THE EFFECT OF STOCK DENSITY OF GOLDEN-MOUTH TURBAN (Turbo chysostomus, L.) ON THEIR SURVIVAL AND GROWTH UNDER AIR WATER LIFT SYSTEM

Golden-mouth turban ( Turbo chrysostumus , L.) belongs to the phylum of molluscs that inhabits coral reef ecosystem in group. Golden-mouth turban normally uses algae for their food . Study on s urvi val and growth of the juvenile golden-mouth turban focus sing on different density under air water lift sys - tem is still limited . This study was conducted on 7 January – 6 May,  2015, in a laboratoryto observe the effect of different density on the surviv al and growth of golden-mouth turban under air water lift system. Based on the analyses of variance (ANOVA), there was no significant different (P>0.05) on mortality rate for different stock density treatment (5 ind., 10 ind., 15 ind., and 20 ind. each in 10 liter water volume). However , based on growth rate, the density of 5 individuals produced the highest monthly growth rate of 1.88mm /monthof shell height, 1.18mm /month of mouth opening, and 1.1gr /month of wet weight with the highest daily mean food absorption of 91.55 %. For all treatment, the c orrelation of shell height and wet body weight exhibited a similar growth pattrern i.e. , allometry minor (b<3).Ketwords : Surviv al , growth, golden-mouth turban ( Turbo chrysostumus ), stocking density, air water lift system.