J. Thompson, The coevolutionary process. Chicago , The University of, 1994.

M. Woolhouse, J. Webster, E. Domingo, B. Charlesworth, and B. Levin, Biological and biomedical implications of the co-evolution of pathogens and their hosts, Nature Genetics, vol.31, issue.4, pp.569-577, 2002.
DOI : 10.1126/science.287.5461.2274

S. Frank, Immunology and evolution of infectious disease, 2002.

W. Hamilton, Sex versus Non-Sex versus Parasite, Oikos, vol.35, issue.2, pp.282-290, 1980.
DOI : 10.2307/3544435

W. Hamilton, R. Axelrod, and R. Tanese, Sexual reproduction as an adaptation to resist parasites (a review)., Proceedings of the National Academy of Sciences, vol.87, issue.9, pp.3566-3573, 1990.
DOI : 10.1073/pnas.87.9.3566

P. Schmid-hempel, Variation in immune defence as a question of evolutionary ecology, Proceedings of the Royal Society B: Biological Sciences, vol.270, issue.1513, pp.357-366, 2003.
DOI : 10.1098/rspb.2002.2265

B. Sheldon and S. Verhulst, Ecological immunology: costly parasite defences and trade-offs in evolutionary ecology, Trends in Ecology & Evolution, vol.11, issue.8, pp.317-321, 1996.
DOI : 10.1016/0169-5347(96)10039-2

H. Carius, T. Little, and D. Ebert, GENETIC VARIATION IN A HOST-PARASITE ASSOCIATION: POTENTIAL FOR COEVOLUTION AND FREQUENCY-DEPENDENT SELECTION, Evolution, vol.19, issue.6, pp.1136-1145, 2001.
DOI : 10.2307/2411336

G. Sorci, A. Moller, and T. Boulinier, Genetics of host-parasite interactions, Trends in Ecology & Evolution, vol.12, issue.5, pp.196-200, 1997.
DOI : 10.1016/S0169-5347(97)01056-2

C. Lively and M. Dybdahl, Parasite adaptation to locally common host genotypes, Nature, vol.405, issue.6787, pp.679-681, 2000.
DOI : 10.1038/35015069

S. Morand, S. Manning, and M. Woolhouse, Parasite-Host Coevolution and Geographic Patterns of Parasite Infectivity and Host Susceptibility, Proceedings of the Royal Society B: Biological Sciences, vol.263, issue.1366, pp.119-128, 1996.
DOI : 10.1098/rspb.1996.0019

A. Kraaijeveld, J. Van-alphen, and H. Godfray, The coevolution of host resistance and parasitoid virulence, Parasitology, vol.67, issue.310, pp.29-45, 1998.
DOI : 10.1126/science.7123238

R. Schmid-hempel, K. Puhr, N. Kruger, C. Reber, and P. Schmid-hempel, Dynamic and Genetic Consequences of Variation in Horizontal Transmission for a Microparasitic Infection, Evolution, vol.53, issue.2, pp.426-434, 1999.
DOI : 10.2307/2640779

J. Kurtz and K. Franz, Innate defence: Evidence for memory in invertebrate immunity, Nature, vol.425, issue.6953, pp.37-38, 2003.
DOI : 10.1038/425037a

R. Alegado, M. Campbell, W. Chen, S. Slutz, and M. Tan, Characterization of mediators of microbial virulence and innate immunity using the Caenorhabditis elegans host-pathogen model, Cellular Microbiology, vol.31, issue.22, pp.435-444, 2003.
DOI : 10.1046/j.1365-2958.2001.02580.x

C. Kurz and J. Ewbank, Caenorhabditis elegans: an emerging genetic model for the study of innate immunity, Nature Reviews Genetics, vol.4, issue.5, pp.380-390, 2003.
DOI : 10.1038/nrg1067

H. Schulenburg, C. Kurz, and J. Ewbank, Evolution of the innate immune system: the worm perspective, Immunological Reviews, vol.26, issue.1, pp.36-58, 2004.
DOI : 10.1074/jbc.274.42.29655

M. Haber, M. Schüngel, A. Putz, S. Müller, B. Hasert et al., Evolutionary History of Caenorhabditis elegans Inferred from Microsatellites: Evidence for Spatial and Temporal Genetic Differentiation and the Occurrence of Outbreeding, Molecular Biology and Evolution, vol.22, issue.1, pp.160-173, 2005.
DOI : 10.1093/molbev/msh264

J. Hodgkin and T. Doniach, Natural variation and copulatory plug formation in Caenorhabditis elegans, Genetics, vol.146, pp.149-164, 1997.

