Microparasites (virus, bactéries, protozoaires ...) et macroparasites (métazoaires : helminthes, arthropodes...) sont omniprésents dans les écosystèmes terrestres et marins. Le nombre total d'espèces parasites sur la planète est supérieur à celui des espèces libres qu'ils colonisent, temporairement ou non, au point que ces organismes interfèrent à toutes les échelles d'organisation du vivant. Les pathologies qu'ils peuvent parfois engendrer sont dépendantes de conditions particulières, soit liées à leur propre virulence, soit à un ensemble de facteurs environnementaux. Dans ce contexte, les modèles mathématiques constituent des outils précieux en épidémiologie, permettant de mieux comprendre les modalités de leur propagation dans les populations d'hôtes. Aborder les stratégies démographiques des micro ou des macroparasites implique des approches mathématiques différentes. Le développement de ces modèles ouvre des perspectives intéressantes pour décrire, analyser et même prévoir les comportements démographiques de ces systèmes couplés. En milieu marin, les macroparasites peuvent aussi poser des problèmes de santé à leurs hôtes quand les équilibres de différentes natures sont déplacés, avec ou sans l'intervention de l'homme (espace protégé, pêche, aquaculture...). En prenant l'exemple de parasites de Poissons téléostéens, l'accent sera mis sur la complexité des processus biologiques en cause, et son intégration dans des modèles mathématiques.

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Alexander Bufetov got his Diploma in Mathematics at the Independent University of Moscow in 1999 and his PhD at Princeton University in 2005. After one year as a Postdoctoral student at the University of Chicago, he was employed as an Assistant Professor at Rice University where he also held the 'Edgar Odell Lovett Junior Chair'. In 2009, Alexander Bufetov joined the Steklov Mathematical Institute where he passed his habilitation thesis in order to supervise PhD students. In 2012, he became a CNRS Senior Researcher for the LATP (Laboratoire d'Analyse, Topologie, Probabilités) department at Aix-Marseille University.
Alexander Bufetov has received several prizes: a Prize by Moscow Mathematical Society in 2005, a grant by the Sloan Foundation and a grant from the President of the Russian Federation in 2010 and also a grant from the Simons Foundation at the Independent University of Moscow in 2011.
His research area is the Ergodic theory of dynamical systems.[-]

Maria Chudnovsky is a professor in the department of mathematics at Princeton University. She grew up in Russia and Israel, studying at the Technion and received her Ph.D. in 2003 from Princeton under the supervision of Paul Seymour. She moved to Columbia after being a Clay Mathematics Institute research fellow and assistant professor at Princeton. Chudnovsky's contributions to graph theory include the proof of the strong perfect graph theorem with Robertson, Seymour and Thomas characterizing perfect graphs as being exactly the graphs with no odd induced cycles of length at least 5 or their complements. Other research contributions of Chudnovsky include co-authorship of the first polynomial time algorithm for recognizing perfect graphs and of a structural characterization of the claw-free graphs.[-]

Peter Scholze became known as a mathematician after finishing his Bachelor's degree in three semesters and his Master's degree in two further semesters. Scholze's subsequent PhD-thesis on Perfectoid spaces yields the solution to a special case of the weight-monodromy conjecture.
He was made full professor shortly after completing his PhD, the youngest full professor in Germany.
Since July 2011 Scholze is a Fellow of the Clay Mathematics Institute. In 2012 he was awarded the Prix and Cours Peccot. He was awarded the 2013 SASTRA Ramanujan Prize. In 2014 he received the Clay Research Award. In 2015 he will be awarded the Frank Nelson Cole Prize in Algebra, and also the Ostrowski Prize.
According to the University of Bonn and to his peers, Peter is one of the most brilliant researchers in his field...[-]

Sylvia Serfaty is a Professor at the Laboratoire Jacques-Louis Lions, Université Pierre et Marie Curie Paris 6. Sylvia Serfaty was a Global Distinguished Professor of Mathematics in the Courant Institute of Mathematical Sciences. She has been awarded a Sloan Foundation Research Fellowship and a NSF CAREER award (2003), the 2004 European Mathematical Society Prize, 2007 EURYI (European Young Investigator) award, and has been invited speaker at the International Congress of Mathematicians (2006), Plenary speaker at the European Congress of Mathematics (2012) and has recently received the IAMP Henri Poincar´e prize in 2012. Her research is focused on the study of Nonlinear Partial Differential Equations, calculus of variations and mathematical physics, in particular the Ginzburg-Landau superconductivity model. Sylvia Serfaty was the first to make a systematic and impressive asymptotic analysis for the case of large parameters in theory of the Ginzburg-Landau equation. She established precisely, with Etienne Sandier, the values of the first critical fields for nucleation of vortices in superconductors, as well as the leading and next to leading order effective energies that govern the location of these vortices and their arrangement in Abrikosov lattices In micromagnetics, her work with F. Alouges and T. Rivière breaks new ground on singularly perturbed variational problems and provides the first explanation for the internal structure of cross-tie walls.
http://www.ams.org/journals/notices/200409/people.pdf
Personal page : http://www.ann.jussieu.fr/~serfaty/[-]

Peter Sarnak is a South African-born mathematician with dual South-African and American nationalities. He has been Eugene Higgins Professor of Mathematics at Princeton University since 2002, succeeding Andrew Wiles, and is an editor of the Annals of Mathematics. He is known for his work in analytic number theory. Sarnak is also on the permanent faculty at the School of Mathematics of the Institute for Advanced Study. He also sits on the Board of Adjudicators and the selection committee for the Mathematics award, given under the auspices of the Shaw Prize.

Sarnak graduated University of the Witwatersrand (B.Sc. 1975) and Stanford University (Ph.D. 1980), under the direction of Paul Cohen. Sarnak's highly cited work (with A. Lubotzky and R. Philips) applied deep results in number theory to Ramanujan graphs, with connections to combinatorics and computer science.

Peter Sarnak was awarded the Polya Prize of Society of Industrial & Applied Mathematics in 1998, the Ostrowski Prize in 2001, the Levi L. Conant Prize in 2003, the Frank Nelson Cole Prize in Number Theory in 2005 and a Lester R. Ford Award in 2012. He is the recipient of the 2014 Wolf Prize in Mathematics.

He was also elected as member of the National Academy of Sciences (USA) and Fellow of the Royal Society (UK) in 2002. He was awarded an honorary doctorate by the Hebrew University of Jerusalem in 2010. He was also awarded an honorary doctorate by the University of Chicago in 2015.[-]