Oliver Kaltz

Oliver Kaltz

Permanent researcher with the CNRS

oliver.kaltz (at) univ-montp2.fr

Evolutionary ecology of host-parasite interactions. Main focus: Understanding the role of spatial structure and environmental heterogeneity in shaping epidemiological dynamics as well as the evolution of host and parasite life-history traits (resistance, virulence, mode of transmission). Approach: experimental epidemiology and (co)evolution, using the protozoan Paramecium caudatum and its bacterial parasite Holospora undulata.

  • Russian invasion, part 2 2013/09/06EEC is currently hosting Alexey Potekhin and Irina Nekrasova, for a collaboration with Oliver Kaltz. Alexey and Irina are professors at the Dept. of Microbiology, Faculty of Biology and Soil Science of St Petersburg State University. Their research focuses on ciliate Paramecium as a model to study species divergence and mechanisms of speciation. Paramecium has opposite sexes ...
  • Superphage! 2013/09/03Alex Betts and EEC colleagues have published an article in Evolutionary Applications, investigating the possibility of « evolutionary training » of bacteriophages as a means to make them better at combatting bacterial infections. Betts, A., M. Vasse, O. Kaltz, and M. E. Hochberg. 2013. Back to the future: evolving bacteriophages to increase their effectiveness against the pathogen Pseudomonas ...
  • Better red than dead! 2013/09/03Alison Duncan, Andy Gonzalez (McGill University) and Oliver Kaltz have published an article in the Proceedings of the Royal Society (Series B), investigating the impact of the structure of environmental noise on experimental parasite epidemics. Duncan, A. B., A. Gonzalez, and O. Kaltz. 2013. Stochastic environmental fluctuations drive epidemiology in experimental host-parasite metapopulations. Proc. R. Soc. ...
  • A practical guide to measuring local adaptation 2013/09/03Oliver Kaltz and colleagues have published an article in Ecology Letters, formalising conceptual issue of local adaptation and comparing the statistical power of different experimental designs. Blanquart, F., O. Kaltz, S. L. Nuismer, and S. Gandon. 2013. A practical guide to measuring local adaptation. Ecology Letters 16:1195-1205. Patterns of local adaptation are expected to emerge when selection ...
  • Visiting scientist: Elena Sabaneyeva (University St. Petersburg) 2013/07/04Elena Sabaneyeva is an Associate Professor at the University of St. Petersburg in Russia. Her general research activities include studies of biodiversity of symbiotic systems involving ciliates, studies of morphology of bacterial endobionts in ciliates, investigation of fine mechanisms of interaction between the partners in the system Paramecium caudatum/Holospora obtusa, study of nuclear actin in ...
  • Shared influence of pathogen and host genetics 2013/03/22Oliver Kaltz and colleagues have just published an article in Evolutionary Applications entitled « Shared influence of pathogen and host genetics on a trade-off between latent period and spore production capacity in the wheat pathogen, Puccinia triticina » Crop pathogens are notorious for their rapid adaptation to their host. We still know little about the evolution of their life ...
  • The Probablity of ER 2013/02/25Johan Ramsayer, Oliver Kaltz and colleagues have just published an article with ISEM colleagues Ophélie Ronce and Guillaume Martin on probabilities of « evolutionary rescue » in the recent special issue on that topic in Phil Trans R Soc Lond B Martin et al. 2013. The probability of evolutionary rescue: towards a quantitative comparison between theory and evolution ...
  • Shared influence of pathogen and host genetics on a trade-off between latent period and spore production capacity in the wheat pathogen, Puccinia triticina. 2012/09/27In this article we show how a very simple multivariate analysis (MANOVA) can be used to disentangle the relative contributions of host and parasite genotype to a latency-transmission trade-off. Pariaud, B., F. van den Berg, F. van den Bosch, S. J. Powers, O. Kaltz, and C. Lannou. 2012. Shared influence of pathogen and host genetics on ...
  • Bacteria and Taylor’s Law 2012/06/29In this paper we show how different stress factors and genetics affect the prediction between mean and variance in population density (Taylor’s Law).  Indeed, we find an exponent close to the oft cited default value of 2. This opens exciting prospects for understanding how environment and evolution contribute to large scale population patterns. Kaltz O., Escobar-Paramo ...
  • Temporal variation in temperature determines disease spread 2011/04/10Allison Duncan, Simon Fellous and Oliver Kaltz  have published a paper in Proc. R. Soc. B : Duncan, A. B., S. Fellous, and O. Kaltz. 2011. Temporal variation in temperature determines disease spread and maintenance in Paramecium microcosm populations. Proc. R. Soc. B. Link. The environment is rarely constant and organisms are exposed to temporal ...