Mangrove Crab, Scylla olivacea Larvae Culture Fed Rotifer, Brachionus plicatilis and Artemia sp. Naupli Enriched with Vitamin C (Ascorbyl Palmitate)
Gunarto 2014

Abstract
This study aims to determine the effect of various dosages of vitamin C for the enrichment of rotifer and artemia naupli as the feed for S. olivacea larvae particularly its effect to the larvae development and crablet production. The research was conducted on mangrove crab hatchery located in Marana Station of RICA Maros. Ten unit of conical fiberglass tanks volume 250 L each were filled with steril brackishwater 200 L with the salinity of 30 ppt and aerated. New hatch and health larvae were stocked in those tanks at the density of 100 ind./L. Five treatments with the different dosages of vitamin C (ascorbic palmitate) and enriched to rotifer and naupli artemia were tested, namely: A). Larvae fed rotifer and artemia naupli enriched with vitamin C at the dosage of 1000 mg/L, B). Larvae fed rotifer and artemia naupli enriched with vitamin C at the dosage of 750 mg/L, C). Larvae fed rotifer and artemia naupli enriched with vitamin C at the dosage of 500 mg/L, D). Larvae fed rotifer and artemia naupli enriched with vitamin C at the dosage of 250 mg/L, E). Larvae fed rotifer and artemia naupli without enriched with vitamin C. Each treatment was done in two replications. The monitoring on the larva development was represented by Larva Development Indices value and larva survival rate in each stage untill larvae metamorphosis to the megalops and crablet stages in each treatment. Result of the study showed that at the 12 to 21 days of culture the larvae population in A treatment significant lower (P