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In the Kandaleru creek area turbidity plays a major role in the survival of shrimp in culture ponds. The turbidity effect on survival rates was analyzed in the present study. The treatment ponds R1, R2, and R3 were fed with clear water which was resulted from flocculation sedimentation and treatment, and were compared against the Control (C) which was fed with creek water directly. Survival and turbidity of Litopaeneus vannamei ponds were observed for two years (4, crops) and the highest survival was observed in crop 3, (R1 and R3 treatments) and the lowest was recorded in crop 4 (control). Turbidity in control ponds was varying from 36.19±7.0470 to 47.65±4.009 NTU and in treatment ponds 4.38±0.616 to 6.02±0.906 NTU. Even though the turbidity in the treatment ponds (6.02±0.906 NTU) was not much varied but highest survival % was (91.9415±0.070; 91.9415±0.013) coinciding with R1 and R3 of crop -3 (February – May) 2017 18. In each crop, the lowest survival % (81.6104±1.16 to 84.2207±0.03) was recorded in control ponds which were fed with higher turbidity compared to the treatments.

INFLUENCE OF TURBIDITY ON SURVIVAL OF WHITE LEG SHRIMP (LITOPENAEUS VANNAMEI) GROW OUT PHASE IN SPSR NELLORE DISTRICT, ANDHRA PRADESH, INDIA