K. M., Hopfen, C., Herbert, M., Schlötterer, C., Stern, D. L., Masly, J. P., McGregor, A. P., and Nunes, M. D. S. (2015) Genetic architecture and functional characterization of genes underlying the rapid diversification of male external genitalia between Drosophila simulans and Drosophila mauritiana. Genetics 200 (1): 357-369. doi:10.1534/genetics.114.174045.

Masly, J. P. and Kamimura, Y. (2014) Asymmetric mismatch in strain-specific genital morphology causes increased harm to Drosophila females. Evolution 68 (8): 2401-2411. doi: 10.1111/evo.12436.

Masly, J. P. (2012) 170 years of "lock-and-key": Genital morphology and reproductive isolation. International Journal of Evolutionary Biology 2012: Article ID 247352, doi:

Masly, J. P., Dalton, J. E., Srivastava, S., Chen, L. and Arbeitman, M. N. (2011) The genetic basis of rapidly evolving male genital morphology in Drosophila. Genetics 189: 357-374.