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24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

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Daveu Romain

Team TiBoDi

Daveu Romain
© RD

PhD Student

 Oniris site de la Chantrerie, CS40706, 44307 Nantes, France
 team TiBoDi, building G2 2nd floor

Tel: 02 40 68 29 33

He joined BioEPAR within the TiBoDi group as a PhD student. His topic is entitled "Role of Midichloria mitochondrii, endosymbiotic bacterium of the tick Ixodes ricinus, in the physiology of its host".

He is supervised by Olivier Plantard and Davide Sassera from the University of Pavia (Italy), where he will be doing his second year of thesis.

Thesis subject: 

In the temperate regions of the northern hemisphere, ticks are the most important disease vectors. In Europe, the most widespread tick species is Ixodes ricinus. It transmits many pathogens, including those responsible for Lyme disease and tick-borne encephalitis. Vector control against ticks relies mainly on the use of acarids, but its applicability is limited for I. ricinus because of its wide ecological distribution and wide host range. Indeed, this species is capable of feeding on many vertebrates of both wild and domestic fauna. This tick species hosts an intracellular bacterium, Candidatus Midichloria mitochondrii, transmitted vertically with a prevalence of 100% in females in natural populations. M. mitochondrii is unique because of its ability to reside in host mitochondria, but its role in tick host physiology is still unknown. The thesis focuses on the role of Midichloria mitochondrii in the biology of Ixodes ricinus through experimental, molecular and bioinformatics approaches, with the aim of providing knowledge to develop a vector control method based on antisymbiotic control.

  • Daveu R., Hervet C., Sigrist L., Sassera D., Jex A., Labadie K., Aury J.-M., Plantard O., Rispe C. 2020. Sequence diversity and evolution of an iflavirus family associated with ticks. bioRxiv, 2020.2006.2002.129551.