Survival rates of different Penaeus monodon Fabricius postlarval stages

Abstract

Four different postlarval stages (P₁₁, P₁₅ , P₂₁, and P₂₅) of P. monodon were stocked in suspension nets at the rate of 200 fry/sq m with 3 nets for each postlarval stage. Pond bottom was simulated by filling each net with a 15 cm layer of mud; dried twigs were provided for protection of the fry. Feeding with lablab and determination of temperature, dissolved oxygen, pH, salinity and alkalinity were regularly undertaken. Results show higher survival rates for P₁₅ and P₁₈ compared to the other stages.