PhD Position in Evolutionary Genetics, Mainz, Germany We are recruiting a highly motivated PhD candidate to study how fecundity evolves and is genetically controlled in the Colorado potato beetle (Leptinotarsa decemlineata), a recently evolved agricultural pest. The position is embedded in the DFG funded GenEvo research training group environment and supervised by Prof. Shuqing Xu . Project Most of pests have evolved high fecundity. However, the underlying molecular and genetic mechanisms remain largely unclear. Here, using Colorado potato beetle as a model system, we aim to: Identify genetic mechanisms controlling ovariole number and fecundity-related traits using established mapping populations. Characterize genetic regulations underlying the development of terminal filament cells using single-cell transcriptomics. Test whether horizontally transferred genes (HGT) in this species also shape the evolution of fecundity. Use evolutionary and population genomics to identify signatures of selection on fecundity in natural populations. The goal is to understand cellular and regulatory mechanisms underlying the evolution of fecundity in a real-world pest. Requirements Master’s degree (by start date) in Biology, Evolutionary Biology, Genetics/Genomics, Bioinformatics or related field Strong interest in evolution, genomics, and cell biology Basic experience in R or another programming language; prior experience with NGS data, single-cell, or cell biology is a plus Good English communication skills; curiosity, independence, and enjoyment of teamwork More details about the GenEvo training program and its benefits can be found here: https://www.genevo-rtg.de/training How to apply Please send one PDF including: Short motivation letter (max. 1 page) CV and transcripts/degree certificates Contact details of 2 referees to shuqing.xu@uni-mainz.de with subject line “PhD application – CPB fecundity – YourName”. Applications will be evaluated on a rolling basis until the position is filled. Prof. Dr. Shuqing Xu Institute of Organismic and Molecular Evolution (IomE) Johannes Gutenberg University Mainz Biozentrum I Hanns-Dieter-Hüsch-Weg 15 D-55128 Mainz Germany Phone: +49 6131 39 26907 E-mail: shuqing.xu@uni-mainz.de Shuqing Xu (to subscribe/unsubscribe the EvolDir send mail to golding@mcmaster.ca)