Etat actuel de l'élevage de Penaeus japonicus, en écloserie

Penaeus japonicus reproduction bas been studied since many years. Mediterranean and atlantic climatics conditions, in France, allow the rearing of this species. It's easy to obtain post-larvae in an hatchery. Pathologies problems (black gilldease) in relation with the stabulation of breeders are resolved. Survival rate (60%) is good after nine months. Maturation is obtain at 18°e. Thermal stress up at 25°e leeds to spawning. Larval rearing is performed at 26°C, using monospecific algae produced in an algae room , and with Artemia nauplii from the zoe 3 stage. Final density is about 100 P3 per liter. Pregrowing is operated at 23°C. Food compouding is living Artemia nauplii and froozed food. Initial density is 10 P3 per liter and survival rate is 70% P.23. Technico-economical analysis of this rearing way has allowed us to estimate production costs and to face post-larvae production within the private hatchery by the rearing technics transfert.