Effect of Sediments Type on Survival Rate of( Indomysis nybini )in Indian White Shrimp Brood Stock Ponds of Kollahi Port in Hormozgan Province

This study was done for the effects of sediments type on Indomysis nybini survival in Indian White Shrimp brood stock ponds of Kollahi port in Hormozgan province. Sampling place was Tiyab area of Kollahi port of Hormuzgan Province Sediments experiment was done with 4 treatments, without sediment , ponds sediments, peat and sea sediments. Every treatment had three replicates. Stocking density was 20 mysids per liter. This experiment was conducted for 7 dayes. To measure organic matter, amount of ponds sediments, peat and sea sediments were sent to Soil Mechanics Laboratory. Results showed that ponds sediments had 9.31%, peat had 1.55% and sea sediments had 0.78% of organic matter. Experiment results showed that the survival rate was upper than 90% in all of treatments.However there was significant difference in mean of survival. The minimum mean survival (91.04±7.4) was observed in without sediment treatment and the maximum mean survival (99.58±1.8) was observed in ponds sediments treatment. Indomysis nybini able to use of bed sediments, organic matter and soluble compounds in sea water in without food condition