Survival and growth of three population of Artemia under laboratory conditions: Effects of ascending salinity regime

In the present study, effects of acending salinity especially hypersaline treatments on survival and growth in three Artemia species namely: (Artemia urmiana, Artemia franciscana and parthenogenetic Artemia) were considered. Six salinity concentrations (50, 80, 150, 200, 250 and 300 gL⁻¹) were applied in this experiment. Survival rate showed that in culture period, survivals were decreased gradually, but in hypersaline treatments (200, 250, 300 gL⁻¹), we were observed dramatic decline in survival parameter. In addition, the mortality rate was calculated for three populations. We were observed high mortality between all salinity treatments in day eight perhaps as a result of larvae phase, but the mortality rate became low until senescent phase, in senescent phase as a final phase.