Ponton Fleur auteur aut IRD Lebarbenchon Camille auteur aut IRD Lefèvre Thierry auteur aut IRD Thomas F. auteur aut IRD Duneau D. auteur aut IRD Marché L. auteur aut IRD Renault L. auteur aut IRD Hughes D.P. auteur aut IRD Biron David auteur aut IRD text journalArticle eng text/pdf born digital access One of the most fascinating anti-predator responses displayed by parasites is that of hairworms (Nematomorpha). Following the ingestion of the insect host by fish or frogs, the parasitic worm is able to actively exit both its host and the gut of the predator. Using as a model the hairworm, Paragordius tricuspidatus, (parasitizing the cricket Nemobius sylvestris) and the fish predator Micropterus salmoides, we explored, with proteomics tools, the physiological basis of this anti-predator response. By examining the proteome of the parasitic worm, we detected a differential expression of 27 protein spots in those worms able to escape the predator. Peptide Mass Fingerprints of candidate protein spots suggest the existence of an intense muscular activity in escaping worms, which functions in parallel with their distinctive biology. In a second step, we attempted to determine whether the energy expended by worms to escape the predator is traded off against its reproductive potential. Remarkably, the number of offspring produced by worms having escaped a predator was not reduced compared with controls. specialized escape behaviour gordian worm parasite predator proteomics 020 133 5 631-638 2006 0031-1820 https://www.documentation.ird.fr/hor/fdi:010050505 10.1017/S0031182006000904 0031-1820 [F A010050505] https://www.documentation.ird.fr/hor/fdi:010050505 https://www.documentation.ird.fr/intranet/publi/depot/2010-08-05/010050505.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2006-12-21 2017-08-23 fdi:010050505 fre