H. Schulenburg and S. Muller, Natural variation in the response of Caenorhabditis elegans towards Bacillus thuringiensis, Parasitology, vol.128, issue.4, pp.433-443, 2004.
DOI : 10.1017/S003118200300461X

J. Ewbank, Tackling both sides of the host???pathogen equation with Caenorhabditis elegans, Microbes and Infection, vol.4, issue.2, pp.247-256, 2002.
DOI : 10.1016/S1286-4579(01)01531-3

C. Kurz, S. Chauvet, E. Andres, M. Aurouze, I. Vallet et al., Virulence factors of the human opportunistic pathogen Serratia marcescens identified by in vivo screening, The EMBO Journal, vol.22, issue.7, pp.1451-1460, 2003.
DOI : 10.1093/emboj/cdg159

F. Grimont, P. Grimont, H. Trüper, M. Dworkin, W. Harder et al., The genus Serratia, The prokaryotes, pp.2822-2848

J. Griffitts, D. Huffman, J. Whitacre, B. Barrows, L. Marroquin et al., Resistance to a Bacterial Toxin Is Mediated by Removal of a Conserved Glycosylation Pathway Required for Toxin-Host Interactions, Journal of Biological Chemistry, vol.278, issue.46, pp.45594-45602, 2003.
DOI : 10.1074/jbc.M308142200

J. Griffitts, J. Whitacre, D. Stevens, and R. Aroian, Bt Toxin Resistance from Loss of a Putative Carbohydrate-Modifying Enzyme, Science, vol.293, issue.5531, pp.860-864, 2001.
DOI : 10.1126/science.1062441

T. Little, O. Connor, B. Colegrave, N. Watt, K. Read et al., Maternal Transfer of Strain-Specific Immunity in an Invertebrate, Current Biology, vol.13, issue.6, pp.489-492, 2003.
DOI : 10.1016/S0960-9822(03)00163-5

G. Mallo, C. Kurz, C. Couillault, N. Pujol, S. Granjeaud et al., Inducible Antibacterial Defense System in C. elegans, Current Biology, vol.12, issue.14, pp.1209-1214, 2002.
DOI : 10.1016/S0960-9822(02)00928-4

C. Couillault, N. Pujol, J. Reboul, L. Sabatier, J. Guichou et al., TLR-independent control of innate immunity in Caenorhabditis elegans by the TIR domain adaptor protein TIR-1, an ortholog of human SARM, Nature Immunology, vol.2, issue.5, pp.488-494, 2004.
DOI : 10.1093/nar/gkg092

D. Huffman, L. Abrami, R. Sasik, J. Corbeil, F. Van-der-goot et al., Mitogen-activated protein kinase pathways defend against bacterial pore-forming toxins, Proceedings of the National Academy of Sciences, vol.93, issue.25, pp.10995-11000, 2004.
DOI : 10.1073/pnas.93.25.14934
URL : http://www.ncbi.nlm.nih.gov/pmc/articles/PMC503732

A. Hejazi and F. Falkiner, Serratia marcescens, Journal of Medical Microbiology, vol.46, issue.11, pp.903-1012, 1997.
DOI : 10.1099/00222615-46-11-903

T. Stiernagle, Maintenance of C. elegans. In C elegans A practical approach Edited by: Hope IA, pp.51-67

C. Flyg, K. Kenne, and H. Boman, Insect Pathogenic Properties of Serratia marcescens: Phage-resistant Mutants with a Decreased Resistance to Cecropia Immunity and a Decreased Virulence to Drosophila, Microbiology, vol.120, issue.1, pp.173-181, 1980.
DOI : 10.1099/00221287-120-1-173

K. Suzuki, T. Uchiyama, M. Suzuki, N. Nikaidou, M. Regue et al., LysR-type Transcriptional Regulator ChiR Is Essential for Production of All Chitinases and a Chitin-Binding Protein, CBP21, in Serratia marcescens 2170, Bioscience, Biotechnology, and Biochemistry, vol.65, issue.2, pp.338-347, 2001.
DOI : 10.1271/bbb.65.338

N. Rius, M. Sole, A. Francia, and J. Loren, Buffering capacity of pigmented and nonpigmented strains of Serratia marcescens

P. Mccullagh and J. Nelder, Generalized linear models, 1983.

G. Quinn and M. Keough, Experimental design and data analysis for biologists. Cambridge, 2002.