Studies of age and growth of the gastropod Turbo marmoratus determined from daily ring intensity Proceedings of the 8th international coral reef symposium Bourgeois, B. Payri, C.E. /Bach, Pascal INVERTEBRE AQUATIQUE INTRODUCTION D'ESPECES CROISSANCE EVALUATION METHODOLOGIE MODELISATION This is a study of the age and growth of the gastropod Turbo marmoratus using a sclerochronological method. The shells of an introduced population on Tahiti (French Polynesia) are examined. The confirmation of age, based on a novel marking technique using a lead pencil, reveals a daily rate of deposition with the growth rings. A new method of estimation of the growth parameters of the Von Bertalanffy model from the daily ring density (DRD) is described. The fit to the model allows the estimation of K = 0.32/year and D(infinite) = 30.3 cm (D = diameter). (Résumé d'auteur) Smithsonian Tropical Research Institute Lessios, H.A. (ed.) Macintyre, I.G. (ed.) 1997 text https://www.documentation.ird.fr/hor/fdi:010015940 fdi:010015940 Bourgeois B., Payri C.E., Bach Pascal. Studies of age and growth of the gastropod Turbo marmoratus determined from daily ring intensity. In : Lessios H.A. (ed.), Macintyre I.G. (ed.), . Proceedings of the 8th international coral reef symposium Smithsonian Tropical Research Institute, 1997, 1351-1356 International Coral Reef Symposium, 8., Balboa (PAN), 1996/06/24-29 EN TAHITI