Impact of stocking density on whiteleg shrimp (Litopenaeus vannamei, Boone, 1931) culture in brackish water of the Caspian Sea

In this study, the effects of different primary stocking densities (45, 50, 55 and 60 shrimp/m 2 ) of whiteleg shrimp postlarvae (PL12) were evaluated on the growth and survival rates. Brackish water (10.52±0.43 psu) was provided from the Caspian Sea. The experiments were performed in 12 circular concrete ponds with a sandy bed (area: 78m2 ) with four treatments and three replications for each treatment. The culture period was 75 days and the average water temperature was 27.4±1.79°C. The results showed that different stocking densities caused statistical significant difference in growth and survival rates among various experimental treatments (P