A 3 years PhD grant is available at the Laboratoire «~Venins et Activités biologiques~» (Laboratory Venons & biological activities) of the University of Albi. The aim of the PhD research project is to explore the host-parasite relationships between the mite Varroa jacobsoni and the domestic bee, Apis mellifera. It has been observed that some populations of bees are less affected by the mites than others. However, the mechanisms behind this difference are still a matter of debate. In this context, the PhD student will explore the information used by the mites to recognize their host, the variability of this information between populations and the link between this variation and the genetic structure of these populations. The ideal candidate will have a good command of the theory on host-parasite relationships; will be at ease with molecular biology techniques and have a basic understanding of techniques used in chemical ecology. If interested, send a CV and a cover letter to: Dr A. Vétillard, EA 4357 Venins et activités biologiques, University of Albi ([ mailto:avetilla@univ-jfc.fr ]avetilla@univ-jfc.fr) or Prof J-L. Hemptinne, UMR 5174 Evolution et Diversité biologique, University of Toulouse ([ mailto:jean-louis.hemptinne@educagri.fr]jean-louis.hemptinne@educagri.fr). Deadline for applications: 15 December 2012; research programme starting in January 2013.