Acclimation of Penaeus monodon postlarvae to fresh water

Abstract

Gradual acclimation of Penaeus monodon Fabricius to fresh water was conducted in glass aquaria and marine plywood tanks over a one-day, two-day, and three-day acclimation periods. Different stages of postlarvae were tested for their hardiness to acclimation. P₃₅ postlarvae had a high percent survival of 98-99% while lower values were obtained for P₂₀ and P₉₀. A three-day acclimation period was favorable for all ages of postlarvae. Shorter durations of acclimation produced survival values as low as 20% This stress effect was apparent with P₂₀ and P₉₀ but not with P₃₅ which showed high survival regardless of the length of acclimation.