About the Authors

Martina Tognazzo

Affiliation Institute of Integrative Biology, ETH Zürich, Zürich, Switzerland

Regula Schmid-Hempel

Affiliation Institute of Integrative Biology, ETH Zürich, Zürich, Switzerland

Paul Schmid-Hempel

psh@env.ethz.ch

Affiliation Institute of Integrative Biology, ETH Zürich, Zürich, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MT RSH PSH. Performed the experiments: MT RSH. Analyzed the data: MT RSH PSH. Contributed reagents/materials/analysis tools: MT RSH PSH. Wrote the paper: MT RSH PSH.