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Dr. Steven Ramm

Department of Evolutionary Biology
Morgenbreede 45, 33615 Bielefeld
Office: VHF-215
Phone: +49 (0)521 106 2719+49 (0)521 106 2719
email: steven.ramm"at"uni-bielefeld.de
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Molecular Human Reproduction Special Issue

Research interests

I am an evolutionary biologist broadly interested in bridging organismal and molecular perspectives on adaptation. I am especially interested in studying how traits fundamental to male fertility evolve, to test the working hypothesis that sexual selection has been a major factor during their evolution.[read more]

Current projects

My current research programme aims to understand selective forces acting on ejaculate traits and our main model system is a group of simultaneously hermaphroditic flatworms belonging to the genus Macrostomum. These flatworms exhibit wide diversity in reproductive morphologies and behaviour, and are an excellent model to study sperm and seminal fluid function in vivo owing to their small size, transparency and the availability of various molecular tools and techniques. We are also conducting related projects in snails, bushcrickets and flies. [read more]

CV

Education

1999–2002 B.Sc. (Hons), Class I, Genetics, University College London, UK
2002–2006 Ph.D., University of Liverpool, UK

Employment

2006–2009 Postdoc, Mammalian Behaviour and Evolution Group, University of Liverpool, UK
2009 HFSP Short-Term Fellow, Institute of Zoology, University of Innsbruck, Austria
2010–2012 Marie Curie Intra-European Fellow, Zoological Institute, University of Basel, Switzerland
2012– Research Associate, Evolutionary Biology, Bielefeld University, Germany

Publications

For a full list click here.

Ramm SA, Edward DA, Claydon AJ, Hammond DE, Brownridge P, Hurst JL, Beynon RJ, Stockley P (2015) Sperm competition risk drives plasticity in seminal fluid composition. BMC Biology 13: 87.

Ramm SA, Schlatter A, Poirier M, Schärer L (2015) Hypodermic self-insemination as a reproductive assurance strategy. Proceedings of the Royal Society B 282: 20150660.

Ramm SA, Schärer L, Ehmcke J, Wistuba J (2014) Sperm competition and the evolution of spermatogenesis. Molecular Human Reproduction 20: 1169–1179.

Schärer L, Janicke T, Ramm SA (2014) Sexual conflict in hermaphrodites. Cold Spring Harbor Perspectives in Biology 7: a017509.

Ramm SA, Schärer L (2014) The evolutionary ecology of testicular function: size isn't everything. Biological Reviews 89: 874–888.