New NIH Award to the CRE!

Our research proposal to use proteomics to investigate sperm modification within the female reproductive tract of Drosophila melanogaster was just funded by an R21 grant from the National Institutes of Health (Male Reproductive Health Program, Fertility and Infertility Branch). This project complements the evolutionary research funded by our recent NSF, which explores evolutionary divergence and reproductive isolation consequences of these sperm-female interactions. This work is a collaboration between CRE members Steve Dorus, Scott Pitnick, John Belote and PhD student Emma Whittington, along with Mariana Wolfner of Cornell University. We will soon be searching for a Postdoctoral Fellow to join this research program. Please contact us if you are interested.

CRE Postdoctoral Fellowship available!

A Postdoctoral Fellowship is available for our NSF-funded investigation of sperm modification within the female reproductive tract. Molecular interactions between sperm and the female reproductive tract evolve across closely related species and may contribute to reproductive isolation. Sperm undergo numerous modifications as they move through the male and female reproductive tracts, although the nature of these interactions and their importance for fertilization success is not well understood. This project will characterize these changes at the molecular level, within closely-related species of fruit fly, as well as following hybrid inseminations, to understand their evolutionary history and influence on sperm survival and fertilization success. If you are interested in the position, get more information here

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NSF 2017 postdoctoral advert

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National Science Foundation gives the CRE an anxiously-awaited thumbs up

Our research proposal to use proteomics to investigate sperm modification within the female reproductive tract, along with its evolutionary divergence and reproductive isolation consequences, is recommended for funding by the NSF. This work is a collaboration between CRE members Steve Dorus, Scott Pitnick, John Belote and PhD student Emma Whittington, along with Mariana Wolfner of Cornell University and Tim Karr of the Kyoto Institute of Technology.

Brian Gress, PhD student extraordinaire, successfully defends his dissertation!

Brian’s research combined investigations from the field, laboratory and artificial pastures in the greenhouse on the LSC rooftop to explore the evolutionary maintenance of alternative male reproductive tactics in the yellow dung fly, Scathophaga stercoararia. We wish Brian great success as he begins a killer postdoctoral fellowship at UC, Davis with Frank Zalom of the Department of Entomology and Nematology.

CRE Investigators Publish study in Nature

Collaborative research by CRE members Pitnick, Belote and Puniamoorthy, together with CRE alumni Lüpold, Manier and othersreveal that the giant sperm some Drosophila may be the most extreme ornaments in all of nature and demonstrate how their existence challenges theories explaining the intensity of sexual selection, mating-system evolution and the fundamental nature of sex differences. The study also combined quantitative genetic analyses of interacting sex-specific traits in D. melanogaster with comparative analyses of the condition dependence of male and female reproductive potential across species with varying ornament size to reveal complex dynamics that may underlie sperm-length evolution.