Pemberian Hormon Fitoekdisteroid (Vitomolt) Pada Pakan Alami Terhadap Sintasan Larva Rajungan (Portunus pelagicus) Pada Stadia Zoea - Megalopa.

Abstract

The purpose of this research of find out the effect of enrichment natural feed rotifer (Brachionus plicatilis) and Artemia sp with fitoekdisteroid (vitomolt) in difference doses to survival rate of blue swimming crab larva (Portunus pelagicus)The experiment design was used completely randomized design with 4 treatments and 3replications the treatments fitoekdisteroid, there were : P1 = 0 mg/L, P2 = 1 mg/L, P3 = 2 mg/L, P4 = 4 mg/L.The result of research showed that eneichment of natural feed rotifer (Brachionus plicatilis) and Artemia sp with fitoekdisteroid (vitomolt) gives significant effect to the survival rate of blue swimming crab larva. The highest survival rate affects on P3 treatments with 2 mg/L are 5,91% and the lowest are P4 treatments with 4 mg/L are 1,64%.The development of crab larvae (Portunus pelagicus) from zoea-I to megalopa requires 14-16 days.